The same thing happened to me after driving around in over a foot of snow in New Mexico. Air pressure was at 75/80. Four days at below freezing temps with hubs locked in, and having to use four wheel drive just to get out of the motel parking lot. 650 yards up a dirt driveway covered in over a foot of snow to my son's place. But the light and warning did not come on until about half way home after driving in even colder temps. minus 1 degree. I stopped and checked the air pressure twice. The light would go out and back on during the 500 miles to home. After the last fuel stop about 180 mile from home, the light never came back on. That's been over a month ago with no issues. I agree it had something to do with the colder temps.