This electric door lock / central locking actuator is a direct-fit replacement designed for the left rear door of Peugeot 407 models. Ideal for professional workshops and experienced DIY mechanics, the unit restores secure locking, reliable remote central locking operation and smooth door latching. Many customers search by part number (e.g. 9659854180), so the actuator is listed with the most common OEM references for quick identification. The robust design integrates with the factory latch assembly and should be matched to the left rear (driver’s side rear) door location when ordering.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Peugeot 407
• Product Codes: 9659854180
• Other Numbers: 9137K8, 9137Q7
• Position: Left Rear Door (Driver’s Side Rear Door)
• Function: Electric central locking actuator / door lock mechanism

Replacement Guide

Basic replacement steps for a competent mechanic or skilled DIYer:

• Safely disconnect the negative battery terminal before starting to avoid short circuits and protect vehicle electronics.
• Remove the inner door trim and any moisture barriers to access the latch and actuator assembly.
• Disconnect the electrical connector and any linkage rods or clips attached to the lock.
• Remove the mounting screws/bolts holding the lock actuator and detach the unit from the latch assembly.
• Install the new actuator in the same orientation, secure fasteners, reconnect linkage and electrical connector.
• Reconnect the battery and test the central locking and manual operation before refitting the door trim. Verify smooth latching and unlock/lock cycles from the key, remote and interior switch.

Installation Recommendations

• Work on a dry, well-lit bench or with the door open and supported to avoid pinched wiring and to keep the moisture barrier intact.
• Use appropriate trim tools to avoid damaging clips; retain all fasteners and replace any brittle clips.
• Check and clean electrical connectors; apply dielectric grease to contacts if needed to prevent corrosion.
• Lubricate latch moving parts with suitable long-life grease to reduce friction and prolong life of the mechanism.
• Always test the complete lock function (remote, key, interior switch and manual latch) before final assembly of the door panel.

Why It Fails Most Often

Common causes of actuator or door lock failure include water ingress and corrosion of internal components, deterioration or breakage of plastic gears and mechanical linkages, electrical connector corrosion or wiring fatigue, and wear from extensive use over many years. Faulty drainage or damage to the door seal can accelerate water-related failures. Mechanical impact from closing the door with obstructions or after an accident can also damage the unit.

Because this part is an active electromechanical component, failures are more frequent in older vehicles or cars exposed to heavy use and harsh environments. Replacing the actuator and correcting any underlying causes (moisture, damaged seals, worn linkages) will improve long-term reliability.

Benefits

• Restores reliable central locking and door security
• Direct fit for left rear door of Peugeot 407 when matching listed part numbers
• Suitable for professional installation and competent DIY replacement

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:

1. Disconnect The Negative Battery Terminal To Avoid Short Circuits.
2. Remove The Inner Door Trim Using Trim Tools And A Suitable Screwdriver Or Socket Set.
3. Peel Back The Moisture Barrier Carefully To Access The Lock Mechanism.
4. Unplug The Electrical Connector And Unfasten The Fixing Screws Or Clips Holding The Actuator.
5. Remove The Old Actuator, Transfer Any Required Linkages Or Clips, And Fit The New Unit.
6. Reconnect The Electrical Connector, Test Central Locking Operation Before Reassembling The Door Trim.
7. 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.

This electric central locking unit is a direct-fit replacement for the left rear door of the Peugeot 407. Designed for workshop technicians and DIY enthusiasts, the actuator operates the door latch as part of the vehicle’s central locking system and restores remote and key locking/unlocking functions. The part is commonly referenced by OE and supplier codes, making it easy to find in catalogues and search engines (e.g. 9681337380, 9137K8, 9137Q7).

Why Choose This Part: It offers an exact fit for the Peugeot 407 door mechanism and replaces worn or non-responsive locking assemblies that cause failures in central locking or prevent the door from latching reliably. Replacing a faulty actuator quickly restores convenience and security and avoids further strain on the central locking system.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Peugeot 407
• Product Codes: 9681337380 M00
• Other Numbers: 9137K8, 9137Q7, 9681337380

Installation Recommendations

Replacement is straightforward for a trained mechanic or competent DIYer with basic tools. Typical steps:

• Remove the door trim panel and protective moisture barrier to access the lock mechanism.
• Disconnect the electrical connector and detach any linkages from the actuator to the latch.
• Remove the retaining screws or bolts securing the actuator and withdraw the unit from the latch assembly.
• Install the new actuator, reconnect linkages and electrical connector, then test central locking function before reassembling the door panel.

Use a suitable screwdriver and Torx bits where required. Inspect the wiring harness and connector for corrosion; apply dielectric grease to electrical contacts if needed. Refit all seals and the moisture barrier to prevent water ingress.

Most Common Failure Reasons

The most frequent causes of failure are mechanical wear of plastic gears or internal components, water ingress and corrosion of electrical contacts, and strained linkages due to misalignment or damaged door fittings. Repeated use over time and exposure to salt or road moisture accelerates wear. Symptoms include intermittent locking, complete loss of lock motor function, or difficulty latching the door.

Notes For Buyers

Searchable product codes such as 9681337380, 9137K8 and 9137Q7 are commonly used when sourcing this part. Fitment is intended for Peugeot 407 left rear door (driver’s side rear). Proper installation and sealing will extend service life and prevent premature failure.

This electric door lock actuator is a direct-fit solution for the left rear (driver’s side rear) door of the Peugeot 407. Designed for workshops and experienced DIY mechanics, the unit restores reliable central locking operation, responding to remote and interior lock/unlock commands. Commonly searched by part numbers 9660699280, 9137K8 and 9137Q7, this actuator is an essential spare for vehicles that exhibit intermittent locking, failure to lock/unlock, or noisy operation from the rear door.

Technical Information

Manufacturer: Stellantis (Citroën / Peugeot)

Model: Peugeot 407

Product Codes: 9660699280, 9137K8, 9137Q7

Other Numbers: E 00 (as referenced in supplier listings)

Function And Fitment

The actuator operates the central locking mechanism in the left rear door, converting electrical signals from the vehicle’s central locking system into mechanical movement that locks or unlocks the door latch. It is intended for fitment to the left rear door of Peugeot 407 models. The unit connects to the vehicle wiring harness via a multi-pin connector and mounts directly to the door lock assembly.

How The Part Is Replaced

• Remove the interior door trim panel and any trim clips carefully to avoid damage.
• Peel back the water/sound insulation membrane to access the lock assembly.
• Disconnect the actuator electrical connector and any linkages connected to the latch.
• Unscrew the mounting bolts securing the actuator to the door latch and remove the faulty unit.
• Install the replacement actuator, reconnect linkages and electrical connector, and test locking/unlocking before reassembling the door trim.
• Reattach the insulation and trim panel, ensuring all clips and screws are secure.

Typical workshop time for replacement: approximately 30–60 minutes depending on experience and vehicle equipment.

Installation Recommendations

• Work on a cool, dry car and disconnect the battery if you will be handling exposed connectors for an extended time.
• Inspect harness connectors for corrosion or broken pins; clean and apply dielectric grease to prevent future corrosion.
• Check the door latch mechanism and linkages for wear or bent rods; replace or adjust as needed for smooth operation.
• Test the actuator operation with the door open before refitting the trim to confirm proper function.

Why This Part Commonly Fails

Actuators most often fail due to water ingress and corrosion, worn electric motor brushes, or broken plastic gears inside the mechanism. Frequent use, exposure to moisture over time and mechanical strain from misaligned latch components accelerate wear. Symptoms include intermittent locking, slow or noisy operation, or complete loss of locking function on the affected door.

Additional Notes For Buyers

When searching or ordering, customers often use the OEM numbers 9660699280, 9137K8 or 9137Q7—include these codes in your search to find the correct part. Suitable for Peugeot 407 left rear door replacement; verify physical match against the existing actuator during installation (mounting points and connector type).