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Rover 400 Series Key Fob Faults

General Faults

The Rover remote key fob uses Lucas 3TXA 3TXB or 17TN, it forms an integral part of the Alarm and Immobiliser system The alarm system is quite complex and very difficult to defeat. When it's working it's very good but because of it's complexity, it fails quite often. This is indicated by difficulty in operation ( having to press key fob buttons multiple times), difficulty or inability to disarm the Immobiliser (after entering the vehicle with the key), total failure of the key fob etc etc.

Problem Symptom
Fob Out of sync Unable to unlock central locking.
Unable to dis-engage Immobiliser.
Key Fob Flat
Battery
Unable to unlock central locking.
Unable to dis-engage Immobiliser.
Noticeable Degradation of remote operation over time.
Defective Key
Fob Buttons
Unable to lock central locking, but unlock is OK.
Unable to unlock central locking, but lock is OK.
Having to press harder or multiple times to lock or unlock.
Damaged or torn rubber cover.


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