Hi William
Your car may well be smarter than you but...
There are two buttons under the steering wheel...as you look at the wheel the button on the left is for turning your smart key to off or on and the button on the right is for resetting the 'tire' pressure...
So whilst resetting your tyre pressure, you must have switched the snark key function back on!
I always turn the smart key function off if I am not going to drive the car for few days.....
Shiner