Im loving the FX!!! But still issues with the TPMS sensors, I took it to Discount tire, they did the scan thing and reset the system, they then all showed on the computer screen, no lights, BUT then i turned it off, turned it back on and boom, same sensor not working, well i had to be getting home so drive the 100 miles home, and now 2 sensors are not working.... is this a sign they need to be replaced?