Pic. 8.53. Rear window heating system: 1 – the relay of a heater of back glass; 2 - climate control unit (automatic air conditioning system); 3 - climate control unit (manual air conditioning system); 4 – the switch of a heater of back glass; 5 - exterior heated mirror; 6 – a thread of a heater of back glass
The electric rear window defroster can only function if the ignition switch is in the «ON» (Ignition on).
Pic. 8.54. Wiring diagram of the heated rear window: 1 - fuse DEFOG 40 A; 2 - fuse METER IG 15 A; 3 – the relay of a heater of back glass; 4 – air conditioner control unit; 5 - microcomputer; 6 – the switch of a heater of back glass; 7 – a control lamp of a heater of back glass; 8 - rear window heater; 9 - heated exterior mirror
Press the switch to turn on the electric rear window defroster. The electric heater turns on for about 10-15 minutes and then turns off automatically. When the electric heater is operating, the corresponding indicator lights up (pic. 8.54).
To forcibly turn off the electric heater before 10–15 minutes have elapsed, press the switch again.