E46Forum.co.uk

Posted: **Tue Oct 01, 2024 11:41 am**

Troubleshooting BMW E46 325i (M54B25) central locking system failures

Common issues:

Doors not locking/unlocking
Key fob not working
Inconsistent operation

Diagnostic steps:

Check key fob battery
Inspect door lock actuators
Test General Module (GM) functionality
Check wiring for breaks or corrosion

Potential fixes:

Replace key fob battery
Rebuild or replace faulty door lock actuators
Replace General Module if faulty
Repair damaged wiring
Reprogram key fobs if necessary

Note: The central locking system is integrated with the car's security system. Be cautious when working on these components to avoid triggering alarms or immobilizer issues.