Warning signs that your Immobilizer Control Module might be failing include:
- The car won't start, even though the battery is good and the starter motor is turning.
- The security light on the dashboard stays on or flashes continuously.
- The car starts and then immediately stalls.
- The key is not recognized by the car's system.
- Intermittent starting problems that become more frequent.
To test if the Immobilizer Control Module is the problem, you'll need to rule out other possibilities. A mechanic can use a diagnostic scanner to check for error codes related to the immobilizer system. They can also check the wiring and connections to the module to make sure everything is properly connected. It's important to verify the key transponder is working correctly before replacing the module.
Common causes of failure for this part include:
- Electrical surges or voltage spikes.
- Water damage or corrosion.
- Physical damage from accidents or impacts.
- Internal component failure due to age and wear.
