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.
2003 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Computer Relearn Procedures
- Introduction
- Service Precautions (PRIUS)
- Immobilizer Programming (Except PRIUS)
- Additional Master Key Registration (Except PRIUS)
- Additional Sub-Key Registration (Except PRIUS)
- Erasure Of Transponder Key Code (Except PRIUS)
- Immobilizer Component Replacement Programming Procedures (PRIUS)
- Notes
- Programming When Replacing Transponder Key Electronic Control Unit
- Programming When Replacing Hybrid Vehicle Control Electronic Control Unit
- Programming When Replacing Transponder Key Electronic Control Unit & Hybrid Vehicle Control Electronic Control Unit
- Programming If All Ignition Keys Are Lost
- Ignition Key Registration
- Additional Master Key Registration
- Additional Sub-Key Registration
- Erasure Of Transponder Key Code
- Power Sliding Door REINITIALIZATION Procedure (Sienna)
- Sun Roof Initialization (CAMRY & CELICA)
Factory Service Tools
Use the Manual With the Right Hardware
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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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