What to do if Automatic Systems BL40 Automobile Electronics shows 'Unlock BL4x Er'?
- PPeggy GomezAug 3, 2025
If the 'Unlock BL4x Er' message appears, it means the inductive sensor hasn't detected the release of the lock within 3 seconds after the open or close request. Check if the locking pin is pressing on the locking clips, or if the sensor itself is defective.