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Practical hints
What to do if ...
Lamps in instrument cluster
Problem
-
The yellow ABS indicator lamp
comes on while driving.
336
General information:
If any of the following lamps in the instru-
ment cluster fails to come on during the
Possible cause
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.
The charging voltage has fallen below
10 volts. The ABS has switched off.
The battery may not be sufficiently charged.
bulb self-check when switching on the igni-
tion, have the respective bulb checked and
replaced if necessary.
Suggested solution
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the
display ( page 345).
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.
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.
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