2016 CX-9 air conditioning - Page 2 - Mazda Forum - Mazda Enthusiast Forums

Mazda CX-9 This larger SUV adds a V6 option, as well as more cargo room, to the CX-7 option.

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Old 05-17-2017, 11:05 PM
Junior Member
Join Date: May 2017
Location: California
Posts: 2

I am in California's Central Valley with hot summers. I just purchased a 2017 CX9 signature. I have not noticed any problems with the AC, this is a big car so the AC has to work a little harder to cool the cabin.

My Subaru Impreza had truly weak AC.

Remember to use the recirculating feature to cool the cabin faster, and adjust the airflow (floor, face, etc.). I have noticed the buttons on the bottom row of the HVAC controls are very sensitive and I have inadvertently shut off the system by bumping into a button when putting my phone in the compartment beneath.
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Old 05-19-2017, 02:30 PM
Join Date: Jun 2016
Location: Washington, the state
Posts: 45

Has anyone tested their CX-9 to see if the hot air dampers are closing all the way when they have the AC on? With the complaints not uniform, there must be problems in individual cars.

Try this--have a thermometer that can get the bulb or probe into the dash air vent or so close that it accurately reads the outflowing air temperature. Run the engine up to operating temperature, park in the shade with the engine idling. Get the outside air temperature. Turn the AC off, run the temperature setting down to 60F (as low as it goes). Set the fan speed on 2 or 3 marks. Measure the outflowing air from the vents. It should be the same as the outside air temperature. It may take a couple of minutes to stabilize if you just turned off the AC. If the air is warmer than the outside, it seems like a hot air damper is not closing tightly. That would be a warranty repair.

Another test is to do the same as above with the AC on and the temp set as low as it goes. If the air flowing out of the vents is about 20F lower than the outside, then the AC is probably doing as good as it can.
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