diff --git a/openapi.yaml b/openapi.yaml
index 0560b593..b67c74b1 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -4644,6 +4644,22 @@ paths:
                 customer_id:
                   type: integer
                   nullable: true
+                vehicle_type:
+                  type: integer
+                  nullable: true
+                  description: Optional product/vehicle type override used when refreshing the self-serve summary.
+                vehicle_type_id:
+                  type: integer
+                  nullable: true
+                  description: Alias for vehicle_type.
+                activate_machine:
+                  type: boolean
+                  default: true
+                  description: Whether the session synchronization may enable the machine relay. User wash-start saves answers with false.
+                sync_relay_state:
+                  type: boolean
+                  default: true
+                  description: Whether the answer mutation should synchronize live relay state.
       responses:
         '200':
           description: Successfully added vehicle condition
@@ -4688,6 +4704,22 @@ paths:
                 customer_id:
                   type: integer
                   nullable: true
+                vehicle_type:
+                  type: integer
+                  nullable: true
+                  description: Optional product/vehicle type override used when refreshing the self-serve summary.
+                vehicle_type_id:
+                  type: integer
+                  nullable: true
+                  description: Alias for vehicle_type.
+                activate_machine:
+                  type: boolean
+                  default: true
+                  description: Whether the session synchronization may enable the machine relay.
+                sync_relay_state:
+                  type: boolean
+                  default: true
+                  description: Whether the mutation should synchronize live relay state.
       responses:
         '200':
           description: Successfully updated vehicle condition
@@ -5274,13 +5306,34 @@ paths:
                 reg: { type: string }
                 customer_number: { type: integer, nullable: true }
                 vehicle_type_id: { type: integer, nullable: true }
+                config_source:
+                  type: string
+                  enum: [draft, published]
+                  default: draft
+                answer_overrides:
+                  type: array
+                  items:
+                    type: object
+                    required: [question_id]
+                    properties:
+                      question_id: { type: integer }
+                      value:
+                        type: boolean
+                        nullable: true
+                include_hardware:
+                  type: boolean
+                  default: true
+                mode:
+                  type: string
+                  enum: [full_dry_run]
+                  default: full_dry_run
       responses:
         '200':
           description: Simulator result
           content:
             application/json:
               schema:
-                $ref: '#/components/schemas/SelfserveVehicleAllowedResponse'
+                $ref: '#/components/schemas/SelfserveStudioSimulationResponse'
 
   /department/selfserve/studio/publish:
     post:
@@ -15129,6 +15182,75 @@ components:
           type: string
           format: date-time
 
+    SelfserveStudioSimulationDebug:
+      type: object
+      required: [summary, parameters, stages, questions, conditions, rules, tasks, hardware, graph_annotations, recommendations]
+      properties:
+        summary:
+          type: object
+          additionalProperties: true
+        parameters:
+          type: object
+          additionalProperties: true
+        stages:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+        questions:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+        conditions:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+        rules:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+        tasks:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+        hardware:
+          type: object
+          additionalProperties: true
+        graph_annotations:
+          type: object
+          properties:
+            nodes:
+              type: object
+              additionalProperties:
+                type: object
+                additionalProperties: true
+            edges:
+              type: object
+              additionalProperties:
+                type: object
+                additionalProperties: true
+        recommendations:
+          type: array
+          items:
+            type: object
+            additionalProperties: true
+
+    SelfserveStudioSimulationResponse:
+      allOf:
+        - $ref: '#/components/schemas/SelfserveVehicleAllowedResponse'
+        - type: object
+          properties:
+            simulator_version: { type: integer }
+            dry_run: { type: boolean, enum: [true] }
+            mode: { type: string, enum: [full_dry_run] }
+            config_source: { type: string, enum: [draft, published] }
+            debug:
+              $ref: '#/components/schemas/SelfserveStudioSimulationDebug'
+
     SelfserveVehicleAllowedResponse:
       type: object
       properties:
@@ -15172,6 +15294,13 @@ components:
           allOf:
             - $ref: '#/components/schemas/SelfserveWashSession'
           nullable: true
+        config_source:
+          type: string
+          nullable: true
+        evaluation_trace:
+          type: object
+          nullable: true
+          additionalProperties: true
 
     SelfserveWashSummary:
       type: object
diff --git a/src/components/session/token/SessionUser/Objects/SelfServeVehicleConditions.vue b/src/components/session/token/SessionUser/Objects/SelfServeVehicleConditions.vue
index 13d7c509..97745c28 100644
--- a/src/components/session/token/SessionUser/Objects/SelfServeVehicleConditions.vue
+++ b/src/components/session/token/SessionUser/Objects/SelfServeVehicleConditions.vue
@@ -126,14 +126,15 @@ export const SelfServeVehicleConditions = {
       }
     }
   },
-  add: async (department, lane, customer_id, reg, question, value) => {
+  add: async (department, lane, customer_id, reg, question, value, options = {}) => {
     return ObjectsGlobal.add.object(SelfServeVehicleConditions.meta.endpoint, {
       department: parseInt(department),
       lane: parseInt(lane),
       customer_id: parseInt(customer_id),
       reg: reg,
       question: parseInt(question),
-      value: value === "true" || value === true
+      value: value === "true" || value === true,
+      ...options
     });
   },
   set: {
diff --git a/src/composables/useSelfServeLogic.js b/src/composables/useSelfServeLogic.js
index dd93ca8e..31b055c3 100644
--- a/src/composables/useSelfServeLogic.js
+++ b/src/composables/useSelfServeLogic.js
@@ -612,13 +612,25 @@ export function useSelfServeLogic() {
     loading.value = true;
     try {
       const normalizedReg = reg.trim().toUpperCase();
+      const requestVehicleTypeCandidate = vehicleTypeId === undefined || vehicleTypeId === null
+        ? (lastVehicleTypeOverride.value ?? lastResolvedVehicleTypeId.value)
+        : vehicleTypeId;
+      const normalizedRequestVehicleTypeId = parseInt(requestVehicleTypeCandidate);
+      const mutationOptions = {
+        activate_machine: false,
+        sync_relay_state: false,
+      };
+      if (!Number.isNaN(normalizedRequestVehicleTypeId) && normalizedRequestVehicleTypeId > 0) {
+        mutationOptions.vehicle_type = normalizedRequestVehicleTypeId;
+      }
       const response = await SessionUser.objects.self_serve_vehicle_conditions.add(
         departmentId,
         laneId,
         customerNumber || 0,
         normalizedReg,
         questionId,
-        value
+        value,
+        mutationOptions
       );
 
       const payload = response?.data?.data || response?.data || response || {};
@@ -629,9 +641,7 @@ export function useSelfServeLogic() {
         [parseInt(questionId)]: value,
       };
 
-      const refreshVehicleTypeCandidate = vehicleTypeId === undefined || vehicleTypeId === null
-        ? (lastVehicleTypeOverride.value ?? lastResolvedVehicleTypeId.value)
-        : vehicleTypeId;
+      const refreshVehicleTypeCandidate = requestVehicleTypeCandidate;
       const normalizedRefreshVehicleTypeId = parseInt(refreshVehicleTypeCandidate);
       const refreshVehicleTypeId = !Number.isNaN(normalizedRefreshVehicleTypeId) && normalizedRefreshVehicleTypeId > 0
         ? normalizedRefreshVehicleTypeId
diff --git a/src/composables/useWashSessionActions.js b/src/composables/useWashSessionActions.js
index b0fa2f3f..4b843649 100644
--- a/src/composables/useWashSessionActions.js
+++ b/src/composables/useWashSessionActions.js
@@ -206,7 +206,13 @@ export function useWashSessionActions(options) {
 
     isStartingWash.value = true;
     try {
-      await updateLaneAllowedServices(laneId);
+      try {
+        await updateLaneAllowedServices(laneId);
+      } catch (error) {
+        console.error("Error updating allowed services before start:", error);
+        return false;
+      }
+
       const startResponse = await executeSelfServeCommand(laneId, "START", {
         customer_number: parseInt(customerNumber),
         license_plate: licensePlate.trim().toUpperCase(),
@@ -229,7 +235,11 @@ export function useWashSessionActions(options) {
       });
 
       if (radioWashType.value === "Machine" && isServiceAllowed("MACHINE")) {
-        await enableMachineRelay(laneId);
+        try {
+          await enableMachineRelay(laneId);
+        } catch (error) {
+          console.error("Error enabling machine relay after wash start:", error);
+        }
       }
       return true;
     } catch (error) {
diff --git a/src/views/dashboards/departmentDashboard/modules/self-serve/DepartmentSelfServeStudio.vue b/src/views/dashboards/departmentDashboard/modules/self-serve/DepartmentSelfServeStudio.vue
index a1d77783..15cdbb8f 100644
--- a/src/views/dashboards/departmentDashboard/modules/self-serve/DepartmentSelfServeStudio.vue
+++ b/src/views/dashboards/departmentDashboard/modules/self-serve/DepartmentSelfServeStudio.vue
@@ -137,8 +137,12 @@ const simulatorForm = ref({
   reg: "TEST123",
   customer_number: null,
   vehicle_type_id: null,
+  config_source: "draft",
+  include_hardware: true,
 });
 const simulatorResult = ref(null);
+const simulatorAnswerOverrides = ref({});
+const simulatorShowJson = ref(false);
 const searchTerm = ref("");
 const filters = ref({
   lane_id: "",
@@ -169,6 +173,30 @@ const permissions = computed(() => graphPayload.value?.permissions || {});
 const selectedNode = computed(() => flowNodes.value.find((node) => node.id === selectedNodeId.value) || null);
 const editableNodeKinds = ["question", "condition", "rule", "task"];
 const isSelectedEditable = computed(() => editableNodeKinds.includes(selectedNode.value?.data?.kind));
+const simulatorDebug = computed(() => simulatorResult.value?.debug || null);
+const simulatorSummary = computed(() => simulatorDebug.value?.summary || null);
+const simulatorRecommendations = computed(() => Array.isArray(simulatorDebug.value?.recommendations) ? simulatorDebug.value.recommendations : []);
+const simulatorStages = computed(() => Array.isArray(simulatorDebug.value?.stages) ? simulatorDebug.value.stages : []);
+const simulatorQuestions = computed(() => {
+  if (Array.isArray(simulatorDebug.value?.questions) && simulatorDebug.value.questions.length > 0) {
+    return simulatorDebug.value.questions;
+  }
+  return flowNodes.value
+    .filter((node) => node.data?.kind === "question")
+    .map((node) => ({
+      id: node.data?.object_id || node.data?.raw?.id,
+      node_id: node.id,
+      label: node.data?.label || node.data?.raw?.question || node.id,
+      state: "available",
+      answer: null,
+      answer_source: "missing",
+    }))
+    .filter((question) => question.id);
+});
+const simulatorConditions = computed(() => Array.isArray(simulatorDebug.value?.conditions) ? simulatorDebug.value.conditions : []);
+const simulatorRules = computed(() => Array.isArray(simulatorDebug.value?.rules) ? simulatorDebug.value.rules : []);
+const simulatorTasks = computed(() => Array.isArray(simulatorDebug.value?.tasks) ? simulatorDebug.value.tasks : []);
+const simulatorHardware = computed(() => simulatorDebug.value?.hardware || null);
 
 const lookupRows = (type) => (Array.isArray(lookups.value?.[type]) ? lookups.value[type] : []);
 const labelFor = (type, id) => {
@@ -436,8 +464,26 @@ const computeAutoLayoutPositions = (nodes, options = {}) => {
   return positions;
 };
 
-const PRESENTATION_NODE_CLASSES = new Set(["studio-node-filtered", "studio-node-selected"]);
-const PRESENTATION_EDGE_CLASSES = new Set(["studio-edge-filtered"]);
+const SIMULATION_STATE_CLASSES = {
+  active: "studio-node-sim-active",
+  visited: "studio-node-sim-visited",
+  blocked: "studio-node-sim-blocked",
+  warning: "studio-node-sim-warning",
+  error: "studio-node-sim-error",
+  next: "studio-node-sim-next",
+  not_applicable: "studio-node-sim-muted",
+};
+const SIMULATION_EDGE_CLASSES = {
+  active: "studio-edge-sim-active",
+  visited: "studio-edge-sim-visited",
+  blocked: "studio-edge-sim-blocked",
+  warning: "studio-edge-sim-warning",
+  error: "studio-edge-sim-error",
+  next: "studio-edge-sim-next",
+  not_applicable: "studio-edge-sim-muted",
+};
+const PRESENTATION_NODE_CLASSES = new Set(["studio-node-filtered", "studio-node-selected", ...Object.values(SIMULATION_STATE_CLASSES)]);
+const PRESENTATION_EDGE_CLASSES = new Set(["studio-edge-filtered", ...Object.values(SIMULATION_EDGE_CLASSES)]);
 const baseNodeClass = (className) => String(className || "")
   .split(/\s+/)
   .filter((entry) => entry && !PRESENTATION_NODE_CLASSES.has(entry))
@@ -447,6 +493,16 @@ const baseEdgeClass = (className) => String(className || "")
   .filter((entry) => entry && !PRESENTATION_EDGE_CLASSES.has(entry))
   .join(" ");
 
+const simulationNodeClass = (nodeId) => {
+  const state = simulatorDebug.value?.graph_annotations?.nodes?.[nodeId]?.state;
+  return SIMULATION_STATE_CLASSES[state] || "";
+};
+
+const simulationEdgeClass = (edgeId) => {
+  const state = simulatorDebug.value?.graph_annotations?.edges?.[edgeId]?.state;
+  return SIMULATION_EDGE_CLASSES[state] || "";
+};
+
 const visibleCanvasNodeIds = computed(() => new Set(flowNodes.value.filter(matchesNodeFilters).map((node) => node.id)));
 const hasActiveCanvasFilters = computed(() => Boolean(
   searchTerm.value.trim()
@@ -495,6 +551,7 @@ const applyCanvasFilters = () => {
     class: [
       baseNodeClass(node.class),
       visibleIds.has(node.id) ? "" : "studio-node-filtered",
+      simulationNodeClass(node.id),
     ].filter(Boolean).join(" "),
   }));
   flowEdges.value = flowEdges.value.map((edge) => ({
@@ -502,6 +559,7 @@ const applyCanvasFilters = () => {
     class: [
       baseEdgeClass(edge.class),
       visibleIds.has(edge.source) && visibleIds.has(edge.target) ? "" : "studio-edge-filtered",
+      simulationEdgeClass(edge.id),
     ].filter(Boolean).join(" "),
   }));
   nextTick(() => {
@@ -735,7 +793,11 @@ const hydrateFromGraph = (payload) => {
     reg: payload?.simulator_defaults?.reg || "TEST123",
     customer_number: payload?.simulator_defaults?.customer_number || null,
     vehicle_type_id: payload?.simulator_defaults?.vehicle_type_id || null,
+    config_source: simulatorForm.value?.config_source || "draft",
+    include_hardware: simulatorForm.value?.include_hardware !== false,
   };
+  simulatorResult.value = null;
+  simulatorAnswerOverrides.value = {};
 
   suppressLayoutSave.value = true;
   unfilteredNodePositions.value = null;
@@ -883,6 +945,26 @@ const selectNode = (nodeId) => {
   activePanel.value = "inspector";
 };
 
+const focusDebugNodes = async (nodeIds = [], openInspector = false) => {
+  const ids = [...new Set((Array.isArray(nodeIds) ? nodeIds : []).filter(Boolean))];
+  if (ids.length === 0) {
+    return;
+  }
+  selectedNodeId.value = ids[0];
+  if (openInspector) {
+    activePanel.value = "inspector";
+  }
+  await nextTick();
+  fitView({
+    nodes: ids,
+    includeHiddenNodes: false,
+    minZoom: 0.62,
+    maxZoom: 1.05,
+    padding: 0.2,
+    duration: 240,
+  }).catch(() => {});
+};
+
 const refreshInspectorForm = () => {
   const raw = selectedRaw.value || {};
   inspectorForm.value = JSON.parse(JSON.stringify(raw));
@@ -976,18 +1058,42 @@ const runGatewayAction = async (gatewayId, action, confirm = false) => {
 
 const runSimulator = async () => {
   try {
+    const answerOverrides = Object.entries(simulatorAnswerOverrides.value)
+      .filter(([, value]) => value === true || value === false || value === null)
+      .map(([questionId, value]) => ({ question_id: parseIntOrZero(questionId), value }));
     simulatorResult.value = await requestPost("/department/selfserve/studio/simulate", {
       department: departmentId.value,
       lane_id: parseIntOrZero(simulatorForm.value.lane_id),
       reg: simulatorForm.value.reg,
       customer_number: parseNullableInt(simulatorForm.value.customer_number),
       vehicle_type_id: parseNullableInt(simulatorForm.value.vehicle_type_id),
+      config_source: simulatorForm.value.config_source || "draft",
+      include_hardware: simulatorForm.value.include_hardware !== false,
+      mode: "full_dry_run",
+      answer_overrides: answerOverrides,
     });
+    applyCanvasFilters();
   } catch (error) {
     withErrorToast(error, "Simulation failed.");
   }
 };
 
+const setSimulatorAnswerOverride = (questionId, value) => {
+  simulatorAnswerOverrides.value = {
+    ...simulatorAnswerOverrides.value,
+    [questionId]: value,
+  };
+};
+
+const clearSimulatorAnswerOverrides = () => {
+  simulatorAnswerOverrides.value = {};
+};
+
+const simulatorAnswerButtonClass = (questionId, value) => ({
+  "is-primary": simulatorAnswerOverrides.value?.[questionId] === value,
+  "is-light": simulatorAnswerOverrides.value?.[questionId] !== value,
+});
+
 const reorderTask = async (taskNode, direction) => {
   const ordered = taskNodes.value
     .map((node) => node.data.raw)
@@ -1799,8 +1905,15 @@ onBeforeUnmount(() => {
               </template>
 
               <template v-else-if="activePanel === 'simulator'">
-                <header class="studio-details-header"><h3>Simulator</h3></header>
-                <form class="studio-form" @submit.prevent="runSimulator">
+                <header class="studio-details-header">
+                  <h3>Simulator</h3>
+                  <span v-if="simulatorSummary" class="studio-sim-status" :class="`is-${simulatorSummary.status}`">{{ simulatorSummary.title }}</span>
+                </header>
+                <form class="studio-form studio-simulator-form" @submit.prevent="runSimulator">
+                  <div class="studio-segmented-control" role="group" aria-label="Configuration source">
+                    <button type="button" class="button is-small" :class="{ 'is-primary': simulatorForm.config_source === 'draft', 'is-light': simulatorForm.config_source !== 'draft' }" @click="simulatorForm.config_source = 'draft'">Draft</button>
+                    <button type="button" class="button is-small" :class="{ 'is-primary': simulatorForm.config_source === 'published', 'is-light': simulatorForm.config_source !== 'published' }" @click="simulatorForm.config_source = 'published'">Published</button>
+                  </div>
                   <label>Lane
                     <select v-model="simulatorForm.lane_id" class="input">
                       <option v-for="lane in lookupRows('lanes')" :key="lane.id" :value="lane.id">{{ lane.label }}</option>
@@ -1814,12 +1927,114 @@ onBeforeUnmount(() => {
                   </label>
                   <label>Registration<input v-model="simulatorForm.reg" class="input"></label>
                   <label>Customer number<input v-model="simulatorForm.customer_number" class="input" type="number"></label>
+                  <label class="checkbox studio-inline-toggle">
+                    <input v-model="simulatorForm.include_hardware" type="checkbox">
+                    <span>Include hardware</span>
+                  </label>
                   <button class="button is-primary" type="submit">
                     <span class="icon"><i class="fas fa-play"></i></span>
                     <span>Run</span>
                   </button>
                 </form>
-                <pre v-if="simulatorResult" class="studio-json">{{ formatJson(simulatorResult) }}</pre>
+
+                <section class="studio-debug-section">
+                  <header class="studio-debug-section-header">
+                    <h4>Question Overrides</h4>
+                    <button class="button is-small is-light" type="button" @click="clearSimulatorAnswerOverrides">Clear</button>
+                  </header>
+                  <div class="studio-simulator-question-list">
+                    <article v-for="question in simulatorQuestions" :key="question.id" class="studio-simulator-question" :class="`is-${question.state || 'available'}`" @click="focusDebugNodes([question.node_id], false)">
+                      <div>
+                        <strong>{{ question.label }}</strong>
+                        <small>{{ question.state || 'available' }} · {{ question.answer_source || 'missing' }}</small>
+                      </div>
+                      <div class="buttons has-addons">
+                        <button type="button" class="button is-small" :class="simulatorAnswerButtonClass(question.id, true)" @click.stop="setSimulatorAnswerOverride(question.id, true)">Yes</button>
+                        <button type="button" class="button is-small" :class="simulatorAnswerButtonClass(question.id, false)" @click.stop="setSimulatorAnswerOverride(question.id, false)">No</button>
+                        <button type="button" class="button is-small" :class="simulatorAnswerButtonClass(question.id, null)" @click.stop="setSimulatorAnswerOverride(question.id, null)">Unset</button>
+                      </div>
+                    </article>
+                  </div>
+                </section>
+
+                <template v-if="simulatorDebug">
+                  <section class="studio-debug-summary" :class="`is-${simulatorSummary?.status || 'blocked'}`">
+                    <div>
+                      <strong>{{ simulatorSummary?.title }}</strong>
+                      <p>{{ simulatorSummary?.next_action }}</p>
+                    </div>
+                    <button v-if="simulatorSummary?.primary_blocker?.node_ids?.length" class="button is-small is-light" type="button" @click="focusDebugNodes(simulatorSummary.primary_blocker.node_ids, true)">
+                      <span class="icon"><i class="fas fa-crosshairs"></i></span>
+                    </button>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <header class="studio-debug-section-header"><h4>Guided Trace</h4></header>
+                    <div class="studio-debug-timeline">
+                      <button v-for="stage in simulatorStages" :key="stage.id" type="button" class="studio-debug-stage" :class="`is-${stage.status}`" @click="focusDebugNodes(stage.node_ids, false)">
+                        <span class="studio-debug-dot"></span>
+                        <strong>{{ stage.title }}</strong>
+                        <small>{{ stage.summary }}</small>
+                      </button>
+                    </div>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <header class="studio-debug-section-header"><h4>Next Fixes</h4></header>
+                    <button v-for="recommendation in simulatorRecommendations" :key="`${recommendation.title}-${recommendation.message}`" type="button" class="studio-debug-recommendation" :class="`is-${recommendation.severity}`" @click="focusDebugNodes(recommendation.node_ids, true)">
+                      <strong>{{ recommendation.title }}</strong>
+                      <span>{{ recommendation.message }}</span>
+                    </button>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <header class="studio-debug-section-header"><h4>Conditions and Rules</h4></header>
+                    <div class="studio-debug-compact-list">
+                      <button v-for="condition in simulatorConditions" :key="condition.id" type="button" :class="condition.result ? 'is-ok' : 'is-blocked'" @click="focusDebugNodes([condition.node_id], true)">
+                        <span><i class="fas fa-code-branch"></i> {{ condition.label }}</span>
+                        <strong>{{ condition.result ? 'Pass' : 'Fail' }}</strong>
+                      </button>
+                      <button v-for="rule in simulatorRules" :key="`rule-${rule.id}`" type="button" :class="rule.satisfied ? 'is-ok' : 'is-blocked'" @click="focusDebugNodes([rule.node_id], true)">
+                        <span><i class="fas fa-gavel"></i> {{ rule.label }}</span>
+                        <strong>{{ rule.satisfied ? 'Pass' : 'Fail' }}</strong>
+                      </button>
+                    </div>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <header class="studio-debug-section-header"><h4>Tasks and Services</h4></header>
+                    <div class="studio-debug-task-list">
+                      <button v-for="task in simulatorTasks" :key="task.id" type="button" class="studio-debug-task" :class="task.active ? 'is-active' : 'is-blocked'" @click="focusDebugNodes([task.node_id], true)">
+                        <strong>{{ task.label }}</strong>
+                        <span>{{ task.gate_type }} · {{ task.gate_ref_label }}</span>
+                        <small>{{ (task.services || []).join(', ') || 'No services' }}</small>
+                      </button>
+                    </div>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <header class="studio-debug-section-header"><h4>Gateway Readiness</h4></header>
+                    <div class="studio-debug-hardware">
+                      <p>{{ simulatorHardware?.summary }}</p>
+                      <div class="studio-debug-chip-row">
+                        <span v-for="service in simulatorHardware?.allowed_services || []" :key="service">{{ service }}</span>
+                        <span v-if="(simulatorHardware?.missing_service_bindings || []).length" class="is-warning">Missing {{ simulatorHardware.missing_service_bindings.join(', ') }}</span>
+                        <span :class="simulatorHardware?.machine_relay_configured ? 'is-ok' : 'is-warning'">{{ simulatorHardware?.machine_relay_configured ? 'Lane relay configured' : 'Lane relay missing' }}</span>
+                      </div>
+                      <ul>
+                        <li v-for="operation in simulatorHardware?.dry_run_operations || []" :key="operation.operation">{{ operation.message }}</li>
+                      </ul>
+                    </div>
+                  </section>
+
+                  <section class="studio-debug-section">
+                    <button class="button is-small is-light" type="button" @click="simulatorShowJson = !simulatorShowJson">
+                      <span class="icon"><i class="fas fa-code"></i></span>
+                      <span>{{ simulatorShowJson ? 'Hide JSON' : 'Show JSON' }}</span>
+                    </button>
+                    <pre v-if="simulatorShowJson" class="studio-json">{{ formatJson(simulatorResult) }}</pre>
+                  </section>
+                </template>
               </template>
 
               <template v-else-if="activePanel === 'versions'">
@@ -2349,6 +2564,58 @@ onBeforeUnmount(() => {
   pointer-events: none !important;
 }
 
+:deep(.studio-node-sim-active .studio-flow-node) {
+  border-color: #16a34a;
+  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.18), 0 12px 28px rgba(15, 23, 42, 0.12);
+}
+
+:deep(.studio-node-sim-visited .studio-flow-node) {
+  border-color: #38bdf8;
+  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.16), 0 10px 24px rgba(15, 23, 42, 0.1);
+}
+
+:deep(.studio-node-sim-warning .studio-flow-node),
+:deep(.studio-node-sim-next .studio-flow-node) {
+  border-color: #f59e0b;
+  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2), 0 12px 28px rgba(15, 23, 42, 0.12);
+}
+
+:deep(.studio-node-sim-blocked .studio-flow-node),
+:deep(.studio-node-sim-error .studio-flow-node) {
+  border-color: #dc2626;
+  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.18), 0 12px 28px rgba(15, 23, 42, 0.12);
+}
+
+:deep(.studio-node-sim-muted .studio-flow-node) {
+  opacity: 0.42;
+}
+
+:deep(.studio-edge-sim-active path) {
+  stroke: #16a34a !important;
+  stroke-width: 3px !important;
+}
+
+:deep(.studio-edge-sim-visited path) {
+  stroke: #0284c7 !important;
+  stroke-width: 2.6px !important;
+}
+
+:deep(.studio-edge-sim-warning path),
+:deep(.studio-edge-sim-next path) {
+  stroke: #f59e0b !important;
+  stroke-width: 3px !important;
+}
+
+:deep(.studio-edge-sim-blocked path),
+:deep(.studio-edge-sim-error path) {
+  stroke: #dc2626 !important;
+  stroke-width: 3px !important;
+}
+
+:deep(.studio-edge-sim-muted path) {
+  opacity: 0.32;
+}
+
 .studio-loading {
   align-items: center;
   background: rgba(255, 255, 255, 0.75);
@@ -2544,6 +2811,263 @@ onBeforeUnmount(() => {
   padding: 10px;
 }
 
+.studio-sim-status {
+  border-radius: 999px;
+  font-size: 11px;
+  font-weight: 700;
+  padding: 5px 8px;
+}
+
+.studio-sim-status.is-allowed,
+.studio-sim-status.is-success {
+  background: #dcfce7;
+  color: #166534;
+}
+
+.studio-sim-status.is-warning {
+  background: #fef3c7;
+  color: #92400e;
+}
+
+.studio-sim-status.is-blocked {
+  background: #fee2e2;
+  color: #991b1b;
+}
+
+.studio-simulator-form {
+  border-bottom: 1px solid #e2e8f0;
+  padding-bottom: 12px;
+}
+
+.studio-segmented-control {
+  display: grid;
+  gap: 6px;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+}
+
+.studio-inline-toggle {
+  align-items: center !important;
+  flex-direction: row !important;
+  gap: 8px !important;
+}
+
+.studio-debug-section {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.studio-debug-section-header {
+  align-items: center;
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+}
+
+.studio-debug-section-header h4 {
+  color: #111827;
+  font-size: 13px;
+  font-weight: 700;
+  margin: 0;
+}
+
+.studio-simulator-question-list,
+.studio-debug-task-list,
+.studio-debug-compact-list,
+.studio-debug-timeline {
+  display: flex;
+  flex-direction: column;
+  gap: 7px;
+}
+
+.studio-simulator-question,
+.studio-debug-summary,
+.studio-debug-recommendation,
+.studio-debug-task,
+.studio-debug-compact-list button,
+.studio-debug-stage,
+.studio-debug-hardware {
+  background: #ffffff;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  color: #1f2937;
+  padding: 10px;
+}
+
+.studio-simulator-question {
+  align-items: center;
+  cursor: pointer;
+  display: grid;
+  gap: 8px;
+  grid-template-columns: minmax(0, 1fr) auto;
+}
+
+.studio-simulator-question strong,
+.studio-debug-recommendation strong,
+.studio-debug-task strong,
+.studio-debug-stage strong {
+  display: block;
+  font-size: 12px;
+  overflow-wrap: anywhere;
+}
+
+.studio-simulator-question small,
+.studio-debug-task span,
+.studio-debug-task small,
+.studio-debug-stage small,
+.studio-debug-recommendation span {
+  color: #64748b;
+  display: block;
+  font-size: 11px;
+  line-height: 1.35;
+  overflow-wrap: anywhere;
+}
+
+.studio-simulator-question .buttons {
+  flex-wrap: nowrap;
+  margin: 0;
+}
+
+.studio-simulator-question .button {
+  margin-bottom: 0;
+}
+
+.studio-debug-summary {
+  align-items: center;
+  display: grid;
+  gap: 8px;
+  grid-template-columns: minmax(0, 1fr) auto;
+}
+
+.studio-debug-summary p,
+.studio-debug-hardware p {
+  color: #475569;
+  font-size: 12px;
+  line-height: 1.4;
+  margin: 4px 0 0;
+}
+
+.studio-debug-summary.is-allowed {
+  background: #f0fdf4;
+  border-color: #bbf7d0;
+}
+
+.studio-debug-summary.is-warning {
+  background: #fffbeb;
+  border-color: #fde68a;
+}
+
+.studio-debug-summary.is-blocked {
+  background: #fef2f2;
+  border-color: #fecaca;
+}
+
+.studio-debug-stage {
+  cursor: pointer;
+  display: grid;
+  gap: 3px 8px;
+  grid-template-columns: 12px minmax(0, 1fr);
+  text-align: left;
+}
+
+.studio-debug-stage small {
+  grid-column: 2;
+}
+
+.studio-debug-dot {
+  background: #94a3b8;
+  border-radius: 999px;
+  height: 9px;
+  margin-top: 4px;
+  width: 9px;
+}
+
+.studio-debug-stage.is-ok .studio-debug-dot,
+.studio-debug-compact-list .is-ok strong {
+  color: #166534;
+}
+
+.studio-debug-stage.is-ok .studio-debug-dot {
+  background: #16a34a;
+}
+
+.studio-debug-stage.is-warning .studio-debug-dot {
+  background: #f59e0b;
+}
+
+.studio-debug-stage.is-error .studio-debug-dot {
+  background: #dc2626;
+}
+
+.studio-debug-recommendation,
+.studio-debug-task,
+.studio-debug-compact-list button {
+  cursor: pointer;
+  text-align: left;
+  width: 100%;
+}
+
+.studio-debug-recommendation.is-error,
+.studio-debug-task.is-blocked,
+.studio-debug-compact-list .is-blocked {
+  background: #fef2f2;
+  border-color: #fecaca;
+}
+
+.studio-debug-recommendation.is-warning {
+  background: #fffbeb;
+  border-color: #fde68a;
+}
+
+.studio-debug-recommendation.is-success,
+.studio-debug-task.is-active,
+.studio-debug-compact-list .is-ok {
+  background: #f0fdf4;
+  border-color: #bbf7d0;
+}
+
+.studio-debug-compact-list button {
+  align-items: center;
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+}
+
+.studio-debug-chip-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin: 8px 0;
+}
+
+.studio-debug-chip-row span {
+  background: #f1f5f9;
+  border: 1px solid #e2e8f0;
+  border-radius: 999px;
+  color: #475569;
+  font-size: 11px;
+  font-weight: 700;
+  padding: 5px 7px;
+}
+
+.studio-debug-chip-row span.is-ok {
+  background: #dcfce7;
+  border-color: #bbf7d0;
+  color: #166534;
+}
+
+.studio-debug-chip-row span.is-warning {
+  background: #fef3c7;
+  border-color: #fde68a;
+  color: #92400e;
+}
+
+.studio-debug-hardware ul {
+  color: #475569;
+  font-size: 12px;
+  margin: 6px 0 0 16px;
+}
+
 .studio-task-row,
 .studio-hardware-item,
 .studio-version-list article {
@@ -2748,5 +3272,16 @@ onBeforeUnmount(() => {
   .studio-flow-surface {
     min-height: 560px;
   }
+
+  .studio-simulator-question,
+  .studio-debug-summary {
+    grid-template-columns: 1fr;
+  }
+
+  .studio-simulator-question .buttons {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    width: 100%;
+  }
 }
 </style>
diff --git a/src/views/dashboards/userDashboard/wash/MyWashStart.vue b/src/views/dashboards/userDashboard/wash/MyWashStart.vue
index db175b69..9468cebc 100644
--- a/src/views/dashboards/userDashboard/wash/MyWashStart.vue
+++ b/src/views/dashboards/userDashboard/wash/MyWashStart.vue
@@ -545,6 +545,7 @@ const submitQuestionAnswer = async (questionId: number, value: boolean) => {
       reg: licensePlateInput.value,
       questionId,
       value,
+      vehicleTypeId: vehicleTypeSelect.value || null,
     });
   } catch (error) {
     console.error("Error synchronizing self-serve answer:", error);
diff --git a/tests/e2e/self-serve-studio-flow.spec.js b/tests/e2e/self-serve-studio-flow.spec.js
index 0bb94cce..a797e5bf 100644
--- a/tests/e2e/self-serve-studio-flow.spec.js
+++ b/tests/e2e/self-serve-studio-flow.spec.js
@@ -448,6 +448,149 @@ function buildStudioGraph() {
   };
 }
 
+function buildSimulationResponse() {
+  return {
+    allowed: false,
+    dry_run: true,
+    mode: "full_dry_run",
+    config_source: "draft",
+    questions: [{ id: 11, question: "Are mirrors folded?", answer: null }],
+    tasks: [{ id: 41, task: "Fold mirrors", services: ["MACHINE"] }],
+    allowed_services: [],
+    machine_available: false,
+    all_visible_questions_answered: false,
+    debug: {
+      summary: {
+        status: "blocked",
+        title: "Blocked",
+        next_action: "1 visible question(s) are missing answers.",
+        primary_blocker: {
+          title: "Answer required questions",
+          message: "1 visible question(s) are missing answers.",
+          node_ids: ["question:11"],
+        },
+      },
+      parameters: {
+        department_id: 6,
+        lane_id: 7,
+        lane: "Lane 7",
+        vehicle_type_id: 2,
+        vehicle_type: "Forvogn",
+        registration: "AB12345",
+        config_source: "draft",
+        mode: "full_dry_run",
+        dry_run: true,
+      },
+      stages: [
+        {
+          id: "input",
+          title: "Input normalization",
+          status: "ok",
+          summary: "Registration normalized.",
+          node_ids: ["checkpoint:start"],
+          edge_ids: [],
+        },
+        {
+          id: "questions",
+          title: "Question visibility and answers",
+          status: "error",
+          summary: "1 visible question missing answers.",
+          node_ids: ["question:11"],
+          edge_ids: [],
+        },
+        {
+          id: "tasks",
+          title: "Task gates and services",
+          status: "error",
+          summary: "0 tasks active.",
+          node_ids: ["task:41"],
+          edge_ids: [],
+        },
+        {
+          id: "hardware",
+          title: "Gateway and relay readiness",
+          status: "error",
+          summary: "Lane relay missing.",
+          node_ids: ["lane:7"],
+          edge_ids: [],
+        },
+      ],
+      questions: [
+        {
+          id: 11,
+          node_id: "question:11",
+          label: "Are mirrors folded?",
+          state: "missing",
+          visible: true,
+          answer: null,
+          answer_source: "override",
+          reason: "Visible question is missing an answer.",
+        },
+      ],
+      conditions: [
+        {
+          id: 21,
+          node_id: "condition:21",
+          label: "Trailer present",
+          result: true,
+          state: "passed",
+          reason: "Condition passed.",
+        },
+      ],
+      rules: [{ id: 31, node_id: "rule:31", label: "Mirror answer", satisfied: false, reason: "Rule did not pass." }],
+      tasks: [
+        {
+          id: 41,
+          node_id: "task:41",
+          label: "Fold mirrors",
+          active: false,
+          state: "blocked",
+          gate_type: "QUESTION",
+          gate_ref_label: "Are mirrors folded?",
+          services: ["MACHINE"],
+          reason: "Task gate did not pass.",
+        },
+      ],
+      hardware: {
+        machine_relay_configured: false,
+        allowed_services: [],
+        missing_service_bindings: [],
+        summary: "Lane relay missing.",
+        dry_run_operations: [
+          {
+            operation: "machine_relay_enable",
+            message: "Dry run predicts no machine relay action because eligibility is blocked.",
+          },
+        ],
+      },
+      graph_annotations: {
+        nodes: {
+          "question:11": { state: "warning", label: "Missing answer" },
+          "task:41": { state: "blocked", label: "Gate blocked" },
+          "lane:7": { state: "error", label: "Lane relay missing" },
+        },
+        edges: {
+          "task-gate:question:11:41": { state: "blocked", label: "unlocks" },
+        },
+      },
+      recommendations: [
+        {
+          severity: "error",
+          title: "Answer required questions",
+          message: "1 visible question(s) are missing answers.",
+          node_ids: ["question:11"],
+        },
+        {
+          severity: "error",
+          title: "Configure lane machine relay",
+          message: "The selected lane has no machine relay configured.",
+          node_ids: ["lane:7"],
+        },
+      ],
+    },
+  };
+}
+
 async function installStudioRoutes(page, graph, captured) {
   await page.route(/\/department\/selfserve\/studio\/graph(?:\?.*)?$/i, async (route, request) => {
     if (request.method() === "GET") {
@@ -497,7 +640,7 @@ async function installStudioRoutes(page, graph, captured) {
 
   await page.route(/\/department\/selfserve\/studio\/simulate(?:\?.*)?$/i, async (route, request) => {
     captured.simulations.push(request.postDataJSON?.() || {});
-    await route.fulfill(json({ data: { allowed: true, questions: [], tasks: [{ task: "Fold mirrors" }] } }));
+    await route.fulfill(json({ data: buildSimulationResponse() }));
   });
 
   await page.route(/\/department\/selfserve\/studio\/publish(?:\?.*)?$/i, async (route) => {
@@ -633,7 +776,7 @@ test.describe("All-in-one self-serve studio", () => {
     await page.getByTestId("studio-filter-vehicle-type").selectOption("");
     await expect(page.getByText("Are mirrors folded?").first()).toBeVisible();
 
-    await page.getByTestId("studio-custom-node-task").filter({ hasText: "Fold mirrors" }).click();
+    await page.locator(".studio-node-list button").filter({ hasText: "Fold mirrors" }).click();
     await expect(page.getByRole("heading", { name: "Inspector" })).toBeVisible();
     await expect(page.getByTestId("studio-service-picker")).toContainText("MACHINE");
     await expect(page.getByTestId("studio-service-picker")).toContainText("Machine relay on Roskilde Edge 01");
@@ -698,8 +841,23 @@ test.describe("All-in-one self-serve studio", () => {
 
     await page.getByTestId("studio-panel-simulator").click();
     await page.getByLabel("Registration").fill("AB12345");
+    await page.getByRole("button", { name: "Published" }).click();
+    await page
+      .locator(".studio-simulator-question")
+      .filter({ hasText: "Are mirrors folded?" })
+      .getByRole("button", { name: "No" })
+      .click();
     await page.getByRole("button", { name: "Run" }).click();
     await expect.poll(() => captured.simulations[0]?.reg).toBe("AB12345");
+    await expect.poll(() => captured.simulations[0]?.config_source).toBe("published");
+    await expect.poll(() => captured.simulations[0]?.answer_overrides?.[0]).toEqual({ question_id: 11, value: false });
+    await expect(page.getByText("Guided Trace")).toBeVisible();
+    await expect(page.getByText("Question visibility and answers")).toBeVisible();
+    await expect(page.getByText("Answer required questions")).toBeVisible();
+    await expect(page.getByText("Tasks and Services")).toBeVisible();
+    await expect(page.getByText("Gateway Readiness")).toBeVisible();
+    await expect(page.locator('.vue-flow__node[data-id="question:11"]')).toHaveClass(/studio-node-sim-warning/);
+    await page.getByRole("button", { name: "Show JSON" }).click();
     await expect(page.locator(".studio-json")).toContainText("Fold mirrors");
 
     await page.getByTestId("studio-panel-versions").click();
diff --git a/tests/e2e/self-serve-wash.spec.js b/tests/e2e/self-serve-wash.spec.js
index 257223d5..1d2cfe5a 100644
--- a/tests/e2e/self-serve-wash.spec.js
+++ b/tests/e2e/self-serve-wash.spec.js
@@ -90,6 +90,7 @@ function captureSelfServeGatewayRequests(page) {
   const captured = {
     previews: [],
     summaries: [],
+    answers: [],
     allowedServices: [],
     commands: [],
   };
@@ -114,6 +115,8 @@ function captureSelfServeGatewayRequests(page) {
       captured.previews.push(entry);
     } else if (url.pathname.endsWith("/department/selfserve/washes/summary")) {
       captured.summaries.push(entry);
+    } else if (url.pathname.endsWith("/department/selfserve/vehicle/conditions")) {
+      captured.answers.push(entry);
     } else if (url.pathname.endsWith("/modules/self-serve/lane/services/allowed")) {
       captured.allowedServices.push(entry);
     } else if (url.pathname.endsWith("/modules/self-serve/lane/command")) {
@@ -387,6 +390,15 @@ test.describe("Self-serve wash", () => {
 
     await expect(page.getByTestId("self-serve-runtime-error")).toBeHidden();
     await expect(page.getByTestId("self-serve-action-error")).toBeHidden();
+    expect(requests.answers).toHaveLength(1);
+    expect(requests.answers[0].body).toMatchObject({
+      lane: 7,
+      question: 11,
+      value: true,
+      vehicle_type: 2,
+      activate_machine: false,
+      sync_relay_state: false,
+    });
     expect(requests.allowedServices).toHaveLength(0);
     expect(requests.commands).toHaveLength(0);
     expect(requests.previews.some((entry) => entry.url.searchParams.get("vehicle_type") === "2")).toBe(true);
diff --git a/tests/unit/my-wash-start.spec.js b/tests/unit/my-wash-start.spec.js
index 53eaf4fe..b805ce88 100644
--- a/tests/unit/my-wash-start.spec.js
+++ b/tests/unit/my-wash-start.spec.js
@@ -392,6 +392,7 @@ describe("MyWashStart", () => {
       reg: "AB12345",
       questionId: 11,
       value: true,
+      vehicleTypeId: 2,
     });
   });
 
@@ -518,6 +519,7 @@ describe("MyWashStart", () => {
       reg: "AB12345",
       questionId: 11,
       value: true,
+      vehicleTypeId: 2,
     });
 
     wrapper.unmount();
diff --git a/tests/unit/use-self-serve-logic.spec.js b/tests/unit/use-self-serve-logic.spec.js
index 59c9f68d..f9616c66 100644
--- a/tests/unit/use-self-serve-logic.spec.js
+++ b/tests/unit/use-self-serve-logic.spec.js
@@ -362,7 +362,10 @@ describe("useSelfServeLogic", () => {
       value: true,
     });
 
-    expect(mocks.add).toHaveBeenCalledWith(3, 7, 12345, "CD67890", 2, true);
+    expect(mocks.add).toHaveBeenCalledWith(3, 7, 12345, "CD67890", 2, true, {
+      activate_machine: false,
+      sync_relay_state: false,
+    });
     expect(mocks.previewAllowed).toHaveBeenCalledWith(7, "CD67890");
     expect(logic.answers.value[2]).toBe(true);
     expect(logic.visibleQuestions.value.map((question) => question.id)).toEqual([2]);
@@ -411,6 +414,11 @@ describe("useSelfServeLogic", () => {
 
     expect(mocks.previewAllowed).toHaveBeenNthCalledWith(1, 7, "AB12345", 9);
     expect(mocks.previewAllowed).toHaveBeenNthCalledWith(2, 7, "AB12345", 9);
+    expect(mocks.add).toHaveBeenCalledWith(1, 7, 12345, "AB12345", 1, true, {
+      activate_machine: false,
+      sync_relay_state: false,
+      vehicle_type: 9,
+    });
   });
 
   it("uses the resolved auto vehicle type for lane/reg summary fallback", async () => {
diff --git a/tests/unit/use-wash-session-actions.spec.js b/tests/unit/use-wash-session-actions.spec.js
index 108a170d..68304941 100644
--- a/tests/unit/use-wash-session-actions.spec.js
+++ b/tests/unit/use-wash-session-actions.spec.js
@@ -159,4 +159,66 @@ describe("useWashSessionActions property gate commands", () => {
 
     consoleErrorSpy.mockRestore();
   });
+
+  it("does not duplicate action alerts when allowed-service setup fails before start", async () => {
+    const consoleErrorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
+    const washInProgress = ref(false);
+    const washLaneId = ref(null);
+    const washStartTime = ref(null);
+    const currentStep = ref(2);
+    const updateLaneAllowedServices = vi.fn(async () => {
+      throw new Error("Edge gateway command timed out");
+    });
+
+    const { actions, request, alertFn } = createActions({
+      updateLaneAllowedServices,
+      washInProgress,
+      washLaneId,
+      washStartTime,
+      currentStep,
+    });
+
+    const result = await actions.onStartWash(7, "ab12345", 12345679, 4);
+
+    expect(result).toBe(false);
+    expect(updateLaneAllowedServices).toHaveBeenCalledWith(7);
+    expect(request).not.toHaveBeenCalled();
+    expect(alertFn).not.toHaveBeenCalled();
+    expect(washInProgress.value).toBe(false);
+    expect(currentStep.value).toBe(2);
+
+    consoleErrorSpy.mockRestore();
+  });
+
+  it("keeps the wash started when the post-start machine relay retry fails", async () => {
+    const consoleErrorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
+    const washInProgress = ref(false);
+    const washLaneId = ref(null);
+    const washStartTime = ref(null);
+    const currentStep = ref(2);
+    const enableMachineRelay = vi.fn(async () => {
+      throw new Error("Edge gateway command timed out");
+    });
+
+    const { actions, alertFn } = createActions({
+      washInProgress,
+      washLaneId,
+      washStartTime,
+      currentStep,
+      radioWashType: ref("Machine"),
+      enableMachineRelay,
+      isServiceAllowed: vi.fn(() => true),
+    });
+
+    const result = await actions.onStartWash(7, "ab12345", 12345679, 4);
+
+    expect(result).toBe(true);
+    expect(washInProgress.value).toBe(true);
+    expect(washLaneId.value).toBe(7);
+    expect(currentStep.value).toBe(4);
+    expect(enableMachineRelay).toHaveBeenCalledWith(7);
+    expect(alertFn).not.toHaveBeenCalled();
+
+    consoleErrorSpy.mockRestore();
+  });
 });