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.
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HOMESERVICE MANUALSLEXUS2004IS 300 BASE, AUTOMATICREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSPOWER WINDOW CONTROL SYSTEMTROUBLESHOOTING
2004 Lexus IS 300 Base, Automatic
Power Window Control System: Troubleshooting
2004 Lexus IS 300 Base, AutomaticSECTION Troubleshooting
SYMPTOM TABLE
| Malfunction symptoms | Applicable |
|---|---|
| Driver's door does not operate. | 1 |
| Passenger's and all rear doors do not operate by using the switches at each seat. | 2 |
| Any of passenger's and rear doors does not operate by using the switches of each seat. | 3 |
| Passenger's and all rear doors are not controlled remotely by using the master switch. (Switches of each door can be operated.) | 4 |
| AUTO UP and AUTO DOWN does not operate. (Prepare a normal master switch.) | 5 |
| DOWN operation operates during door glass AUTO UP operation. | 6 |
| Even though a foreign object is caught, DOWN operation does not function. | 7 |
| After ignition switch has been turned to OFF by using a key, power window function does not operate. | 8 |
- Driver's door does not operate.
- Passenger's and all rear doors do not operate by using the switches of each seat .
- Any of passenger's and all rear doors does not operate by using the switches at each seat.
- Passenger's and all rear doors are not controlled remotely by using the master switch. (Switches at each door can be operated.)
- AUTO UP and AUTO DOWN do not operate. (Prepare a normal master switch.)
- DOWN operates during door glass AUTO UP operation.
- Even through a foreign object is caught, DOWN operation does not function.
- After ignition switch has been turned OFF by using a key, power window function does not operate.
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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.