Originally Posted by racooper3

I hate to break it to you Bro' I did the AGM switch for $235, which included the AGM 850 cca battery and reprogramming by dealer in Lakeland. I have the same AGM battery that BMW installs only not their name on it. Can't say I agree with the SAT radio option issue you have. I would definitely go to a third party and perhaps BMW NA Customer Service to have somebody review your part number for compatibility, etc. Good Luck.