Description
Lock set for Citroën C4 II (B7) vehicles. Driver door lock plus ignition barrel. 2 x keys.
Restore reliable locking and ignition operation with this complete lock set for the Citroën C4 II (B7). The kit contains the driver door lock mechanism and the ignition barrel together with two keys, making it a practical solution for workshops and DIY mechanics who need a one-stop replacement for worn or damaged locks. Commonly searched under product codes 4162WH and 4162WK, this set is an easy way to eliminate door jamming, key sticking or ignition cylinder wear that causes starting issues.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C4 II (B7)
- Product Codes: 4162WH, 4162WK
- Additional Numbers: Not Specified
What Is Included
Driver door lock mechanism, ignition barrel (switch housing), and two keys. Keys may require cutting to match the vehicle; check whether transponder programming is necessary for your vehicle variant.
Compatibility And Fitment
Designed for Citroën C4 II (internal B7 designation). Verify fitment by matching the product codes 4162WH / 4162WK with the existing parts on the vehicle. Suitable for technicians familiar with PSA/Stellantis door lock assemblies and ignition barrels.
Function And Typical Symptoms
The door lock secures and mechanically operates the latch and central locking pulses for the driver’s door. The ignition barrel allows mechanical key insertion and rotation to operate the ignition switch. Faulty units usually present as a key that won’t turn, difficulty locking or unlocking the door, intermittent central locking operation, or inability to start the engine due to worn tumblers or a seized barrel.
Installation Recommendations
- Always disconnect the battery before starting work and follow manufacturer procedures to avoid electrical damage.
- Remove the door trim panel carefully using trim tools to access the lock mechanism; support the window glass if necessary.
- Disconnect electrical connectors and linkages, unbolt the lock assembly, and remove the ignition barrel following the vehicle-specific disassembly steps.
- Transfer any required linkages or clips from the old unit if not supplied with the set, then install the new lock and ignition barrel in reverse order.
- Have keys cut to match the supplied blanks; if the vehicle uses immobilizer transponders or remote functions, program the keys with appropriate equipment or by a qualified locksmith/PSA diagnostic tool.
- After installation, verify mechanical operation of the lock, central locking function, and correct ignition positions; lubricate moving parts with a dry graphite or dedicated lock lubricant where recommended.
Most Common Failure Causes
- Mechanical Wear: Tumblers and internal levers wear over time leading to key sticking or loss of engagement.
- Corrosion and Water Ingress: Moisture in door cavities accelerates rust and seizing of mechanisms.
- Foreign Objects and Debris: Dirt or broken key fragments can jam the cylinder.
- Force/Damage: Attempts to force a stuck lock or attempted theft can deform components.
- Electrical Actuator Failure: For locks with central locking actuators, motor failure or wiring issues can mimic mechanical lock faults.
This lock set is aimed at professional workshops and competent DIY mechanics who want a reliable replacement part that restores locking and ignition function. Searchable product codes: 4162WH, 4162WK.
