I have a 2011 wagon and I was wondering if anyone here has run into a little problem like i have.... yesturday i turned on my a/c and ran it on fan HIGH, and the fan was running on HIGH but when i started driving and gaining a little more speed the fan would turn its self down (indicator didnt change) and then when i slowed down or came to a stop the fan would kick back up to HIGH "normal"

 

Was the air recirculation on? If your moving 40mph the speed of the air through the open vent could reduce the need for fan assistance. <---just a guess