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.
IBU (SMK + BCM + TPMS) & PCM (ECM/TCM) Control Module (Twice overtrial)
This function allows a driver to drive the vehicle by turning on the ignition switch twice before registering its key. It can be implemented only when the engine ECM and the Smart Key system (TP, SMK) are virgin. Starting the engine follows the steps below.
- Ignition ON (not in the cranking state), Ignition OFF, Ignition ON (in the cranking state)
- Timing
When the engine ECM and the Smart Key system (TP, SMK) are virgin,
- For the first ignition ON, remain it between 0.5 and 1.5 sec
- Turn the ignition OFF for 0.2 ~ 1.5 sec
- Turn the ignition switch back ON
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.