Yesterday was the coldest day of the season so far, 27 degrees. When I went out in my '08 Outback, the tire pressure light was on. Temp outside was 30 at that time. I went back home and got the other car.
Later in the day, I checked and pumped all the tires up to 34 psi. Sticker is 32 front, 30 rear. One of the tires was at 28, the other 3 at 30.
Today I went out with the temp about 35. Low pressure light was on for about the first 5 minutes, then went out.
So, what's happening here? Is the sensor sensitive enough to pick up 28 psi? Is this just an effect of the low temp? Should I just ignore it on cold mornings?
TIA!