Switching the rear window heater on/off
The rear window heater consumes a lot of electricity. You should therefore switch off the rear window heater as soon as the rear window is clear.
Switch on the vehicle.
Press the 
button on the control panel.
button on the control panel. If the indicator lamp on the button lights up, the rear window heater is switched on.
The rear window heater will switch off automatically after a few minutes.