A&Q about 350Z
Q:
If you have rubber valve stem in the rears, the goons took your pressure sensors.
If you still have the sensors, they may have swapped right for left when reinstalling wheels. The sensors may need to be re-set by the dealer.
A:
I don't think swapping left to right would cause that - they did that to mine and it just showed the wrong wheel, although there is really no way of telling on the display which side is which, I just knew which was which originally. As stated above - rubber valve stem means no TPMS, metal valve means TPMS. See if the fronts look different than the rears.