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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 146 (ENGINE IMMOBILIZER SYSTEMS)PROGRAMMINGREGISTRATION OF ADDITIONAL MASTER KEYUSING TOYOTA HAND-HELD TESTER
2004 Toyota Celica GT, Standard
Using Toyota Hand-Held Tester
2004 Toyota Celica GT, StandardSECTION Using Toyota Hand-Held Tester
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- Connect hand-held tester to data link connector No. 3. See Figure. When using hand-held tester, more detailed procedures may be displayed on tester while performing this procedure.
- Insert registered master key in ignition lock cylinder. Turn ignition on. Select MASTER KEY REGISTRATION on hand-held tester. Within 20 seconds, remove master key from ignition lock cylinder.
- Within 10 seconds of removing master key from ignition lock cylinder, insert master key to be registered in ignition lock cylinder. Ensure SECURITY indicator light flashes. SECURITY indicator light is located just above the fuel gauge on instrument cluster.
- After one minute, additional master key should be registered and SECURITY indicator light should then turn off. The registration mode is complete after removing master key from ignition lock cylinder within 10 seconds and brake pedal is depressed, or SECURITY indicator light has turned off for at least 10 seconds.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra 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.