This AFIL lane monitoring sensor (No. 2) is a direct-fit component for a range of Citroën and Peugeot models and is frequently searched by its OE numbers. It Restores The Lane Departure Functionality Of Vehicles Equipped With AFIL Systems, Helping Maintain Safety Features Used Daily By Drivers. The Part Is Intended For Professional Workshops And Experienced Do-It-Yourself Mechanics Who Are Familiar With ADAS Components.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: AFIL Lane Departure Sensor No. 2
• Product Codes: 9659847280, 6590W1
• Other Numbers: 603.012

Compatibility

Fits Various Citroën And Peugeot Models Including (Non-Exhaustive List):

• Citroën C4
• Citroën C4 Picasso
• Citroën C5
• Citroën C5 X7
• Citroën C6
• Peugeot 308
• Peugeot 407

Installation Recommendations

• Always Work Safely: Disconnect The Battery Before Starting Work On Electrical Or ADAS Systems.
• Accessing The Unit: The Sensor Is Typically Mounted Near The Wheel Arch Or Inner Fender Area. Remove The Wheel Arch Liner Or Trim Panels To Reach The Mounting Point.
• Dealing With A Seized Screw: If The Mounting Screw Is Corroded Or Seized, Carefully Drill Out Or Extract The Fastener. Use Appropriate Tools To Avoid Damaging The Housing Or Surrounding Bodywork.
• Electrical Connections: Inspect And Clean Connectors Before Reassembly. Ensure Seals And Wiring Harness Are Intact And Free From Moisture.
• Reassembly And Checks: Refit The Sensor Securely And Use Manufacturer Torque Values Where Available. After Installation, Verify System Operation Through The Vehicle’s Self-Checks And Perform ADAS Recalibration Or Diagnostics If Required.

Most Common Failure Reasons

• Corrosion And Seized Fasteners Caused By Road Moisture And Salt Leading To Difficult Removal And Potential Damage.
• Impact Or Mechanical Damage From Road Debris Or Minor Collisions Affecting Sensor Alignment Or Housing.
• Electrical Connector Corrosion Or Wiring Harness Damage Resulting In Intermittent Or Complete Failure.
• Internal Electronics Degradation Due To Moisture Ingress Or Ageing Components Affecting Sensor Performance.

Searchable OE Numbers Such As 9659847280 And 6590W1 Make This Part Easy To Find When Replacing AFIL Components. For Professional Results, Follow Proper Removal Techniques For Seized Fasteners And Complete Any Required System Calibration After Fitment.

The AFIL lane monitoring sensor is a critical component of the lane departure / lane keeping assistance systems fitted to many Citroën and Peugeot models. Supplied under OEM references 9663116580 and 6590W1, this sensor monitors vehicle position relative to lane markings and provides input to the vehicle electronic systems that warn or assist the driver when the vehicle drifts from its lane. The unit is commonly searched for by its product codes, so listing 9663116580 and 6590W1 in your enquiry will speed up identification.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Product Codes: 9663116580, 6590W1
• Additional Numbers: 6590 W1, 9663 116 580 (variants and spacings may be used in catalogs)

Installation Recommendations

Recommended for experienced technicians or competent DIYers. Before starting, follow general safety procedures: isolate the vehicle electrical system according to manufacturer guidance. Typical replacement steps:

• Park the vehicle on a level surface and secure it. If required, remove the relevant wheel to improve access.
• Remove the inner wheel arch liner or bumper trim to reach the AFIL unit mounted near the wheel arch or front structure.
• Disconnect the electrical connector from the sensor. Inspect the plug and wiring for corrosion or damage.
• Remove the mounting fastener. If the screw is seized or rusted (a common issue), it may be necessary to drill it out carefully as noted in the original description.
• Fit the new sensor, secure it to the body using appropriate hardware, reconnect the electrical connector and reassemble trims.
• After replacement, perform the vehicle’s ADAS self-check and recalibration procedures where required by the manufacturer to ensure correct lane detection performance.

Most Common Failure Causes

• Corroded or Seized Mounting Screw: Prolonged exposure to road salt and moisture often seizes the fastener holding the unit to the wheel arch; drilling out the screw is frequently required.
• Water Ingress And Corrosion: Moisture can penetrate the connector or housing, causing intermittent faults or total failure.
• Mechanical Damage: Impacts to the bumper or wheel arch area can misalign or damage the sensor.
• Electrical Faults: Damaged wiring, poor connectors or short circuits lead to communication errors with the vehicle ECU.

This AFIL sensor (OE 9663116580 / 6590W1) is a direct search term for workshops and self-repairers looking to restore lane monitoring functionality on the listed Citroën and Peugeot models. Clear identification by product code reduces installation time and helps ensure you order the correct unit for efficient replacement.

This AFIL (Lane Departure/Lane Keeping) sensor is a direct-fit safety component used on a range of Citroën and Peugeot models. Ideal for professional workshops and experienced DIY mechanics, the unit restores proper lane-monitoring function and eliminates error codes related to AFIL channel 4. Common search terms and part numbers associated with this item (9663116280, 6590W1) make it easy to find in parts catalogs and diagnostic listings.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Product Codes: 9663116280, 6590W1
• Other Numbers: 603.012

Compatibility is based on the listed part numbers and model families. Always confirm the part number stamped on the old sensor before ordering to ensure identical fit and connector type.

Function

The AFIL sensor monitors lane position and supplies data to the vehicle’s lane departure/assist system. When functioning correctly it helps detect unintentional lane drift and supports driver-warning or corrective systems. Faulty AFIL sensors typically trigger fault codes and can disable lane-assist features.

Installation Recommendations

Recommended for installation by trained mechanics or competent DIYers with basic electrical and bodywork skills. Typical replacement steps:

• Disconnect the vehicle battery before starting to avoid short circuits.
• Remove inner wheelarch liner or relevant trim to access the sensor mounting.
• Unplug the sensor electrical connector and remove mounting fasteners. Note: The mounting screw may be seized or corroded—drilling out the screw or carefully extracting it may be required (as noted in the original technical comment).
• Fit the new sensor, secure with appropriate hardware, reconnect the plug, and reassemble trim.
• Perform a diagnostic scan and, if required, calibrate or initialise the lane-assist system with a suitable diagnostic tool to clear codes and confirm correct operation.

Why This Part Fails Most Often

Typical failure causes include corrosion and water ingress at connectors, mechanical damage from impacts, wiring or connector deterioration, and seized mounting screws due to rust. Environmental exposure and road debris accelerate wear. There is no fixed replacement interval—replace the sensor when fault codes appear or when lane-assist warnings are present.

Replacing a faulty AFIL sensor restores lane-monitoring performance, prevents warning lights and error codes, and ensures that the vehicle’s safety assists operate as designed. Keep the part numbers handy (9663116280 / 6590W1) to speed up ordering and verification in parts lists.

This AFIL (Lane Monitoring) sensor is an OEM-style replacement for selected Citroën and Peugeot models. Ideal For Professional Workshops And Experienced DIYers, It Carries Key Part References (9653381180, 6590W1) Often Used When Searching Online Or In Parts Catalogs. The Sensor Monitors Lane Position And Feeds Data To The Driver Assistance System; Replacing A Faulty Unit Restores Reliable Lane Keeping Alerts And Helps Clear Related Fault Codes.

Designed For Direct Fitment Where The Mounting And Electrical Connector Match Factory Locations. Typical Uses Include Repair After Impact, Water Ingress, Or Electrical Connector Corrosion. Listing Commonly Used Part Numbers In The Description Improves Searchability And Makes It Easier For Technicians To Find The Correct Component.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën C5 X7; Citroën C6; Peugeot 308; Peugeot 407
• Product Codes: 9653381180; 603.013; 6590W1
• Other Numbers: 6590W1 | 9653381180

Installation Recommendations

Follow Safe Workshop Practice And Use Proper Tools. Recommended Steps For Replacement:

1. Disconnect The Battery Before Starting To Avoid Short Circuits Or Unwanted Airbag/ECU Messages.
2. Remove The Wheel Arch Liner Or Trim To Access The Sensor Mounting Point.
3. Unplug The Electrical Connector And Inspect For Corrosion Or Damaged Pins.
4. If The Fixing Screw Is Seized, Apply Penetrating Oil And Attempt To Remove. If The Screw Is Fully Seized, Carefully Drill Or Extract The Fastener While Protecting The Surrounding Plastic And Wiring.
5. Fit The Replacement Sensor Using Original Fasteners Or Suitable Replacements. Tighten Fasteners To Manufacturer Recommendations.
6. Reconnect The Connector, Refit The Wheel Arch Liner, Reconnect The Battery.
7. Clear Fault Codes And, If Required, Perform A System Check Or Recalibration With A Diagnostic Tool To Ensure Proper Operation Of The Lane Keeping System.

Most Common Causes Of Failure

• Corrosion And Seized Fixings: Road Salt And Moisture Often Cause The Mounting Screw To Seize, Making Removal Difficult.
• Water Ingress Or Connector Corrosion: Moisture Can Cause Intermittent Electrical Faults Or Complete Loss Of Signal.
• Physical Damage: Impacts From Road Debris Or Minor Collisions Can Misalign Or Damage The Sensor Unit.
• Wiring Harness Damage: Abrasion Or Broken Wires Between The Module And The ECU May Trigger Faults.
• Environmental Wear: Long-Term Exposure To Salt, Dirt, And Vibration Reduces Component Reliability.

For Workshop Efficiency: Keep Replacement Part Numbers To Hand (9653381180, 6590W1), Inspect The Connector And Harness During Installation, Use Penetrating Fluid For Seized Screws, And Always Verify System Operation With A Diagnostic Tool After Fitting.

This AFIL (lane monitoring) sensor is a direct-fit replacement part commonly used on a range of Citroën and Peugeot models. It monitors lane position to support lane-departure warning and lane-keeping assistance functions within the vehicle’s ADAS suite. The unit is frequently searched under part numbers 9659847580 and 6590W1, making it easy to find for workshops and DIY mechanics looking for a precise match.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën C5 X7; Citroën C6; Peugeot 308; Peugeot 407
• Product Codes: 9659847580, 6590W1
• Other Numbers: 603.015

Installation Recommendations

Before starting, isolate the vehicle electrical system by disconnecting the negative battery terminal. Access to the AFIL sensor is typically gained via the wheel-arch liner or lower bumper trim depending on model. Remove the trim fasteners and locate the sensor housing. Unplug the electrical connector and remove the mounting fasteners. Be aware that the original mounting screw can be seized or corroded; in that case it may need to be drilled out as noted in the original report. Install the new sensor, secure with appropriate fasteners, reconnect the plug, refit the trim and reconnect the battery. After replacement, perform ADAS calibration or sensor alignment according to manufacturer requirements — many lane monitoring systems require calibration to ensure correct operation.

Most Common Cause Of Failure

Failures most often result from water ingress and corrosion of the connector or housing, mechanical damage from road debris or minor collisions, and electrical faults at the plug or wiring. Corroded or seized mounting hardware is a frequent issue where the sensor is attached to inner fenders or brackets, which can make removal more difficult and require drilling out fasteners. There is no fixed replacement interval; parts commonly fail after impacts, long-term exposure to moisture, or when connectors become oxidized.

For technicians and competent DIY mechanics: when sourcing this part, search by the listed product codes (9659847580, 6590W1, 603.015) and verify fitment against the vehicle model and production year. Proper installation and post-fitment calibration are key to restoring full lane monitoring functionality.

This AFIL (Lane Departure Monitoring) sensor is a direct replacement part commonly referenced by OE numbers 9647742280 and 6590W1. It is designed for workshops and DIY mechanics who service Citroën and Peugeot vehicles and need a reliable, searchable reference by product code. Use keywords such as AFIL sensor, lane keeping sensor, 9647742280, and 6590W1 when locating the part for quick match with vehicle compatibility lists.

The sensor’s role is to monitor the vehicle’s position relative to lane markings and supply information to lane-keeping and lane-departure warning systems. A correctly functioning AFIL sensor is essential for the proper operation of driver assistance features that help prevent unintentional lane departure.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën C5 X7; Citroën C6; Peugeot 308; Peugeot 407
• Product Codes: 9647742280; 603.011; 6590W1
• Additional Numbers: 6590W1; 9647742280

Replacement And Installation Notes

Typical replacement steps for a qualified mechanic or experienced DIYer:

• Disconnect the negative battery terminal before starting electrical work.
• Access the sensor—it is commonly mounted near the wheel arch or inner fender; remove the wheel and inner wheel arch liner if required to reach the unit.
• Unplug the electrical connector and remove the securing screw(s). Note: The mounting screw can be seized or corroded; penetrating oil and careful extraction are often needed. In some cases the screw must be drilled out as noted above.
• Fit the replacement sensor, secure mounting hardware, reconnect the plug, and replace any removed trim or liners.
• After installation perform system initialization or calibration with an appropriate diagnostic tool according to manufacturer procedure to ensure correct lane-detection alignment.

Installation Recommendations

• Use penetrating lubricant on corroded screws and allow time to soak in before attempting removal.
• Protect plastic trim and wiring when using power tools for screw extraction or drilling.
• Inspect the connector for corrosion or bent pins; clean and apply dielectric grease to protect against moisture.
• Replace any damaged clips or fasteners to avoid vibration or misalignment after fitment.
• Carry out a diagnostic check and calibration after installation to confirm system operation.

Why This Part Fails

Common causes of AFIL sensor failure include moisture ingress and corrosion, physical impact from minor collisions or road debris, connector and wiring damage, and long-term degradation from road salt and harsh environments. In many cases the mounting screw corrodes or seizes to the bodywork, which complicates removal and leads to the note about potentially needing to drill out the fastener.

Practical Tips For Mechanics

• Search by OE numbers 9647742280 or 6590W1 to quickly find compatible replacements.
• When replacing the sensor, verify wiring integrity and secure mounting to avoid false warnings or degraded performance.
• Keep a small selection of replacement fasteners and clips on hand—these are frequently damaged during access.

Suitable For: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407. Use the provided product codes to confirm fitment in parts catalogs and service manuals.

Product Overview

This AFIL (Lane Departure Monitoring) sensor number 2 is a genuine-styled component suitable for selected Citroën and Peugeot models. It monitors lane-keeping and lane-departure functions and communicates with the vehicle’s driver-assistance systems. Supplied under reference numbers commonly searched by workshops and DIYers, the unit is a direct-replacement type designed for fast identification and fitment.

Key Benefits

• Direct fit for compatible Citroën and Peugeot models — easy to identify by OEM codes 9653381080 and 6590W1.
• Restores lane-departure monitoring performance when original sensor is faulty or damaged.
• Targeted at professional mechanics and experienced DIY repairers who search by part number.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Product Codes: 9653381080, 6590W1
• Other Numbers: 603.012

Installation Recommendations

Before starting, park the vehicle on level ground and work in a dry, well-lit area. Disconnect the battery when handling electrical connectors. Typical replacement steps:

1. Remove the inner wheel-arch liner or access panel to reach the sensor mounting point.
2. Disconnect the electrical connector and free any retaining clips or wiring harnesses.
3. If the mounting screw is seized (a common issue), drill out the screw carefully and remove the housing from the bracket.
4. Install the new sensor, replace any corroded fasteners, reconnect the wiring and secure the wheel-arch liner.
5. Reconnect the battery and clear any stored fault codes with a diagnostic tool; check the lane-assist function and perform any required ADAS/ camera recalibration if the vehicle or system requests it.

Use anti-seize or replacement stainless fasteners where appropriate and avoid stressing wiring. If in doubt about calibration, consult a diagnostic specialist — correct alignment ensures reliable lane-detection performance.

Why This Part Commonly Fails

Failures are usually related to environmental and mechanical factors rather than electronic design. Typical causes include:

• Corrosion and water ingress from road salt and moisture leading to connector or housing damage.
• Physical impact from debris or minor collisions that misalign or damage the unit.
• Seized mounting screw(s) due to rust — often requiring drilling out the fastener to remove the old unit.
• Wiring abrasion or connector faults caused by movement of the wheel-arch liner or neglected repairs.

Notes For Buyers

This sensor is commonly searched by its OEM references (9653381080, 6590W1). It is intended for workshops and competent DIY mechanics familiar with ADAS components; correct installation and, where necessary, recalibration will restore proper lane-monitoring function.

The AFIL (lane-keeping/lane-departure) sensor is a direct-fit replacement part frequently searched by part numbers 9659847380 and 6590W1. Designed for Stellantis group vehicles, this sensor monitors lane position and provides input to the lane-keeping/driver-assist systems. Ideal for professional workshops and DIY mechanics, the unit is a common replacement when lane-assist warnings appear or when the system reports a sensor fault. Including OE reference numbers in your search will increase the chance of finding the correct unit quickly.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Product Codes: 9659847380, 6590W1, 603.013
• Other Numbers: 9659847380 | 6590W1

Installation Recommendations

Before starting, Disconnect The Battery To Avoid Short Circuits. Access Typically Requires Removal Of Interior Trim Or Under-Wheel-Arch Covers To Reach The Sensor Unit. Carefully Unplug The Electrical Connector And Remove Mounting Fasteners. Note That The Screw Securing The Unit To The Wheel Arch Can Be Seized; In Such Cases Drill-Out Or Careful Extraction May Be Necessary. Check Connector Pins For Corrosion, Clean Mating Surfaces, And Apply Dielectric Grease To Prevent Future Moisture Ingress. After Mechanical Fitment, The System Usually Requires Recalibration Or A Fault Code Clear Using Manufacturer Diagnostic Equipment. If You Are Unsure, Have Calibration Performed By A Workshop With Appropriate Diagnostic Tools.

Why This Part Fails Most Often

Common Causes Of Failure Include Physical Impact (Bumper Or Minor Collision), Moisture Ingress Leading To Corrosion Of Contacts, Wiring Or Connector Damage, And Seized Mounting Screws Due To Rust. Electronic Faults Can Also Arise From Water Penetration Or Long-Term Vibration. Failures Often Present As Lane-Assist Warnings, Intermittent Operation, Or Permanent Fault Codes From The Vehicle’s Driver-Assistance System.

Buying tip: Search Using The OE Numbers 9659847380 Or 6590W1 When Looking For Direct Replacements For Citroën And Peugeot Models To Ensure Compatibility.

This AFIL (Lane Departure) sensor is an OEM-type electronic component used on a range of Citroën and Peugeot models to monitor lane-keeping functions and support the driver assistance system. Designed for professional fitment by mechanics and experienced DIYers, the unit matches common Stellantis part references and is often searched for by its product codes (9659847480, 6590W1). The compact sensor mounts to the vehicle body and communicates with the vehicle’s safety electronics to detect lane departure conditions and trigger warnings or interventions.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: AFIL Sensor Number 4
• Product Codes: 9659847480, 6590W1
• Additional Numbers: 603.014
• Compatible Vehicles: Citroën C4, Citroën C4 Picasso, Citroën C5 (including C5 X7), Citroën C6, Peugeot 308, Peugeot 407

Installation Recommendations

Before starting work, park the vehicle on a level surface and isolate the battery to avoid accidental short circuits. Typical replacement steps:

• Remove the relevant wheel arch liner or inner trim to access the sensor mounting point.
• Disconnect the electrical connector and inspect pins for corrosion or damage.
• If the mounting screw is seized to the wheel arch, carefully drill or extract the screw; use penetrating oil and the correct drill/extractor tools to avoid damaging the housing or bodywork.
• Fit the new sensor, use new fasteners if the original is damaged, and secure with appropriate torque and anti-seize where advisable.
• Reconnect the electrical connector and reassemble trim. Clear any stored fault codes with an OBD scanner and perform a system check. A software reset or calibration may be required depending on the vehicle’s driver assistance system.

Why The Part Most Often Fails

• Corrosion And Water Ingress: Exposure to road salt and moisture can corrode connectors and internal electronics.
• Impact Damage: Bumper or wheel-arch impacts from minor collisions or curb strikes can physically damage the sensor or its mounting.
• Seized Fasteners: The mounting screw can seize to the body panel over time, making removal difficult and sometimes damaging the housing during extraction.
• Wiring And Connector Issues: Broken wires, crushed insulation, or poor electrical contact cause intermittent faults or complete failure.

Fitment And Replacement Notes

This sensor is not typically a scheduled wear item; failures are usually related to external damage or environmental exposure. When replacing, inspect surrounding wiring, harness routing, and connectors. Keep a record of fault codes before replacement and verify the lane-assist function after installation. If the original mounting screw is seized, plan to replace the fastener and treat the new threads to prevent future seizure.

Suitable For Mechanics And Skilled DIYers: The part is intended for technicians comfortable with body-trim removal, electrical connectors and basic diagnostics. Having an OBD scanner or diagnostic tool will speed up fault clearing and verification after installation.

High-quality AFIL lane monitoring sensor designed for Citroën and Peugeot models. This unit restores the lane departure warning functionality and supports ADAS safety features. Ideal for professional garages and DIY mechanics who need a reliable replacement part identified by common product numbers (e.g. 9663116180, 6590W1).

Function

The AFIL sensor monitors lane markings and supplies input to the lane departure warning system. Proper operation helps the vehicle detect unintentional lane drift and provide driver warnings or corrective assistance, improving active safety on the road.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Product Codes: 9663116180
• Additional Numbers: 603.011, 6590W1

Installation Recommendations

• Access: Remove the wheel and the wheel-arch liner or splash guard to reach the mounted unit.
• Removal: Disconnect the electrical connector, remove the mounting fastener(s). If the mounting screw is seized, drill or carefully extract the screw as required.
• Fitting: Fit the new sensor, secure mounting hardware to the correct torque, and reconnect the electrical connector ensuring clean contacts.
• Commissioning: Clear related fault codes and verify system messages. Sensor may require alignment, coding, or calibration using a diagnostic tool depending on the vehicle’s ADAS setup.
• Tips: Protect connectors from contamination, avoid bending or straining wiring harnesses, and check surrounding components for damage after impact.

Why This Part Commonly Fails

• Seized Mounting Screw: Corrosion often causes the screw that secures the unit to the wheel arch to seize — a frequent workshop observation requiring drilling out the old fastener.
• Corrosion And Water Ingress: Exposure to road salt, moisture, and debris can corrode contacts and compromise the sensor electronics.
• Mechanical Damage: Impacts from road debris or minor collisions can damage the sensor housing or mounting, affecting performance.
• Electrical Issues: Connector corrosion, damaged wiring, or poor grounding may cause intermittent faults or complete failure.

Choose this AFIL sensor when you need an exact-fit replacement identified by OE numbers like 9663116180 or 6590W1. Suitable for both workshop professionals and competent DIY mechanics who can perform removal, replacement, and necessary diagnostic checks. Replacing a faulty lane monitoring sensor restores ADAS functionality and contributes to safer driving.