Tire Pressure light help needed
 

My tire pressure light came on today (2004 4.4i), but none of my tires were low. Any ideas as to why this may happen? Front pressure (19" rims) was 39 lbs and rears were 40 lbs after the light came on. Thanks!

Could have been as simple as an exterior temp change or long drive creating a change in pressure. If it stays on, just follow the owners manual to reset it, no biggie.

Thanks, I appreciate the help!