Airjer_

Sorry I haven't been around for a little while.

I know in general chrysler has issues with TPMS sensors leaking. There is a specic set of steps to dismount and remount tires on wheels with them. If those steps are not followed there is a potential to break the sensors. Most of the time the TPMS leaks can be resolved with a service kit. New seal, nut, and cap. The pressure drop you experienced after your repair was likely due to the drop in temp the tire was exposed to. You can expect on average about 1 lb. for every 10 degrees in temperature change.

Hi Airjer_
It looks like you've helped a few hundred folks since I last wrote you.
I have a question for you when you get a little time. Have you had any problems with remote air pressure sensors on the wheels? My wife's '07 Jeep Liberty needed tires and I bought some real quiet Cooper tires and had them mounted at the local used tire shop. Their tire machine holds the tire horizontally and turns it while a vertical tool pulls the tire off the rim.
One of the tires was losing air after mounting the new tires and I couldn't find a leak.
I ended up letting all the air out, loosening the valve stem, wiggling the stem to try to reseat the rubber seal then tightened the stem nut to the 71in.lbs. spec from the service manual and aired it up to 52psi warm. After a coupla hours it cooled...make that cold, real cold, the pressure dropped to 47psi but has held around that pressure for 5 days.
What do you think?
thanks,
Chris