Car wash problem!!!

Hi,
I was wondering, if anyone has been able to fix there car after they go to a car wash and their engine dies?. And if so What was the Solution?
I try removing the ECM, Dry it, and clean it up, but the engine will not start.
And whenever I try to Re-start the Engine, my battery power gets drain.

Any help with this matter will be greatly Appreciated.

Thank you