Description
Electric central locking actuator for the right rear door for Citroën C4 5-door models. Passenger-side rear door.
Description
High-quality replacement electric lock actuator for the right rear (passenger-side) door of Citroën C4 5-door vehicles. This actuator operates the central locking mechanism and the mechanical latch, enabling remote and central locking/unlocking of the rear door. The unit corresponds to OEM reference numbers commonly used in Stellantis parts catalogs, for example 9681336880, 9660700280, 9138F2, 9138T5 and 9138N4. Ideal for professional workshops and experienced DIY mechanics who require a direct-fit solution for door lock failures.
Function
The actuator converts electrical signals from the central locking system into mechanical movement to engage or release the door latch. It integrates motor-driven gears and linkages that move the locking rod and latch pawls. Proper operation ensures secure door closure, correct central locking synchronization and reliable remote locking/unlocking.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (5-door) — Right Rear Door (Passenger Side)
- Product Codes: 9681336880, 9660700280
- Other Numbers: 9138F2, 9138T5, 9138N4
Compatibility Notes
Designed primarily for Citroën C4 5-door models for the right rear door. Verify the part numbers stamped on the original unit and compare connector and mounting points before installation. The listed OEM codes are often used when searching or ordering this part.
Installation Recommendations
- Tools Required: Phillips/torx screwdrivers, trim removal tools, ratchet set, multimeter for electrical checks, and dielectric grease for connectors.
- Procedure Overview: Remove interior door trim carefully to access the lock assembly; disconnect the actuator electrical connector; detach any linkage rods from the actuator and remove the retaining screws or clips; install the new actuator, reconnect linkages and connectors, then test central locking function before reassembling the door trim.
- Safety Tip: Disconnect or isolate the battery to avoid short circuits while working on electrical connectors. Take care with plastic clips and trim to avoid breakage.
- Setup: After installation confirm that the latch operates smoothly through the full travel, lubricate moving parts with light grease if necessary, and ensure wiring is routed clear of pinch points and window channels.
Common Failure Causes
- Water Ingress and Corrosion: Moisture penetration into the door can corrode contacts, gears or electrical connectors, leading to intermittent or permanent failure.
- Wear of Plastic Gears and Linkages: Repeated use causes plastic gear teeth or linkage clips to wear or break, preventing proper actuation of the latch.
- Electrical Faults: Broken wires in the door harness, connector corrosion, or poor grounding can stop the actuator receiving power or signals.
- Mechanical Obstruction: Misaligned latch, bent rods or foreign debris in the latch mechanism can overload the actuator motor and cause failure.
- Age-Related Degradation: Over years of service the internal motor brushes and bearings lose efficiency, leading to slower or failed operation.
Helpful Tips for Diagnosis
Listen for motor noise when activating the central locking; a silent unit may indicate an electrical problem, while grinding or weak movement indicates internal mechanical wear. Use a multimeter to check for voltage at the actuator connector during lock/unlock commands to differentiate between wiring and actuator faults.
Why Choose This Part
Replacing a faulty right rear door lock actuator with a correct OEM-referenced unit restores reliable central locking, improves vehicle security and prevents further damage to the latch mechanism. The listed OEM references make it easy to find the correct replacement and ensure a straightforward fitment.
Additional Notes
Order using the OEM numbers listed above to increase the chance of receiving the correct part quickly. Proper installation by a trained technician or an experienced DIY mechanic is recommended to ensure long-term performance.
