TPMS issue after vehicle sitting for a bit

I've been pretty lucky to have taken a number of trips over the last few months so my 2024 4Runner SR5 sits parked for periods of 3 weeks at the longest, followed by a couple of 1 week trips. One tire keeps losing pressure, has anyone had an issue with a newer 4Runner having a like type issue. I've only got less than 11,000 miles. TPMS is bad? Tire needs to be reset on the rim?

 

If you have a tire that is actually losing pressure as measured with a tire gauge (not TPMS) then your TPMS is not the problem.

 

Have you inspected the tire to see if you picked up a nail/screw?

 

Yes, almost every time I park it at home I take a look to see if there's a head of a nail or screw in the tire tread. I'm thinking it's the TPMS or valve stem? Maybe the tire needs to be reset on the rim? Get's pretty damn annoying to have to keep dragging out my compressor to pump up the tire.

 

Mix up soap and water, put it in a spray bottle, spray the valve stem, spray the rim, spray the tire look for bubbles.

 

Cup and a paint brush also works.

 

Buy one of those little tools at Oreilleys or vatozone and check/ tighten your valve stem core.

 

Sounds like the TPMS is working as designed. It's letting you know about a slow loss of tire pressure. Have you had the tire checked at a shop? Discount Tire doesn't charge for that.

 

Must be on the inside sidewall or inner tread,
Possibly rim leak? Valve stem? Spray with soapy wadder

 

I do not think you said how much pressure loss you have in 3 weeks?
The hot day to cold night will lower temperature 3-4 lbs just from temp changes. And always same tire-correct?
I have a Scanguage 2 reading my 4 tire pressures when driving fast on 2 lane highways, especially if roadway shoulder is sloped.
I can see a temp difference from sun side to shade side when sun hits only one side driving -like late AM on hot days. Sometimes 1.5 lbs or more.