Description
Heating servo motor for CITROËN C4 and PEUGEOT 307 II. BEHR HVAC motor reducer.
High-quality replacement heating servo motor (heater actuator) designed for Citroën C4 and Peugeot 307 II climate systems. Manufactured by BEHR, this robust motor reducer provides precise control of the blend/airflow doors in the HVAC box to deliver reliable cabin temperature regulation. Ideal for professional workshops and DIY mechanics searching by product code (H1959 U b 42, EAD512, 6447RZ / 6447RF), this part restores proper HVAC function, eliminating issues such as incorrect temperature, noisy actuator movement, or stuck blend doors.
Key Benefits
Reliable operation and direct fit for the specified Stellantis models. Optimized for durability and smooth movement of the HVAC flaps, reducing cabin comfort complaints and repeat visits. Clear product references help fast identification and ordering.
Applications
- Citroën C4 (models equipped with compatible HVAC system)
- Peugeot 307 II (models equipped with compatible HVAC system)
Technical Information
- Manufacturer: BEHR
- Model: Heating Servo Motor / HVAC Motor Reducer
- Product Codes: H1959 U b 42, EAD512
- Additional Numbers: 6447RZ, 6447RF
Installation Recommendations
Designed for straightforward replacement but requires careful handling. General installation steps:
- Disconnect the vehicle battery before starting work to avoid short circuits or damage to the electrical system.
- Access the HVAC unit (typically behind the glovebox or lower dash panel). Remove the necessary trim pieces to reach the actuator.
- Unplug the electrical connector and remove mounting screws securing the actuator to the HVAC housing.
- Fit the new actuator, ensuring correct engagement with the blend/air flap gear, secure screws, and reconnect the electrical connector.
- After installation, cycle the climate controls through full range to allow initial positioning; if available, perform calibration or adaptation via diagnostic tool for precise alignment.
Why This Part Fails
Common failure modes for heating servo motors include worn or stripped plastic gears, motor burnout due to age or overload, water/moisture ingress causing corrosion, and connector or wiring faults. Symptoms of a failing unit are noise during flap movement, inability to change temperature or airflow distribution, and intermittent operation.
Notes For Mechanics
When replacing the actuator, verify smooth mechanical movement of the HVAC flaps and check for detached or broken gear teeth on the flap mechanisms. In case of recurring failures, inspect the HVAC housing for foreign objects and the electrical supply for voltage drops or intermittent connections.
Compatibility And Ordering Tips
Customers often search by product code: include H1959 U b 42, EAD512, 6447RZ or 6447RF when checking fitment. Confirm physical match with the original actuator (connector position, mounting points, and gear coupling) before installation.
