NHTSA Complaint #11054984 — 2017 FORD F-250

I TOOK THE TRUCK TO THE DEALER AFTER I NOTICED THE TPMS WAS MALFUNCTIONING AFTER ABOUT 4,000 MILES AND 3 MONTHS OF OPERATION. THE TPMS ORIGINALLY SHOWED A DRAMATIC FAULT IN ONE TIRE, BUT LATER SHOWED FAULTS IN THREE. THE READINGS CHANGED CONTINUALLY FROM TIRE TO TIRE AND SOMETIMES WERE AS LOW AS 40 PSI IN SOME TIRES. THE DEALER REPLACED 1 SENSOR BUT COULD NOT GET THE TPMS TO CALIBRATE. I RETURNED THE NEXT DAY AFTER THE DEALER OBTAINED TWO MORE NEW SENSORS. AFTER THE TWO NEW SENSORS WERE INSTALLED IN TRUCK WHEELS, THE TPMS STILL WOULD NOT CALIBRATE. THE DEALER INSTALLED A NEW SENSOR IN THE REMAINING WHEEL AND WAS THEN ABLE TO CALIBRATE THE TPMS. THE DEALER BELIEVES THAT ALL FOUR SENSORS FAILED AFTER APPROXIMATELY 4000 MILES AND THREE MONTHS. THE DEALER SAID THAT ALL FOUR TIRES HAD "MOISTURE" INSIDE WHEN THEY INSTALLED NEW SENSORS AND ASKED ME IF I HAD USED A PERSONAL AIR COMPRESSOR TO ADD AIR PRIOR TO THE FAILURES. I RESPONDED THAT I HAD NOT DONE ANYTHING TO THE AIR PRESSURE BEFORE THE FIRST FAILURE AND ONLY CHECKED ALL FOUR TIRES FOR AIR PRESSURE AFTER THE SYSTEM SHOWED A PROBLEM. WHEN CHECKING ALL FOUR TIRES AFTER THE FAILURE I MAY HAVE ADDED A POUND OR TWO TO EACH TO BRING ALL UP TO THE RECOMMENDED PRESSURE. I HAVE SINCE CHECKED MY COMPRESSOR AND IT DID NOT EXPEL ANY WATER AFTER DRAINING. I HAVE NOT YET RECEIVED THE FINAL SERVICE REPORT FROM THE DEALER, AS AFTER 4 HOURS OF WAITING FOR RESOLUTION, I WAS IN A HURRY TO GET HOME. OBVIOUSLY, ALL IS COVERED UNDER WARRANTY.