Description
Heater servo motor for Citroën C4 II and Peugeot 308 T7
This Valeo heater servo motor is a direct-fit HVAC actuator designed for Citroën C4 II and Peugeot 308 T7 models. It controls the movement of heater/ventilation flaps to regulate airflow direction and blend temperature inside the passenger compartment. The part is commonly searched by product codes such as T1009914P and 6479E7, making it easy for professional technicians and DIY enthusiasts to find the correct replacement.
Designed for workshops and competent DIY mechanics, this servo motor restores precise flap control, eliminates erratic ventilation behaviour and reduces unwanted noises from the dashboard area. Typical symptoms that indicate a faulty actuator include inconsistent air distribution, inability to change temperature properly, clicking or grinding noises behind the dash, and stuck vent doors. Replacing the faulty actuator returns full HVAC functionality and improves cabin comfort.
Technical Information
- Manufacturer: Valeo
- Model: Citroën C4 II; Peugeot 308 T7
- Product Codes: T1009914P; A 6479E7
- Other Numbers: 64790000000
Function
The unit is an electric servo (HVAC actuator) that drives heater and ventilation flaps (air distribution and blend doors). It converts electrical control signals from the climate control module into mechanical movement of internal ducts, enabling proper temperature mixing and airflow direction.
How To Replace
- Safety First: Always disconnect the battery before starting work to avoid short circuits and potential damage to electronic components.
- Access: Depending on the model, access is typically gained by removing the glovebox or a small dashboard panel on the passenger side to reach the HVAC housing.
- Disconnect: Unplug the electrical connector and remove the retaining screws or clips that hold the actuator in place.
- Remove & Install: Remove the old actuator, fit the new unit in the same orientation, secure fasteners and reconnect the electrical connector.
- Test: Reconnect the battery, cycle the ignition and operate the climate controls to verify smooth flap movement and correct airflow. In most cases the actuator is plug-and-play and requires no additional programming.
Installation Recommendations
- Follow vehicle manufacturer access and removal procedures to avoid damaging dash trim or HVAC components.
- Handle the servo and its plastic gears carefully; do not force linkages when fitting to prevent gear stripping.
- Check and clear any debris or foreign objects inside the HVAC housing that might obstruct flap movement.
- If unusual noises persist after replacement, inspect linkages and duct mounts for binding or broken clips.
Why The Part Most Commonly Fails
Actuators commonly fail due to worn or stripped plastic gears, internal potentiometer wear, motor burnout from prolonged use or overload, and ingress of moisture or dust leading to corrosion. Repeated full-range cycling, high mileage, and brittle plastic after long-term heat exposure accelerate wear. Mechanical stress from obstructed flaps or broken mounting points can also cause premature failure.
Buy this Valeo heater servo motor if you need a reliable replacement for faulty HVAC flap control on Citroën C4 II or Peugeot 308 T7. The product codes listed above help ensure quick identification and fitment for repair jobs in the workshop or for competent DIY maintenance.
