Owners Manual

Problem Possible causes/consequences and M Solutions
:
The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running.
G
Risk of accident
BAS has been deactivated due to a malfunction.
The brake system continues to function normally, but without
electronic support.
X
Drive on with care.
X
Consult a qualified specialist workshop as soon as possible.
:
The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running.
G
Risk of accident
ASR and BAS have been deactivated due to undervoltage.
The battery may not be being charged.
The brake system is still available with the normal braking effect.
X
Drive on with care.
X
Visit a qualified specialist workshop immediately.
!
The yellow ABS
indicator lamp is
lit while the
engine is
running.
G
Risk of accident
ABS has been deactivated due to a malfunction. ESP
®
, ASR and
BAS, as well as cruise control, have also been deactivated as a
result.
The brake system continues to function normally, but without
electronic support. The wheels could therefore lock, e.g. if the
brakes are applied with maximum force.
X
On vehicles with steering wheel buttons, also observe the
messages in the display (Y page 199).
X
Drive on with care.
X
Visit a qualified specialist workshop immediately.
!
The yellow ABS
indicator lamp is
lit while the
engine is
running.
G
Risk of accident
ABS is temporarily unavailable. Self diagnosis may not have been
completed yet.
The brake system is still available with the normal braking effect.
X
Drive on for a short distance at a speed of more than
13 mph(20 km/h).
ABS is available again if the message goes out.
Troubleshooting
191
Practical advice
Z