Rear Window Defogger System: Description

For proper operation of the Rear Window Defogger system, refer to the Owner's Manual.

The system consists of a rear glass with two vertical bus bars and a series of electrically connected grid lines on the inside surface (Fig 1 ). The control switch is located in the HVAC Control Module. The rear window defogger relay is in the Micro Relay Bank which is located behind and above the glove box. The timer is located in the Body Control Module (BCM).

Fig 1: Identifying Rear Window Defogger

Courtesy of DAIMLERCHRYSLER CORP.