Description
Lock Set – Ignition Switch, Driver’s Door And Fuel Filler Cap – 1x Key
Complete lock set compatible with Citroën C4 models, including ignition switch, driver’s door lock cylinder and fuel filler cap lock supplied with one key. Part is often searched under manufacturer codes 4162EP and 4162EA. Ideal for professional workshops and skilled DIY enthusiasts who need a direct mechanical replacement to restore central locking and ignition functionality.
Key Benefits
Ready-to-install lock set that replaces all main mechanical locks on the driver side and fuel filler. Restores mechanical security, allows single-key operation and reduces downtime by replacing worn or damaged lock components in one job. Suitable for technicians looking for a code-searchable replacement (4162EP / 4162EA).
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4
- Product Codes: 4162EP, 4162EA
- Other Numbers: 4162EA | 4162EP
Suitable For
Designed for vehicles using the cited part codes. Commonly fitted on Citroën C4 variants; check part numbers (4162EP / 4162EA) when searching to ensure compatibility.
How To Replace
Replacement should be performed by an experienced technician or a knowledgeable DIYer. Typical steps:
- Remove interior trims: For door cylinder replacement, remove the door panel and any moisture barriers to access the lock mechanism and retaining clips.
- Steering column and ignition: Remove steering column covers to access the ignition switch/cylinder. Release the retaining screw/clip and withdraw the old barrel carefully.
- Fuel Filler Lock: Access from the wheel arch or fuel filler trim depending on model; remove retaining fasteners and replace the lock barrel.
- Reassembly: Refit trims and fasteners, test mechanical operation of all locks and ensure smooth key engagement.
- Transponder Keys: If the supplied key contains an immobilizer transponder, additional key programming may be required for engine start—arrange programming if necessary.
Installation Recommendations
- Work In A Clean Area: Prevent dirt and debris from entering lock mechanisms during replacement.
- Use Proper Tools: Small trim tools, appropriate screwdrivers and pliers reduce risk of damage to interior panels and clips.
- Check Key Wear: If the old key is heavily worn, have the new key inspected or cut by a professional to avoid premature wear of the new barrels.
- Test All Functions: After fitting, check locking/unlocking, central locking (if applicable) and ignition turn/run positions before finishing reassembly.
Why This Part Fails Most Often
- Mechanical Wear: Frequent use causes tumblers and wafers to wear, resulting in key play, difficulty turning or failure to lock/unlock.
- Key Damage: Bent or worn keys can shear or damage the lock profile, jamming the cylinder.
- Corrosion And Moisture: Water ingress, especially at the fuel filler or door bottoms, leads to corrosion and stiff or frozen operation.
- Dirt And Debris: Accumulated grime in door mechanisms and ignition barrels causes binding and uneven wear.
- Impact Or Vandalism: Forced entry or impacts can bend linkages and break retaining components inside the lock assembly.
Notes For Professionals
Part numbers 4162EP and 4162EA are commonly used search keys; include them in your order reference to speed up parts sourcing. This set is a practical solution when multiple lock components show combined wear or damage and a single replacement job provides better value and reliability than piecemeal repairs.
