Operation Manual

Display messages
Possible causes/consequences and M Solutions
$(USA
only)
J(Canada
only)
Check Brake Fluid
Level
There is not enough brake fluid in the brake fluid reservoir.
In addition, the $ (USA only) or J (Canada only) warning lamp
lights up in the instrument cluster and a warning tone sounds.
G
WARNING
The braking effect 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 146).
X
Consult a qualified specialist workshop.
X
Do not add brake fluid. This does not correct the malfunction.
#
Check Brake Pad Wear
The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop.
G
mbrace Inoperative
One or more main features of the mbrace system are malfunctioning.
X
Visit a qualified specialist workshop.
Collision Preven‐
tion Assist Plus
Currently Unavaila‐
ble See Operator's
Manual
COLLISION PREVENTION ASSIST PLUS is temporarily not operational.
Possible causes are:
R
the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation.
R
the system is outside the operating temperature range.
R
the on-board voltage is too low.
When the causes stated above no longer apply, the display message
disappears.
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 146).
X
Restart the engine.
Collision Preven‐
tion Assist Plus
Inoperative
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative due
to a malfunction. Adaptive Brake Assist may also have failed.
X
Visit a qualified specialist workshop.
PRE-SAFE
Inoperative See
Operator's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
X
Visit a qualified specialist workshop.
Display messages
215
On-board computer and displays
Z