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Operation
last wipe. For the “drip” function to work
again, you hav
e to turn the ignition off and
then on again.
Rain sensor
Fig. 102 Wiper lever: adjust the rain sensor
A.
Fig. 103 Rain sensor sensitive surface
The rain sensor controls the frequency of the
windscr
een wiper intervals, depending on the
amount of rain
›››
. The sensitivity of the rain
sensor can be adjust
ed manually. Manual
wipe
›››
page 122.
Move the lever to the required position
›››
Fig. 102:
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 remains active and
starts operating again when the windscreen
wipers are in position
1
and the vehicle is
tr
avelling at more 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. 103 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.
0
1
A
●
Salt on the r
oad: 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.
●
Windscreen crack: 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
t
o switch on the wipers.
●
If necessary, switch on the wipers man-
ually when water on the windscreen ob-
structs visibility.
Note
●
R
egularly clean the sensitive surface of
the rain sensor
›››
Fig. 103 (arrow) and
check for possible damage to the wiper
blades.
●
To remove wax and coatings, we recom-
mend a window cleaner containing alco-
hol.
124
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