Description
Electric central locking actuator for the left front door for Citroën C4 5-door first series. Driver’s door.
Product Overview
This electric door lock/central locking actuator is designed for the left front (driver’s) door of the Citroën C4 5‑door first series. It operates the central locking mechanism and the mechanical latch inside the door, allowing remote or central locking commands to lock and unlock the driver’s door. The unit is commonly referenced by multiple OEM numbers, so customers often find it by part number search.
Key Benefits
- Direct replacement for the OEM central locking mechanism on the left front door.
- Restores reliable locking/unlocking and door latching function.
- Saves time for workshops and DIY mechanics by matching common part numbers used across Stellantis models.
How It Works
The actuator converts electrical signals from the central locking system into mechanical movement. It moves internal rods and levers that engage or release the door latch. Failure of the actuator typically results in the door not locking/unlocking with the remote, difficulty opening or closing the door, or intermittent operation.
Installation Procedure (Summary)
- Recommended Tools: Trim removal tools, Torx/Screwdriver set, pliers, ratchet with sockets.
- Preparation: Park vehicle on level ground and ensure ignition is off. It is good practice to disconnect the negative battery terminal before working on door electrics to avoid short circuits or accidental activation of systems.
- Door Trim Removal: Remove armrest screws and door card retaining clips, carefully lift off the door panel. Peel back the moisture/vapor barrier to access the lock mechanism.
- Disconnect: Unplug the electrical connector from the actuator and detach any linkage rods/clips connecting the actuator to the latch and door handle.
- Remove Old Unit: Unscrew the retaining bolts and remove the actuator from the door shell. Note the routing and orientation of linkages for correct reassembly.
- Fit New Unit: Install the replacement actuator, reconnect linkage rods and electrical connector. Refit moisture barrier and test the locking function before reassembling the door card.
- Testing: Verify central locking operation with remote and manual handle, check that the door latches and releases smoothly, and confirm no error messages on instrument cluster.
Most Common Failure Reasons
- Wear Of Internal Gears Or Motor: Repeated use and age can wear plastic gears or the small electric motor inside the actuator.
- Water Ingress And Corrosion: Moisture entering the door cavity can corrode internal components and electrical connectors, causing intermittent or permanent failure.
- Broken Linkage Or Clips: Mechanical rods and plastic clips that connect the actuator to the latch can fatigue or break, preventing proper operation.
- Electrical Connector Issues: Bent pins, loose connector or wiring damage can interrupt power or signal to the actuator.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (1st Series) 5‑Door – Left Front (Driver’s Door)
- Product Codes: 9681337180, 9660699880, 9647172780, 9683416080, 9135Z5, 9135FA, 9135R0
- Additional Numbers: F03 (reference), 9135R0
Compatibility Notes
This unit is intended for the left front driver’s door of Citroën C4 5‑door first series models. It is identified by several OEM numbers commonly used for parts lookup; verify the physical appearance and connector arrangement when replacing to ensure fitment.
Recommendations For Fitment
- Always compare the new part with the removed unit to confirm matching mounting points, linkages and connector type.
- Before final reassembly, test the locking/unlocking cycles and latch engagement to ensure correct installation.
- Lubricate latch contact points with an appropriate grease to reduce wear and prevent future binding.
- If the actuator failed due to water ingress, inspect door seals and drainage channels and repair as needed to prevent recurrence.
Who Should Install
Suitable for experienced DIY mechanics and professional workshops. If unsure about door trim removal or electrical connections, seek assistance from a professional technician.
