Description
Heater Servo Motor For CITROËN C5 2005–2007, C6, PEUGEOT 407, 607. Climate Control Motor-Reducer.
This replacement heater servo (climate control actuator) is designed for Citroën and Peugeot models using the EAD 552 family of actuators. The unit controls airflow flaps and temperature blend doors inside the HVAC box, restoring precise air distribution and temperature regulation. Commonly searched under part numbers such as EAD 552, 4PUH-19E616-AB, 4PUH-19E616-AC or 6447RJ, this servo is a practical spare for workshops and DIYers who service climate systems on C5, C6, 407 and 607 vehicles.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Models: Citroën C5 (2005–2007), Citroën C6, Peugeot 407, Peugeot 607
- Product Codes: EAD 552, 4PUH-19E616-AB, 4PUH-19E616-AC
- Other Numbers: 6447RJ
Function And Benefits
The servo is an electromechanical actuator (motor with gearbox) that moves HVAC flaps and blend doors to regulate cabin airflow and temperature. Replacing a failing servo restores correct vent selection, defrost performance and temperature accuracy. Benefits include quiet operation, precise positioning, and direct fit for the listed models when matching part numbers.
How It Fails And Typical Lifespan
Failures are most often mechanical or electrical: plastic gear wear or stripped teeth, degraded gearbox, worn motor brushes or failed potentiometer/position sensor. Moisture ingress and heat-related aging of plastic components accelerate wear. Lifespan varies with usage and environment but problems commonly appear after many years of service or high mileage.
Replacement Overview
- Locate The Actuator On The Heater Box Under The Dashboard (Access Often Requires Removal Of Glovebox Or Lower Trim Panels, Depending On Model).
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And To Protect Vehicle Electronics.
- Unplug The Electrical Connector And Remove Fixing Screws. Note The Position Of The Actuator Arm Or Flap Linkage.
- Install The New Servo In The Same Orientation, Reattach The Linkage, Refit Screws And Connect The Electrical Plug.
- Cycle Ignition And Operate The Climate Controls Through Full Travel To Allow The Unit To Self-Home. If The Vehicle Requires Calibration, Use A Diagnostic Tool To Initialize The Actuator.
Installation Recommendations
Always Disconnect The Battery Before Removing Or Installing The Unit. Keep Work Area Clean To Prevent Debris Entering The HVAC Box. Transfer Any Linkage Clips Intact Or Replace With New Clips When Damaged. For Accurate Positioning Or If The Vehicle Shows Persistent HVAC Fault Codes, Use Proper Diagnostic Equipment To Calibrate The Actuator After Fitting.
Why Choose This Unit
Ideal For Garages And Skilled DIYers, This Servo Matches Common OEM Part Numbers And Restores Proper Climate Function Without Replacing Larger HVAC Components. Fast Identification By Part Number Saves Time During Procurement And Repair.
Common Search Keywords
Heater Servo Motor, Climate Control Actuator, EAD 552, 4PUH-19E616-AB, 4PUH-19E616-AC, 6447RJ, Citroën C5 Heater Motor, Peugeot 407 HVAC Servo.
