I have a 2015 MDX and the auto climate control has stopped working. When I press the button, it will not come on. It appears I can run the a/c or heater without auto. This started 2 weeks ago and has me baffled. Any ideas?

 

EDIT - Sometimes it will go on, but sometimes it will not. Not sure why? Any ideas. Are there specific circumstances that it won't come on?

 

define won't come on. Mine for example if it is set to say 70 F and it is 65 F outside just blows air. The same system when it is 80 F outside will blow cold air. Try running the temperature up or down to the max setting and see if that changes things. It is a pretty confusing system. In auto, the fan speed I set is what blows all the time except in the max settings for cold or hot. So maybe your fan speed is set to off or 1.