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Practical hints
What to do if …
Display message Possible cause Possible solution
BAS
unavailable
See Operator’s Manual
The charging voltage has fallen below ten
volts. The BAS has switched off.
The battery might not be charged
sufficiently.
The brake system is still functioning
normally but without the BAS available.
̈ Continue driving with added caution.
̈ If necessary, have the generator and
battery checked.
When the voltage is above this value
again, the BAS is operational again.
malfunction.
Visit workshop.
The BAS has detected a malfunction and
switched off.
̈ Continue driving with added caution.
̈ Have the system checked at an
authorized Mercedes-Benz Center as
soon as possible.
Failure to follow these instructions
increases the risk of an accident.
Display malfunction.
Visit workshop.
The BAS or the BAS display is
malfunctioning.
̈ Continue driving with added caution.
̈ Have the system checked at an
authorized Mercedes-Benz Center as
soon as possible.
Failure to follow these instructions
increases the risk of an accident.