So, I went out to start the 2011 C70 today and it cranked right up. The problem was all the electrical was off, even the power steering seemed off. All displays were blank, the AC was off, no blinkers, no windows, seats won't adjust. Then about 5 minutes later, everything came on! Any ideas?

 

I have the same problem.
Did you resolve the problem? If then, please share your experience.

 

No problem is still there.