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.
Defogger Switch
Ensure defogger switch indicator light illuminates when switch is turned on. Ensure defogger relay clicks when defogger is turned on, rear defogger system times out or defogger is turned off. Continuity should exist across switch terminals only when switch is pressed on. Continuity should not exist under any other condition. Replace defogger switch if continuity and/or indicator light do not operate as specified.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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