ASR can neither reduce the risk of an accident nor override the laws of physics if the driver does not pay attention when pulling away or accelerating. ASR is only an aid. Always adapt your driving style to suit the prevailing road and weather conditions.
If you activate or deactivate the all-wheel drive in a vehicle with this option, ASR will be deactivated for the duration of the activation/deactivation process.
Vehicles without steering wheel buttons: if ASR is malfunctioning, the indicator lamp lights up while the engine is running and the engine output may be reduced More.
ASR improves traction, i.e. the transfer of power from the tyres to the road surface, for a sustained period and thereby, also improves the driving stability of the vehicle. If the drive wheels start to spin, ASR brakes individual drive wheels and limits the engine torque. ASR thus significantly assists you when pulling away and accelerating, especially on wet or slippery roads.
If traction on the road surface is not sufficient, even ASR will not allow you to pull away without difficulty. The type of tyres and total weight of the vehicle as well as the gradient of the road also play a crucial role.
If ASR intervenes, the warning lamp in the Instrument Display flashes.