The Steering Angle Sensor (SAS) 0265005486 / 9662937380 (also referenced 4545H8) is a direct-fit component for many Citroën C4 and C4 Picasso models. Designed to provide accurate steering wheel position and rate information to the vehicle stability control (ESP/ABS) and other driver assistance systems, this unit is commonly searched by its part numbers and is suitable for professional workshops and competent DIYers who perform diagnostics and recalibration after replacement.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C4, Citroën C4 Picasso
• Product Codes: 0265005486, 9662937380
• Other Numbers: 4545H8, 265005486

Function And Application

The steering angle sensor measures the absolute angle and angular velocity of the steering wheel. Its data is used by the ESP/ABS, traction control, electronic stability aids, and, in some systems, by advanced driver assistance modules. Correct and stable SAS readings are essential for accurate intervention of braking and stability systems during cornering and emergency maneuvers.

How It Is Replaced

The sensor is typically located on the steering column assembly, often integrated with or mounted close to the clock spring. Replacement steps (general guidance):

• Secure the steering wheel in the straight-ahead position.
• Disconnect the battery and wait a few minutes to ensure system discharge.
• Remove trim panels and, if required on the model, the steering wheel and airbag following manufacturer safety procedures.
• Access and disconnect the SAS electrical connector and remove the fastening hardware.
• Install the new sensor in the identical orientation, torque fasteners to manufacturer values, reconnect the connector and reassemble.
• Perform steering angle sensor calibration/initialization with a diagnostic tool (see below).

Calibration And Diagnostics

After installation the Steering Angle Sensor must be zeroed or calibrated so the vehicle control units recognize the new reference position. Most PSA vehicles require a diagnostic tool to perform the SAS recalibration or automatic relearn procedure. Without correct calibration, ESP/ABS warnings and degraded stability control can occur. Recommended diagnostic tools include manufacturer-level scanners that support PSA procedures (for example DiagBox/LEXIA where applicable) or equivalent professional scan tools with SAS functions.

Installation Recommendations

• Always disconnect the battery before starting work and follow airbag safety procedures. Mishandling the airbag or connectors may cause injury or system faults.
• Set the steering wheel to the straight-ahead position and do not rotate the wheels during sensor removal/installation to preserve alignment reference.
• Use correct tools and torque values for fixing screws; avoid stressing the sensor housing or connector pins.
• After fitting, perform a full calibration/initialization of the steering angle sensor with a suitable diagnostic tool and clear any stored fault codes.
• If unsure about airbag or steering column disassembly, have the replacement performed by a trained technician.

Most Common Reasons For Failure

• Electrical Faults: Intermittent contacts, damaged wiring or corroded connectors leading to communication errors.
• Mechanical Damage: Impact from accidents or incorrect handling during steering wheel removal can damage the sensor or its mount.
• Wear And Aging: Internal electronics or sensors can degrade over many years/mileage, causing drift or loss of signal.
• Environmental Issues: Moisture ingress or contamination around the steering column can affect sensor reliability.

Why Choose This Part

This steering angle sensor is supplied under the referenced OEM numbers frequently used in parts lookup (0265005486, 9662937380, 4545H8). It is suitable for workshops that require traceable, correctly referenced components to restore proper ESP/ABS function on Citroën C4 and C4 Picasso vehicles. Searching by part number will help you find the exact match for your repair.

The steering angle sensor is an essential safety and comfort component for Citroën C4 and C4 Picasso models. It measures the exact position and rotational movement of the steering wheel and provides data to systems such as ABS, ESP/ESC, traction control and electronic power steering. This used OEM-quality sensor is frequently searched by its part numbers, making it easy to locate for fast replacement during workshop service or DIY repairs.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C4, Citroën C4 Picasso
• Product Codes: 0265005486, 9650236180, 4545H8
• Additional Numbers: 265005486

Function And Application

The steering angle sensor detects the angular position and rate of turn of the steering wheel. Its signal is used by electronic stability control (ESP/ESC), anti-lock braking (ABS), traction control and steering-related assistance systems to calculate wheel slip, apply targeted braking and adjust steering assistance. Accurate steering angle data is also important after wheel alignment or suspension repairs to ensure correct vehicle behavior.

Replacement Procedure

Recommended steps for removal and installation (general guideline for experienced mechanics and DIYers):

• Park the vehicle on level ground, engage parking brake and turn off ignition.
• Disconnect the battery negative terminal before starting any work to prevent electrical damage.
• Remove lower and upper steering column trims to access the sensor (location varies by model).
• Unplug the electrical connector and remove the retaining screws or clips securing the sensor.
• Install the new sensor in the original orientation, tighten fasteners to manufacturer torque, reconnect the plug and reassemble trims.
• Perform steering angle sensor calibration/reset using a suitable diagnostic tool compatible with PSA vehicles. Calibration is required to ensure correct ESP/ABS/steering system operation.

Installation Recommendations

• Always disconnect the battery before removal to avoid short circuits or airbag system faults.
• Keep the steering wheel centered while replacing the sensor to simplify calibration.
• Use a diagnostic tool that supports steering angle calibration; some faults will persist until the sensor is properly calibrated.
• Inspect connectors and wiring for corrosion or damage; replace any compromised harness or connector pins to prevent intermittent faults.
• Follow OEM torque values for fasteners and avoid forcing connectors to prevent breakage.

Most Common Failure Causes

• Electrical faults: damaged wiring, poor connector contact or corrosion leading to intermittent signals.
• Mechanical damage: impact to the steering column during accident or improper handling during repairs.
• Wear and degradation: internal sensor wear or contamination over time, especially in older vehicles.
• Faulty installation or missing calibration after replacement, which can trigger warning lights and disable stability functions.

Searchable OEM numbers (0265005486, 9650236180, 4545H8) are commonly used by workshops and online parts catalogs — enter the part number for fast matching. This steering angle sensor is a cost-effective service part for restoring correct ABS/ESP function and steering system reliability on Citroën C4 and C4 Picasso vehicles. Order now to minimize workshop downtime and get the vehicle back on the road with reliable steering control.

Original sensor/steering wheel angle sensor for Citroën C1 and Peugeot 107, also compatible with Toyota Aygo for the 2013 model year (1 generation). It is a part of disassembly, ideal for solving the stabilization system (ESP/ESC) and ABS, where the correct reading of the steering wheel is key to the safe behavior of the vehicle.

What is used for: SAS – Steering Angle Sensor Angle Sensor sees the position and speed of the steering wheel and passes them to the ABS/ESP control unit. In the event of a failure, the ESP/ABS indicator often lights up, stabilization may be deactivated, and the diagnosis of the steering wheel angle sensor. Replacing for the original part is the safest way to restore the function.

Location and mounting: The sensor is located under the steering wheel on the steering column. Always disconnect the battery before work and wait a few minutes for the airbag. This is followed by dismantling the airbag and steering wheel, removing the column covers, disconnecting the sensor connector and replacement. Make sure the steering wheel is properly centered during assembly. After installation, it is usually necessary to calibrate the basic position of the sensor in the diagnostics – in the PSA using Diabox/Lexia, for Toyota using Techstream (basic sensor settings in the ABS/ESP control unit).

Compatibility: This type is designed for the first generation Citroën C1 and Peugeot 107 and the corresponding Toyota Aygo by 2013.

technical information
Manufacturer: PSA (Citroën/Peugeot), Toyota
Model: Citroën C1 (2005–2013), Peugeot 107 (2005–2013), Toyota Aygo (2005–2013)
Product codes: 4545G8 (PSA), 89245-0H010 (Toyota)
Other numbers: 4545.g8; SAS (Steering Angle Sensor)

Why choose the original part of the removal: the original usually guarantees the correct communication with the ABS/ESP unit and accurate sensing without the need for adjustments. For these cars, it is often worth holding with OEM codes – you will avoid compatibility problems, error reports or the need for repeated calibration.

Tip for quick tracing: If you are looking for a specific part, use the OEM number 4545G8 / 4545.G8 or 89245-0H010 together with the model designation (C1, 107, Aygo). It will significantly speed up the correct pairing of the part with your car.

Commonly found in vehicles like the Peugeot 607, the Steering Angle Sensor helps improve safety by adjusting the vehicle’s dynamics based on the driver’s steering inputs. Regular maintenance and timely replacement of this sensor can prevent issues related to steering performance and enhance overall driving experience.

Replacing the Steering Angle Sensor is a straightforward process, typically requiring only basic tools and knowledge of automotive systems. It is advisable to check this component if you’re experiencing warning lights related to the steering or stability control systems.

Technical Information:

• Manufacturer: PSA
• Model: Peugeot 607
• Product Codes: 0265005404, 9630014780, 454584
• Additional Numbers: NFP

High-quality steering angle sensor designed for Citroën/Peugeot applications, optimised for reliable operation of the ABS/ESP and stability systems. This unit is commonly referenced under part numbers 0265005517, 9658684180 and 4545H8 and is a direct replacement for worn or faulty original sensors used on several Citroën models. Clear-fit installation and correct calibration restore accurate steering position information to the vehicle control units, eliminating related warning lights and steering-assist faults.

Features and Benefits

– Direct-fit replacement for OE referenced steering angle sensors, ensuring correct electrical and mechanical fit.
– Restores accurate steering position data to ABS/ESP and traction control systems.
– Improves vehicle safety and drivability by eliminating erroneous stability control interventions.
– Essential spare part for workshops and DIY mechanics who maintain Citroën C5 X7, C4 Picasso and C4 models.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C5 X7, Citroën C4 Picasso, Citroën C4
• Product Codes: 0265005517, 265005517, 9658684180, 9811627180, 4545H8
• Other Numbers: 4545.H8, 454949

How It Works

The steering angle sensor measures the rotational position of the steering column and communicates this information to safety systems such as ABS, ESP and traction control. The control units use this data to determine vehicle yaw and to intervene when slip or instability is detected. Accurate sensor data is therefore essential for predictable braking and stability behaviour.

Common Failure Modes

Steering angle sensors generally have a long service life but can fail for several reasons:

• Electrical faults or connector corrosion leading to intermittent or lost signal.
• Damage from steering column impacts or accidents that disturb the sensor or its mounting.
• Wear of internal components or encoder elements over time.
• Faults introduced during incorrect removal/installation, especially when the steering wheel/airbag is handled without proper procedure.

Replacement Frequency

There is no fixed replacement interval; the sensor is replaced when it fails or after events that may affect steering geometry (e.g., accidents). If ABS/ESP warning lights appear, or if vehicle stability systems behave unpredictably, the steering angle sensor should be inspected and, if necessary, replaced and recalibrated.

Installation Instructions

General replacement steps for experienced technicians and competent DIY mechanics:

• Park vehicle on level ground, engage the handbrake and place the front wheels straight ahead.
• Disconnect the negative battery terminal and wait at least two minutes to ensure SRS capacitors discharge.
• Remove the driver airbag and steering wheel following manufacturer safety procedures.
• Access the steering column trim and locate the steering angle sensor/clock spring assembly.
• Disconnect the sensor electrical connector and unfasten the sensor from its mount.
• Fit the new sensor in the centred position, secure mechanically and reconnect the wiring harness.
• Reassemble the steering wheel and airbag. Reconnect the battery.
• Perform steering angle sensor calibration with a suitable diagnostic tool and clear any stored fault codes. Verify ABS/ESP system operation and that no warning lights remain.

Recommended For Installation

Use correctly rated hand tools and follow vehicle manufacturer procedures when removing the airbag and steering wheel. Calibration with a compatible diagnostic tool (for PSA vehicles typically DiagBox or an equivalent professional scan tool) is required after replacement to synchronise the sensor with the vehicle control units. Failure to calibrate can result in persistent ABS/ESP faults or incorrect system behaviour.

Why This Part Is Often Replaced

Technicians most frequently replace the steering angle sensor after ESP/ABS warning lights appear, following steering column impacts, or when diagnostics show angle sensor faults. In some cases, failures become apparent after airbag service or steering wheel removal where the sensor or its alignment is disturbed.

Parts And Identification

Common reference numbers for identification and searching: 0265005517, 265005517, 9658684180, 9811627180, 4545H8, 4545.H8, 454949. When ordering, use these codes alongside the vehicle model to ensure a correct match.