Description
Electric lock for the right rear door for Citroën C8 and Peugeot 807. Rear door on the passenger side.
This electric door lock actuator is designed as a direct-fit replacement for the right rear (passenger-side rear) door of Citroën C8 and Peugeot 807 models. It operates the latch and integrates with the vehicle’s central locking system to lock and unlock the door reliably. Ideal for professional workshops and DIY mechanics who need a straightforward, OE-compatible unit often searched under the product code 9138A6. The unit restores proper central locking function, improves vehicle security and convenience, and helps eliminate intermittent door lock faults.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C8, Peugeot 807
- Product Codes: 9138A6
- Other Numbers: —
Function And Diagnostics
The actuator converts electrical signals from the central locking system into mechanical movement to operate the door latch. Common symptoms of a faulty actuator include: no response from the lock on remote/central command, intermittent locking/unlocking, grinding or motor noise inside the door, or the door not latching securely. For fast diagnosis, listen for motor noise when sending a lock/unlock command and check for power at the connector with the door wiring harness connected.
Installation Recommendations
- Always disconnect the vehicle battery before starting to avoid short circuits and to protect vehicle electronics.
- Remove the interior door trim carefully using trim tools to avoid damage to clips and panels.
- Disconnect the electrical connector and unhook any rods or cables from the old lock mechanism; note the position of linkages for correct reassembly.
- Transfer any required mechanical parts (rods, clips) from the old unit if not supplied with the new lock, fit the new actuator, and reconnect linkages and connector.
- Test the locking and unlocking function, as well as manual operation, before refitting the door trim. Check the central locking operation from all doors and remote control.
- Recommended tools: trim removal tools, Torx/Phillips screwdrivers, socket set, multimeter for electrical checks.
- After installation, ensure smooth movement and lubricate latch pivot points with an appropriate lubricant if necessary.
Why This Part Fails Most Often
- Mechanical Wear: Plastic gears and small motors inside the actuator wear over time and eventually fail.
- Water Ingress and Corrosion: Moisture entering the door can corrode electrical contacts or seize mechanical parts.
- Broken Linkages: Stress or impact can bend or break rods and clips that connect the actuator to the latch.
- Electrical Issues: Connector corrosion, damaged wiring, or intermittent supply can prevent the actuator from receiving proper signals.
Note: This part is frequently searched by the product code 9138A6. Test the new lock’s function before reassembly to ensure a successful repair and to avoid repeat removal of the door trim.
