2010 CX-9 GT - rear air turns off

Evening everyone!

Tried searching these (awesome) forums but couldn't find any similar threads - maybe someone has some clues....

2010 CX-9 Grand Touring FWD. Sometime in the past few days we noticed that when we turn on the air (just air, not necessarily AC), and then hit the 'Rear' button, everything works fine for about 30 seconds... And then the rear air (and 'rear' air button light) turns off. We can turn it back on... But then after about 30 seconds it goes off. Weird.

Any ideas?

So..... turns out that despite her insistence it wasn't her, we caught the 5 year old hitting the 'off' switch with her foot. Problem solved. Oops. (hand)