Digger-I have TPMS. Just purchased car and constant msg: Tire pressure system failure. Contact Saab dealer. I recognize I could fix the system - probably with a set of new pressure sensors - however rather not have. My owners manual states "The message shown above is NOT displayed if none of the wheels have sensors, such as if winter wheels without sensors are fitted." Seems straight forward, however mechanic told me I cannot shut off the TPMS system. It's federal law. However, I believe he was thinking of 2008 model year and forward. If I pop the sensors off, I should be all set, no?