Description
Electric lock for the left front door for Citroën C8 and Peugeot 807. Used part with a warranty of functionality. Driver’s door.
This electric left-front door lock (door lock actuator) is a direct-fit replacement for Citroën C8 and Peugeot 807 models and is often sought under the product code 9135L4. The unit controls central locking and the mechanical latch on the driver’s door, restoring secure closing and remote locking functions. Ideal for professional workshops and experienced DIYers who need a reliable replacement part that fits OEM mounting points and electrical connectors.
Function And Benefits
The actuator operates the locking mechanism and latch release on the driver’s door. Replacing a faulty unit restores central locking, remote locking/unlocking and prevents door ajar warnings. Benefits include straightforward installation on vehicles with original door hardware, compatibility with factory linkages, and a cost-effective repair compared with replacing larger assemblies.
Technical Information
- Manufacturer: Citroën / Peugeot (Stellantis)
- Model: Citroën C8, Peugeot 807
- Product Codes: 9135L4
- Additional Numbers: 9135.L4
Installation Recommendation
Recommended for trained technicians or competent DIYers. Basic replacement steps: disconnect the negative battery terminal for safety; remove the inner door trim and plastic moisture barrier; disconnect the electrical connector and unclip the locking rod linkages; remove the retaining bolts and extract the lock assembly; install the replacement unit, reconnect linkages and connector, then test locking and handle functions before reassembling the door. Use suitable trim tools to avoid damaging clips and ensure all fasteners are torqued to factory specification.
Most Common Failure Reasons
Door lock actuators commonly fail due to moisture ingress and corrosion of internal components, worn or broken plastic gears, seized mechanical parts, or electrical motor/connector faults. Mechanical strain from forced door operation or damaged linkages can also accelerate wear. Environmental exposure (road salt, water) is a frequent factor on older vehicles, especially in cold or coastal climates.
Practical Tips
Before replacing the lock, check the electrical connector for corrosion, verify power supply at the connector, and inspect linkage clips for damage. After fitting, confirm smooth operation of the latch and remote locking from both the key fob and interior switch. If multiple doors show symptoms, investigate central locking system fuses and control modules in parallel.
Compatibility And Notes
Fits Left Front (Driver’s) Door on Citroën C8 and Peugeot 807 models where the OEM code 9135L4 applies. Reference the product code 9135L4 when searching for parts to improve match accuracy. This is a used unit offered with a warranty of functionality as stated above.
