Description
Electric central locking lock for the left front door for Citroën C4 5‑door first series
Driver’s door
Replace the faulty left front door lock with this used electric central locking unit designed for Citroën C4 five‑door models (first series). The unit operates the door latch and integrates with the vehicle’s central locking system to ensure secure closing and reliable locking/unlocking from the remote and interior controls. Ideal for professional mechanics and DIY enthusiasts searching by part number (e.g. 9683416080, 9135FA), this replacement restores proper door function and eliminates issues like intermittent locking, door not latching or refusal to unlock.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (First Series) 5‑Door, Left Front (Driver’s) Door
- Product Codes: 9683416080, 9135FA
- Other Numbers: 9681337180, 9660699880 F03, 9647172780 F03, 9135Z5, 9135R0
Installation Recommendation
- Preparation: Disconnect the battery before starting to avoid short circuits and to protect vehicle electronics.
- Removal: Remove the inner door trim and moisture barrier to access the lock assembly. Carefully detach the electrical connector, lock rods and linkage, and unbolt the lock unit from the door shell.
- Fitment: Install the replacement unit in reverse order. Check and, if required, lubricate moving parts and ensure the latch and striker alignment are correct before reassembling the door trim.
- Electrical Check: Verify connector pins are clean and corrosion‑free. After installation, cycle the lock with the remote and interior switch to confirm correct operation.
- Recommendation: Fitment is recommended to be performed by a trained technician if you are not experienced with door disassembly—proper alignment and secure connections are essential for reliable function.
Common Failure Causes
- Mechanical Wear: Internal plastic gears or latch components wear over time and can strip or seize.
- Water Ingress And Corrosion: Moisture entering the door cavity can corrode metal parts and weaken electrical contacts.
- Electrical Faults: Connector corrosion, damaged wiring or a failed actuator motor will prevent locking/unlocking.
- Linkage Damage: Bent or disconnected rods and clips can stop the latch from operating correctly.
- Impact Damage: Door impacts or misalignment from accidents can damage the lock mechanism.
This part is frequently searched by reference numbers—use the product codes listed above when looking for compatibility. Installing a correct, well‑fitting lock restores door security and central locking reliability, reducing noise, rattle and malfunction associated with a failing latch.
