Switching the rear window wiper on/off
Requirements:
The power supply has been switched on.
Wiping with washer fluid
Intermittent wiping
Rear window wiper off
Wiping with washer fluidMove the 
switch to the corresponding position.
switch to the corresponding position. When the rear window wiper is switched on, the on-board computer will show the symbol on the Assistance graphic menu.
To wipe with washer fluid:
push the switch beyond its current position as far as it will go towards or and hold it there.