Adjusting the sensitivity of the rain and light
sensor
The sensitivity of the rain and light sensor can be
adjusted manually with the remote control.
–
Windscreen wiper blades in poor condition:
The presence of a film or streaks of water
due to poor wiper blades can lead to
prolonged wiper operation, significantly
shortened wiping intervals or rapid and
continuous wiping.
1
located on the windscreen
wiper lever → .
– Insects: The impact of mosquitoes on the
windscreen can cause the windscreen wiper
to start.
– Moving the knob to the right: high sensitivity
level.
– Moving the knob to the left: low sensitivity
level.
– Traces of salt: In winter, the windscreen
wiper may operate longer than normal due to
traces of salt on the almost dry windscreen.
WARNING
– Dirt: Dried dust, wax, protective films (lotus
effect), detergent residues (from the car
wash), etc. on the windscreen can cause the
rain and light sensor to react less sensitively,
later, more slowly or not at all. Regularly
clean the reference surface of the rain and
light sensor → p. 372 and check the wiper
blades for damage.
The rain and light sensor cannot always
detect precipitation accurately enough and
switch the wiper on properly.
● If necessary, switch on the windscreen
wiper manually in good time if water on
the windscreen makes it difficult to see.
–
Crack in windscreen: The impact of a foot- dra
causes the windscreen wiper to perform a
wiping cycle if the rain and light sensor is
activated. The sensor then detects that the
reference surfaces have been reduced and
adapts. Depending on the size of the impact,
the activation behaviour of the sensor may
change.
Problems and solutions
The washer fluid level is too low. Fill the
washer fluid reservoir at the next
opportunity → page 319.
There is a fault in the rain and light
sensor. Switch the ignition off and on
again. If, after switching on the ignition,
the indicator light comes on
permanently, call in a qualified
technician.
There is a fault in the windscreen wiper.
Switch off and switch the ignition back
on. If, after switching on the ignition, the
indicator light comes on continuously
again, seek the assistance of qualified
personnel.
To remove wax or polish residues, it is
recommended to use a glass cleaner containing
alcohol.
If the wiper encounters an obstacle on the
glass, it will try to sweep it away. If the
If the obstacle continues to block the operation
of the wiper, the wiper will stop. Remove the
Obstacle and connect the wiper again.
Abnormal operation of the rain and light
sensor
Examples of possible causes of anom- alies and
misinterpretations in the area of the reference
surface → p. 7 of the rain and light sensor:
140
Instruction manual