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Brake
Problem Possible causes/consequences and M Solutions
!
The yellow ABS
indicator lamp
comes on while
the engine is
running.
The brake system is still functioning normally but due to a
malfunction, the ABS, the BAS, the BAS PLUS, the ESC, the
hill-start assist system, the HOLD function, the Adaptive Brake
Lights, the PRE-SAFE
®
system, and the PRE-SAFE
®
Brake are
unavailable.
The ATTENTION ASSIST is disabled.
X
Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X
Adjust driving to be consistent with reduced braking
responsiveness.
X
Read and observe messages that may appear in the
multifunction display (Y page 452).
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 brake system still functions normally but due to insufficient
power supply, the ABS, the BAS, the BAS PLUS, the ESC, the
hill-start assist system, the HOLD function, the Adaptive Brake
Lights, the PRE-SAFE
®
system, and the PRE-SAFE
®
Brake are
unavailable.
The ATTENTION ASSIST is disabled.
When the voltage is above the required value again, the ABS is
operational again. The ABS indicator lamp should go out.
X
Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X
Adjust driving to be consistent with reduced braking
responsiveness.
X
Read and observe messages that may appear in the
multifunction display (Y page 452).
X
If the ABS indicator lamp does not go out: Have the alternator
and the battery checked.
490
What to do if …
Practical hints
221_AKB; 6; 20, en-US
d2ugruen, Version: 2.11.8.1
2009-09-24T13:28:17+02:00 - Seite 490