Description
Overview
Valeo Heater Servo Motor designed for Citroen and Peugeot PSA vehicles. This HVAC actuator (product codes N100463X, 6447NR, 664458E) controls heater and ventilation flaps to regulate cabin temperature and airflow. Ideal for professional mechanics and DIY enthusiasts seeking a direct-fit replacement to restore accurate climate control.
Common Symptoms
- Inaccurate cabin temperature or inability to change temperature
- Clicking, grinding or repeated ticking noises from the dashboard
- Airflow stuck on a single vent position or not responding to controls
- Intermittent operation or complete failure of heater/vent functions
Why It Fails
Internal plastic gears and the small DC motor wear over time, especially in high-use HVAC systems. Heat, dust and moisture can accelerate gear wear or cause electrical contact problems. Mechanical overload, broken gear teeth or connector damage are common failure causes.
Replacement And Installation
Typical replacement requires access to the HVAC housing behind the dashboard or glovebox. Basic procedure: disconnect the battery, remove trim or glovebox as required, unplug the actuator electrical connector, remove the mounting screws, fit the new unit and reconnect. After installation, cycle the ignition and operate the climate controls to allow actuator self-calibration where applicable. Refer to vehicle-specific manuals for detailed disassembly steps and torque specifications.
Technical Information
- Manufacturer: Valeo
- Model: Citroen C2, Citroen C3 (suitable for selected Peugeot and other PSA models)
- Product Codes: N100463X, 6447NR
- Other Numbers: 664458E
Always verify fitment using the listed product codes and your vehicle VIN before ordering. If in doubt, consult a workshop manual or a qualified technician to confirm compatibility and replacement procedure.
