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 160 (ANTI-THEFT SYSTEM)PROGRAMMINGANTI-THEFT SYSTEMACTIVATING SYSTEM
2004 Toyota Celica GT, Standard
Activating System
2004 Toyota Celica GT, StandardSECTION Activating System
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
The alarm sounds for 60 seconds if any of the following are operated:
- Unlocking any door without using an ignition key or wireless remote control.
- Opening the hood forcibly.
- Reconnecting the battery.
If any door is unlocked and the ignition key is not in the ignition switch during the alarm sounding, it's door is automatically locked.
To stop the alarm:
- Unlock the door using an ignition key or wireless remote control.
- Turn the ignition switch on.
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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.