High-quality electric door lock designed for the right rear (passenger-side) door of Citroën C4 5‑door models. Ideal for professional workshops and experienced DIY enthusiasts, this central locking latch restores reliable locking and unlocking, eliminates rattles and prevents water ingress into the locking mechanism. Commonly searched under OE and aftermarket codes 9686733580, 9681336880, 9660700280, 9647175080 and internal references 9138F2 / 9138N4 / 9138T5.

Features & Benefits

• Direct Replacement: Designed to match the original geometry and mounting points for a straightforward swap.
• Electric Actuation: Compatible with electric central locking systems used on Citroën C4 5‑door models.
• Durable Construction: Robust components to resist everyday wear from repeated locking cycles.
• Improved Convenience: Restores remote and interior switch operation for the affected door.
• Cost Effective Repair: Replace only the faulty latch instead of entire door mechanisms.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model(s): Citroën C4 (5‑door) – Right Rear Door (Passenger Side)
• Product Codes: 9686733580; 9681336880; 9660700280; 9647175080
• Additional Numbers: 9138F2; 9138N4; 9138T5; 9138T5 (catalog references and internal codes)

Installation Recommendations

• Disconnect the negative battery terminal before starting work to avoid short circuits and accidental actuator activation.
• Remove the inner door trim and protective moisture barrier to access the latch assembly and linkages.
• Carefully disconnect the electrical connector and release the linkage rods or clips – note their positions for reassembly.
• Unbolt or unfasten the latch unit from the door shell and withdraw it for replacement.
• Fit the new latch, reconnect linkages and electrical connector, then test locking/unlocking (remote and interior switches) before refitting the door trim.
• Use manufacturer‑recommended fasteners and ensure drainage channels and seals are intact to prevent future moisture damage.

Why This Part Fails Most Often

• Plastic Wear And Breakage: Internal plastic pawls or gears can fatigue and break after many cycles.
• Moisture Ingress And Corrosion: Water entering the door cavity can corrode metal parts or short the actuator motor.
• Actuator Motor Failure: The electric motor or gearbox inside the latch can seize or lose torque.
• Linkage And Clip Damage: Rods or retaining clips may bend or detach, causing the latch to stop operating correctly.
• Lack Of Lubrication: Dry mechanisms increase friction and accelerate wear.

Maintenance Tips

• Inspect and keep door drainage holes clear to reduce moisture accumulation inside the door.
• Lubricate moving parts with appropriate door-safe grease during service intervals.
• Check linkage clips and cables for wear when diagnosing central locking faults.

This electric right rear door lock is a practical, direct-fit option to bring your Citroën C4 back to reliable operation. Replace the faulty latch to restore full central locking functionality and eliminate door noise or security issues.

This electric door lock is a direct-fit replacement for the right rear (passenger-side) door of Citroën C4 five-door vehicles. It restores reliable central locking operation by driving the latch mechanism via an internal motor and geartrain and connects directly to the vehicle wiring harness. Commonly searched under part numbers 9647175080, 9681336880 and 9660700280 and reference codes 9138F2, 9138T5, 9138N4, this unit is suitable for professional workshops and competent DIY enthusiasts looking for a straightforward repair of rear-door locking faults.

Function and Benefits: The actuator converts electrical pulses from the central locking system or remote key fob into mechanical movement to engage and release the door latch. Replacing a faulty actuator restores door locking/unlocking, prevents water ingress into the door electronics, and removes intermittent locking behaviour. Designed for plug-and-play installation with the factory latch assembly, it reduces workshop time compared with complex electrical troubleshooting when the root cause is a failed actuator.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model: Citroën C4 (5-door) – Right Rear Door (Passenger Side)
• Product Codes: 9647175080
• Other Numbers: 9681336880, 9660700280; Reference Codes: 9138F2, 9138T5, 9138N4

Installation Recommendations

• Safety First: Before beginning any work on electrical components, disconnect the negative battery terminal to avoid short circuits and accidental actuator activation.
• Door Removal: Remove the interior door trim carefully to access the lock assembly—start by removing screws, trim clips and the door handle bezel. Keep fasteners organized.
• Disconnecting the Unit: Unplug the electrical connector from the actuator and detach linkage rods from the actuator lever. Note or photograph linkage orientation for reassembly.
• Replacing the Actuator: Remove the mounting screws or rivets securing the actuator to the latch, fit the new unit, reconnect linkages and the electrical plug, then test the central locking operation before reinstalling the door trim.
• Final Checks: Verify smooth movement of the latch and secure fitment. Check for water ingress points and reseal or replace the door vapor barrier if necessary.

Common Failure Causes

• Water Ingress: Moisture entering the door can corrode electrical contacts or damage the motor and internal gears.
• Worn Plastic Gears: Repeated use causes plastic gear teeth to wear or shear, preventing the actuator from moving the latch.
• Motor Burnout: The small DC motor inside the actuator can fail after many cycles or under electrical stress.
• Broken Linkage Or Clips: Mechanical linkages and plastic clips that connect the actuator to the latch can fracture, resulting in a non-functioning lock.
• Connector Corrosion Or Wiring Faults: Corroded pins or intermittent wiring can interrupt power or signal to the actuator; inspect connectors during replacement.

Suitable For: Professional garages and competent DIYers working on Citroën C4 five-door models who require a reliable replacement for a malfunctioning right rear door lock actuator. Because many customers search by part number, check the item codes listed above when ordering to ensure correct fitment.

High-quality Replacement Lock Actuator Designed For Professional Workshops And Skilled DIYers. This electric central locking lock (right rear door, passenger side) restores reliable locking and unlocking via the vehicle’s central locking system. Ideal For Citroën C4 5‑door applications where OE numbers such as 9660700280, 9681336880 or 9647175080 are referenced. Commonly Searched By Part Numbers: 9138F2, 9138T5, 9138N4.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C4 (5‑door) — Right Rear Door (Passenger Side)
• Product Codes: 9660700280, 9681336880, 9647175080
• Additional Numbers: 9138F2, 9138T5, 9138N4

Function And Symptoms

The actuator operates the door latch mechanism as part of the central locking system, converting electrical pulses into mechanical motion to lock and unlock the door. Typical failure symptoms include: door not locking/unlocking with remote or central lock button, intermittent operation, noisy or sluggish actuation, or the door remaining mechanically locked or stuck. Electrical issues can cause the actuator motor to run without moving the latch if internal gears are damaged.

How To Replace

• Prepare Tools: Trim removal tools, Torx/Phillips screwdrivers, socket set, and a multimeter for quick checks.
• Safety First: Disconnect The Battery Before Starting Work To Avoid Short Circuits And To Protect Body Electronics.
• Remove Interior Door Trim: Carefully detach trim clips and remove the door card to access the inner door panel. Peel back the moisture barrier as required.
• Disconnect Wiring: Unplug The Electrical Connector From The Lock Actuator. Inspect Connector For Corrosion Or Bent Pins.
• Unbolt The Actuator: Remove Fixing Screws/Clips Holding The Lock Mechanism. Note The Orientation Of Linkages And Rods For Correct Reassembly.
• Fit New Unit: Position The Replacement Actuator, Reconnect Linkages And Electrical Connector, Then Test Operation Before Reassembling The Door Trim.
• Final Check: Verify Smooth Locking/Unlocking From Remote, Door Switches, And Manual Operation. Refit Trim And Reconnect The Battery.

Installation Recommendations

Install Using Proper Trim Tools To Avoid Broken Clips. Test The Actuator Function Before Fully Reassembling The Door Panel To Save Time If Further Adjustment Is Needed. If Electrical Faults Are Suspected, Check For Power And Ground At The Connector With A Multimeter; Inspect Wiring Harness For Pin Damage Or Corrosion. For Workshops, A Short Functional Test With The Door Open Prevents Rework.

Most Common Failure Reasons

The most frequent causes of actuator failure are moisture ingress and corrosion, worn internal gears or motor brushes, mechanical damage to plastic components, and connector or wiring faults. Water penetration from damaged seals or rusted drainage holes accelerates deterioration. Repeated heavy use over many years can also lead to gradual wear of the gearbox and motor.

Suitable For Mechanics And Experienced DIYers Looking For Direct Replacement Parts Identified By OE Numbers. Using The Correct Part Number (e.g., 9660700280, 9681336880, 9647175080, 9138F2) Ensures Best Fit And Function.