1 Function prerequisites
Key in ignition or glow/starter switch in position 2 (circuit 15).
2 Thermostat on rear of mirror glass measures temperature of mirror glass.
3 At a mirror glass temperature of
15 °C the mirror defroster is switched on by the thermostat.
25 °C on the mirror glass the mirror defroster is switched off by the thermostat.
5 The mirror defroster continues to be switched on and off until the temperature on the mirror remains
15 °C.