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 Isuzu Ascender 2WD L6-4.2LFACTORY OEM SERVICE PROCEDURE
Keyless Entry System - Inoperative
TSB SBO3-04-S004
Remote Keyless Entry Inoperative (Reprogram Liftgate Module)
ISSUE DATE: OCTOBER 2003
Affected Vehicles
2003 Isuzu Ascender (US).
Service Information
Condition:
Some customers may comment that the Remote Keyless Entry (RKE) is inoperative at times.
Possible Cause:
The Liftgate Module software is affected when the temperature is approximately 40°C (104°F).
Correction:
Using normal SPS reprogramming, procedures reprogram the LGM Liftgate module using ITCS CD # 27 or later.
Warranty Claim Information
Use the labor operations shown.
Labor Time includes administrative time allowance.
Disclaimer
Remote Keyless Entry Inoperative (Reprogram Liftgate Module)
ISSUE DATE: OCTOBER 2003
Affected Vehicles
2003 Isuzu Ascender (US).
Service Information
Condition:
Some customers may comment that the Remote Keyless Entry (RKE) is inoperative at times.
Possible Cause:
The Liftgate Module software is affected when the temperature is approximately 40°C (104°F).
Correction:
Using normal SPS reprogramming, procedures reprogram the LGM Liftgate module using ITCS CD # 27 or later.
Warranty Claim Information
Use the labor operations shown.
Labor Time includes administrative time allowance.
Disclaimer
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.