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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
replaced if necessary.
Problem Possible cause/consequence Suggested solution
- The yellow ABS indicator lamp
comes on while driving.
You have 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 multi-
function display).
The brake system is still functioning normally
but without the ABS available.
If the ABS control unit is malfunctioning,
other systems such as the navigation system
or Rear Parking Assist* may also be malfunc-
tioning.
̈ 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
Center as soon as possible.
Failure to follow these instructions
increases the risk of an accident.
̈ Read and observe messages in the
multifunction display (
୴ page 338).