Description
Sunlight sensor for Citroën and Peugeot vehicles
This sunlight sensor (solar sensor) is designed for Citroën and Peugeot climate and comfort systems. It measures solar radiation intensity to help the automatic climate control and interior comfort systems regulate cabin temperature and sun compensation. Ideal for professional workshops and DIY mechanics who need a direct replacement part often searched under the part number 6445VA. The sensor is a compact, plug-and-play type unit that mounts on the dashboard near the windshield and communicates with the vehicle’s HVAC electronics to adjust blower speed and temperature distribution based on incoming sunlight.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C5, Peugeot 407
- Product Codes: 6445VA
- Additional Numbers: NFP
Installation Recommendations
Replacement is straightforward for experienced technicians and competent DIYers. Typical steps:
- Park on a flat surface, engage the handbrake and, for safety, disconnect the negative battery terminal if required by local workshop practice.
- Remove the dashboard top trim or the bezel covering the sensor location (usually clipped or fastened with a few screws).
- Unplug the sensor electrical connector, release any retaining clips, and remove the old sensor.
- Install the new sensor, secure it in place, reconnect the electrical connector and reassemble the trim pieces.
- Start the vehicle and verify HVAC automatic sun compensation functions correctly; check for fault codes and clear them if necessary.
In most cases the sensor is plug-and-play and requires no coding. Always follow the vehicle manufacturer’s removal and installation instructions and use appropriate trim tools to avoid damage to panels.
Why This Part Fails
- Age and UV Exposure: Prolonged exposure to sunlight can degrade the sensor’s optical elements or housing.
- Contamination: Dust, adhesive residue from dashboard covers, or detritus on the sensor lens reduces accuracy.
- Moisture Ingress and Corrosion: Leaks or poor sealing may cause connector corrosion or internal damage.
- Mechanical Damage: Impact or improper removal of dashboard trim can crack or dislodge the sensor.
- Electrical Faults: Wiring chafing, connector faults or intermittent connections can cause incorrect readings or loss of signal.
Notes for Buyers
Commonly searched by part number 6445VA. Ensure the sensor’s physical appearance and connector match your vehicle’s original unit when replacing. This part restores the automatic climate control’s ability to compensate for solar load and improve cabin comfort and energy efficiency.
