Description
Electric power steering column by JTEKT, Denso or Koyo for Citroën C1, Peugeot 107 and Toyota Aygo. Tested, fully functional.
Direct-fit electric power steering column compatible with Citroën C1, Peugeot 107 and Toyota Aygo. This steering column assembly replaces the original unit identified by part numbers 45250-0H011-00, 995-10500 and code 4123AV, offering correct mounting points and electrical interfaces for the listed models. Ideal for professional workshops and DIY mechanics looking for a reliable replacement that restores steering assistance and driving comfort.
Technical Information
- Manufacturer: JTEKT / Denso / Koyo
- Model: Citroën C1; Peugeot 107; Toyota Aygo
- Product Codes: 45250-0H011-00
- Other Numbers: 995-10500; 4123AV
Function and Benefits
The electric power steering (EPS) column integrates the steering shaft, power-assist motor/sensor assembly and the column mounting structure. It provides variable steering assistance based on vehicle speed and driver input, improving low-speed maneuverability and high-speed stability. Replacing a faulty column restores smooth steering feel, eliminates steering-assist faults and removes related dashboard warnings.
Installation Recommendations
Follow these guidelines to ensure safe and correct installation:
- Disconnect the vehicle battery and wait the manufacturer-recommended interval before starting work to prevent airbag deployment and electrical damage.
- Mark the steering wheel position relative to the spline to preserve alignment. Remove the steering wheel, airbag module and surrounding trim panels as required.
- Unplug all electrical connectors to the column (sensors, switches and power supply) and remove any intermediate covers.
- Unbolt the column from the dash and subframe mounting points, then withdraw the assembly carefully.
- Install the replacement column in reverse order. Use manufacturer torque specifications for all fasteners and ensure connectors are fully engaged.
- After installation, perform steering angle sensor calibration and any required electronic initialisation with an appropriate diagnostic tool to clear fault codes and ensure correct EPS behavior.
Most Common Failure Causes
- Wear Or Failure Of Torque/Position Sensors Causing Erratic Assistance Or Fault Codes.
- Motor Or Electronic Module Failures Due To Age, Heat Or Moisture Ingress.
- Connector Corrosion Or Damaged Wiring Leading To Intermittent Operation.
- Mechanical Damage From Collisions Or Excessive Steering Loads Affecting Column Integrity.
- Faults After Improper Service Or During Airbag/Steering Removal If Battery Was Not Disconnected.
Advice For Workshops And DIY Mechanics
Workshops should check for related fault codes and inspect steering linkage and suspension for secondary damage. For a reliable outcome, ensure correct steering angle calibration and road test the vehicle under varied conditions. Because steering is a critical safety system, follow all safety procedures and manufacturer’s service instructions during replacement.
Part numbers 45250-0H011-00, 995-10500 and 4123AV are commonly used when searching for compatible units; include them in searches to find the correct replacement quickly.
