Mercedes-Benz GLA 180 Owner's Manual page 244

Display messages
J
Check brake fluid Check brake fluid
level level
#
Check brake Check brake pad pad wear wear
G
Inoperative Inoperative
Active Brake Active Brake Assist Assist
Functions Functions currently currently
limited limited See See Owner's Owner's
Manual Manual
Active Brake Active Brake
Assist: Assist: System System inop‐ inop‐
erative erative
PRE-SAFE inopera‐ PRE-SAFE inopera‐
tive See Owner's tive See Owner's
Manual Manual
Possible causes/consequences and M M Solutions
There is insufficient brake fluid in the brake fluid reservoir.
In addition, the red J warning lamp lights up on the instrument
cluster and a warning tone sounds.
G
WARNING
Braking efficiency may be impaired.
There is a risk of an accident.
Stop the vehicle safely as soon as possible, paying attention to road
X
and traffic conditions. Do not drive on.
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 fault.
X
The brake pads/linings have reached their wear limit.
Consult a qualified specialist workshop.
X
One or more main features of the Mercedes-Benz Contact system is/
are malfunctioning.
Consult a qualified specialist workshop.
X
Active Brake Assist is temporarily inoperative.
Possible causes:
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
Once the causes listed above no longer apply, the display message
disappears.
Active Brake Assist is operational again.
If the display message does not disappear:
Stop the vehicle, paying attention to road and traffic conditions.
X
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.
Consult a qualified specialist workshop immediately.
X
®
Important PRE-SAFE
systems, e.g. airbags, remain available.
Consult a qualified specialist workshop immediately.
X
Display messages
Y
Y
functions have failed. All other occupant safety
page 166).
page 166).
Z
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