Yep, Cold temps make the pressure lower relative to the outside.

Quote:
Originally posted by Ed_Monster:
I got my 2005 two weeks ago on Thursday Dec 1st. Right after I pulled out of the dealership I went home and packed my stuff for my snowboard trip to Mammoth. So I was on my first road trip 2 hours after I drove off the dealer smile Anyway, so I get to about 30 miles before Mammoth and it was snowing, so I turned on my 4x4 and left it on all 4 days. About 30mins after the low tire presure light goes on. I checked the tires the next morning and they were fine. The light was on the 4 days I was there. It finally turned off about 40mins away from Mammoth, by this time I had it back on 4x2. Someone told me it was the below freezing temps and high altitude. I'm hoping that's true and not that something is wrong with my sensor. Does this make sense to you guys? I'm no car expert smile