Description
Product Overview
High-quality right front door lock designed for Citroën C4 5-door models. This unit replaces the passenger-side central locking mechanism and restores secure locking and smooth latch operation. Intended for professional fitment by mechanics or experienced DIY technicians who search by part number for direct replacements.
Key Features
- Direct replacement for the right front (passenger side) central locking unit of Citroën C4 5-door models.
- Compatible with multiple PSA part numbers to simplify identification and ordering.
- Restores reliable locking/unlocking, reduces noise from worn latches, and ensures proper door closure.
- Designed for fast bench or in-vehicle replacement with standard hand tools.
Fitment & Compatibility
Designed primarily for Citroën C4 5-door models as the right front (passenger-side) door lock. Also fits PSA vehicles that use the listed part numbers. Always verify compatibility by comparing the vehicle’s original part number and connector configuration before purchase.
Function And Symptoms
This part is the door latch/lock assembly responsible for the passenger-side central locking operation. It receives electrical signals from the central locking system (remote key or door switches) and mechanically engages the latch. Common symptoms of a failing unit include a door that will not lock or unlock, intermittent central locking response, unusual grinding or clicking noises, or a door that fails to stay closed.
Installation & Replacement Guidance
Basic replacement steps (general guidance):
- Disconnect the vehicle battery for safety before starting electrical work.
- Remove the interior door trim and protective moisture barrier carefully to access the lock assembly.
- Disconnect the electrical connector and any locking rods or linkages attached to the mechanism.
- Unbolt the latch/lock unit from the door shell, replace with the new unit, reconnect linkages and the connector, then test operation before reassembling the door panel.
- Typical tools required: trim removal tools, Torx/metric sockets, ratchet, screwdrivers, and pliers. Allow 45–90 minutes depending on experience and vehicle condition.
Common Failure Causes And Service Life
Failures are often caused by mechanical wear of plastic gears, corrosion from water ingress, seized linkages, or electrical faults in the actuator or connector. Road salt and moisture accelerate deterioration. Service life varies with use and environment; many units perform for several years, but frequent exposure to water or heavy use can shorten service intervals. Inspect door seals and drainage to reduce premature failure.
Notes
Always confirm exact part numbers and connector types before ordering. If central locking issues are intermittent, check wiring and fuses in addition to the lock mechanism. For reliable results, test the new unit electrically and mechanically before full reassembly.
Technical Information
- Manufacturer: PSA (Citroën / Peugeot)
- Model: Citroën C4 (5-Door) – Right Front / Passenger Side
- Product Codes: 9647172680, 9136R8, 9136ES
- Other Numbers: 9683415980, 9660699780 F03, 9136AG
If in doubt about fitment, compare these numbers with the original part on the vehicle or contact a parts specialist with the vehicle VIN for exact confirmation.
