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.
PASSLOCK™ Auto Learn: Conditions
If a new vehicle/powertrain control module (VCM/PCM) is being installed for the first time the manufacturing enable bit will be set and the auto learn procedure may not be necessary.
The following procedure allows the relearning of the Passlock™ module or the VCM/PCM learned data code after the replacement of any of the following parts:
- The Passlock™ module
- The Passlock™ sensor
- The VCM/PCM
The Passlock™ module will set the DTC B3031 module in the learn mode when entering the reprogramming procedure.
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.
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