Description
Electric central locking actuator for the left rear door for Peugeot 407 (door behind the driver).
This replacement electric door lock/central locking actuator is designed for the left rear door of Peugeot 407 models. It operates the central locking mechanism, allowing remote and central locking systems to lock and unlock the rear left door. The unit is compatible with common Peugeot part numbers and is suitable for both professional garages and competent DIY mechanics performing door module replacements.
Key Benefits: Improved Reliability, Direct Fit For Many 407 Variants, Retains Factory Locking Functionality. Typical Search Terms: Peugeot 407 Left Rear Door Lock Actuator, Central Locking Actuator 9686691980, 9137Q7, 9137K8.
Technical Information
- Manufacturer: Stellantis / Peugeot / Citroën
- Model: Peugeot 407
- Product Codes: 9686691980, 9137K8, 9137Q7
- Other Numbers: 9137K8 | 9137Q7 | 9686691980
Compatibility
Fits Peugeot 407 variants (Saloon, Estate/SW, Coupe) depending on year and equipment. Verify the part number printed on the existing actuator before ordering to ensure exact match.
Function And Symptoms
The actuator converts electrical signals from the central locking system into mechanical movement to lock and unlock the door latch. Common symptoms of a failing actuator include: intermittent locking/unlocking of the left rear door, audible motor or grinding noises inside the door, door not locking with the remote or central command while other doors operate normally, or a door that stays locked/unlocked.
Why This Part Fails
- Mechanical Wear: Plastic gears and linkages inside the actuator can wear or strip over time.
- Water Ingress And Corrosion: Moisture entering the door can corrode contacts or seize moving parts.
- Motor Or Electrical Failure: Small DC motor or internal switches may fail after years of use.
- Connector Or Wiring Issues: Corroded connectors or damaged wires can interrupt power to the actuator.
Installation Recommendations
Recommended For Experienced DIYers And Professional Technicians. Basic Procedure:
- Disconnect The Negative Battery Terminal To Avoid Short Circuits.
- Remove The Inner Door Trim Using Trim Tools And A Suitable Screwdriver Or Socket Set.
- Peel Back The Moisture Barrier Carefully To Access The Lock Mechanism.
- Unplug The Electrical Connector And Unfasten The Fixing Screws Or Clips Holding The Actuator.
- Remove The Old Actuator, Transfer Any Required Linkages Or Clips, And Fit The New Unit.
- Reconnect The Electrical Connector, Test Central Locking Operation Before Reassembling The Door Trim.
- Reinstall The Moisture Barrier And Door Trim Securely.
Tools Typically Required: Trim Removal Tool, Screwdriver Set, Socket Set, Pliers. Take Care With Plastic Clips To Avoid Breakage. After Installation, Cycle The Lock Several Times And Check All Door Functions.
Additional Advice
Inspect The Door For Signs Of Water Entry Or Rust During Replacement And Clean/Lubricate Moving Linkages. If The Connector Pins Are Corroded, Clean Or Replace The Connector To Prevent Premature Failure. When Replacing The Actuator, Confirm The Part Number Matches (9686691980 / 9137K8 / 9137Q7) To Ensure Correct Fit And Function.
