Hi everyone! I bought my 2008 A4 Cabriolet last August. Love the car. Now at 122k I replaced the turbo unit (leaked oil into the intake hose), water pump/timingbelt, and both transaxles (one was bad).......My issue is I cannot yet find TPMS sensors that are recognized: I tried Huff, now Denso-none appear to work at all (dashboard light remains on). I understand there are several other parts in this system that may be defective. Am I right to go to a dealer to have them scan the computer for other poss problems here, or have I just elected to have this issue because I do not go to the dealer for these sensors?!