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Practical hints
What to do if …?
Lamps in instrument cluster General information:
If any of the following bulbs in the instru-
ment cluster fails to come on during the
bulb self-check when switching on the igni-
tion, have the respective bulb checked and
replaced if necessary.
Problem Possible cause/consequence Suggested solution
- The yellow ABS indicator lamp
comes on while 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 the multifunc-
tion display).
The brake system is still functioning normally
but without the systems specified above.
If the ABS control unit is malfunctioning,
other systems such as the navigation
system* or the automatic transmission may
also be malfunctioning.
̈ Continue driving with added caution.
Wheels will lock during hard braking,
reducing steering capability.
̈ Read and observe messages in the
multifunction display (
୴ page 378).
̈ 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. The ABS has switched off.
The battery might not be charged sufficiently.
̈ 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.