Left Front Electric Door Lock for Citroën/Peugeot 9135L4

Description

Electric lock for left front door for CITROËN C8, PEUGEOT 807 Used part with guaranteed functionality Driver’s door

If you are looking for a reliable replacement for the left front door lock on Citroën C8 or Peugeot 807, this electric door lock (part number 9135L4) is a cost-effective solution for workshops and DIY mechanics. The unit replaces the factory lock/actuator assembly and restores central locking, remote locking and mechanical key operation on the driver’s door. Frequently searched under the code 9135L4, this used part comes with a guarantee of functionality and is a direct-fit component for vehicles listed below.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C8, Peugeot 807
• Product Codes: 9135L4
• Additional Numbers: No other numbers provided

Function And Fitment

The electric lock assembly combines the mechanical latch with an electrical actuator that controls locking/unlocking via the vehicle’s central locking system. On fitment to the driver’s door it operates the door latch, enables remote central locking and interfaces with door handle rods and electrical connectors. Designed as a direct replacement for the left (driver) front door on Citroën C8 and Peugeot 807 models that use the 9135L4 configuration.

Installation Recommendations

• Required Tools: Torx and Phillips screwdrivers, trim removal tools, 10 mm socket, multimeter for electrical checks.
• Time Estimate: Approximately 30–60 minutes for an experienced mechanic; allow more time if interior trim clips are brittle.
• Basic Steps:
  1. Disconnect the negative battery terminal to prevent short circuits or airbag faults.
  2. Remove inner door trim carefully using trim tools to avoid breaking clips.
  3. Disconnect electrical connector(s) to the lock/actuator and detach the locking rods (note or photograph rod positions before removal).
  4. Unbolt the lock assembly, replace with the new unit, reconnect rods and electrical connector, then test operation before reassembling the trim.
  5. Check that remote locking, manual key lock and interior handle operation function correctly after installation.
• Practical Tips: Protect door trim edges, label any removed screws, and verify door alignment to ensure smooth latch operation. If electrical operation is intermittent, check connector pins and wiring for corrosion before replacing the entire assembly.

Most Common Failure Reasons

• Actuator Motor Wear: Repeated use can wear the small electric motor or gearbox inside the actuator, causing failure to lock or unlock.
• Water Ingress and Corrosion: Moisture can penetrate the mechanism or connectors, leading to electrical faults or seized mechanical parts.
• Broken Linkage Rods or Clips: Mechanical rods and plastic clips that connect handles to the lock are prone to breakage, causing loss of operation even if the actuator is functional.
• Connector And Wiring Problems: Corroded or damaged wiring and pins cause intermittent or complete loss of electrical control over the lock.
• Mechanical Wear Of Latch Components: Over time the latch pawls and springs can wear, resulting in doors that do not fully catch or that unlock unexpectedly.

Signs that the lock is failing include erratic locking/unlocking behavior, need to manipulate the key or handle to lock/unlock, unusual noises from inside the door, or complete non-response to central locking commands. Replacing the lock assembly with a correctly matched unit (9135L4) usually restores full functionality.

This used part is offered for professional workshops and competent DIYers who can follow the installation recommendations. Including the part code 9135L4 in your search will help you find the correct fitment for Citroën C8 and Peugeot 807 driver’s doors.