Display messages
Possible causes/consequences and
M
M
Solutions
PRE-SAFE Functions
PRE-SAFE Functions
limited
limited See
See Owner's
Owner's
Manual
Manual
PRE
‑
SAFE
®
PLUS or PRE
‑
SAFE
®
Brake is unavailable due to a mal-
function. BAS PLUS with Cross-Traffic Assist may also have failed.
X
Consult a qualified specialist workshop immediately.
Radar
Radar sensors
sensors dirty
dirty
See Owner's Manual
See Owner's Manual
The radar sensor system is malfunctioning.
Possible causes:
R
Dirt on sensors
R
Heavy rain or snow
R
Driving on inter-urban roads without traffic or infrastructure, e.g. in
desert-like areas
At least one driving system or driving safety system is malfunctioning
or is temporarily unavailable:
R
PRE-SAFE
®
PLUS
R
PRE-SAFE
®
Brake
R
COLLISION PREVENTION ASSIST PLUS
R
Active Lane Keeping Assist
R
Active Blind Spot Assist
R
DISTRONIC PLUS with Steering Assist and Stop&Go Pilot
If the front radar system sensor is dirty, Active Blind Spot Assist will
not perform a course-correcting brake application.
Once the cause of the problem is no longer present, the driving sys-
tems and driving safety systems will be available again. The display
message disappears.
If the display message does not disappear:
X
Stop the vehicle, paying attention to road and traffic conditions.
X
Secure the vehicle against rolling away (
Y
page 159).
X
Switch off the engine.
X
Clean all sensors (
Y
page 319).
X
Restart the engine.
The display message disappears.
6
Restraint sys. mal‐
Restraint sys. mal‐
function Consult
function Consult
workshop
workshop
The restraint system is malfunctioning. The
6
warning lamp also
lights up on the instrument cluster.
G
WARNING
The airbags or belt tensioners may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
This poses an increased risk of injury!
X
Consult a qualified specialist workshop immediately.
Further information about the restraint system (
Y
page 42).
Display messages
249
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