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Practical hints
What to do if ...
Problem Possible cause/consequence Suggested solutions
- The yellow ABS indicator
lamp comes on while driving.
The ABS has detected a malfunction and
has switched off. The BAS and the ESP
®
are also switched off (see messages in dis-
play).
The electrohydraulic brake system is still
functioning normally but without ABS
available.
If the ABS control unit is malfunctioning
the automatic transmission may also be
malfunctioning.
̈ Continue driving with added caution. Wheels
may lock during hard braking, reducing
steering capability.
̈ Read and observe messages in the multi-
function display (
୴ page 307).
̈ Have the system checked at an authorized
Mercedes-Benz Center immediately.
Failure to follow these instructions increases
the risk of an accident.
The charging voltage has fallen below
10 volts and the ABS was switched off.
When the voltage is above this value again, the
ABS is operational again.
̈ If necessary, have the generator and battery
checked.