I'm thinking that might be the case. Today I was cleaning the throttle body and disconnected the battery to avoid getting a code and when I re-connected it the tire pressure light was gone and the three sensors have a reading of 889 kPa on the DIC. obviously not correct but its not nothing. The reset/ learn instructions require holding down the lock and unlock buttons on the factory remote which is broken and requires re-soldering the battery holder to the board and I don't own a soldering iron. tried holding the buttons down on my command start remote but it doesn't work.