Description
BEHR heating and air conditioning control for PEUGEOT 307 II. Hardware 4.3, 4.4 and 4.5. Software 5.0.
This genuine-style BEHR HVAC control unit is designed for Peugeot 307 II models and is commonly referenced by part numbers such as 9646627977, 6451ZP, 6451ZN, 6451SN and 98001291XT. The unit manages climate functions including temperature regulation, fan speed, air distribution and air conditioning request, providing reliable cabin comfort control. Ideal for professional workshops and experienced DIY mechanics who search by product code or vehicle model, this control gives a direct replacement option for vehicles fitted with the listed hardware/software versions.
Function And Application
The Control Unit Operates The Vehicle Climate System By Processing User Inputs (Knobs/Buttons) And Controlling Outputs Such As Blower Motor Speed, AC Compressor Request, Recirculation Flap And Air Distribution Actuators. It Also Interfaces With Vehicle Sensors To Maintain Desired Cabin Temperature. Intended For Peugeot 307 II Vehicles Equipped With The Specified BEHR Hardware (4.3 / 4.4 / 4.5) And Software 5.0.
How Replacement Is Performed
Typical Replacement Steps (Skilled Technician Or Experienced DIY):
- Disconnect Battery Before Starting Work.
- Remove Trim Panels And Dashboard Fascia Surrounding The Climate Unit.
- Unscrew Mounting Fasteners And Carefully Pull Unit Forward.
- Disconnect Electrical Connectors And Remove The Old Unit.
- Install Replacement Unit, Reconnect Connectors, Refit Fasteners And Trim.
- Restore Battery Power And Verify All Functions: Fan Speeds, Temperature Control, AC Engagement, Recirculation And Display/Backlight.
Installation Recommendations
Always Disconnect The Battery Before Removing The Unit. Inspect Electrical Connectors For Corrosion Or Damaged Pins And Clean Before Reconnection. Handle The PCB And Connectors Carefully To Avoid Static Damage. After Installation, Run A Full Functional Check Of All Climate Modes And Fan Speeds; Where Applicable, Allow The Vehicle To Perform Any Self-Calibration Cycles For Blend Doors. If The Original Unit Showed Water Ingress, Confirm And Clear The HVAC Drain To Prevent Recurrence.
Most Common Causes Of Failure
Common Faults Include Worn Or Faulty Control Potentiometers/Encoders, Failed Internal Solder Joints Causing Intermittent Contacts, Water Or Moisture Ingress Leading To Corrosion, Damaged Connectors, Or Failed Backlight/Display Elements. These Issues Usually Develop Over Years Of Use Or After Water Intrusion Into The HVAC Housing.
Technical Information
- Manufacturer: BEHR
- Model: Peugeot 307 II
- Product Codes: 9646627977, 6451ZP, 6451ZN, 6451SN
- Other Numbers: 98001291XT
Notes For Mechanics And DIY Enthusiasts
This Unit Is Frequently Searched By Part Number — Include The Codes Shown Above When Looking Up Fitment. While The Unit Replaces The Original Control Mechanically And Electrically In Most Cases, Always Verify That The Hardware/Software Version Is Compatible With The Vehicle’s Installed System (Hardware 4.3 / 4.4 / 4.5, Software 5.0). For Vehicles With Prior Water Damage, Address The Underlying Cause To Avoid Repeating Failures.
Order This BEHR Climate Control Unit If You Need A Direct Replacement For Peugeot 307 II Models Referenced By The Above Numbers — Designed To Restore Full HVAC Functionality And Cabin Comfort.
