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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,
have the respective bulb checked and re-
placed if necessary.
Problem Possible cause Suggested solution
- The yellow ABS indicator lamp
comes on while driving.
You engaged the differential locks. The ABS,
ESP, BAS, EBB and 4-ETS are switched off.
̈ The driving systems will switch on
again after the differential locks have
been disengaged.
The ABS has detected a malfunction and has
switched off. The ESP, BAS, EBB and 4-ETS
are also switched off (see messages in dis-
play).
If the ABS control unit is malfunctioning, oth-
er systems such as the navigation system or
Rear Parking Assist* may also malfunction.
The brake system is still functioning normally
but without the ABS available.
̈ Continue driving with added caution.
Wheels will lock during hard braking
reducing steering capability.
̈ Have the system checked at an autho-
rized Mercedes-Benz Light Truck
Center as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.