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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 37), have the respective bulb
checked and replaced if necessary.
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
ESP
®
are also switched off (see mes-
sages in the multifunction display).
The brake system is still functioning
normally but without the systems
specified above.
If the ABS control unit is malfunction-
ing, other systems such as the naviga-
tion system* or the automatic
transmission* may also be malfunc-
tioning.
̈ Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
̈ Read and observe messages in the
multifunction display (
୴ page 356).
̈ Have the system checked at an
authorized 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. The ABS has switched off.
The battery might not be charged suf-
ficiently.
When the voltage is above this value
again, the ABS is operational again an the
ABS indicator lamp should go out.
If the ABS indicator lamp does not go out:
̈ Have the generator (alternator) and
battery checked.