Heater actuator BEHR Citroën EAD516 P1975001 U a 41 647949

Description

Heater servo motor BEHR CITROEN C5 X7 and PEUGEOT 407

Part description

This BEHR heater servo motor is used to control part of the heating/air conditioning system (typically the movement of the dampers in the heater body). If the car shows irregular heating function, inability to change the direction of flow or temperature, or clicks/jumps can be heard from the dashboard area, the servomotor is often the cause.

It is a used part intended for Citroën C5 X7 and Peugeot 407. When choosing, be guided mainly by the product codes listed below – mechanics and home repairers often look for them directly by number.

Technical information

• Manufacturer: BEHR
• Model: Citroën C5 X7, Peugeot 407
• Other numbers: 41 647949

Product codes

• Product codes: EAD516, P1975001 U, 41 647949

Installation recommendations

Generally/typically for heating servomotors, the exact procedure may vary depending on the specific heating/air conditioning design and access in the given model. Below is a practical, safe procedure for replacing this type of part.

1) Before assembly (checks of the used part, what to compare with the old part)

• Compare the codes on the part (EAD516 / P1975001 U / 41 647949) with the old servo and with the markings on the car.
• Check the match of body shape, fit and connector design (number of pins, connector lock).
• Visually verify that there is no cracked body, damaged connector, or worn/broken output shaft.

2) Necessary tools and materials (in general, without specific extra parts)

• Set of screwdrivers and bits (Torx/hex depending on design)
• Ratchet with extensions, or a small ratchet for tight spaces
• Plastic pry bar for removing covers/upholstery
• Flashlight
• Contact cleaner (optional) and dry cloth

3) Step-by-step assembly procedure

1. Turn off the ignition and disconnect the battery (for wiring work and to minimize the risk of a short circuit).
2. Ensure access to the servo motor by removing the necessary covers/trimmings (the procedure varies by car model).
3. Take a photo of the original condition: wiring routing, connector position and servo seating – this will facilitate reassembly.
4. Disconnect the electrical connector (release the connector lock, do not pull on the cables).
5. Loosen and remove the servo motor mounting screws.
6. Carefully remove the servomotor from its seat – do not forcefully pry it to avoid damage to the counter/damper.
7. Check the counter (link/flap/axles): it must move freely without stuttering; if it is stiff, first remove the cause (otherwise the new servo motor will not last long).
8. Compare the old and new piece 1:1 (fitting, connector, length and output shape).
9. Place the servo motor in the correct position so that it fits without tension; then screw in the fixing screws.
10. Connect the electrical connector and check that it is firmly engaged.
11. Reinstall all the removed covers/trims and make sure you don’t pinch the wiring anywhere.
12. Connect the battery and perform a basic function check (reaction to change in heating/air conditioning settings).
• 4) Post-assembly checks and test drive/function verification
  • Try changing the temperature and flow modes (depending on the car’s equipment) and observe whether the behavior has changed smoothly and without interruptions.
  • Listen for unusual sounds (clicking, skipping) – they may indicate a bad seat or a problem with the valve.
  • After a short ride, check again that the connector is firmly connected and the part is holding in place.

  5) The most common assembly mistakes + how to avoid them

  • Swapping similar servos: always check codes and connector/mount match.
  • Pinched wiring when installing the covers: run the cables along the original route and visually check before tightening.
  • Mounting on a “stuck” damper: if the heating mechanism is stiff, the servomotor will be overloaded and will quickly go away.
  • Rough handling of the connector: loosen the fuses correctly, do not pull on the wires.

  Reasons why the part is damaged

  • Wear of the gears inside the servo motor (common during long-term use or frequent adjustment of flaps).
  • Stiffened or damaged flaps in the heating body – the servo motor is working under excessive resistance.
  • Moisture and oxidation of the connectors or power fluctuations that stress the motor electronics.
  • Mechanical damage during previous disassembly/assembly (broken handles, cracks, damaged connector).