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Mercedes-Benz · Air Conditioning & Heating

Heater blend flap actuators

The small electric motors that move the flaps deciding how much air goes through the heater, where it comes out, and whether it is recirculated.

Also called blend motor, flap actuator, servo motor.

How you know it is this

  • Temperature stuck hot or cold on one side however the controls are set
  • A clicking or ticking from behind the dashboard, often repeating
  • Air coming from the wrong vents
  • Recirculation that will not engage

Worth knowing before you buy

  • REPEATED CLICKING FROM THE DASHBOARD IS THE SIGNATURE — a stripped plastic gear inside the actuator hunting for a position it cannot reach.
  • There are several in a car with climate control, one per flap and zone. The fault code or a diagnostic actuator test names which, and that matters because access varies from easy to dashboard-out.
  • Hot on one side and cold on the other is a blend flap, not a refrigerant problem.
  • Usually need calibrating after fitting.

What we need to quote it. The chassis number and the fault codes, or which zone is affected. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

Cabin filterBlower motorBlower resistorBlend flap actuatorsDucts and ventsClimate control panel
Cabin air — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the cabin air

All air conditioning & heating parts
Get in touch

Heater blend flap actuators for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)