Description
Lane driving sensor AFIL number 2 for CITROEN PEUGEOT
cars
There may be a broken screw that holds the unit to the undercarriage – must be unscrewed
Part description
The AFIL sensor (lane monitoring sensor) is part of a system that evaluates driving in a lane and cooperates with the car’s electronics. This particular part is listed as AFIL sensor 2 and is intended for Citroën/Peugeot cars.
The advantage of searching by part number is the quick identification of the correct piece – in practice, the most common comparison is the matching of product codes directly on the part. The documents also contain a practical warning: the screw holding the unit to the undercarriage may be cracked, so drilling may be necessary during disassembly/assembly.
Technical information
- Manufacturer: Stellantis
- Model: Citroën C4; Citroën C4 PICASSO; Citroën C5; Citroen C5 X7; Citroën C6; Peugeot 308; Peugeot 407
- Other numbers: 603.012
Product codes
- Product codes: 9653381080, 6590W1
Installation recommendations
Generally/typically for this type of electrical sensor, the exact procedure may vary depending on the specific model and make of the car. Below is a practical procedure aimed at safe replacement and minimizing the risk of damage to cabling or fixings.
1) Before assembly (checks of used part)
- Compare the codes on the part with the old part: 9653381080, 6590W1 (possibly also 603.012).
- Check the connector (locking latch, pins, oxidation) and the condition of the cable input to the sensor.
- Inspect the body of the sensor and the holder (cracks, deformation, traces of impact or overheating).
- Account for the fact that according to the documents the screw holding the unit may be notched – prepare for the drilling option.
2) Necessary tools and materials (in general)
- Basic set of ratchets/bits and screwdrivers
- Tools for removing plastic clips/upholstery
- Penetrating agent (for hardened joints)
- In the case of a cracked screw: suitable drills or a screw extractor
- Electrical contact cleaner
- Protective gloves and goggles (especially when drilling)
3) Step-by-step assembly procedure
- Secure the vehicle against movement and turn off the ignition.
- Disconnect the battery (recommended safety procedure for electrical parts).
- Get access to the sensor according to the specific design of the car (removal of covers/undercarriage, etc. – depending on the situation).
- Disconnect the electrical connector of the sensor: first unlock the latch, then pull the connector off without prying the cables.
- Unfasten the sensor. If the screw is stiff, use a penetrant and be careful not to damage the bracket.
- If there is a problem with the screw: according to the documents it may be notched – in that case it will be necessary to drill it out. Drill while protecting surrounding parts and wiring.
- Dismantle the old sensor and clean the mounting surfaces/holder (keep them dry and free of dirt).
- Before fitting, compare the codes again and visually verify that the connector and mount match.
- Place the new (used) sensor in the holder and fasten it.
- Connect the connector – it must fit clearly and be secured.
- Put back the removed covers/clips and check that nothing rubs and the wiring is not under tension.
- Connect the battery.
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4) Post-assembly checks and test drive/function verification
- Visually check that the sensor is firmly attached and the connector is properly secured.
- After turning on the ignition, watch for related system warnings.
- If you have diagnostics, perform a check of stored faults and a basic verification of system function (depending on the car’s capabilities).
- On a test drive, verify that the problem that caused the part to be changed does not return.
5) The most common assembly mistakes + how to avoid them
- Disconnecting the connector by the cables → always handle by the body of the connector, there is a risk of pulling out the wires.
- Screw pull/snap → use penetration, proper bit and adequate force; protect the surroundings when drilling.
- Poor locking of the connector → after clicking, do a light tensile test.
- Mechanical damage to the sensor during assembly → do not clamp the part in a vise by the body and do not hit it during handling in the undercarriage.
Reasons why the part is damaged
- Moisture and contact corrosion in a demanding operating environment (pollution, water, salt).
- Damage to wiring or connector (loose harness, pull on cables, poor securing).
- Mechanical stress – vibration, impact, deformation of the holder or surrounding parts.
- Incompetent disassembly/assembly leading to tearing/scratching of fasteners (possible cracked screw mentioned in the documents).
