Description
Overview
High-quality Heater Servo Motor designed for PSA vehicles, specifically Citroën C4 and Peugeot 307 II. Supplied under BEHR designation and referenced by OE-style codes such as EAD511 and 6447VA, this HVAC actuator controls flap positions inside the heater box to regulate airflow and cabin temperature. It is suitable for professional workshops and competent DIY mechanics seeking a direct-fit replacement.
Function And Symptoms Of Failure
The heater servo motor moves blend or air distribution flaps inside the heater box to direct warm or cold air to the cabin. Common symptoms of a failing unit include unusual clicking or grinding noises from the dashboard, incorrect airflow direction, no response to HVAC controls, or inconsistent cabin temperature. Failure is most often caused by worn plastic gears, motor burnout, electrical connector corrosion, or debris and moisture ingress.
Typical Replacement Notes
On many Citroën C4 and Peugeot 307 II variants the actuator is typically located behind the glovebox or lower instrument panel. Replacement usually involves removing the glovebox or lower dash trim, unplugging the electrical connector, and unfastening a few screws or clips that secure the servo motor to the heater box. After fitting the new unit, verify full range movement of the flaps and correct HVAC control operation before reassembling interior trim. Always disconnect the negative battery terminal if required by local workshop procedures when working on electrical components.
Causes Of Premature Wear
- Aged or brittle plastic gears that strip under load
- Motor electrical failure due to long service life or overheating
- Corroded or loose electrical connector causing intermittent operation
- Water or debris entering the heater box and jamming the mechanism
Durability And Maintenance Tips
Typical life expectancy varies with vehicle use and environment but these actuators commonly remain functional for many years under normal conditions. Regularly inspect HVAC operation and address dashboard noises early to avoid secondary damage to flaps or linkages. Keep the heater box area dry and clean to reduce risk of corrosion and debris-related failures.
Why Choose This Unit
This BEHR-designated servo motor matches common OE reference codes and offers a straightforward replacement path for workshop repairs or self-repairs. Clear product coding simplifies lookup by part number, helping mechanics and DIYers ensure correct compatibility before ordering. Purchase with confidence if your vehicle matches the listed models and reference numbers.
Technical Information
- Manufacturer: BEHR
- Model: Citroën C4, Peugeot 307 II
- Product Codes: EAD511, EAD 511, H1961 Ua 13
- Other Numbers: 6447VA
If you are unsure about fitment, compare the OE codes shown above with your existing part number or consult vehicle specific repair information. Ordering by the part number often delivers the fastest and most reliable match for Citroën and Peugeot HVAC repairs.
