It sticks and sometimes does not work hate to spend $130+ for a little Button. Thanks

Is your DSC button located along with all of the climate control buttons on your dash?

If it is I thought that replacements could be found on pelicanparts.com. I had my ASC and climate buttons crack on my E39 and an entire set of replacement buttons was roughly $20.00. Hope this helps.

-iToast

No it is down below next to the Heated Seat and Sport Buttons, unfortunately it seems anything for an M5 is outrageous they quoted me like $128 and that is with a discount, Ouch!!!!!

I don't think they are different from the other E39 models' buttons. Just check it out and if they are same say it's for a 525.

worth a shot, thanks.