Distance Alert is active at speeds above approximately 20 mph (30 km/h) and only reacts to a vehicle ahead that is driving in the same direction. No information is provided for vehicles driving toward you, moving very slowly, or at a standstill.
Note
Distance Alert only monitors distance to the vehicle ahead while Adaptive Cruise Control is in standby mode or off.
Warning
Distance Alert only indicates the distance to the vehicle ahead. It does not affect the speed of your vehicle.
Head-up-display*
In vehicle is equipped with the head-up display*, the symbol in the windshield will only appear if the distance to the vehicle ahead is shorter than the preset value. However, the Show Driver Support In Head-Up Display function has to be activated in the Settings menu. See the article "Head-up display" for additional information.
Note
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see.