Indicator Lamp - Mercedes-Benz 2009 M-Class Operator's Manual

Practical hints
What to do if ...
Brake
Problem
- The yellow ABS indicator
lamp comes on while the
engine is running.
- The yellow ABS indicator
lamp comes on while the
engine is running.
338
Possible cause/consequence
The ABS has detected a
malfunction and switched off.
®
The BAS, ESP , EBP and
Electronic Traction System
(4-ETS) are also switched off (see
messages in multifunction
display).
The brake system is still
functioning normally but without
the systems specified above
available.
If the ABS control unit is
malfunctioning, other systems
such as the navigation system or
the automatic transmission may
also be malfunctioning.
The ABS has switched off due to
insufficient power supply.
The battery might not be charged
sufficiently.
Suggested solutions
X
Continue driving with added caution. Wheels may lock during hard
braking, reducing steering capability.
X
Read and observe messages that may appear in the multifunction
display ( Y page 302).
X
Have the system checked at an authorized Mercedes-Benz Center
as soon as possible.
Failure to follow these instructions increases the risk of an accident.
When the voltage is above the required value again, the ABS is
operational again and the ABS indicator lamp should go out.
X
If the ABS indicator lamp does not go out: Have the alternator and
the battery checked.