Description
Heater servo motor for Citroën C4 II and Peugeot 308 T7. Climate control gearmotor.
This Valeo heater servo motor (HVAC actuator) is a direct-fit replacement designed for Citroën C4 II and Peugeot 308 T7 climate systems. It controls the movement of temperature/air-mix flaps inside the HVAC box, restoring accurate temperature regulation and airflow distribution when original actuators fail. Ideal for professional workshops and DIY mechanics searching by part number (T1002120V, 6479E7), this unit helps eliminate clicking noises, stuck flaps, or incorrect cabin temperature readings.
Benefits
Direct replacement for factory units with OE-style fitment. Restores precise flap control and silent operation, improving passenger comfort and HVAC responsiveness. Compact design and standard electrical connector make installation straightforward for experienced technicians.
Technical Information
- Manufacturer: Valeo
- Model: Citroën C4 II; Peugeot 308 T7
- Product Codes: T1002120V, 6479E7
- Additional Numbers: 64790000000
Function
The servo motor drives internal HVAC flaps (air-mix/blend or distribution flaps) to regulate cabin temperature and direct airflow. It receives position commands from the climate control unit and converts electrical signals into precise gear movement.
Common Failure Modes
Actuators typically fail due to worn or stripped plastic gears, seized motor bearings, water/moisture ingress, or connector/circuit corrosion. Symptoms include grinding or clicking noises, inability to change temperature or airflow direction, inconsistent cabin temperature, or a flap stuck in one position.
Replacement Guidance
Location: The actuator is usually mounted on the HVAC housing—commonly accessible behind the glovebox or under the dashboard. Exact access points depend on vehicle model and trim.
Basic Replacement Steps:
- Disconnect the battery before starting work.
- Remove relevant trim panels or the glovebox to access the HVAC housing.
- Unplug the electrical connector and remove fasteners securing the actuator.
- Replace the actuator, ensure correct gear engagement with the flap shaft, fit fasteners, then reconnect the electrical connector.
- Reassemble trim and reconnect the battery. Verify full range of motion by operating the climate controls.
Installation Recommendations
- Always disconnect the battery before removal/installation and follow manufacturer service procedures to avoid damage.
- Inspect the flap shafts and surrounding gearbox for debris or damage before fitting the new servo.
- Ensure proper mesh between actuator gears and HVAC flap gears; misalignment can cause rapid re-failure.
- Check related fuses and wiring for corrosion or intermittent connections if electrical faults persist.
- For professional repairs, keep the cabin control unit operation checked after installation to confirm correct flap positioning and system response.
Why This Part Is Worth Replacing
A faulty HVAC actuator degrades cabin comfort, produces irritating noises, and can mask other HVAC issues. Replacing the servo motor with a correct-fit Valeo unit restores proper climate control function quickly and cost-effectively compared with replacing larger HVAC components.
