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Practical hints
What to do if …?
Display Possible cause/consequence Possible solution
The battery is no longer charging.
Possible causes:
ț alternator malfunctioning
ț broken poly-V-belt
̈ Stop the vehicle immediately in a safe loca-
tion.
̈ Engage the electronic parking brake
(
୴ page 395).
̈ Check the poly-V-belt.
If it is broken:
̈ Do not continue to drive. Otherwise the en-
gine will overheat due to an inoperative water
pump which may result in damage to the en-
gine.
̈ Notify an authorized Mercedes-Benz Center.
If it is intact:
̈ Drive immediately to the nearest authorized
Mercedes-Benz Center.
There is a malfunction in the electronic
system.
̈ Have the system checked by an authorized
Mercedes-Benz Center as soon as possible.