Mercedes-Benz GLA 2018 Operator's Manual page 208

Display messages
206
Display messages
$
(USA only)
J
(Canada only)
Check Brake Fluid
Level
#
Check Brake Pad Wear
G
Inoperative
Active Brake Assist
Functions Currently
Limited See Opera‐
tor's Manual
Active Brake
Assist: System Inop‐
erative
Possible causes/consequences and M 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.
Shift the transmission to position j.
X
Visit a qualified specialist workshop.
X
There is not enough brake fluid in the brake fluid reservoir.
A warning tone sounds. The $ (USA only) or J (Canada only)
warning lamps in the instrument cluster may also light up.
G
WARNING
The braking effect 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 add brake fluid. This does not correct the malfunction.
X
The brake pads/linings have reached their wear limit.
Visit a qualified specialist workshop.
X
One or more main features of the mbrace system are malfunctioning.
Visit a qualified specialist workshop.
X
Active Brake Assist is temporarily inoperative.
Possible causes are:
the radar sensor system is temporarily inoperative, e.g. due to elec-
R
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
the system is outside the operating temperature range
R
the on-board voltage is too low.
R
When the causes stated above no longer apply, the display message
disappears.
Active Brake Assist is operational again.
If the display message does not disappear:
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Secure the vehicle against rolling away (
X
Restart the engine.
X
Active Brake Assist is unavailable due to a malfunction. Situation-
dependent braking assistance may also have failed.
Visit a qualified specialist workshop immediately.
X
page 143).
Y
page 143).
Y