This has frustrated me as well. If you look up on the dash....all the way to the left you will see 6 buttons. The main button to get into the menu looks like a check mark surrounded by quotes as I recall. Anyway, you can enable or disable features like the seat that moves when you turn off the car as well as that annoying mirror that aims at the ground when you shift into "R".
Good Luck!
Setting the radio would take up more room than I suspect this board would allow. I'll just try to program all the good stations into every Avis DTS I drive, so you will be all set when you get into one. I hope you like XM150, the comedy channel WITH profanity....