Description
Sunlight Radiation Sensor For Citroën And Peugeot Vehicles
This Sunlight Radiation Sensor (solar sensor) is designed for Citroën and Peugeot vehicles and helps the automatic climate control measure incoming solar radiation to maintain cabin comfort. Ideal for workshops and DIY mechanics, this direct-fit sensor restores correct temperature compensation by the HVAC system, preventing overcooling or overheating caused by changing sunlight conditions. Searchable by part number 6445VA, the sensor is a commonly replaced component on affected Stellantis models.
Key Features And Benefits
- Direct Fit For Citroën And Peugeot Models: Compatible With Vehicles That Use Part Number 6445VA, Including Citroën C5 And Peugeot 407.
- Restores Accurate Climate Control: Measures Solar Radiation To Allow The HVAC Unit To Adjust Blower And Temperature Setpoints Automatically.
- Easy Replacement For Workshops And DIYers: Compact, Dashboard-Mounted Sensor That Reinstates Proper Sunload Compensation.
- Improves Passenger Comfort And HVAC Efficiency: Reduces Unnecessary Air Conditioning Operation And Helps Maintain Stable Cabin Temperature.
- Search-Optimized Keywords: Sun Sensor, Solar Sensor, Sunload Sensor, Climate Control Sensor, 6445VA.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C5; Peugeot 407
- Product Codes: 6445VA
- Additional Numbers: NFP
Installation Recommendations
Replacement is typically straightforward and suitable for experienced DIYers and professional technicians. General steps:
- Locate The Sensor On Top Of The Dashboard Near The Windshield (Passenger Side Or Central Dash Area Depending On Model).
- Carefully Remove Dashboard Trim Or Retaining Cover To Access The Sensor.
- Disconnect The Electrical Connector And Remove Any Fasteners Securing The Sensor.
- Install The New Sensor, Reconnect The Connector, And Reassemble Trim Panels.
- Verify Proper Operation By Observing Climate Control Response To Direct Sunlight; Follow Vehicle-Specific Service Manual For Any Required Adaptation Procedures.
Why This Part Most Often Fails
Solar sensors are exposed to prolonged sunlight, heat, and temperature cycling, which can degrade the internal photodiode or electronics over time. Common failure causes include:
- Age-Related Degradation From UV And Heat Exposure.
- Moisture Ingress Or Condensation Causing Corrosion Or Short Circuits.
- Connector Corrosion Or Broken Wiring At The Plug.
- Physical Damage From Impact Or During Interior Repairs.
Symptoms Of A Faulty Sensor
- Incorrect Cabin Temperatures Despite HVAC Settings.
- Automatic Climate Control Overcooling Or Overheating When Sunlight Changes.
- Unstable Or Erratic Climate System Behavior Linked To Sunload Compensation.
Replacing the faulty sun sensor with the correct part number (6445VA) typically restores proper solar compensation for the automatic climate system and returns predictable cabin comfort. Follow safe working practices when accessing dashboard components and consult the vehicle repair manual for model-specific instructions.
