Description
Overview
The BEHR Heater Servo Motor (EAD515 / P2861001U B 44 647947) is a direct-fit HVAC actuator for Citroën C5 X7 and Peugeot 407 facelift vehicles. Designed for professional workshops and competent DIY mechanics, this servo controls heater and ventilation flaps to regulate cabin temperature and airflow distribution.
Function And Common Failure Symptoms
This servo motor drives the internal gears that position blend doors and airflow flaps inside the heater box. When functioning correctly it ensures accurate temperature mixing and correct air distribution. Typical symptoms of a failing unit include inconsistent cabin temperature, incorrect airflow direction, audible clicking or grinding noises from behind the dash, and sporadic HVAC operation. Failures are most often caused by worn plastic gears, motor wear, or moisture penetration into the actuator housing.
Replacement Guide
Replacement is straightforward for experienced technicians. General steps:
- Disconnect the negative battery terminal to prevent electrical shorts.
- Gain access to the HVAC housing (glovebox or lower dash trim removal is commonly required).
- Unplug the electrical connector and remove the mounting screws securing the servo motor.
- Fit the new BEHR servo motor, secure the fasteners and reconnect the electrical plug.
- Reconnect the battery, cycle the HVAC controls and verify correct operation; some vehicles may require actuator calibration or a reset via diagnostic tool.
Maintenance & Longevity
Actuators can last many years but may fail with age, prolonged high mileage, or exposure to condensation and temperature cycling. If you notice intermittent behavior or mechanical noise, replacing the servo early prevents further HVAC system issues. Always confirm compatibility by matching the part number before installation.
Technical Information
- Manufacturer: BEHR
- Model: Citroën C5 X7; Peugeot 407 Facelift
- Product Codes: EAD515, P2861001U, B 44, 647947
- Other Numbers: B 44, 647947
