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Practical hints
What to do if …
Lamps in instrument cluster General information:
If any of the following lamps in the instru-
ment cluster fails to come on during the
bulb self-check when switching on ignition
(
୴ page 36), have the respective bulb
checked and replaced if necessary.
Problem Possible cause/consequence Suggested solution
- The yellow ABS indicator lamp comes on
while driving.
The ABS has detected a malfunction
and has switched off. The BAS and
ESP
®
are also switched off (see mes-
sages in display).
The brake system is still functioning
normally but without the ABS avail-
able.
If the ABS control unit is malfunction-
ing, other systems such as 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
multifunction display (
୴ page 368).
̈ 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.
The charging voltage has fallen below
10 volts and the ABS has switched
off.
The battery might not be charged suf-
ficiently.
̈ Switch off electrical consumers that
are currently not needed, e.g. seat
heating*.
̈ If necessary, have the generator and
battery checked.
When the voltage is above this value
again, the ABS is operational again.