Description
Electric lock for the left rear door for Citroën C4 Picasso and Grand Picasso. Rear driver’s side door.
This Electric Door Lock For Left Rear Door is designed as a direct-fit replacement for Citroën C4 Picasso and Grand Picasso models. Built for workshop use and DIY repairs, the unit restores central locking and ensures reliable door latching on the rear driver’s side. Frequently searched by part number, this lock is suitable for technicians and experienced owners looking for a precise replacement that fits original mounting points and electrical connectors.
Function And Application
The unit is an electric door lock/actuator assembly for the left rear (driver’s side rear) door. It controls the latch mechanism and interfaces with the central locking system and interior/exterior door handles. When actuated, the motor and gearing inside the assembly move the latch rod to lock or unlock the door and to allow the latch to release when the handle is operated.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 Picasso, Citroën C4 Grand Picasso
- Product Codes: 9137H1, 9137H124090158
- Additional Numbers: 24089158, 24092158
How To Replace
Replacement requires basic workshop tools and careful handling. Typical procedure:
- Disconnect the vehicle battery before starting work to avoid short circuits and unwanted actuator operation.
- Remove the inner door trim panel and any clips or screws securing it. Carefully peel back the water/sound insulation sheet to access the lock area.
- Disconnect the electrical connector from the lock actuator and unclip the linkage rods from the latch and handles (note positions for reassembly).
- Unbolt the lock assembly from the door frame and remove it. Fit the new unit into the mounting points, reattach linkage rods and electrical connector.
- Before refitting the door trim, reconnect the battery and test locking/unlocking, handle release and central locking feedback. Only reassemble the door panel after confirming correct function.
Installation Recommendations
- Perform installation on a flat, stable surface and keep removed fasteners organized for reassembly.
- Use appropriate trim tools to avoid damaging clips and door trim. Replace any torn vapour barriers to prevent water ingress.
- Check rod clips and door handle bushes while replacing the lock — worn clips often cause improper operation and should be renewed.
- Test the lock function (manual handle, central locking, child lock if equipped) before closing the door trim.
Why This Part Most Commonly Fails
Common causes of failure include motor or gear wear inside the actuator, corrosion from moisture ingress, mechanical damage to linkage rods or plastic clips, and foreign objects or rust seizing the latch. Repeated use, exposure to water and road salts, and aging plastics/gaskets accelerate wear. Symptoms of a failing unit are intermittent locking/unlocking, inability to lock or unlock the door, or noisy operation from the lock area.
Service Life And Maintenance
Expected lifetime varies with usage and environment but typically spans several years; harsh conditions (frequent water exposure, salted roads) shorten service life. Regular inspection of door seals and prompt replacement of torn vapour barriers reduce the risk of corrosion and premature failure.
Search And Fitment Tips
This lock is often searched by part numbers 9137H1, 9137H124090158, 24089158 and 24092158. Confirm match by visual comparison of mounting points and connector type if ordering as a direct replacement.
Reason For Purchase
Ideal for workshops and competent DIYers needing a precise replacement for a faulty left rear (driver’s side) door lock on Citroën C4 Picasso or Grand Picasso. Restores secure latching and reliable central locking operation.
