Mercedes-Benz 2013 CLA Class - Manual (Page 235)

Display messages Possible causes/consequences and M Solutions
J
Check brake fluid
level
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.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 162).
X Consult a qualified specialist workshop.
X Do not top up the brake fluid. This does not correct the fault.
#
Check brake pad
wear
The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop.
PRE-SAFE
inoperative See
Owner's Manual
Important functions of PRE-SAFE ® have failed. All other occupant
safety systems, e.g. airbags, remain available.
X Visit a qualified specialist workshop immediately.
Collision Preven‐
tion Assist Plus
currently unavail‐
able See Owner's
Manual
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative.
Possible causes:
R
the radar sensor cover in the radiator trim is dirty.
R
the function is impaired due to heavy rain or snow.
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R
the system is outside the operating temperature range.
R
the on-board voltage is too low.
Once the causes listed above no longer apply, the display message
goes out.
COLLISION PREVENTION ASSIST PLUS is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 162).
X Clean the radar sensor cover in the radiator grille
(
Y page 291).
X Restart the engine.
Display messages
233
On-board computer and displays
Z