Mercedes-Benz C-Sedan 2015 Owners Manual - Manual (Page 262)

Display messages Possible causes/consequences and M M Solutions
Radar Sensors Radar Sensors
Dirty See Opera‐ Dirty See Opera‐
tor's Manual tor's Manual
At least one of the following driving systems or driving safety sys-
tems is temporarily restricted or inoperative:
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
Possible causes are:
R the sensors in the radiator trim and/or in the bumpers are dirty.
R the function of the driving system and/or driving safety system
is impaired due to heavy rain or snow.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears. All driving systems/driving safety systems are
operative 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 174).
X Switch off the engine.
X
Clean the sensors in the following locations (
Y
page 334):
R
in the radiator trim
R
in the front bumper
R in the rear bumper, particularly in the middle of the rear
bumper
X
Restart the engine.
The display message disappears.
6
SRS Malfunction SRS Malfunction
Service Required Service Required
The restraint system is faulty. The 6 warning lamp also lights
up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop.
For further information about the restraint system, see
(
Y
page 42).
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Display messages
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