Electrically Heated Rear Window and Door Mirrors

The electrically heated rear window and electrically heated door mirrors are switched on and off with a switch on the heating panel. In cars with ACC automatic climate control, activation is via the ACC unit. When the electrically heated rear window is activated, elements 207 in electrically heated door mirrors 126 and 127 are also supplied with current.

Current is supplied via fuse 18 to terminal 30 on time-delay relay 113. When the ignition switch is in the Drive position, current is also supplied via fuse 13 to terminal 15 on time-delay relay 113 and via fuse 9 to spring-loaded switch 116.

Instead of time-delay relay 113, cars with ACC are fitted with an ordinary relay which is controlled by the ACC unit.

When the switch is depressed, supply voltage is fed to relay terminal E, causing the relay to operate. Current from relay terminal 87 flows to electrically heated rear window 115, the electrically heated door mirrors and indicator lamp 47J and then to ground. The relay has a time delay function which maintains the connection for about 10 minutes, after which the circuit is broken.

If the ignition switch is turned to the Lock position while the electrically heated rear window is switched on, the circuit supplying current to the relay will be broken and the relay then breaks the supply of current to the electrically heated rear window, the pilot lamp and the electrically heated door mirrors.