Description
Electric central locking actuator for the right rear door for Citroën C4 5-door models. Passenger-side rear door.
This electric door lock is a direct-fit replacement for the right rear (passenger-side) door of Citroën C4 five-door vehicles. It restores reliable central locking operation by driving the latch mechanism via an internal motor and geartrain and connects directly to the vehicle wiring harness. Commonly searched under part numbers 9647175080, 9681336880 and 9660700280 and reference codes 9138F2, 9138T5, 9138N4, this unit is suitable for professional workshops and competent DIY enthusiasts looking for a straightforward repair of rear-door locking faults.
Function and Benefits: The actuator converts electrical pulses from the central locking system or remote key fob into mechanical movement to engage and release the door latch. Replacing a faulty actuator restores door locking/unlocking, prevents water ingress into the door electronics, and removes intermittent locking behaviour. Designed for plug-and-play installation with the factory latch assembly, it reduces workshop time compared with complex electrical troubleshooting when the root cause is a failed actuator.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (5-door) – Right Rear Door (Passenger Side)
- Product Codes: 9647175080
- Other Numbers: 9681336880, 9660700280; Reference Codes: 9138F2, 9138T5, 9138N4
Installation Recommendations
- Safety First: Before beginning any work on electrical components, disconnect the negative battery terminal to avoid short circuits and accidental actuator activation.
- Door Removal: Remove the interior door trim carefully to access the lock assembly—start by removing screws, trim clips and the door handle bezel. Keep fasteners organized.
- Disconnecting the Unit: Unplug the electrical connector from the actuator and detach linkage rods from the actuator lever. Note or photograph linkage orientation for reassembly.
- Replacing the Actuator: Remove the mounting screws or rivets securing the actuator to the latch, fit the new unit, reconnect linkages and the electrical plug, then test the central locking operation before reinstalling the door trim.
- Final Checks: Verify smooth movement of the latch and secure fitment. Check for water ingress points and reseal or replace the door vapor barrier if necessary.
Common Failure Causes
- Water Ingress: Moisture entering the door can corrode electrical contacts or damage the motor and internal gears.
- Worn Plastic Gears: Repeated use causes plastic gear teeth to wear or shear, preventing the actuator from moving the latch.
- Motor Burnout: The small DC motor inside the actuator can fail after many cycles or under electrical stress.
- Broken Linkage Or Clips: Mechanical linkages and plastic clips that connect the actuator to the latch can fracture, resulting in a non-functioning lock.
- Connector Corrosion Or Wiring Faults: Corroded pins or intermittent wiring can interrupt power or signal to the actuator; inspect connectors during replacement.
Suitable For: Professional garages and competent DIYers working on Citroën C4 five-door models who require a reliable replacement for a malfunctioning right rear door lock actuator. Because many customers search by part number, check the item codes listed above when ordering to ensure correct fitment.
