Description
Sunlight sensor for Citroën and Peugeot vehicles
Product Overview
This sunlight sensor (part number 6445VA) is designed for Citroën and Peugeot vehicles and is used by mechanics and DIY enthusiasts looking to restore correct automatic climate control operation. Listed under Stellantis Citroën Peugeot references, the sensor provides reliable input to the HVAC system to adjust fan speed and temperature based on solar radiation. Many customers search directly for the code 6445VA when replacing this component.
Function
The Sunlight Sensor Measures Solar Irradiance That The Vehicle’s Climate Control Uses To Compensate Cabin Temperature. The Sensor Helps The HVAC System Adjust Fan Speed, Blend Doors Or Temperature Setpoints To Maintain Comfort Under Direct Sunlight. It Does Not Control Air Conditioning Compressor Operation Directly But Improves Automatic Regulation And Passenger Comfort.
Compatibility And Fitment
Common Fitment: Citroën C5, Peugeot 407. The part is typically mounted on the top of the dashboard near the windshield to measure incoming sunlight unobstructed. When searching for replacements, use part number 6445VA to identify matching units for these models.
How To Replace
Basic Replacement Steps (General Guide For Experienced Mechanics/DIY):
- Disconnect The Negative Battery Terminal Before Starting Electrical Work.
- Remove The Dashboard Trim Or Sensor Cover Located Near The Base Of The Windshield. Use Trim Tools To Avoid Damage.
- Unscrew Or Unclip The Old Sensor, Carefully Release The Electrical Connector And Remove The Unit.
- Install The New Sensor In The Same Orientation, Reconnect The Connector And Secure With Screws Or Clips.
- Reassemble The Trim, Reconnect The Battery And Verify HVAC Operation. In Most Cases The Sensor Is Plug-And-Play And No Coding Is Required.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5; Peugeot 407
- Product Codes: 6445VA
- Other Numbers: NFP
Installation Recommendations
Work Carefully With Interior Trim To Avoid Breakage. Ensure The Sensor Faces The Windshield Without Obstructions (No Tinted Film Or Debris Covering Its Window). Use Correct Trim Tools And Avoid Pulling On Wiring. After Installation, Check That The HVAC System Responds To Changing Light Conditions; If Irregularities Persist, Inspect Wiring, Connectors And Fuses.
Most Common Failure Reasons
Failures Occur Mainly Due To Water Ingress, Connector Corrosion, Wiring Damage, Prolonged UV Exposure Or Internal Electronic Degradation. Symptoms Of A Faulty Sunlight Sensor Include Incorrect Automatic Climate Control Behavior, Overactive Or Underperforming Fan Speed Under Sunlight, Or Diagnostic Fault Codes Related To HVAC Sensors.
Search Tip
When Looking For This Part Online Or In Catalogs, Use The Part Number 6445VA And The Vehicle Models Citroën C5 Or Peugeot 407 To Improve Search Accuracy.
