After years of "tire monitoring system maintenance comes. See Owner's Manual” on the overhead display, I decided to just replace all 4 TPMS sensors. The problem is solved! We have a 2002 Grand Caravan so it's no surprise that the non-replaceable batteries died at some point, albeit sooner than I expected of course. Maybe I just have too high expectations. The problem was that when we first got this message, the sensors were supposedly tested and found to be transmitting. So for years we thought