Originally Posted by predacon47
Thanks for the help everyone! Is there anything I can try before I send it off to a Euro mechanic? I am not very mechanical inclined so Barney Style would be great. Thanks again everyone.
+1 on new battery setup/registration.
If higher rating battery is installed, CAS needs recoding with new specs.
Battery registration with BMW scan tool or equivalent.
Reinitialize certain systems, ie. steering angle sensor.
You're going to need to find someone with a tool that can do these things for you. Maybe try in the regional forum to find someone in your area.
One thing to check if you have power windows, does the window roll up/down automatically when you push it past the resistance point. If the person that helped you install the battery didn't make sure this functions as it should then probably didn't do the steps above either.