Operation Manual

344
Practical hints
What to do if …
Problem Possible cause/consequence Suggested solution
- The yellow ABS indicator lamp
comes on when the engine is
running.
The ABS has detected a malfunction and has
switched off. The BAS and the ESP
®
are also
switched off (see messages in display).
The electro-hydraulic brake system is still
functioning normally but without the ABS
available.
If the ABS control unit is malfunctioning, oth-
er systems such as Parktronic*, Distronic*,
or the automatic transmission may also be
malfunctioning.
왘 Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
왘 Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
왘 Read and observe messages in the
display (
컄 page 359).
The charging voltage has fallen below
10 volts and the ABS was switched off.
The battery may not be sufficiently charged.
When the voltage is above this value
again, the ABS is operational again and
the ABS indicator lamp should go out.
If the ABS indicator lamp does not go out:
왘 Have the generator (alternator) and
battery checked.