2004 Mercedes Benz 220cdi Driving computer

Recently, I had an accident and was hit by another car at the right side.
The damage was fixed, but I discovered that the driving computer has been disappeared from the menu. The insurance company told me that this has nothing to do with the accident.

The situation is that: I had the driving computer work before the accident and now it doesn’t work after the accident. How can I prove this?

Can parts from the driving computer be damaged from such a crash?