Mercedes-Benz B-Class 2011 Owner's Manual page 236

Warning and indicator lamps in the instrument cluster
Safety systems
Problem
J
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
!
The yellow ABS warning
lamp is lit while the
engine is running.
Possible causes/consequences and M Solutions
There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of accident.
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions. Do not continue driving
under any circumstances.
Engage the electric parking brake.
X
Do not top up the brake fluid. Topping up will not remedy the
X
fault.
Consult a qualified specialist workshop.
X
Observe the additional display messages in the multifunction
X
display.
ABS (Anti-lock Brake System) has been deactivated due to a fault.
For this reason, BAS (Brake Assist), BAS PLUS, ESP
Stability Program), PRE-SAFE
the adaptive brake lights and ESP
deactivated, for example.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
This limits the steerability of the vehicle when braking and may
increase the braking distance.
®
If ESP is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of accident.
Observe the additional display messages in the multifunction
X
display.
Drive on carefully.
X
Visit a qualified specialist workshop.
X
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available.
®
, the HOLD function, hill start assist,
®
trailer stabilisation are also
233
®
(Electronic
Z