Newer cars have a TPMS and warn you when the pressure gets low. Now that
cold weather is here,check to see that your tire is at least the
recommended pressure. I forgot about it and this morning it was 7
degrees. One tire was 1 pound under and set off the warning. It would
not reset after driving as it had to come up even more than driving did.
Filled it up when I got home.

Not a major deal as I knew the pressure was adequate to drive, but it
annoys me to have that yellow light on when driving. I understand this
is a common happening for the first really cold snap.