Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Heated Back Window Switch
The heated back window system consists of the following:
- Front electronic module (FEM)
- heated back window relay
- switch (part of the climate control assembly
- a series of two layered grid lines baked on the interior surface of the rear window
- system wiring
The switch has a:
- push-button, spring-loaded to neutral position that turns the system on or off.
- FEM-controlled heated back window relay that turns off automatically after approximately 10 minutes of operation or when the button is pressed to the OFF position.
If more than 10 minutes is required, the control can be reactivated for another 10 minutes by momentarily pushing the button to the ON position. This operation can be repeated as necessary.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.