Description
Electric Central Locking Actuator – Left Front Driver’s Door For PEUGEOT 307
Description
This electric central locking actuator is a direct-fit replacement for the left front driver’s door of the Peugeot 307. Commonly searched under part number 9135N4, this actuator restores reliable locking and unlocking via the vehicle’s central locking system. Designed for mechanics and competent DIYers, the unit replaces the internal door lock mechanism and reconnects the electronic lock signal to the latch.
Key Benefits
- Direct Replacement: Designed to fit the Peugeot 307 left front door without major modifications.
- Part Number Search Friendly: Frequently found by searches for 9135N4 and Stellantis/Citroën/Peugeot references.
- Practical For Workshops and DIY: Straightforward installation process for experienced technicians and informed owners.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Peugeot 307
- Product Codes: 9135N4
- Other Numbers: 9135N4 (Stellantis Reference)
Function And What To Expect
The actuator converts electrical locking commands from the central locking system into mechanical movement of the door latch. When operating correctly it drives the latch rod or lever to lock and unlock the door, engages the microswitch feedback if present, and maintains secure closure of the door. Failures typically present as intermittent locking, inability to lock/unlock the door from the remote or interior switch, or a noisy/muted motor action inside the door panel.
Installation Recommendations
- Safety First: Disconnect the battery before starting to avoid short circuits and accidental airbag deployment.
- Remove Door Trim: Carefully detach the door card and any vapor barriers without tearing them to preserve soundproofing and water protection.
- Disconnect Electrical Connector: Unplug the actuator wiring harness and release any cable clips or rods attached to the latch mechanism.
- Unbolt And Replace: Remove fasteners securing the lock assembly, replace with the new actuator, reattach linkages and connectors, then reassemble the door panel.
- Function Check: Reconnect the battery and test locking/unlocking from remote, interior switch, and manual key before final reassembly.
- Use Correct Tools: Torque bolts to manufacturer recommendations where applicable and avoid forcing plastic clips to prevent damage.
Why The Part Most Commonly Fails
Door lock actuators on Peugeot 307 often fail due to a few recurring causes: water ingress and corrosion inside the door, wear of small electric motor brushes or plastic gears, broken or fatigued linkage arms, and connector corrosion or wiring faults. High mileage, frequent use, or exposure to road salt and moisture accelerate wear. In many cases the symptoms begin as intermittent operation and progress to complete failure.
Practical Tips For Long Service Life
- Ensure door seals are intact to reduce water reaching the actuator.
- Protect exposed connectors with dielectric grease to prevent corrosion.
- Check and lubricate linkages when servicing the door to avoid binding that increases motor load.
- Replace worn actuators promptly to avoid door latch sticking and potential security issues.
Compatibility Note
This listing is aimed at professionals and competent DIYers familiar with Peugeot 307 door assemblies. The product is typically identified by the part code 9135N4; please verify that this code matches the part you are replacing on your vehicle before installation.
