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What to do if …
528
Brake
Problem Possible cause/consequence Suggested solutions
-
The yellow ABS indicator
lamp comes on while the
engine is running.
The ABS has detected a
malfunction and switched off.
The BAS, ESP
®
, EBP and PRE-
SAFE
®
are also switched off (see
messages in multifunction
display).
The brake system is still
functioning normally but without
the systems specified above
available.
If the ABS control unit is
malfunctioning, other systems
such as the Parktronic, the
DISTRONIC Plus, the navigation
system or the automatic
transmission may also be
malfunctioning.
X
Continue driving with added caution. Wheels may lock during hard
braking, reducing steering capability.
X
Read and observe messages that may appear in the multifunction
display (Y page 475).
X
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.
-
The yellow ABS indicator
lamp comes on while the
engine is running.
The ABS has switched off due to
insufficient power supply.
The battery might not be charged
sufficiently.
When the voltage is above the required value again, the ABS is
operational again and the ABS indicator lamp should go out.
X
If the ABS indicator lamp does not go out: Have the alternator and
the battery checked.
Practical hints