diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index 4a42d79b0b..c8e11e3c30 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -84,6 +84,28 @@ constexpr int WHEEL_REAR_RIGHT = (int)VehicleAreaWheel::RIGHT_REAR;
 const int32_t kGenerateFakeDataControllingProperty =
     0x0666 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
 
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * For example: Mocking hard button press triggering a HVAC fan speed change.
+ * Android set kSetPropertyFromVehcileForTest with an array of integer {HVAC_FAN_SPEED, value of
+ * fan speed} and a long value indicates the timestamp of the events .
+ * It only works with integer type properties.
+ */
+const int32_t kSetIntPropertyFromVehcileForTest =
+        0x1112 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with float type properties.
+ */
+const int32_t kSetFloatPropertyFromVehcileForTest =
+        0x1113 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with boolean type properties.
+ */
+const int32_t kSetBooleanPropertyFromVehcileForTest =
+        0x1114 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+
 /**
  * This property is used for test purpose. End to end tests use this property to test set and get
  * method for MIXED type properties.
@@ -636,6 +658,37 @@ const ConfigDeclaration kVehicleProperties[]{
                                 .prop = kGenerateFakeDataControllingProperty,
                                 .access = VehiclePropertyAccess::WRITE,
                                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {1, 0, 0, 2, 0, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetIntPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 0, 2, 1, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetFloatPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 1, 0, 1, 0, 1, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetBooleanPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 1, 1, 0, 1, 0, 0, 0, 0},
                         },
         },
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
index b4f1f07323..9d249be954 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
@@ -131,6 +131,36 @@ VehicleHal::VehiclePropValuePtr EmulatedVehicleHal::get(
 StatusCode EmulatedVehicleHal::set(const VehiclePropValue& propValue) {
     static constexpr bool shouldUpdateStatus = false;
 
+    // set the value from vehcile side, used in end to end test.
+    if (propValue.prop == kSetIntPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::INT32, 1);
+        mockValue->prop = propValue.value.int32Values[0];
+        mockValue->value.int32Values[0] = propValue.value.int32Values[1];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+
+    if (propValue.prop == kSetFloatPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::FLOAT, 1);
+        mockValue->prop = propValue.value.int32Values[0];
+        mockValue->value.floatValues[0] = propValue.value.floatValues[0];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+    if (propValue.prop == kSetBooleanPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::BOOLEAN, 1);
+        mockValue->prop = propValue.value.int32Values[1];
+        mockValue->value.int32Values[0] = propValue.value.int32Values[0];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+
     if (propValue.prop == kGenerateFakeDataControllingProperty) {
         StatusCode status = handleGenerateFakeDataRequest(propValue);
         if (status != StatusCode::OK) {
@@ -198,12 +228,19 @@ StatusCode EmulatedVehicleHal::set(const VehiclePropValue& propValue) {
         return StatusCode::NOT_AVAILABLE;
     }
 
-    if (!mPropStore->writeValue(propValue, shouldUpdateStatus)) {
-        return StatusCode::INVALID_ARG;
+    /**
+     * After checking all conditions, such as the property is available, a real vhal will
+     * sent the events to Car ECU to take actions.
+     * Google HAL will just add a timestamp for the value and triggle the callback to android.
+     */
+    VehiclePropValuePtr updatedPropValue = getValuePool()->obtain(propValue);
+    updatedPropValue->timestamp = elapsedRealtimeNano();
+    if (!mPropStore->writeValue(*updatedPropValue, shouldUpdateStatus)) {
+        return StatusCode::INTERNAL_ERROR;
     }
 
-    getEmulatorOrDie()->doSetValueFromClient(propValue);
-    doHalEvent(getValuePool()->obtain(propValue));
+    getEmulatorOrDie()->doSetValueFromClient(*updatedPropValue);
+    doHalEvent(std::move(updatedPropValue));
 
     return StatusCode::OK;
 }