Description
Heating Servo Motor BEHR Or MES For Citroën And Peugeot Vehicles
High-quality replacement heating servo motor designed for Citroën and Peugeot HVAC systems. This servo (actuator) is commonly used in Stellantis vehicles and is compatible with a range of models including Citroën C4, C5 II, C6 and Peugeot 307 (including successive series). Supplied with references 309370600 and 6447RX, the unit is manufactured to match the original fit, mounting points and electrical connector layout, making it suitable for professional workshops and skilled DIYers who perform HVAC repairs.
Function And Benefits
The heating servo motor controls the position of blend/airdoors inside the HVAC box to regulate cabin temperature and airflow distribution. A properly functioning servo ensures precise temperature mixing, correct recirculation/demist settings and quiet operation. Replacing a faulty actuator restores accurate climate control responses and eliminates symptoms such as incorrect temperature, unusual noises from the dash or stuck vent positions.
Technical Information
- Manufacturer: BEHR / MES
- Model: Compatible With Citroën C4, C5 II, C6; Peugeot 307 (And Related Variants)
- Product Codes: 309370600, 6447RX, 6447.RX
- Additional Numbers: Stellantis References Displayed As CE CD AD (As Marked On Some Units)
Installation Recommendation
Fitment typically requires access to the HVAC box behind the dashboard or behind the glovebox depending on model. Common installation steps:
- Disconnect Battery Before Work To Avoid Short Circuits And Fault Codes.
- Remove Glovebox Or Lower Dash Trim To Access The HVAC Unit.
- Unplug Electrical Connector And Remove Retaining Screws Or Clips Holding The Servo.
- Install Replacement Servo Ensuring Proper Engagement With The Blend Door Shaft Or Gears.
- Reconnect Connector, Reassemble Trim And Reconnect Battery.
- Cycle HVAC Controls To Verify Correct Door Movement And Temperature Regulation. If Required, Perform Any HVAC Recalibration Procedures Specified By The Manufacturer.
Why This Part Fails
Typical causes of failure are gearbox wear (plastic gears stripping), motor winding failure, excessive friction on the blend door linkage and ingress of moisture or debris. Symptoms include grinding or clicking noises from the dashboard, incorrect or fixed temperature output, delayed or erratic door movement, and fault codes related to HVAC position sensors. Age, repeated use and heat exposure accelerate wear of internal plastic gears and motor brushes.
Notes For Professionals And DIYers
- Keep The Work Area Clean To Avoid Introducing Debris Into The HVAC Box.
- Inspect Linkages And Door Shafts For Free Movement Before Installing The New Servo.
- If The Old Unit Shows Evidence Of Water Damage, Check HVAC Drainage And Cabin Seals To Prevent Repeat Failures.
- Use The Listed Product Codes (309370600, 6447RX) When Searching For Or Ordering Replacement Parts To Ensure Correct Fitment.
Compatibility And References
Often referenced under Stellantis parts lists and found on Citroën and Peugeot models from the same HVAC platforms. Always compare connector shape, mounting points and code numbers (309370600 / 6447RX) with the original unit before purchase.
