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Display messages
Possible causes/consequences and MM Solutions
The yellow ! warning lamp lights up and the red F (USA only)
or ! (Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X
Shift the transmission to position j .
X
Visit a qualified specialist workshop.
$ (USA only)
J (Canada only)
Check Brake FluidCheck Brake Fluid
LevelLevel
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 158).
X
Consult a qualified specialist workshop.
X
Do not add brake fluid. This does not correct the malfunction.
#
CheckCheck BrakeBrake PadPad WearWear
The brake pads/linings have reached their wear limit.
USA only: the red $ brake system warning lamp is lit while the
engine is running.
X
Visit a qualified specialist workshop.
G
InoperativeInoperative
One or more main features of the mbrace system are malfunctioning.
X
Visit a qualified specialist workshop.
ActiveActive BrakeBrake AssistAssist
FunctionsFunctions CurrentlyCurrently
Limited See Opera‐Limited See Opera‐
tor's Manualtor's Manual
Active Brake Assist with cross-traffic function is temporarily inopera-
tive.
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.
Active Brake Assist with cross-traffic function or PRE‑SAFE
®
PLUS is
functional 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 158).
X
Restart the engine.
Display messages
251
On-board computer and displays
Z
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