Heated Glass Element: Service and Repair

REAR DEFOGGER RELAY
All junction block relays are interchangeable.

Substitute another relay from either junction block to see if the problem is fixed.

Repair as needed.


REAR DEFOGGER SWITCH
Check the defogger ON Bulb. It should light when the rear defogger switch is ON. The bulb should not be lit with the rear defogger switch OFF.

The rear defogger relay should click when the rear defogger switch is turned ON and click again when the rear defogger switch is turned OFF.

Check rear defogger switch resistance.

Switch resistance: Open when rear defogger is OFF. Less than one ohm when rear defogger is ON.