Warning/indicatorlamp
Q QSignal type
Possible causes/consequences and P PSolutions
% QThe yellow ABS warning lamp is lit while the engine is running.
ABS (Anti-lock Braking System) is deactivated due to a malfunction. Therefore,
BAS (Brake Assist), Active Brake Assist, ESP®(Electronic Stability Program), theHOLD function and hill start assist, for example, are also deactivated.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the functions lis-ted above. The wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The brak-ing distance in an emergency braking situation can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
If the ABS control unit is defective, there is also a possibility that other systems,such as the navigation system or the automatic transmission, will not be availa-ble.
Warning and indicator lamps in the instrument cluster233
On-board computer and displays
Z
Warning/indicatorlamp
Q QSignal type
Possible causes/consequences and P PSolutions
% QThe yellow ABS warning lamp is lit while the engine is running.
ABS is temporarily unavailable. Therefore, BAS, Active Brake Assist, ESP®, EBD(electronic brake force distribution), the HOLD function and hill start assist, forexample, are also deactivated.
Possible causes are:
RSelf-diagnosis is not yet complete
RThe on-board voltage may be insufficient
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the functions lis-ted above. The front and rear wheels could therefore lock if you perform a fullbrake application, for example.
The steerability and braking characteristics may be severely affected. The brak-ing distance in an emergency braking situation can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering movements at aspeed above 12 mph (20 km/h).The functions mentioned above are available again when the warning lampgoes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
% QThe yellow ABS warning lamp is lit while the engine is running. A warningtone also sounds.
EBD is malfunctioning. Therefore, ABS, BAS, Active Brake Assist, ESP®, theHOLD function and hill start assist, for example, are not available either.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the functions lis-ted above. The front and rear wheels could therefore lock if you perform a fullbrake application, for example.
The steerability and braking characteristics may be severely affected. The brak-ing distance in an emergency braking situation can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
234Warning and indicator lamps in the instrument cluster
On-board computer and displays
