my battery died at like 35k on a 06. im at 38k right now :-). Damn im probably owned an e90 here the longest out of everyone. July 05 :-)
I bought a battery and replaced it from autozone and did not register it. Orange seat belt crap came on and then randomly one day adaptive headlight went out. It was the battery issue...Long story short i fooking payed close to 300 for a new battery....100 at autozone.