Hey everyone, I'm new to the forum. Long-time lurker, recent Audi owner. I picked up a 2006 C6 A6 w/ 80k and after a week of driving a yellow symbol popped up, 'tyre pressure system malfunction." I did some research on here and other forums and still am pretty confused about it. I've actually never even seen the icon that appears when mine pops up anywhere but in my car. I've looked all over and haven't seen it once. If anyone has any idea where I could start, it would be greatly appreciated.