Code P0011 + P0021 after accident.

[bmwpower603]

This code came up after a HUGE piece of ice striking my S4's windshield cutting the engine out , and glass flying all the way to the backseat...

The car was left at my mechanics for the last 5 days, getting windshield replacement.

Code came up after having a dead battery.

I dropped it off at my mechanics to see what the issue is. He seems to think it is timing issue.

Could the ice striking the windshield, for one reason or anther cause this?? Insurance should be paying for this. Since the car was near perfect before- hand.

[bmwpower603]

*edit*

Looks like the tensioners are no good. The car is skipping, and has lost all its balls.
:*(