Randomly, on my 2012 175hp 2.2 auto. The On light is still illuminated, but the Set and Resume buttons won't work. Then, when it feels like it, it will start working again! Any idea what could be causing this - no other issues, but maybe the battery is a bit low form the car standing. Full Mazda history, 98K miles.

Oh, and I'm in the UK, in case you think I'm insomniac!