1998 A8 Celsius to Fahrenheit?

[rlippe]

I've read the forums and seen what other had to say, still nothing. I own a 1998 A8 3.7 and would like to change my temp display from celsius to fahrenheit. There are 2 AUTO buttons

[rlippe]

Hold down the button on the ac unit that looks like a swooping arrow (the bigger of the two). While held, tap the + button on the driver's side ac unit.