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.
2010 Lexus ES 350FACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
WINDOW DEFOGGER SYSTEM:
| Symptom | Suspected Area | See |
|---|---|---|
| Rear window defogger does not operate | 1. A/C No. 2 fuse | - |
| 2. RR DEF fuse | - | |
| 3. RR DEF relay | Refer to Rear Window Defogger System does not Operate | |
| 4. A/C controller assembly | Refer to Rear Window Defogger System does not Operate | |
| 5. A/C amplifier assembly | Refer to Rear Window Defogger System does not Operate | |
| 6. Rear window defogger wire | Refer to ON-VEHICLE INSPECTION | |
| 7. Wire harness | - |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.