Description
Heating Servo Motor For Citroën And Peugeot Vehicles. Replacement From Original Manufacturer Buhler.
Overview
This HVAC heater servo (servo motor) is a direct fit replacement designed for Citroën and Peugeot climate control systems. It restores precise flap movement in the heater box to ensure reliable temperature control and airflow distribution. Commonly searched by product codes EAM501, 951508Ua14 and 6447QN, this unit is suitable for professional workshops and DIY mechanics who expect OEM-fit quality.
Technical Information
- Manufacturer: Behr / Buhler
- Model: Citroën Xsara Picasso; Peugeot 307
- Product Codes: EAM501, 951508Ua14, 6447QN
- Additional Numbers: 6447QN, 951508UA14
Function
The actuator drives one or more flaps inside the heater/air-conditioning box to regulate cabin temperature and direct airflow to selected vents. Precise position feedback and smooth motion are essential for consistent climate control and to prevent HVAC system fault codes.
Compatibility And Notes
Fits selected Citroën and Peugeot models, notably Citroën Xsara Picasso and Peugeot 307, where the above product codes match. Many customers search by the code numbers; include them in your lookup to speed identification.
Replacement Guide
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electronics.
- Access The Heater Box — Typical Removal Requires Removing Glovebox Or Dashboard Trim To Reach The Actuator.
- Unplug The Electrical Connector And Remove Fasteners Holding The Actuator To The HVAC Unit.
- Swap The Unit, Making Sure Splines And Flap Positions Are Correctly Aligned — Do Not Force The Actuator Onto A Misaligned Shaft.
- Reassemble Trim, Reconnect The Battery And Verify Operation Through The Climate Control — Cycle Modes To Confirm Full Travel Of The Flap.
Installation Recommendations
- Always Disconnect The Battery And Follow Manufacturer Procedures To Prevent Damage To Electronics.
- Check Flap Free Movement Before Mounting The New Actuator; Debris Or Broken Mounts Can Impede Operation.
- Align Splines Correctly And Tighten Fasteners To Specified Torque — Avoid Overtightening Plastic Parts.
- After Installation, Cycle The HVAC Controls And Confirm There Are No Unusual Noises Or Error Messages.
- If The Vehicle Requires Initialization Of HVAC Actuators, Perform The Standard End-Stop Calibration Procedure As Described In Service Documentation.
Why This Part Fails Most Often
Failures Are Typically Caused By Worn Or Stripped Plastic Gears, Motor Or Potentiometer Wear, Water Or Condensation Ingress Into The Heater Box, Or Mechanical Binding Due To Debris. Symptoms Include Grinding Or Clicking Noises, Inaccurate Temperature Regulation, Stuck Flaps, Or Intermittent Operation.
Typical Symptoms
- Loss Of Temperature Control Or Inability To Reach Selected Cabin Temperature.
- Audible Clicking Or Grinding From Behind The Dashboard.
- Airflow Not Changing Direction According To Control Inputs.
- HVAC Fault Indicators Or Error Codes Related To Flap Position.
Search Tips
When Looking For This Part, Use Product Codes EAM501, 951508Ua14 Or 6447QN For Fast Matching. Including Vehicle Model (Citroën Xsara Picasso, Peugeot 307) In Your Search Improves Accuracy.
