Display messages
Possible causes/consequences and M Solutions
PRE-SAFE Functions
Limited See Opera‐
tor's 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
Visit a qualified specialist workshop immediately.
Radar Sensors Dirty
See Operator's Man‐
ual
At least one of the following driving systems or driving safety systems
is temporarily restricted or inoperative:
R
PRE-SAFE
®
PLUS
R
PRE-SAFE
®
Brake
R
COLLISION PREVENTION ASSIST PLUS
R
DISTRONIC PLUS with Steering Assist and Stop&Go Pilot
R
Active Lane Keeping Assist
R
Active Blind Spot Assist
If the radar sensor system in front is dirty, Active Blind Spot Assist will
not perform a course-correcting brake application.
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 message
disappears. All driving systems and driving safety systems are oper-
ative 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 178).
X
Switch off the engine.
X
Clean the sensors in the following locations (Y page 365):
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 Ser‐
vice 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 triggered
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 immediately.
For further information about the restraint system, see (Y page 44).
288
Display messages
On-board computer and displays
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