Description
Electric central locking actuator for the left rear door of Citroën C4 5‑door models. Rear door on the driver’s side.
This electric door lock actuator is a direct-fit replacement for the left rear (driver’s side rear) central locking of Citroën C4 five‑door models. Ideal for professional mechanics and experienced DIYers, the unit restores reliable locking and unlocking via the central locking system. The part is commonly searched by product codes, so you can quickly find it by reference numbers such as 9660700380, 9137E0, 9137K5 or 9137Q2.
How It Works
The actuator converts electrical pulses from the central locking system into mechanical movement that operates the door latch. When a lock/unlock signal is received, a small electric motor and gear train move the locking rod or lever to secure or release the door. Proper function depends on intact electrical connections, undamaged linkages and dry, corrosion‑free internals.
Replacement Procedure (Overview)
Replacement is straightforward for a trained technician: remove the inner door trim using trim tools, unplug the electrical connector, disconnect the locking rods/linkages and unbolt the actuator from the door latch assembly. Install the new unit by reversing the steps, reconnecting rods and electrical connector, then test locking/unlocking before reassembling the door panel. Always work methodically so linkages are refitted in the correct positions and avoid forcing plastic clips.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (5‑door) — Left Rear Door
- Product Codes: 9660700380, 9137E0
- Other Numbers: 9137K5, 9137Q2
Installation Recommendations
- Use appropriate trim removal tools, Torx and socket set to avoid damaging door panels and fasteners.
- Before disconnecting connectors, note the position of all linkages and clips (photos help during reassembly).
- After fitting, test electrical operation of the actuator with the battery connected before reinstalling the door trim.
- Apply a suitable light grease to the latch pivot points and linkage contacts; avoid getting lubricant into electrical connectors.
- If the connector contacts show corrosion, clean them and ensure a tight, moisture‑free connection.
Most Common Failure Reasons
- Wear of plastic gears or internal components due to long service life and repeated cycling.
- Water ingress and corrosion inside the actuator or connector area, especially after damaged door seals.
- Mechanical damage to linkages or clips from forced operation or impact.
- Electrical faults such as motor burnout or intermittent connector contact.
This actuator is a practical replacement part for restoring reliable central locking on the left rear door of Citroën C4 five‑door vehicles. Search by the listed product codes for fast identification and fitment confirmation.
