Description
Electric central locking actuator for left front door for Citroën C1 and Peugeot 107. 5-door, 5-pin.
Replace your worn or faulty left front door lock with this direct-fit electric central locking actuator (part number 9135T2) designed for Citroën C1 and Peugeot 107 five-door models. Ideal for professional mechanics and DIY enthusiasts, this unit restores reliable locking, improves vehicle security, and eliminates intermittent locking issues caused by failed actuators or corroded contacts. Commonly searched under the code 9135T2, this part is a straightforward swap that reduces workshop time and gets the door operating like new.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C1, Peugeot 107
- Product Codes: 9135T2
- Other Numbers: Left Front Door, 5-Pin Connector, For 5-Door Versions
Function and Application
This electric door lock actuator is part of the central locking system. It receives an electrical signal when locking or unlocking and operates the locking mechanism inside the left front door. The unit combines a small electric motor and mechanical gears to move the latch/locking rod and ensure secure closure. It is fitted on the left front door of five-door Citroën C1 and Peugeot 107 models and is compatible with the original 5-pin connector configuration.
Installation Guide
Basic steps for replacement (for experienced technicians or competent DIYers):
- Disconnect the battery before starting work to avoid short circuits and protect electronic modules.
- Remove the door trim panel and any moisture/vapor barrier carefully to access the lock assembly.
- Disconnect the 5-pin electrical connector from the actuator and unclip any linkage rods from the mechanism.
- Remove the mounting bolts securing the lock assembly, extract the old unit, and transfer any required linkage clips or brackets to the new actuator.
- Install the new actuator, reconnect linkages and the electrical connector, then restore the door trim.
- Reconnect the battery and test locking/unlocking operation several times (remote, central lock, and manual key) before final assembly.
Recommended Workshop Tips
- Use dielectric grease on the electrical connector to reduce corrosion and improve long-term reliability.
- Inspect and lubricate latch and striker with suitable dry or graphite lubricant to prevent binding.
- Check door alignment and striker condition—misalignment increases load on the actuator and shortens service life.
- Retain original fasteners and torque to manufacturer recommendations where available.
Why This Part Fails
Door lock actuators typically fail due to a combination of factors:
- Water Ingress and Corrosion: Moisture entering the door cavity leads to corrosion of contacts, motor brushes, and gears.
- Worn Motor or Gears: Repeated use over years wears internal gears or the small DC motor, causing intermittent or complete failure.
- Damaged Electrical Connector: Corroded or loose terminals between the harness and actuator create unreliable signals.
- Mechanical Strain: Misaligned door or damaged striker increases resistance on the mechanism, accelerating wear.
Compatibility Notes
This actuator is intended for Citroën C1 and Peugeot 107 five-door models with a 5-pin connector and left front door configuration. It is often referenced by part code 9135T2 in parts catalogs and searches.
Installation Recommendations
- Always disconnect the battery before removal and follow safe workshop practices.
- Test the actuator function electrically before refitting the door card to save time if rework is needed.
- When replacing, inspect wiring harness and door seals to prevent repeat failures from moisture.
