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 MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 308 (HYBRID VEHICLE IMMOBILIZER SYSTEM)
2004 Toyota Celica GT, Standard
Section 308 (Hybrid Vehicle Immobilizer System)
2004 Toyota Celica GT, StandardSECTION Section 308 (Hybrid Vehicle Immobilizer System)
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
- Service Precautions
- Troubleshooting
- Hybrid Vehicle Immobilizer System
- Hybrid Vehicle Immobilizer System Registration Procedure
- Step 1 - Communication Between Hybrid Vehicle Control ECU And Transponder Key ECU Is As Follows
- Step 2 - Procedures When You Exchange Transponder Key ECU
- Step 3 - If All Keys Are Lost, Observe The Following
- Step 4 - Setting Hybrid Vehicle Immobilizer System
- Step 5 - Unsetting Hybrid Vehicle Immobilizer System
- Step 6 - Key Registration In Automatic Registration Mode
- Registering Master Key
- Step 7 - Step 8 - Registering Sub-key
- Step 9 - Erasure Of Transponder Key Code
- Component Location
- Pre-Check
- Hybrid Vehicle Immobilizer System Inspection
- Hybrid Vehicle Immobilizer System Registration Procedure
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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.