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Practical hints
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
switching on ignition, have it checked and
replaced if necessary.
Problem Possible cause Suggested solution
- The yellow ABS malfunction
indicator lamp comes on while
driving.
ABS has detected a malfunction and has
switched off. The BAS, ESP, and 4-ETS are
also switched off.
The brake system is still functioning normally
but without ABS available.
̈ Continue driving with added caution.
Wheels may lock during hard braking
reducing steering capability.
̈ Have the system checked at an autho-
rized Mercedes-Benz Light Truck Cen-
ter 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.
When the voltage is above this value
again, the ABS is operational again.
̈ If necessary, have the generator
(alternator) and the battery checked.