Operation Manual

Display messages
Possible causes/consequences and M Solutions
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
Active Lane Keeping Assist
R
Active Blind Spot Assist
R
DISTRONIC PLUS with Steering Assist and Stop&Go Pilot
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 189).
X
Switch off the engine.
X
Clean the sensors in the following locations (Y page 362):
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.
Check Left Rear
Belt See Operator's
Manual or Check
Right Rear Belt See
Operator's Manual
The seat belt buckle extender on the right or left of the rear compart-
ment is not in the predefined position. The belt strap may be jammed
in the belt tongue.
G
WARNING
If the seat belt buckle extender is not in the predefined position, the
seat belt cannot provide the intended level of protection.
There is an increased risk of injury.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Release the jamming.
X
Repeat the seat belt fastening procedure.
Display messages
285
On-board computer and displays
Z