Yesterday morning it was crazy cold out. When I got in the car to go to work it was dark, my breath was steaming and...
My tire pressure light was on.
I figured that it was just because of the temperature differential. So I got on my way to work.
Thankfully, I take a commuter train to work. At the end of the day, when I got back in the car it was still on.
I'm fortunate in that I have a local mechanic with great hours and really good service.
Turned out I was low in all four tires. They filled me up and sent me on my way, no charge.
I'm grateful that didn't turn out worse.