When the climate control system is not working in Your 2009 Ford Flex the first thing You should do is try to reset the system. Resetting it is pretty easy and it usually clears up software bugs that can pop up within the system. To reset it You will need to put Your vehicle in the on position without the engine running. Next press and hold the AC and Heat buttons at the same time then release the AC button and hold only the Heat button. Continue to hold until the system turns off and then back on again and that should reset the controller for it. With the controller reset it should be working like normal again.
When you say heat button, is that the on and off button??
Juan C. Riveras
November 10, 2023
Power and A/C, release A/C while holding power for about 10 seconds then release. Vents should be blowing warmer air.
John
October 6, 2023
The answer doesn’t make sense, the car doesn’t have a heat button, it has power defrost auto a/c and circulation buttons…which one do you consider as heat ?
Jane J
July 16, 2020
To reset the climate control in your 2009 ford flex turn your ignition key to the "on" position and depress the ac and heater buttons at the same time, release and depress the heat only until a reset is performed.
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