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.
Circuit/System Verification
- Perform the Programming and Setup procedure for the control module that set DTC B3902.NOTE:
When performing the following step, Immobilizer System Component Programming, the module may also need to be reset by using the SPS function Prepare For Removal.
- Perform the Immobilizer System Component Programming Immobilizer System Component Programming .
- Verify DTC B3902 does not set after programming.
- If the DTC sets after programming
Replace the control module that set the DTC.
- Go to next step: If the DTC does not set after programming
- If the DTC sets after programming
- All OK.
If the Immobilizer System Component Programming with existing keys procedure does not work then perform the procedure for new keys but continue to use the existing keys.
NO RELATED
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.