Description
Electric lock for the right rear door for Peugeot 407. Rear door on the passenger side.
This Replacement Electric Door Lock is designed specifically for the right rear (passenger-side) door of the Peugeot 407. The unit combines the latch mechanism and electric actuator to operate central locking, door locking/unlocking and the door-open signal. Ideal for professional workshops and DIY mechanics, this part restores reliable locking operation, eliminates intermittent central-lock failures and removes loud or sluggish locking action caused by worn actuators. Common search terms: Peugeot 407 right rear door lock, electric door lock 9686691880, 9138V0, 9138N7, rear passenger door latch.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 407
- Product Codes: 9686691880, 9138V0, 9138N7
- Other Numbers: Alternate References: 9138N7 / 9138V0 (as used in replacement listings)
Function And Design
The lock unit houses the latch assembly and an electric actuator that receives signals from the central locking system. It secures the door mechanically and provides an electrical contact for the vehicle’s door-open sensor and central locking motor. A properly functioning lock ensures solid closure, quiet and fast locking cycles and correct status reporting to the car’s body control module.
Common Faults And Causes
- Actuator Motor Wear: Repeated use can wear brushes or gears, causing slow or failed locking.
- Plastic Gear And Mechanism Breakage: Internal plastic components can crack, preventing the latch from engaging.
- Corrosion And Water Ingress: Moisture entering the door can corrode contacts or seize mechanical parts.
- Electrical Connector Problems: Oxidised or loose connectors lead to intermittent operation.
- Mechanical Misalignment: Door alignment issues can increase stress on the latch and accelerate wear.
Replacement Guide
Recommended Tools: Torx/Screwdriver set, trim removal tools, pliers, socket set, dielectric grease. Basic steps for a typical replacement:
- Disconnect The Negative Battery Terminal To Prevent Short Circuits.
- Remove The Interior Door Trim Panel Carefully Using Trim Tools To Avoid Breaking Clips.
- Peel Back The Vapour/Water Barrier To Access The Lock Assembly.
- Disconnect Electrical Connector And Unlink Mechanical Rods/Hookups From The Lock.
- Remove Fixing Screws/Bolts Holding The Lock Unit And Slide The Old Unit Out.
- Install The New Lock Unit, Reattach Rods And Electrical Connector, Then Refit Screws To Secure The Assembly.
- Test Locking/Unlocking Function Before Reassembling The Door Trim; Reconnect Battery And Verify Central Lock, Manual Lock, And Door-Open Switch Operation.
Installation Recommendations
- Use Dielectric Grease On Electrical Connectors To Prevent Corrosion.
- Lubricate Mechanical Latch Points With A Light, Dry-Type Grease To Reduce Wear.
- Check Door Alignment And Adjust Hinges If The Door Is Difficult To Close—Misalignment Shortens Lock Life.
- Ensure All Rods And Clips Are Correctly Reconnected And That The Door Card Clips Are Reinstalled Securely.
- After Fitment, Cycle The Central Lock Several Times And Confirm The Interior Lock/Unlock Switches Operate Correctly.
Why This Part Fails Most Often
Failure Typically Results From Long-Term Use Combined With Exposure To Moisture And Dirt. The Electric Actuator And Small Plastic Gears Are Subject To Wear, While Corrosion Or Water Penetration Can Damage Electrical Contacts and seize mechanical parts. Vehicles With High Mileage, Frequent Use Of Central Locking, Or Poor Door Seals Are More Prone To Early Failure.
Notes For Buyers
Search By The OE References Above (9686691880 / 9138V0 / 9138N7) For Fast Identification. Suitable For Peugeot 407 Right Rear Passenger-Side Doors Using These Part Numbers. Follow The Recommended Safety Steps When Replacing The Unit, Especially Battery Disconnection And Proper Reassembly Of Clips And Seals.
