Two (small) problems

Hello!

The Audi 100 S4 5 Ender Turbo is active.

My two problems:

1. The P function in automatic mode has just ceased to work. He just keeps rolling. Everything else works! How can such a gear be determined if a lock is broken?

2. At the same time, he jumped badly (first in 3. Try and just because I gave gas). He's also rusting out the back. Not a little. But just enough that I could see in the rear view mirror. At the traffic light he could hardly hold the speed and went out once. Just when he was at home (7km drive) he was holding the speed and not rusting anymore, but the P function is converted like deleted or just idle function.


I hope for good advice and thank you for your help.