Resetting service options

Hi, I have a 2004 TL, and I really enjoy it. Unfortunately I live very far from the dealer, and they will not tell me how to reset the maintenance option so that I don't see things like oil life 0%, 3,500 past maintenance. If anyone could tell me how to do this on my own so that I don't get ripped off, and have to pay $70 for an oil change that would be very much so appreciated. Thank you.