Re: TPMS strangness
The TPMS system is flawed. Mine registered proper pressures when in fact the fuse was blown and it wasn't working. A while back my fuel release door quit working. Jeep doesn't list anywhere the fuse for it. Trust me, I searched long and hard for it. Took my Jeep in, they told me I need a new fuel door realease actuator. While there, I had them change the oil and rotate the tires.
Picked up my Jeep and the TPMS didn't work. Had an erroe code. Hadn't even left the service area yet. They took it back in the shop and 35 minutes later, told me that inexplicably that the TPMS "was offline" and I needed a new module for that as well.
This whole time I asked them to check fuses and the service advisor acted like I was stupid. Come to find out both the fuel door and TPMS are on the same fuse. When I got home I looked up the TPMS fuse, which Jeep DOES list, changed it and they both started working. The fuse had been blown for literally 3 months.It only listed an error when they took off my tires and rotated them for service. Moral of the story: check you tire pressures yourself once in a while.