Mercedes-Benz GLK 300 4MATIC 2012 Owner's Manual page 252

Display messages
J
Brake immediately Brake immediately
J
Check brake fluid Check brake fluid
level level
#
Check brake wear Check brake wear
PRE-SAFE PRE-SAFE
inoperative inoperative
ü
Possible causes/consequences and M M Solutions
With the Hold function activated, you have either:
opened the driver's door and released the seat belt or
R
switched off the engine or
R
opened the bonnet
R
A tone may also sound at regular intervals. If you attempt to lock
the vehicle, the tone becomes louder.
You cannot start the engine.
Paying attention to the traffic situation, immediately depress the
X
brake pedal firmly and hold until the display message disap-
pears.
Use the folding wheel chock (
X
kit to secure the vehicle against rolling away.
You can restart the engine.
There is insufficient brake fluid in the brake fluid reservoir.
In addition, the red J warning lamp lights up in the instrument
cluster and a warning tone sounds.
G WARNING
The braking efficiency may be impaired.
There is a risk of an accident.
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions. Do not continue driving
under any circumstances.
Secure the vehicle against rolling away (
X
Consult a qualified specialist workshop.
X
Do not top up the brake fluid. This does not correct the error.
X
The brake pads/linings have reached their wear limit.
Visit a qualified specialist workshop.
X
G
WARNING
Important functions of PRE-SAFE
safety systems, e.g. airbags, remain available.
This poses an increased risk of injury.
Visit a qualified specialist workshop.
X
If the symbol appears in the multifunction display, a seat belt
tongue has been inserted into a rear seat belt buckle.
Further information on the status indicator for the rear seat belts
( page 53).
Y
Display messages
page 333), from the vehicle tool
Y
page 164).
Y
®
have failed. All other occupant
249
Z