Description
Electric Central Lock Actuator – Left Front Door For PEUGEOT 307 (Driver’s Door)
This electric central locking lock is designed for the left front (driver’s) door of Peugeot 307 vehicles. It restores reliable central locking operation for doors that fail to lock or unlock electrically and is often sought under OEM codes 9135N4 and 9135Z0.
Designed with mechanics and experienced DIYers in mind, this door lock actuator offers a direct replacement for worn or damaged original units. It recovers remote and local locking functions, ensures proper door latching, and helps eliminate intermittent locking faults that can leave a vehicle unsecured. Common search terms include: Peugeot 307 door lock, central locking actuator 9135N4, left front door lock 9135Z0.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Peugeot 307
- Product Codes: 9135N4, 9135Z0
- Other Numbers: Position Left Front (Driver)
Installation Recommendations
- Prepare Tools: Trim removal tools, Torx and Phillips drivers, 10 mm socket, pliers, and a multimeter for basic electrical checks.
- Safety First: Disconnect the negative battery terminal before starting work to avoid short circuits or unintended airbag/central locking operation.
- Remove Door Trim: Carefully pry off the interior door panel and disconnect electrical connectors for power windows and speakers to access the lock assembly.
- Disconnect Linkages: Detach the door lock rods and any interior handle linkages. Note positions or take photos to aid reassembly.
- Unbolt Actuator: Remove the mounting screws/bolts securing the lock actuator and lower the assembly out of the door cavity.
- Swap Unit: Replace with the new actuator, reconnect linkages and electrical connector, then temporarily reconnect the battery to test locking/unlocking function before final reassembly.
- Final Check: Verify smooth mechanical operation of the latch, check central locking remote function and door sensor signals, then reassemble the door trim panel.
Common Failure Causes
- Plastic Gear Wear: Internal plastic gears and small components can wear or break over time, causing the actuator to lose drive or to operate intermittently.
- Water Ingress and Corrosion: Moisture entering the door cavity leads to corrosion of electrical contacts or degraded internal components, especially in older vehicles or where door seals are compromised.
- Electrical Connector Faults: Damaged connectors, wiring chafing, or poor crimp joints can interrupt power or signal to the actuator.
- Mechanical Linkage Problems: Bent, seized, or detached rods and levers can prevent correct movement even if the actuator itself is functional.
- Typical Lifespan: Actuators commonly fail after several years of use (often around 8–15 years depending on climate and usage). Regular inspection of door seals and servicing of door internals can extend service life.
Ideal for professional garages and competent DIY technicians, this left front door lock actuator provides a straightforward repair path to restore central locking reliability on Peugeot 307 models. When replacing, follow the installation steps and verify both mechanical and electrical operation before completing reassembly to ensure long-term performance.
