Warning Signs of a Failing Telematics Control Module:
- Loss of communication with the vehicle's computer
- SOS calls not functioning
- GPS or navigation system malfunctions
- Bluetooth connectivity issues
- Remote services (like unlocking doors with a phone app) not working
Testing the Telematics Control Module:
- Check the vehicle's battery voltage. A low battery can cause communication problems.
- Use a diagnostic scan tool to check for error codes related to the telematics system.
- Inspect the wiring and connectors for damage or corrosion.
- If possible, try swapping the module with a known good one to see if the problem is resolved. This should be done by a qualified technician.
Common Failure Causes:
- Water damage or corrosion
- Electrical surges
- Physical damage from accidents
- Software glitches or corruption
- Age and normal wear and tear