Description
Electric lock for the right rear door for CITROEN C8 and PEUGEOT 807. Door located behind the front passenger.
Overview
This electric lock is designed to restore reliable locking and central-locking function on the right rear (passenger-side rear) door of Citroën C8 and Peugeot 807 models. Commonly searched under the code 9138A6, the unit is suitable for professional workshops and competent DIY mechanics who perform door lock replacements and central locking repairs. The lock replaces a faulty latch/actuator assembly, improving door security and passenger convenience.
Key Benefits
- Direct fit for Citroën C8 and Peugeot 807 right rear door (passenger side rear).
- Restores central locking and manual locking operation.
- Simplifies replacement procedure with standard fasteners and electrical connector.
- Frequently referenced by product code 9138A6 for quick identification.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C8; Peugeot 807
- Product Codes: 9138A6
- Additional Numbers: Not Available
- Position: Right Rear Door (Passenger Side Rear)
Fitment And Replacement
Replacement requires removal of the inner door trim and access to the lock module. Typical steps:
- Disconnect the vehicle battery before starting to prevent short circuits and unintended airbag deployment.
- Remove the door trim panel and any trim clips, then peel back the moisture barrier carefully.
- Locate and unplug the electrical connector from the lock actuator.
- Remove the fixing screws/bolts securing the lock mechanism and detach any linkage rods or cables.
- Install the new lock in reverse order, reconnecting linkages and the electrical connector, then test locking/unlocking before reassembling the door trim.
Depending on experience and tools available, replacement typically takes around 30–60 minutes.
Installation Recommendations
- Always Disconnect The Battery Before Any Electrical Work.
- Inspect Wiring And Connectors For Corrosion Or Damage; Clean Contacts And Apply Dielectric Grease If Needed.
- Check Linkage Clips And Rods For Wear Or Bending; Replace Damaged Components To Ensure Smooth Operation.
- After Installation, Cycle The Lock Several Times And Verify Central Locking, Child Lock And Door Ajar Switch Functions.
- Use Appropriate Tools (Torx/Screwdrivers) And Avoid Damaging Door Trim Clips During Removal.
Why This Part Fails Most Often
- Wear Of Mechanical Components: Repeated use leads to worn latches, seized pawls or weakened springs.
- Moisture Ingress And Corrosion: Water penetration can corrode mechanical parts and electrical contacts, causing intermittent or permanent failure.
- Broken Actuator Motor Or Gear Damage: Internal motor or plastic gear failure prevents locking movement.
- Damaged Linkage Or Rods: Bent or disconnected linkages stop the actuator from moving the latch correctly.
- Electrical Issues: Frayed wiring, poor grounding or connector corrosion can interrupt power to the actuator.
Notes For Professionals And DIYers
This part is intended for experienced technicians and skilled DIY enthusiasts comfortable with door disassembly and electrical connectors. When replacing the lock, verify related components (striker, door alignment, central locking fuses) to avoid repeat failures. Proper lubrication of moving parts and protection of electrical contacts significantly extends service life.







