Vauxhall Corsa Owner's Manual page 205

To ensure proper operation of the rain
sensor 3, the sensor area must be free from
dust, dirt and ice. The windscreen wash
system must also be operated at regular
intervals and the sensor area must be de-
iced. Vehicles with rain sensor 3 can be
identified by the sensor area near the top
of the windscreen.
Wiper blades on the windscreen
Lift wiper arm. Move release lever and
detach wiper blade.
Wiper blade on the rear window 3
Lift wiper arm. Disengage wiper blade as
shown in illustration and remove.
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