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 MANUALSHYUNDAI2003XG350 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (COMPUTER RELEARN PROCEDURES - IMPORT)MAZDAINPUTTING CODE WORD
2003 Hyundai XG350 Base
Inputting Code Word
2003 Hyundai XG350 BaseSECTION Inputting Code Word
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- Code word is comprised of 8 digits from 1-9. The code word is part of immobilizer unit. To obtain code word call manufacturer with immobilizer unit serial number.
- The immobilizer unit code word is input to PCM by cycling ignition key and counting number of SECURITY light flashes. Wait about 5 minutes until SECURITY light flashing has decreased to 1.2-second interval. Input code word with SECURITY light sequence. See Fig 1.
- Turn ignition switch to ON position for length of time required for SECURITY light to flash the same number of times that coincides with first code word digit. Turn ignition switch to LOCK position for at least one flash, but for less than 30 seconds. Repeat procedure for each code word digit. When code word is registered correctly, SECURITY light will stop flashing and stay illuminated. Continue immobilizer system reprogram 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.