HVAC Blend Door Actuator, Left Side Air Mix AC Heater Blend Door Actuator for Infiniti Q50 2014-2022 2015 2018, Replaces Parts 27732-4GF0A 27732-4GF0B

Installation & Preventive Steps (Important — helps avoid “hot/cold reversal”)Before removing the old actuator:Note the current cabin temperature setting (for example, 22°C).With the new actuator connected to a 12V power source, allow it to auto-position to the corresponding 22°C (approx. the midpoint).Install the new actuator onto the air damper assembly while it is in that position.If hot/cold reversal occurs after installation, try this manual forced calibration (approx. 90% success rate):Turn off the engine and fully switch ignition off (no accessory power).Press and hold the A/C button and the AUTO button simultaneously.While holding both buttons, turn the key to the ON position (instrument panel lights).Keep holding for 10+ seconds until you hear a “click” from the damper (about 30 seconds).Release buttons, wait 60 seconds, then test HVAC operation.Notes & RecommendationsThe motor is typically intact; omission of pre-positioning/power-on before installation is the most common cause of incorrect operation.If unsure, have a qualified technician perform installation and diagnostics.Do not force mechanical components; ensure connectors and mounting tabs align before tightening.

• HVAC blend door actuator for Infiniti Q50 (2014–2022) replaces OEM 27732-4GF0A, 27732-4GF0B, 277324GF0A, 277324GF0B
• Left-side AC air-mix heater blend door actuator is improved for precise HVAC temperature control
• High-precision machined HVAC blend door actuator — stable performance, wear-resistant, corrosion-resistant and anti-aging
• Plug-and-play installation — HVAC blend door actuator is easy to install with factory-style connector
• HVAC blend door actuator adjusts mixing between heater core output and evaporator cold flow to reach desired cabin temperature