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.
Problem Symptoms Table
HINT:
Use the table below to help determine the causes of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in order they are listed. Replace parts as necessary.
Window defogger system
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear window defogger does not operate (indicator ON) | 1. DEF H-fuse | PARTS LOCATION |
| 2. Defogger wire | PROBLEM SYMPTOMS TABLE | |
| 3. Wire harness | - | |
| Rear window defogger does not operate (indicator OFF) | 1. IG1 relay | PROBLEM SYMPTOMS TABLE |
| 2. DEF relay | PROBLEM SYMPTOMS TABLE | |
| 3. AM1 fuse | PARTS LOCATION | |
| 4. GAUGE fuse | PARTS LOCATION | |
| 5. DEF H-fuse | PARTS LOCATION | |
| 6. A/C control assembly | PROBLEM SYMPTOMS TABLE | |
| 7. Defogger wire | PROBLEM SYMPTOMS TABLE | |
| 8. Wire harness | - |
NO RELATED
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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.