Description
Overview
This left rear door lock for the Citroën C4 Grand Picasso (part number 9137H0) is a direct-fit door latch and actuator assembly intended for PSA group vehicles. Designed for professional mechanics and experienced DIY enthusiasts, it restores secure door closing, central locking function and reliable operation of the left rear door.
Features and Function
The assembly combines a mechanical latch with an electric actuator that engages the central locking system. It secures the door in the closed position, triggers interior door sensors, and responds to remote or central locking commands. Proper fitment ensures smooth latch operation, correct striker engagement and reliable child-lock functionality where applicable.
Common Failure Modes And Causes
Door locks on family cars like the C4 Grand Picasso typically fail due to moisture ingress and corrosion, wear of mechanical components, broken actuator motor or gears, damaged linkage, or electrical connector issues. Symptoms include intermittent locking, a door not latching fully, unusual noises when operating the lock, or complete loss of central locking response on the affected door.
Replacement And Installation Notes
Replacement is straightforward for a qualified mechanic or an experienced DIYer with basic tools. Typical steps:
- Disconnect the vehicle battery to prevent short circuits.
- Remove the interior door trim and moisture barrier to access the lock unit.
- Disconnect electrical connector(s) to the actuator and any lock rod/linkage.
- Unbolt the old lock from the door shell and withdraw the unit carefully.
- Position the new lock, secure with original fasteners, reconnect linkage and electrical connector(s).
- Reinstall the moisture barrier and trim, reconnect the battery, and test door latching, central locking, and child-lock functions.
Use trim tools to avoid damaging clips and check door alignment and striker condition during reassembly. Lubricate latch points with a suitable spray lubricant to prolong service life.
Compatibility And Fitment
This part is specified for the left rear door of the Citroën C4 Grand Picasso and carries the OEM reference 9137H0. Always verify fitment by matching the part number and door side before purchase. If in doubt, compare the connector type, mounting points and linkage arrangement with the original unit.
Technical Information
- Manufacturer: PSA / Citroën / Peugeot
- Model: Citroën C4 Grand Picasso (left rear door)
- Product Codes: 9137H0
- Other Numbers: None known
Notes For Buyers
Recommended for mechanics and competent DIYers who can safely remove interior door trim and handle electrical connectors. If the vehicle shows signs of corrosion around the door shell or striker, address those issues to prevent accelerated wear of the new lock. Verify the part number 9137H0 against the old unit prior to installation to ensure correct fitment.
