CITROEN Grand C4 PICASSO Owner's Handbook Manual page 220

Visibility
Operating fault
If a fault occurs with the automatic rain
sensitive wipers, the wipers will operate in
intermittent mode.
Have it checked by CITROËN dealer or a
qualified workshop.
Do not cover the rain sensor, linked with
the sunshine sensor and located in the
centre of the windscreen behind the rear
view mirror.
Switch off the automatic rain sensitive
wipers when using an automatic car wash.
In winter, it is advisable to wait until the
windscreen is completely clear of ice
before activating the automatic rain
sensitive wipers.
218
Special position of the
windscreen wipers
This position permits release of the windscreen
wiper blades.
It is used for cleaning or replacement of the
blades. It can also be useful, in winter, to
detach the blades from the windscreen.
On switching off the ignition:
any action on the wiper stalk in the minute
after switching off the ignition places the
blades vertically on the screen.
When the system is no longer powered - at least
one minute after switching off the ignition - it is
possible to move the arms manually.
To park the blades again, switch on the
ignition and operate the wiper stalk.
To maintain the effectiveness of the
"flat-blade" type of wiper blades, it is
advisable to:
- handle them with care,
- clean them regularly using soapy
water,
- avoid using them to retain
cardboard on the windscreen,
- replace them at the first signs of
wear.
Replacement of the arms must only
be done by a CITROËN dealer or a
qualified workshop.