Description
Electric central locking lock for the left front door for Citroën C4 5-door first series. Driver’s door.
Product Overview
This replacement electric door lock is designed for the left front (driver) door of Citroën C4 5‑door (first generation). It restores central locking and mechanical latching functions, delivering reliable closing and secure locking after wear or damage to the original unit. The part is supplied with the standard electrical connector and mechanical latch assembly ready for direct replacement in compatible vehicles.
Who Is This For
Engineers, professional mechanics and competent DIY enthusiasts who perform door-trim removal and basic door-mechanism repairs. The unit is ideal when the door no longer locks or unlocks electrically, when the latch is stiff, or when the internal actuator has failed.
Key Features & Benefits
- Direct fit for left front driver door of Citroën C4 (First Generation) 5‑door.
- Restores Central Locking Functionality And Secure Latching.
- Complete With Electrical Connector And Mechanical Linkages For Fast Replacement.
- Suitable For Workshop Or Garage Replacement — Saves Time Compared To Full Door Replacement.
How It Works
The unit combines a mechanical latch, an electric actuator and position switches. When the central locking signal is received, the actuator moves internal gears and levers to lock or unlock the latch. Position switches inform the vehicle electronics of the latch status (locked/unlocked), enabling proper central-locking feedback and alarm functions.
Replacement Procedure (Overview)
Typical replacement requires moderate skill and common tools:
- Remove interior door trim and any waterproofing membrane to access the lock assembly.
- Disconnect the electrical connector(s) and unclip or remove the door handle/lock rods from the latch.
- Unbolt the latch from the door shell (usually several Torx or hex fasteners) and extract the old unit.
- Transfer any required linkages or mounting brackets to the new lock if necessary, fit the new unit, reconnect rods and electrical connector, and secure with fasteners.
- Reinstall door trim, test central locking, mechanical latching and key/remote operation. Adjust rod lengths or striker if the latch does not close smoothly.
Installation Recommendations
- Work On A Cool, Dry Day To Reduce Moisture Risk Inside The Door.
- Wear Gloves To Avoid Damaging Plastic Trim And To Keep Components Clean.
- Keep Small Fasteners And Clips Organised; Some Clips Are Single-Use And May Need Replacement.
- Lubricate Moving Parts With A Suitable Graphite Or Silicone-Based Lube After Installation To Reduce Wear And Noise.
- After Fitting, Cycle The Lock Mechanism Several Times With The Door Open To Verify Smooth Operation Before Final Reassembly.
Most Common Reasons For Failure
- Wear Of Plastic Gears Or Internal Mechanisms Causing Slippage Or Failure To Move.
- Water Ingress And Corrosion Of Mechanical Parts Or Electrical Contacts Inside The Door.
- Broken Or Disconnected Control Rods And Linkages Resulting In Loss Of Mechanical Actuation.
- Sticking Due To Dirt, Lack Of Lubrication Or Misalignment Of The Striker.
- Electrical Faults Such As Failed Actuator Motor Or Poor Connector Contacts.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C4 (First Generation) 5‑Door — Left Front (Driver) Door
- Product Codes: 9647172780, 9135FA, 9135R0
- Additional Numbers: 9681337180, 9660699880, F03, 9683416080, 9135Z5
Notes For Professionals
Confirm mechanical linkages and electrical connectors match the vehicle during installation. If the vehicle exhibits central locking faults after fitting, check door switch feedback and actuator wiring for continuity and proper grounding. Adjust rod lengths and striker alignment if the door does not latch smoothly.
Why Buy This Part
Replacing a faulty door lock with a correct, compatible lock restores security and convenience while avoiding the higher cost of replacing door modules or the entire door assembly. For workshops and independent mechanics this part provides a practical, cost-effective repair option.
Compatibility Reminder
The part is intended for Citroën C4 first generation 5‑door left front applications and cross-references the listed numbers above. Always verify that the part numbers match the vehicle’s requirements before installation.
