I have a 2002 T&C (all wheel drive) with a tire pressure monitoring system.\nThe vehicle has about 45K miles. At about 25K miles, I began getting\nannoying messages on the message board telling me to "Service tire system\nsoon" or asking me "Spare tire in use?"\n\nThese messages are followed by "See owners manual". Unfortunately, there's\nnothing in the service manual.\n\nRecently, after about the third or fourth trip to the dealer's service\ndepartment, the service manager told me that I should have received a little\nmagnetic "doughnut" to retrain the sensors, which are located just under the\nvalve stems, and that I should follow the procedure in the manual. No\ndoughnutand (again) no info in manual. He then told me that he had tried to\nreset/retrain the sensors, but only made it to the third wheel in the\nspecified sequence (apparently LR, LF, RF, LR and finally, spare).\nSomething, he said, is wrong with the system but he doesn't know what.\n\nWell, I suggested, could we just disable the thing to do away with the\nannoyance. After all, it's not that much trouble to occasionally check the\ntire pressure... just like changing oil, checking air filters and all those\nother little pesky things that about 10 or 20 per cent of us do. That would\nbe OK, he said, but he doesn't know how to disable the thing, either.\n\nDoes anyone have experience with this system and advice to offer, apart from\ntrading the vehicle?