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.
Rear Defog Switch & Timer
The chime module provides the timing function and control of the rear defog system. When the rear defog switch is pressed for the first time in an ignition cycle, the rear defog element and switch indicator will come ON, and stay ON for 15 minutes unless the ignition is turned to either the ACC or LOCK position or the rear defog switch is pressed again to turn the system OFF. Subsequent activations of the switch, prior to cycling the ignition, when the rear defog is OFF, will result in the same operation, except the time the defogger is ON is reduced to 7.5 minutes.
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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.