2006 BMW 325i oil service meter

how to reset oil service meter after oil change

Someone just posted the procedure yesterday or today. Try searching for it under BMW

My girlfriend has a 2006 325i. Can someone tell me just what is the purpose of the “oil service meter” and what, if anything, would happen if it was not reset after an oil change? Also, on this model, is it possible to change the oil yourself or does the dealer have to do it?