Description
Product Overview
The Valeo HELLA heater servo motor is a direct-fit HVAC actuator designed for Citroën & Peugeot vehicles. It controls air distribution and temperature blend doors, restoring reliable cabin climate control. Ideal for professional garages and competent DIY mechanics who search by part number.
Function And Features
- Controls blend and air distribution doors in the heating and ventilation system.
- Compact electric motor with integrated gearing and electrical connector for plug-and-play replacement.
- Compatible with common PSA part numbers and original equipment specifications.
Common Symptoms And Causes
- Stuck vents or inability to change airflow direction.
- Intermittent or persistent clicking noises behind the dashboard.
- Incorrect cabin temperature despite correct HVAC settings.
- Failures typically caused by worn plastic gears, moisture ingress or electrical connector faults.
Replacement And Installation
Replacement is straightforward for experienced technicians: disconnect the battery, access the actuator (often behind the glovebox or lower dash), unplug the wiring connector, remove the mounting screws and fit the new unit. After installation, verify operation across all HVAC modes and recalibrate if required by the vehicle.
Durability And Maintenance
Actuators are subject to mechanical wear and environmental effects over time. Regular inspection during HVAC servicing can detect early gear wear or connector corrosion. Replacing a faulty actuator will restore precise vent control and eliminate clicking or dead-zone symptoms.
Compatibility & Fitment Advice
This part is commonly used on Citroën C2, Citroën C3 and other PSA models. Always confirm fitment using the vehicle VIN or the product code before ordering. Searching by part number (e.g. 664458E or 6447NR) speeds up correct identification.
Technical Information
- Manufacturer: Valeo / HELLA
- Model: Citroën C2, Citroën C3 and selected Citroën/Peugeot (PSA) models
- Product Codes: 664458E, 6447NR
- Other Numbers: N100463X
For workshops and DIY repairers: keep connector contacts clean and confirm actuator movement before reassembling the dash. If symptoms persist after replacement, check HVAC control module and wiring integrity.
