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.
Immobilizer Control System Self-Diagnosis Function
ECM and keyless start control module monitor each of the input and output signals of the immobilizer system, and they are equipped with a self-diagnosis function displays DTC when an abnormality is detected.
Also, when an abnormality is detected, immobilizer indicator light flashes on and off or comes on to warn the driver.
Conditions vary depending on the details of the abnormality, but the basic lighting patterns indicate the following
- Light on: Engine can be started
- Blinking: Engine can not be started
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.