Description
Central Locking Controller For Citroën C4 First Generation
High-quality Central Locking Controller designed for Citroën C4 first generation vehicles. Ideal for professional mechanics and experienced DIYers looking for a direct-fit replacement part. Commonly searched under part numbers 96476626XT and 6554LF, this controller manages door lock signals from remote keys and interior switches and ensures reliable locking/unlocking of all doors. Compatible with standard central locking systems used on early C4 models and suitable as an OE-equivalent replacement when original modules fail.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C4 (First Generation)
- Product Codes: 96476626XT, 6554LF
- Other Numbers: Commonly Listed Under 6554LF | 96476626XT
Function And Compatibility
The controller receives lock/unlock commands from the remote key and door switches, controls relays or outputs to the door lock actuators, and interfaces with the vehicle’s comfort/electrical system to centralize locking functions. It is intended for Citroën C4 first generation models (approximately mid-2000s era). Always verify the part number against the unit being replaced to ensure fitment.
Replacement And Installation
Installation should be performed by a trained technician or an experienced DIYer familiar with vehicle electrics. General replacement steps:
- Disconnect the vehicle battery before starting work to avoid shorts or damage to electronic modules.
- Locate the central locking controller—commonly found behind interior trim panels or in the passenger footwell/glovebox area depending on variant.
- Carefully remove trim panels to access the module and unplug electrical connectors.
- Swap the defective module with the replacement, ensuring connectors are fully seated and locking tabs engage.
- Reconnect the battery and verify central locking operation with both key fob and door switches. Cycle locks several times and check all doors for proper function.
Installation Recommendations
- Always Disconnect The Battery Before Removing Or Installing The Unit.
- Inspect Connectors And Wiring For Corrosion Or Damage Before Reassembly; Repair Any Faults To Prevent Recurrence.
- If The Remote Does Not Work After Fitment, Attempt Manual Resynchronization Per Vehicle Handbook Or Use Factory Diagnostic Tools For Advanced Diagnostics.
- Use Correct Part Numbers (96476626XT / 6554LF) To Ensure Pinout And Mounting Match The Original Unit.
Why This Part Commonly Fails
Central locking controllers typically fail due to moisture ingress and corrosion, worn relay contacts or solder joints, electrical surges, or connector faults. Repeated exposure to damp conditions or a compromised door seal can accelerate corrosion. Mechanical strain on wiring and intermittent short circuits may also damage internal components over time. Symptoms include intermittent locking/unlocking, failure of one or more doors to lock, or complete loss of central locking control.
Practical Notes For Mechanics
This controller is a practical, direct-replacement solution for common central locking faults on Citroën C4 first generation vehicles. Keep spare connectors and dielectric grease on hand when servicing to protect terminals and prolong service life. Verify full system function after installation, including remote locking, interior lock switches, and any linked security or alarm features.
Part Numbers For Search Engines And Ordering: 96476626XT, 6554LF. Use these codes to quickly locate the correct item in catalogs and online listings.
