Mercedes-Benz 2012 A Class - Manual (Page 261)

Problem Possible causes/consequences and M Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running. ABS is temporarily unavailable. Therefore, BAS, COLLISION PRE-
VENTION ASSIST, ESP
® , EBD (electronic brake force distribution),
PRE-SAFE ® , the HOLD function, hill start assist, the adaptive brake
lights and ESP ® trailer stabilisation, for example, are also deacti-
vated.
Possible causes:
R
Self-diagnosis is not yet complete.
R
the on-board voltage may be insufficient
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock, for example, if you brake hard.
The steerability and braking characteristics may be severely affec-
ted. The braking distance may increase in an emergency braking
situation.
If ESP
® is not operational, ESP ® is unable to stabilise the vehicle.
There is a risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steer-
ing movements at a speed above 20 km/h.
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
259
On-board computer and displays
Z