Heated Glass

Heated Glass


Grid lines can be damaged or scraped off with sharp instruments. Care should be taken in cleaning glass or removing foreign materials, decals or stickers. Normal glass cleaning solvents or hot water used with cloths or toweling is recommended.

Description






The rear window defogger system, also known as Electric Backlight (EBL) system, consists of two vertical bus bars (1) and a series of grid lines (2) fired onto the inside surface of the rear window (3).

The EBL system is turned on or off by a push button switch located in the Heating, Ventilation and Air Conditioning (HVAC) control.

Operation

The EBL system is controlled by a momentary push button switch located on the HVAC control in the instrument panel center bezel. When the rear window defogger switch is pressed to the ON position with the ignition switch in run, the HVAC control sends a message on the Controller Area Network (CAN) IHS bus to the Totally Integrated Power Module (TIPM) to energize the EBL relay. When energized, the EBL relay provides battery current to the rear window defogger grid lines and to the heated side view mirrors. when equipped. The heated glass helps clear the rear window and side mirror surfaces of fog or frost.

An indicator lamp in the rear window defogger switch illuminates when the EBL system is on.

• The EBL system turns off automatically after 10 minutes of initial operation. Each following activation cycle of the EBL system will last 5 minutes.

The EBL system will automatically turn off after an initial programmed time interval of about 10 minutes as long as the ignition switch is in RUN. After the initial time interval has expired, if the rear window defogger switch is pressed to the on position again during the same ignition cycle, the EBL system will automatically turn off after about 5 minutes. The EBL system will also turn off if the ignition switch is turned to any position other than RUN or by manually pressing the rear window defogger switch a second time.

Repair of the rear window defogger grid lines, bus bars, terminals or pigtail wires can be accomplished using the rear window defogger repair kit (part number 04549275) or equivalent => [ Rear Window Defogger Grid Line and Terminal Repair ] Procedures

Circuit protection for the EBL system is provided by fuse J14 (40 amp) located in the TIPM.

The EBL control system is diagnosed using a scan tool.