AFIL sensor 4 Citroën Peugeot 9659847480 6590W1

Description

Lane driving sensor AFIL number 4 for CITROEN PEUGEOT
cars
There may be a broken screw that holds the unit to the undercarriage – must be unscrewed

Part description

This AFIL sensor (Lane Driving Sensor) is designed for selected Citroën and Peugeot cars. It is an electrical component from the category of sensors/detectors, which is searched mainly according to product numbers. If you are dealing with replacing a faulty AFIL sensor, correct number matching is key to a trouble-free replacement.

For this part, be aware that the screw that holds the unit to the undercarriage may be snapped – in which case it will need to be drilled out (see recommendations below).

Technical information

• Manufacturer: Stellantis (CITROËN / PEUGEOT)
• Model: Citroën C4, Citroën C4 PICASSO, Citroën C5, Citroen C5 X7, Citroën C6, Peugeot 308, Peugeot 407
• Other numbers: 603.014

Product codes

• Product codes: 9659847480, 6590W1

Installation recommendations

Generally/typically for this type of sensor, replacement requires careful inspection of connectors, mounting and wiring. The exact steps may vary depending on the specific car model.

1) Before assembly

• Compare with the old part: matching product numbers (9659847480, 6590W1), sensor body shape, connector pin type and number, mounting.
• Check the condition of the used part: cracks, damage to the connector, broken pins, oxidation.
• Check if the screw/screws are included; according to the documents, there may be a notched screw at the point of attachment to the wheel arch.

2) Necessary tools and materials

• Basic set of ratchets/bits and screwdrivers
• Tool for removing plastic upholstery/clips (pry bars)
• Penetrating agent (to release joints)
• Drill and drilling tool (if the screw is notched)
• Contact cleaner and possibly dielectric petroleum jelly (optional, depending on the condition of the connector)

3) Step-by-step assembly procedure

1. Turn off the ignition and, for safety reasons, disconnect the battery (typically the negative terminal).
2. Access the sensor – usually by removing the relevant cover/trim in the mounting area (specific access varies by car).
3. Disconnect the electrical connector: release the connector lock and pull the connector without prying the cables.
4. Check the wiring in the vicinity (abrasions, breaks, moisture in the connector) and, if necessary, clean the connector with a contact cleaner.
5. Undo the sensor fasteners.
6. If, according to the documents, the screw holding the unit to the undercarriage is cracked, proceed with caution: use a penetrating agent, or proceed to drilling out so as not to damage the surrounding parts.
7. Disassemble the old sensor and compare it with the replacement part (connector, mounting, markings/numbers).
8. Mount the new sensor in the holder/mount in the same position as the original part.
9. Tighten the fasteners appropriately so that the part fits correctly and is not under tension (without specifying torques).
10. Connect the connector – the fuse must click and the connector must not have play.
11. Put back all covers/panels and make sure the wiring is not chafed or pinched.
12. Connect the battery and perform a basic function check.

• 4) Post-assembly checks and test drive/function verification

  • Check that the part is firmly attached and the connector is properly secured.
  • Verify that there are no dropouts after driving (typically intermittent behavior may be connector/wiring related).
  • If you have diagnostics, perform a check of stored faults and basic functional tests according to system capabilities.

  5) The most common assembly mistakes + how to avoid them

  • Exchanging a part by appearance instead of by number: always verify that the codes 9659847480 and 6590W1 match.
  • Damage to the connector/pins when disconnecting: do not pull on the cables, always release the fuse.
  • Pinched wiring after mounting the covers: run the cables in the original routes and secure the clips.
  • Not solving a cracked screw with a careless procedure: when drilling, protect the surroundings and proceed slowly so as not to damage the attachment.

  Reasons why the part is damaged

  • Moisture and corrosion in the connector area (pin oxidation, poor contact).
  • Mechanical damage from dirt, stones or contact with surrounding parts.
  • Cabling damage (abrasion, pinching, breaking) leading to signal dropouts.
  • Incompetent disassembly/assembly – stripped threads, torn screws, cracked attachment or broken connector fuses.
  • Thermal and vibrational stress that weakens joints and contacts over time.