Description
Electric lock for the left front door for PEUGEOT 407. Driver’s door.
This electric left-front door lock is a direct-fit replacement designed for Peugeot 407 driver-side doors. Ideal for professional workshops and experienced DIYers, the unit restores reliable central locking function, secures the door latch, and integrates with existing electrical locking systems. The part is commonly searched by its product codes, so including the reference numbers in your query increases the chance of a quick match.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 407
- Product Codes: 9686683680
- Other Numbers: 9135AY, 9135FN
Function And Fitment
The lock assembly controls mechanical locking and unlocking of the driver-side front door and works with the vehicle’s central locking and remote key system. It contains the latch mechanism and an electrical actuator that moves the locking pawl. This unit fits Peugeot 407 models requiring a left/front driver-side door lock. Always confirm the part number against the vehicle’s existing component when possible.
Replacement And Installation
Basic replacement steps for a trained mechanic or competent DIYer:
- Park the vehicle with ignition off and remove the negative terminal of the battery to avoid short circuits while working on electrical connectors.
- Remove the interior door trim carefully to access the lock mechanism—take care with plastic clips and retainers.
- Disconnect the electrical connector and any linking rods or cables attached to the lock assembly.
- Unscrew the mounting bolts securing the lock and remove the old unit from the door shell.
- Install the new lock in reverse order: secure mounting bolts, reconnect rods and electrical connector, and reattach the door trim.
- Reconnect the battery and verify operation: lock/unlock with the key, remote, and central locking switch; check for smooth movement and correct alignment of the latch.
Recommended Tools: Torx/Screwdriver set, trim removal tools, socket set, lubricant for latch components. Inspect door linkage and cables while the door trim is removed.
Why The Part Fails
Common causes of failure include mechanical wear of internal plastic gears, corrosion or water ingress into the actuator, damaged linkage rods, and intermittent electrical connections. Symptoms typically include failure to lock or unlock from the central locking system, grinding or clicking noises inside the door, or a door that does not fully latch. Environmental exposure and frequent use accelerate wear.
Installation Recommendations
- Always test the new unit before reinstalling the door trim to ensure correct electrical connection and mechanical movement.
- Lubricate latch contact points with a suitable grease to prolong service life and prevent corrosion.
- Check and, if necessary, replace worn linkage rods or plastic clips when performing the repair to avoid repeat visits.
- Follow standard workshop safety procedures and torque specifications where applicable.
This door lock is a practical replacement option for workshops and competent DIY mechanics working on Peugeot 407 vehicles. Searching by the listed part numbers (9686683680, 9135AY, 9135FN) will help locate the correct component quickly.
