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.
Work Procedure
- SAVING VEHICLE SPECIFICATION
CONSULT Configuration
Perform "Before Replace ECU" of "Read / Write Configuration" to save or print current vehicle specification. Refer to Description .
NOTE: If "Before Replace ECU" of "Read / Write Configuration" cannot be used, use the "Manual Configuration" after replacing BCM.GO TO 2.
- REPLACE BCM
Replace BCM. Refer to Removal and Installation .
GO TO 3.
- WRITING VEHICLE SPECIFICATION
Perform "After Replace ECU" of "Read / Write Configuration" or "Manual Configuration" to write vehicle specification. Refer to Work Procedure .
GO TO 4.
- INITIALIZE BCM (NATS)
Perform BCM initialization. (NATS)
WORK END
NO RELATED
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.