Description
Electric central locking door lock for the left front door for Citroën C4 5-door first generation. Driver’s door.
Restore reliable central locking and door security with this electric left front door lock designed for the Citroën C4 (5-door, first generation). Ideal for professional workshops and DIY mechanics, this direct-fit replacement addresses common failures of the driver-side locking mechanism and returns smooth locking/unlocking and key operation. The unit is compatible with multiple OEM reference numbers often used in search queries, making it easy to find by part code. Installation is straightforward for a trained technician and typically resolves issues such as intermittent locking, inability to lock/unlock from the remote, or a stuck door latch.
Benefits
– Direct replacement for driver-side central locking; restores factory functionality.
– Compatible with common OEM codes to simplify part lookup and ordering.
– Designed to integrate with existing door linkages and electrical connector harnesses.
– Useful for garages and experienced DIYers performing door lock repairs or restorations.
How It Works
The unit houses the actuator motor and latch mechanism that operate the central locking for the left front door. When the car’s central locking signal is received (remote or door switch), the actuator moves internal linkages to lock or unlock the latch. Failures usually originate from worn actuator motors, broken plastic gears, corroded contacts, water ingress or mechanical wear inside the latch assembly.
How To Replace
Replacement typically requires standard tools and about 30–90 minutes depending on experience. Basic steps:
- Park vehicle on level surface and ensure ignition is off.
- Remove interior door trim panel (careful with clips and door handle cables).
- Peel back the vapor/moisture barrier to access the lock assembly.
- Disconnect electrical connector and unclip/unscrew linkage rods from the lock.
- Remove the fixing screws/bolts securing the lock to the door and extract the old unit.
- Install the new lock, reconnect linkages and electrical connector, test operation before reassembling the door panel.
- Reinstall vapor barrier and door trim panel, verify central locking and key operation.
Installation Recommendations
– Work In A Clean, Dry Environment To Avoid Introducing Debris Or Moisture Into The Door Cavity.
– Use The Correct Trim Tools To Avoid Damaging Clips And Interior Panels.
– Verify All Linkages Are Correctly Seated And Not Bent; Incorrect Rod Position Can Prevent Proper Latching.
– Test Lock Operation With The Door Open Before Final Reassembly To Confirm Functionality.
– If Electrical Faults Persist, Check Wiring Harness, Connector Pins And Fuse/Central Locking Relay.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (First Generation, 5-Door)
- Product Codes: 9686719880, 9135FA
- Other Numbers: 9681337180, 9660699880 F03, 9647172780 F03, 9683416080, 9135Z5, 9135R0
Most Common Failure Reasons
– Worn Actuator Motor Or Internal Gears: Plastic gears and small motors can degrade over time, causing intermittent or complete failure.
– Corrosion Or Water Ingress: Moisture entering the door can corrode contacts or jam mechanical parts.
– Mechanical Wear Or Damage: Repeated use or impact can bend linkages or damage the latch mechanism.
– Electrical Connector Issues: Loose or corroded pins can interrupt power to the actuator, leading to unreliable operation.
Compatibility And Search Tips
Customers often search by OEM numbers; include the product codes listed above when searching to find the correct replacement. This lock is intended for driver-side (left front) doors of the Citroën C4 5-door first-generation models and matches the listed OEM references.
Note For Technicians
Inspect door alignment and striker condition when replacing the lock—misaligned doors or a worn striker can mimic lock failure and lead to repeated replacements if not addressed.
