Description
Left Front Door Lock For Peugeot 407. Driver’s Door.
This replacement left front door lock is designed for Peugeot 407 vehicles and fits the driver side door. It restores reliable locking and central locking functionality, helping to eliminate problems such as door not latching, intermittent locking, or difficulty opening from the outside. The part is suitable for professional workshops and experienced DIY enthusiasts who perform body and electrical repairs. Common search terms include Peugeot 407 door lock, left front door lock, driver side door lock, and OEM 9659739880.
The unit controls both mechanical latching and interface to the vehicle’s central locking system. Typical symptoms that indicate the lock needs replacement are grinding or sticking when closing the door, failure of the central locking to lock/unlock the driver door while other doors operate normally, or visible wear and corrosion on the latch mechanism. Wear on internal pawls, broken actuator tabs, water ingress and corrosion, or damaged linkage rods are frequent causes of failure.
Technical Information
- Manufacturer: Stellantis (Peugeot/Citroën)
- Model: Peugeot 407 (Saloon/SW/Estate, Coupe) — Driver Side Left Front Door
- Product Codes: 9659739880, F00, 9135AY, 9135FN
- Other Numbers: 9135AY, 9135FN
Installation Recommendations
Before starting, gather basic tools: Torx and Phillips drivers, trim tools, ratchet with metric sockets, and needle-nose pliers. For electrically actuated locks, disconnect the negative battery terminal to prevent short circuits and accidental actuator movement. Remove the inner door trim carefully to avoid breaking plastic clips: first pry off the trim panel, detach any switches and connectors, and unhook the water shield. Disconnect the electrical connector to the lock and detach the locking rods/linkages from their clips. Undo the lock mounting screws, remove the old lock and install the new unit in reverse order. Ensure linkages are properly seated and that the lock bolts are torqued to manufacturer recommendations. Test locking/unlocking with the key, interior handle and central locking system before refitting the trim. If the central locking remains inoperative on that door, check wiring harness and actuator pins for damage or corrosion.
Why This Part Fails Most Often
Door locks on Peugeot 407 commonly fail due to mechanical wear of internal components after many cycles, corrosion from moisture ingress (especially in climates with road salt), broken plastic tabs on the actuator or linkage clips, and impact damage from door alignment issues or accidents. Electrical failures usually stem from connector corrosion, wiring abrasion inside the door, or a burned actuator motor. Regular lubrication of the latch and inspection of door seals can extend service life.
Recommended Maintenance: Periodically lubricate the latch mechanism with a suitable long-lasting spray lubricant, check door seal condition to reduce water ingress, and inspect linkage clips and cables for wear. If the door has been exposed to flooding or heavy corrosion, inspect the entire locking assembly and surrounding sheet metal for rust.
Compatible With: Peugeot 407 models requiring left front (driver) door lock with OEM reference 9659739880 and cross references 9135AY / 9135FN. Use the product codes above when searching for exact matches or replacement parts.
