bmw 3 series steering wheel lock

I have a bmw 335i e90 sedan twin turbo .  bought used 156k.  drove vehicle started acting crazy due to the battery module that sits on top of the battery is broken/cracked right at the positive battery terminal.  it kept getting crack so much i think the battery wouldnt charge any more and then 1 dy i go to thw store try to start it and got a steering wheel lock light and cant get it unlocked there has to be a way to unlock it right?