Description
Ignition Switch Plus 1 Key.
This Ignition Switch Assembly with one key is intended for professionals and DIY mechanics working on Citroën vehicles. Supplied under the Stellantis/PSA part reference 4162FE, the unit replaces the mechanical lock cylinder and the electrical ignition switch assembly in the steering column, restoring reliable key operation and ignition circuit function. Use product code 4162FE when searching or ordering to make finding the correct part faster.
Application And Fitment
Designed primarily for Citroën C5 models produced in the 2005–2007 period. Fits vehicles that accept the Stellantis part number 4162FE. Ideal for workshops and independent mechanics who want a direct-fit replacement for a worn or faulty ignition switch and lock cylinder.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C5 (2005–2007)
- Product Codes: 4162FE
- Additional Numbers: 4162FE (used as main reference)
Function And Symptoms Of Failure
The ignition switch assembly provides the mechanical lock for the key and the electrical switching needed to supply power to the starter motor and vehicle electronics. Common symptoms indicating a faulty unit include difficulty turning the key, intermittent loss of electrical functions on accessory and ignition positions, engine cranking problems, or a key that becomes stuck. Electrical wear or internal tumbler damage can also cause no-start conditions or erratic behavior.
Why This Part Fails
Failures are typically caused by mechanical wear of the lock cylinder (worn wafers or tumblers), prolonged use with a damaged or worn key, contamination from dust or moisture, and electrical contact degradation inside the switch. Corrosion and foreign particles inside the column accelerate wear. Steering lock mechanisms associated with the ignition assembly can also seize and prevent normal operation.
Installation Recommendations
- Disconnect the negative battery terminal before starting work to avoid short circuits and deactivate airbags/electrical systems.
- Remove steering column trim carefully to access the ignition switch; retain all screws and clips in order.
- Unscrew the ignition switch retaining screw(s), unplug the electrical connector(s) and remove the old unit.
- Install the new assembly in the same orientation, reconnect connectors and secure fasteners to manufacturer torque where specified.
- Reassemble the steering column covers and reconnect the battery. Verify key operation in all positions and confirm starter and accessory circuits function correctly.
- Note: Some vehicles may require key re-synchronization or immobilizer registration after replacement. Perform security procedures according to the vehicle’s service manual.
- Typical replacement time for an experienced technician: 30–60 minutes.
Tips For Buyers
Search and order using the part number 4162FE to ensure the fastest match. If the original key shows heavy wear, consider replacing or cutting a new key to the correct profile before installation to prevent premature wear of the new lock cylinder.
