Rear Window Defogger Switch
WARNING: This page is about a different car, the 2002 Dodge Grand Caravan, 2002 Dodge Caravan, 2002 Chrysler Voyager, and 2002 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
The Rear Window Defogger Switch is a momentary contact switch. Toggling the switch results in the A/C-Heater Control Module sending a change of state message to the FCM to provide rear window defogger activation or deactivation respectively. The switch status indicator illuminates when the switch is on.