Description
Electric power steering column by Jtekt, Denso or Koyo
For CITROËN C1, PEUGEOT 107 and Toyota Aygo
Tested, fully functional
Overview
This electric power steering column is a direct-fit replacement used on Citroën C1, Peugeot 107 and Toyota Aygo models. It is compatible with steering assemblies supplied by Jtekt, Denso or Koyo and is offered under common part references such as 45250-0H010-00 and 995-10500, including manufacturer cross-references 4123AV and 4123S8. Designed for technicians and DIY enthusiasts, the column restores electric-assist steering function, improves steering feel and removes faults related to worn or failed column components.
Technical Information
- Manufacturer: Jtekt / Denso / Koyo
- Model: Citroën C1, Peugeot 107, Toyota Aygo
- Product Codes: 45250-0H010-00, 995-10500
- Other Numbers: 4123AV, 4123S8
Fitment And Compatibility
This steering column fits the first-generation Citroën C1 and Peugeot 107 and the equivalent Toyota Aygo platforms that share the same steering architecture. Always verify the part numbers listed above against the unit you are replacing to ensure correct mechanical and electrical mating. The column includes the electric assist motor and associated sensors typically integrated within the assembly.
Installation Recommendations
- Disconnect the battery before starting work and wait the manufacturer-recommended time to disable the airbag system.
- Center the steering wheel and note its position relative to the front wheels. Mark the steering shaft and wheel to preserve alignment during reassembly.
- Remove driver airbag and steering wheel following the vehicle manufacturer’s procedure; then remove trim panels to access column fasteners.
- Support the column while releasing mounting bolts and disconnect electrical connectors carefully to avoid damaging sensor plugs.
- On installation, tighten fasteners to the manufacturer’s torque specifications and reassemble in reverse order. Reconnect the battery only after the column and airbag are secured.
- After replacement, clear any steering-related fault codes and perform steering angle sensor calibration if required by the vehicle — some vehicles may need a diagnostic tool to complete the procedure.
Why This Part Fails Most Often
Electric steering columns can develop faults for several common reasons:
- Wear Of Internal Components: Bearings, universal joints or the collapsible section can wear, causing play or unusual steering feel.
- Electrical Faults: Motor brush wear, Hall sensors, or internal encoder failures can lead to loss of assist or fault codes.
- Connector Corrosion Or Damage: Moisture ingress or damaged wiring at the column connectors may interrupt power or signal paths.
- Impact Damage: Steering column components are vulnerable in collisions; deformation or sensor damage often results from impact.
Practical Notes For Mechanics And DIYers
Technicians will appreciate that the listing includes OE and cross-reference numbers (45250-0H010-00, 995-10500, 4123AV, 4123S8) for fast identification. Replacement is straightforward for a competent mechanic with basic tools, but take care with airbag removal and electrical connectors. If fault codes persist after mechanical replacement, further diagnosis of the vehicle’s CAN network and steering sensors may be required.
