Mercedes-Benz S-Class 2012 - Manual (Page 425)

Problem Possible causes/consequences and M Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running. G Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
BAS (Brake Assist), BAS PLUS, ESP
® (Electronic Stability
Program), PRE-SAFE ® , PRE-SAFE ® Brake, the HOLD function and
hill start assist are therefore also deactivated, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST
22 is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
!
The yellow ABS warning
lamp is lit while the
engine is running. G
Risk of accident
ABS is temporarily unavailable. BAS, BAS PLUS, ESP ® , EBD
(electronic brake force distribution), PRE-SAFE ® ,
PRE-SAFE ® Brake, the HOLD function, hill start assist are therefore
also deactivated, for example.
Self diagnosis is not yet complete or the on-board voltage may be
insufficient, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST
22 is deactivated.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (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.
22 Not available on hybrid vehicles.
Warning and indicator lamps in the instrument cluster
423
On-board computer and displays
Z