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Practical hints
What to do if ...
Symbol messages
Left display Right display Possible cause/
consequence
Possible solution
<
Airbrake malfunc
The Airbrake locking mecha-
nism is malfunctioning.
̈ Notify an authorized Mercedes-Benz Center
immediately.
#
Battery/
Alternator
Stop vehicle
The battery or the alternator is
malfunctioning.
The electrohydraulic brake sys-
tem requires electrical energy
and therefore has only limited
operation. Considerably great-
er brake pedal force is required
and the pedal travel is longer.
The stopping distance is in-
creased.
̈ Stop the vehicle as soon as it is safe to do so. Adjust driv-
ing to be consistent with reduced braking responsive-
ness.
̈ Notify an authorized Mercedes-Benz Center immediate-
ly.
̈ Read and observe messages in the multifunction display.
Failure to follow these instructions increases the risk of an
accident.
Convenience func-
tions
Temporarily
Unavailable
The consumer battery has in-
sufficient voltage and can no
longer supply the convenience
functions such as power win-
dows.
The electrical consumers will come back online as soon as
on-board voltage is sufficient.