At speeds above approximately 30 km/h, Blind Spot Assist uses two lateral, rear-facing radar sensors to monitor the area up to 3 m behind your vehicle and directly next to your vehicle. Below 30 km/h, the system is not active and vehicles in the monitoring range are not detected.
If Blind Spot Assist is activated, the warning lamp in the outside mirror lights up yellow at speeds of up to 30 km/h. At speeds above approximately 30 km/h, the warning lamp goes out and Blind Spot Assist is operational.
If a vehicle is detected within the monitoring range at speeds above 30 km/h, the warning lamp in the outside mirror lights up red.
If a vehicle is detected close to your vehicle in the lateral monitoring range and you switch on the turn signal indicator in the corresponding direction, a warning tone sounds once and the warning lamp in the outside mirror flashes red. If the turn signal indicator remains switched on, all other detected vehicles are indicated only by the flashing of the red warning lamp.
If you overtake a vehicle quickly, no warning is given.
Blind Spot Assist does not react to vehicles approaching and overtaking you at a greatly different speed.
Blind Spot Assist cannot warn drivers in this situation.
Blind Spot Assist is only an aid. It may fail to detect some vehicles and is not a substitute for attentive driving. Always ensure that there is sufficient distance to the side for other road users and obstacles.
The sensors are dirty or covered.
Poor visibility, e.g. due to fog, heavy rain, snow or spray.
Narrow vehicles, e.g. bicycles, are within the monitoring range.
If the lanes are very narrow or very wide, especially if vehicles are not driving in the middle of their lane.
Warnings may be issued in error when driving close to crash barriers or similar continuous lane borders. Warnings may be interrupted when driving alongside long vehicles, for example lorries, for a prolonged time.
Blind Spot Assist is not operational when reverse gear is engaged.