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Practical hints
What to do if …
̄ What to do if …
Lamps in instrument cluster General information:
If a bulb in the instrument cluster fails to
come on during the bulb self-check when
turning the SmartKey in the starter switch
to position 2, have it checked and replaced
if necessary.
Problem Possible cause Suggested solution
- The yellow ABS malfunction
warning lamp comes on while
driving.
The ABS has detected a malfunction and has
switched off. The BAS and the ESP are also
switched off (see messages in display).
The SBC brake system is still functioning nor-
mally but without the ABS available.
If the ABS control unit is malfunctioning, oth-
er systems such as the Parktronic system*,
Distronic*, or the automatic transmission
may also be malfunctioning.
̈ Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
̈ 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.
̈ Read and observe messages in the
display (
୴ page 318).
The charging voltage has fallen below
10 volts. The ABS has switched off.
When the voltage is above this value
again, the ABS is operational again.
̈ If necessary, have the generator and
battery checked.