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Display messages
Possible causes/consequences and MM Solutions
Radar SensorsRadar Sensors
Dirty See Opera‐Dirty See Opera‐
tor's Manualtor's Manual
The radar sensor system is malfunctioning.
Possible causes are:
R
dirt on sensors
R
heavy rain or snow
R
when 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 malfunction-
ing or is temporarily unavailable:
R
Active Brake Assist
R
Active Brake Assist with cross-traffic function
R
Active Distance Assist DISTRONIC
R
Active Steering Assist
R
Active Lane Keeping Assist
R
Active Blind Spot Assist
R
PRE-SAFE
®
PLUS
If the radar sensor system in front 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 and
drive safety systems will be available again. The display message
disappears.
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
Switch off the engine.
X
Clean all sensors (Y page 275).
X
Restart the engine.
The display message disappears.
A
Malfunction Ser‐Malfunction Ser‐
vice Requiredvice Required
The roll bars are faulty.
G
WARNING
The roll bars will then possibly not be extended in the event of an
accident.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
Display messages
213
On-board computer and displays
Z
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