Mercedes-Benz GLK 300 4MATIC 2012 Owner's Manual page 250

Safety systems (4-button multifunction steering wheel)
Display messages
ABS ABS
curr. unavail. curr. unavail.
Possible causes/consequences and M M Solutions
ABS (Anti-lock Braking System), ESP
gram), BAS (Brake Assist), PRE-SAFE
trailer stabilisation are temporarily not available.
The adaptive brake lights may also have failed.
In addition, the ä, å and ! warning lamps light up in
the instrument cluster.
Possible causes:
self-diagnosis is not yet complete.
R
the on-board voltage may be insufficient.
R
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
®
If ESP is not operational, ESP
The danger of skidding and having an accident increases.
Carefully drive on a suitable stretch of road, making slight steer-
X
ing movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
Drive on carefully.
X
Visit a qualified specialist workshop.
X
If the display message is shown and the ä warning lamp flashes
at the same time, the electronic traction system is deactivated.
Otherwise, the brakes on the drive wheels could overheat.
Let the brakes cool down until the display message disappears
X
and the ä warning lamp goes out.
The electronic traction system is active again.
Display messages
®
(Electronic Stability Pro-
®
, hill start assist and ESP
®
is unable to stabilise the vehicle.
247
®
Z