Description
Heating servo motor for CITROËN and PEUGEOT vehicles. Replacement from original equipment manufacturer Buhler.
Product Overview
This heating servo (HVAC actuator) is a direct-fit replacement used in the climate control system of selected Citroën and Peugeot models. It controls the movement of heater/air-mix and distribution flaps inside the HVAC housing to regulate cabin temperature and airflow direction. Supplied as an OEM-compatible unit, it is a common aftermarket replacement for failed or noisy actuators and is frequently searched by its product codes (EAM501, 951508Ua14, 6447QN).
Why Choose This Part
- Direct-fit replacement for original HVAC servo motors used on Stellantis platforms.
- Restores accurate flap movement for reliable temperature control and airflow distribution.
- Saves diagnostic time by matching popular OEM part codes (EAM501 / 951508Ua14 / 6447QN).
Compatibility
Common applications include Citroën Xsara Picasso and Peugeot 307 models. This actuator is often listed under the part numbers EAM501, 951508Ua14 and 6447QN — search by these codes to confirm fitment for your vehicle.
Technical Information
- Manufacturer: Behr / Buhler
- Model: EAM501
- Product Codes: 951508Ua14, EAM501
- Additional Numbers: 6447QN
Function And Symptoms Of Failure
The servo motor drives the HVAC flaps that mix hot and cold air and direct airflow to vents, floor or windshield. Typical symptoms of a failing actuator include: intermittent or stuck temperature settings, incorrect airflow direction, unusual clicking or grinding noises from the dashboard, or no flap movement at all. Failures most commonly result from worn internal gears, stripped plastic teeth, motor wear or electrical connector/circuit faults.
Replacement Procedure (High-Level)
Replacement is achievable by a competent mechanic or an experienced DIYer with basic hand tools. Typical steps:
- Disconnect the vehicle battery before starting.
- Remove the relevant dashboard trim or glovebox to access the HVAC casing (procedure varies by model).
- Locate the faulty servo on the HVAC box, unplug the electrical connector and remove mounting screws.
- Swap the old servo for the replacement, secure with screws and reconnect the harness.
- Reconnect the battery and cycle the climate control to check flap travel and absence of noises. Perform any recalibration if the vehicle requires it.
Installation Recommendations
- Always disconnect the battery before removing or installing the unit and follow manufacturer procedures to avoid damage.
- Inspect HVAC housing and linkages for broken plastic fragments or obstructions before installing the new servo.
- Check connector pins for corrosion and ensure a secure electrical connection to prevent intermittent faults.
- After installation, verify full range of motion via the vehicle’s climate control; some systems may require recalibration or a short test routine.
Most Common Cause Of Failure
Actuators typically fail due to mechanical wear of small plastic gears and internal motor wear combined with constant thermal cycling inside the HVAC box. Foreign debris, water ingress or connector corrosion can accelerate failure. Noisy operation is a clear sign that the internal gearing is degrading and replacement is recommended to avoid damage to the HVAC housing flaps.
Note For Buyers
Part numbers EAM501, 951508Ua14 and 6447QN are commonly used when searching for this servo. If you require precise fitment, confirm the vehicle’s required part number before purchase.
Order Information
Ideal for professional workshops and home mechanics who need a reliable replacement HVAC actuator for Citroën and Peugeot models. Fast identification by product codes reduces downtime and speeds up repairs.
