Does the change of weather affect your TPMS...

Them things are great... sure beats changing a tire when you find a slow leak leaves you a flat in the morning or getting off work.

I was going crazy with my wife’s car until I realized the spare was the culprit.

Yep, I had to borrow my friends mini air pump last month, handy little thing that he keeps in his glovebox.

When were fortunate enough to have seasons, it does. I keep a pressure gauge in my wife's car and always check them. Here, one day is 80, the next is 40, so it's hard to chase thr "correct" pressure day by day.

They are little radio transmitters in each tire on the newer cars, trucks, and motorcycles that notify the vehicles computer when the tire pressure is too low. Adds about $50-100 to every tire charge. My truck tells me the actual pressure and which tire is low. Wife's car just tells you that one of your tires is low. The trike just warns me by riding funny and not steering right.
On my truck I have to go through a 30 minute ritual every time the tires are rotated to reset the computer to know which sensor is on which wheel. It does take the spare out of the circuit when it is done. It's a generally good idea as my wife would drive for weeks on 4 flats.

Good info Ron and Sean...they have been out for quite awhile John, all new cars have them...my 2007 Dodge Nitro is the car that had the issue.
I remember a guy in 2005? with a Nissan 300Zx that complained about a tire monkey screwing his up and it was a $250.00 unit, but the prices have come down a lot.
My daily driver is a 2012 Nissan Frontier, and I was able to get 80,000 miles out of the original tires, I think in large part due to the TPMS sensors that notified me that there was an irregularity that my eyes did not pick up...I like it more than checking with a gauge every week or so....yeah, I am lazy.