Description
Electric lock for the left front door for PEUGEOT 407 Driver’s door.
This electric door lock is a direct-fit replacement for the left front (driver’s) door of the Peugeot 407. Designed for mechanics and experienced DIYers, the unit restores reliable central locking operation, secures the door latch and ensures proper interaction with door handles and locking rods. The part is commonly searched under the OE numbers 9686683680, 9135AY and 9135FN — include these in your search to find the correct item quickly. Compatible with standard Peugeot 407 body styles, the actuator and latch assembly address common failure modes such as worn gears, water ingress and electrical faults.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 407
- Product Codes: 9686683680, 9135AY, 9135FN
- Other Numbers: 9135AY | 9135FN | 9686683680
Compatibility
Suitable For: Peugeot 407 (Sedan, Station Wagon, Coupé) produced in model years commonly between 2004 and 2011. Verify fitment by matching the part numbers listed above with the vehicle’s existing lock unit before ordering.
Function And Symptoms
The lock assembly performs two key roles: it secures the door mechanically when locked and provides the electric actuation needed for central locking and remote operation. Typical symptoms of a failing unit include intermittent locking/unlocking, inability to lock or unlock from the remote or interior switch, unusual noises from inside the door (grinding or buzzing), and doors that remain stuck closed or ajar.
Installation Recommendations
- Safety First: Disconnect the negative terminal of the battery before beginning work to avoid short circuits or accidental airbag deployment when removing door trim near the side airbag area.
- Remove Door Trim: Carefully remove the interior door panel and vapor barrier to access the lock assembly. Keep track of clips and fasteners to avoid rattles on reassembly.
- Disconnect Electrical Connector: Unplug the lock actuator electrical connector and any linked door handle/central locking rods or cables.
- Unbolt And Replace: Remove the mounting bolts securing the lock unit, extract the old assembly and install the new lock in the reverse order. Ensure rods and clips are correctly seated and that the actuator linkage moves smoothly.
- Test Before Reassembly: Reconnect the battery and test locking/unlocking functions (central locking, key fob and interior switch) before refitting the door trim. Adjust linkage if necessary.
- Lubrication: Apply appropriate lock lubricant to latch surfaces to reduce wear and noise after installation.
Most Common Failure Reasons
- Water Ingress And Corrosion: Moisture entering the door can corrode mechanical parts or short the actuator motor.
- Wear And Tear: Plastic gears and small mechanical components inside the actuator wear down after many cycles, especially on high-mileage vehicles.
- Electrical Faults: Damaged wiring, connector corrosion or a failed actuator motor can interrupt power to the lock.
- Mechanical Damage: Broken rods, clips or distorted latch components after impact or forced entry attempts.
Typical Longevity: Failures are most common on older Peugeot 407 vehicles or those exposed to harsh environments (road salt, moisture). Many units remain reliable for several years, but heavy use and exposure can accelerate wear.
Buy with Confidence: If your vehicle shows the symptoms listed above and the part numbers match (9686683680 / 9135AY / 9135FN), this electric lock for the left front door is the correct replacement to restore reliable locking function and door security. Fitment by experienced mechanics or skilled DIYers is straightforward when following the installation recommendations.
