so I just purchased a certified pre-owned A6 3.0 from my local audi dealer and couldn't be anymore satisfied with my decision. SMOOTH ride, love it! however, one thing that is absolutely driving me bonkers is the "RT" button that's located on my steering wheel. what exactly is it supposed to control?!? through trial and error, i've been able to determine that it seems like a toggle button that either activates/deactivates the up and down arrow buttons which scan the radio stations and cd tracks. that can't be it, can it? i mean, that's just stupid if that's the only purpose of that RT button. what else am i missing here?

i'd consult the owners manual but i left it at my friend's house and of course he can't find it now.

 

Telephone for factory wired phone...