Description
Heating Servo Motor for CITROËN C4 and PEUGEOT 307 II Vehicles.
This is a used heating servo motor (blower/actuator) suitable for Stellantis vehicles, commonly referenced under codes EAD511 / H1961 b / 6447VA and manufactured by BEHR. Designed for climate and heating systems on Citroën C4 and Peugeot 307 II, this servo motor controls heater flaps and airflow distribution inside the HVAC unit. The part is popular among professional mechanics and DIY enthusiasts and is often searched by its product code—entering the reference number speeds up finding the correct replacement.
Function
The servo motor operates the HVAC blend and distribution flaps to regulate cabin temperature and airflow direction. It receives commands from the climate control module and moves internal plastic gears and linkages to position flaps precisely. Proper flap movement ensures consistent heating, cooling, and defogging performance.
How It Is Replaced
- Disconnect the battery before starting work to avoid electrical short circuits.
- Access the servo motor—usually located behind the dashboard or under the glovebox in the HVAC housing. Remove trim panels and the glovebox for better access if required.
- Unplug the electrical connector and remove the mounting screws securing the actuator.
- Swap the old unit with the replacement, secure screws, reconnect the electrical plug and reassemble panels.
- Reconnect the battery and verify correct operation by running the HVAC through all modes and temperatures; listen for smooth movement and check flap response.
Installation Recommendations
- Always disconnect the battery before disassembly and follow the vehicle manufacturer’s removal and installation procedures to prevent damage.
- Inspect connector pins and wiring for corrosion or damage; clean contacts if necessary before connecting the new unit.
- Ensure flaps move freely inside the HVAC box—foreign objects or broken linkages must be cleared or repaired to avoid premature failure of the new actuator.
- Test the unit across all HVAC settings after installation to confirm full range of motion and quiet operation.
- For complex dashboard removal or vehicles with integrated climate modules, consider professional installation.
Why It Fails Most Often
- Plastic Gear Wear Or Stripping: Repeated movement and age can wear teeth or cause gears to strip, producing clicking noises and loss of movement.
- Moisture And Corrosion: Condensation or water ingress can corrode motor brushes and electrical contacts, leading to intermittent operation or failure.
- Motor Burnout: Over time, the small DC motor can degrade and lose torque, especially if obstructed or overloaded by damaged flaps.
- Mechanical Obstruction: Foreign objects, broken flap linkages or sticky HVAC components can overload the actuator and cause premature failure.
Technical Information
- Manufacturer: BEHR
- Model: Citroën C4; Peugeot 307 II
- Product Codes: EAD511; H1961 b; 6447VA
- Additional Numbers: Stellantis references associated with above codes
Suitable For
Designed for Citroën C4 and Peugeot 307 II HVAC systems. Often cross-referenced by the product codes listed above—searching by these references helps mechanics and DIY customers find the correct replacement quickly.
Practical Tips
- When replacing the servo motor, check neighboring actuators and the condition of the HVAC box—replacing a single failed actuator while others are worn may result in repeat visits.
- Keep a clean work area and label removed screws and clips for smooth reassembly.
