My max a/c is to the left of recirculate. It’s only just started doing this. Every so often disappears then comes back.
Frustrating if you get into a very hot car.
what MY is your car, as I’ve never configured the buttons. This is how it came.
I believe it is the keyless entry that poses the risk.
This is combatted by the bonnet having to be open to use the obd2 port and the keys going dormant.
if you’re still worried you could get a pouch or put the key in a metal tin.