Ok, so to answer the original reason I posted this thread - to get the dash error code simply hold down the BC button on the end of the left hand stalk when the dash icon is on-screen. I'm getting CC-ID 415 which indicates increased battery discharge. Leads me to believe my battery is indeed having issues. I have an amplifier and last time I took it in for service the tech noted that I have an aftermarket stereo. Hopefully they don't blame that.
I'm also getting CC-ID 381. Seems to be turn signals/side lights and DRL.
Decipher CC-ID codes here
http://www.bmwtis.com/tsb/attachment...ID_Numbers.pdf