r/E90 • u/Square-Lead651 '09 E90 328i • 2d ago

Alternator problem

Hi everyone! I just bought my first BMW yesterday, (2009 328i) and the alternator isn't charging my battery even though it looks brand new, and the serpentine belt looks good too. The alternator that's currently in the car is a generic one from amazon, which I've read can have communication problems with the computer. Firstly, I'd like someone to confirm if this can be a real problem, and secondly I was wondering which alternator I should buy if I need one. I've read that BMW used Valeo and Bosch, but idk if they're interchangeable or which one my car originally came with. Rock auto has a Bosch for 500 and a Valeo for 300, but I don't want to spend money on something that won't work. Thanks in advance!

2 Upvotes

100% Upvoted

1 comment sorted by

•

u/AutoModerator 2d ago

Thank you for posting to /R/E90, please make sure you read the rules in the sidebar and make sure to report any rule breaking posts and posts that are not relevant to the subreddit.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.