diff --git a/automotive/vehicle/aidl/impl/default_config/include/DefaultConfig.h b/automotive/vehicle/aidl/impl/default_config/include/DefaultConfig.h
index 9d7294e412..96d6ab895f 100644
--- a/automotive/vehicle/aidl/impl/default_config/include/DefaultConfig.h
+++ b/automotive/vehicle/aidl/impl/default_config/include/DefaultConfig.h
@@ -962,14 +962,7 @@ const std::vector<ConfigDeclaration> kVehicleProperties = {
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
-        {.config =
-                 {
-                         .prop = toInt(VehicleProperty::FOG_LIGHTS_SWITCH),
-                         .access = VehiclePropertyAccess::READ_WRITE,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                 },
-         .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
-
+        // FOG_LIGHTS_SWITCH must not be implemented when FRONT_FOG_LIGHTS_SWITCH is implemented
         {.config =
                  {
                          .prop = toInt(VehicleProperty::FRONT_FOG_LIGHTS_SWITCH),
@@ -978,6 +971,7 @@ const std::vector<ConfigDeclaration> kVehicleProperties = {
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
+        // FOG_LIGHTS_SWITCH must not be implemented when REAR_FOG_LIGHTS_SWITCH is implemented
         {.config =
                  {
                          .prop = toInt(VehicleProperty::REAR_FOG_LIGHTS_SWITCH),