See also:

Wiper controls
The vehicle's front and rear wipers are designed to improve the driver's visibility progressively according to the climatic conditions. ...

Switching on
The rear screen demisting/defrosting can only operate when the engine is running. Press this button to demist/defrost the rear screen and (depending on version) the door mirrors. The indicator lamp ...

Rear screen demist - defrost
The control button is located on the air conditioning system control panel. ...