Just wanted to say thanks to the many posters over the past while for their contributions. If it weren't for this forum I'd still be exchanging obscenities with my wife's X3 right now!
We had some heinous crap going on with DSC, EML, and parking lights etc... This simple fix being the battery, saved us from DIY nightmares of dealing with BMW retailer rates for labour.
We drive a 2004 X3 2.5 on black 20's (polished lip) and OEM 17's for winters.
Pic's to come.