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Battery/Alternator
Stop vehicle
Low voltage
Start engine
Malfunction
Electrical consumers
switched off
Possible cause
The battery is malfunctioning.
The SBC brake system requires electrical
energy and therefore has only limited op-
eration. Considerably greater brake pedal
force is required and the stopping dis-
tance is increased.
The battery has insufficient voltage.
The consumer battery has insufficient
voltage and can no longer supply the con-
venience functions such as seat ventila-
tion*.
Practical hints
What to do if ...
Possible solution
Stop the vehicle as soon as it is safe
to do so. Adjust driving to be consis-
tent with reduced braking responsive-
ness.
Notify an authorized Mercedes-Benz
Center.
Start the engine ( page 46).
The electrical consumers will come back
online as soon as on-board voltage is suf-
ficient.
353
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