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:

1. Disconnect the vehicle battery and wait the manufacturer-recommended interval before starting work to prevent airbag deployment and electrical damage.
2. Mark the steering wheel position relative to the spline to preserve alignment. Remove the steering wheel, airbag module and surrounding trim panels as required.
3. Unplug all electrical connectors to the column (sensors, switches and power supply) and remove any intermediate covers.
4. Unbolt the column from the dash and subframe mounting points, then withdraw the assembly carefully.
5. Install the replacement column in reverse order. Use manufacturer torque specifications for all fasteners and ensure connectors are fully engaged.
6. 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.