Description
Lock set for Citroën C4 Picasso first generation: Driver’s door, ignition barrel plus 3 x keys
High-quality lock set tailored for the Citroën C4 Picasso (first series). This complete kit includes the driver’s door lock mechanism, ignition barrel and three keys — ideal for mechanics and experienced DIYers who need a reliable replacement during bodywork, accident repairs or routine maintenance. The set is commonly searched by product codes 4162KF / 4162KC (and related reference 4162XT), so it is perfect for customers who look up parts by reference number.
The locks restore mechanical security and steering ignition function; replacing the worn or damaged lock assembly eliminates door jamming, key rotation problems and improves vehicle security. Supplied components are ready for mechanical installation, but keys may require cutting and, depending on vehicle immobilizer configuration, further programming to enable engine start.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 Picasso (First Generation)
- Product Codes: 4162KF, 4162KC
- Additional Numbers: 4162XT
Installation Recommendations
- Before starting work, disconnect the vehicle battery to prevent short circuits and to protect any immobilizer or electronic modules.
- Remove the interior door card and any trim to access the door lock mechanism. Support the door glass if required.
- Unscrew the lock assembly mounting bolts, detach mechanical linkages and any electrical connectors for central locking (if present).
- Replace the ignition barrel by removing the retaining clip or screws; ensure the new barrel engages correctly with the steering column lock when installing.
- Install the new door lock, reconnect linkages and connectors, then test mechanical operation of the latch and locking function before refitting the door card.
- Have the keys cut to match the supplied blanks. If the vehicle uses transponder immobilizer keys, programming or synchronization may be required for the engine to start — this is done with appropriate diagnostic equipment or by a qualified locksmith.
- Lubricate the lock cylinder with a dry graphite or specialist lock lubricant; avoid wet oils that attract dirt.
Why This Part Most Commonly Fails
- Mechanical Wear: Years of use cause tumblers and wafers inside the cylinder to wear, leading to difficult or incomplete key rotation.
- Corrosion and Contamination: Water ingress, dirt and salt accelerate corrosion of lock internals and linkages, causing sticking or seizure.
- Key Damage: Worn or bent keys damage the cylinder profile and increase wear on tumblers.
- Forced Entry or Impact: Attempts to force the lock or accident damage to the door can deform components and impair operation.
- Actuator Failure: In locks with integrated central locking actuators, the small electric motor or gears can fail and prevent locking/unlocking even if the mechanical cylinder works.
Notes for Mechanics and DIYers
This set is aimed at professionals and experienced DIY enthusiasts who are comfortable with door disassembly and key handling. Use common workshop tools and follow manufacturer torque and reassembly guidelines. Searching by the listed product codes (4162KF / 4162KC / 4162XT) will help you quickly match the correct part for the Citroën C4 Picasso first generation.
