My TPC system on a 2007 997 is acting up. It began with one wheel not registering (---), then two and now intermittently two or occasionally none.
Also the "gong" sounds and the icon comes on saying "TPC Unavailable" (or something like that). I assume failures/battery issues with the sensors and nothing systemic, but wanted to ask before I go charging off to replace sensors. Is there some more investigation I should do before spending money? Thanks.