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Visibility
Rain sensor*
Fig. 121
Wiper lever: adjust the rain sensor
A.
Fig. 122
Rain sensor sensitive surface
The rain sensor controls the frequency of the
windscr
een wiper int
ervals, depending on the
amount of rain
›››
. The sensitivity of the rain
sensor can be adjust
ed manually. Manual
wipe
›
››
page 125.
Move the lever to the required position
›››
Fig. 121:
Rain sensor off.
Rain sensor on; automatic wipe if neces-
sary.
Setting sensitivity level of rain sensor
–
Set control to the right: high sensitivity.
–
Set control to the left: low sensitivity.
When the ignition is switched off and then
back on, the rain sensor stays on and starts
operating again when the windscreen wipers
are in position
1
and the vehicle is travelling
at mor
e than 16 km/h (
10 mph).
Modified behaviour of the rain sensor
Possible causes of faults and mistaken read-
ings on the sensitive surface
›››
Fig. 122 of the
rain sensor include:
●
Damaged wipers: a film of water on the
damaged blades may lengthen the activa-
tion time, reduce the washing intervals or re-
sult in a fast and continuous wipe.
●
Insects: insects on the sensor may trigger
the windscreen wiper.
●
Salt on the road: in winter, salt spread on
the roads may cause an excessively long
wipe when the windscreen is almost dry.
●
Dirt: dry dust, wax, coating on glass (Lotus
effect) or traces of detergent (car wash) may
reduce the effectiveness of the rain sensor or
make it react more slowly, later or not at all.
0
1
A
●
Windscr
een cr
ack: the impact of a stone
will trigger a single wipe cycle with the rain
sensor on. Next the rain sensor detects the re-
duction in the sensitive surface area and
adapts accordingly. The behaviour of the
sensor will vary with the size of the damage
caused by the stone.
WARNING
The rain sensor may not detect enough rain
to s
witch on the wipers.
●
If necessary, switch on the wipers man-
ually when water on the windscreen ob-
structs visibility.
Note
●
Clean the sensitiv
e surface of the rain
sensor regularly and check the blades for
damage
›››
Fig. 122 (arrow).
●
To remove wax and coatings, we recom-
mend a window cleaner containing alco-
hol.
●
Do not put stickers on the windscreen in
front of the rain sensor*. This may cause
sensor disruption or faults.
127
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