Key in ignition in position 1 or 2.
At the included heating of back glass in the switch the control bulb burns.
Attention! Heated rear window requires a lot of energy. Therefore, when you achieve the desired result, immediately turn off this mode. The automatic switchover of the heated rear window will take place after 20 minutes at the latest.
Snow or frost must first be removed from the outside of the glass.
If many consumers are switched on or the battery is not sufficiently charged, the rear window heating may turn off (in this case, the control lamp in the switch flickers) and turns on automatically when the desired voltage appears.