S8 Bj.97 - squeaking in the engine compartment and Bose system

Hello forum!

I've been here since about two weeks. 3 months proud owner of an S8 Bj. 97 with six gears. That's a great car.

I have two questions for you:

1) Thus, approximately 18% of the population are women. Start every 20 times (not every time I start and actually only if the car was not used for at least a few hours), I hear a squeaky out of the engine compartment until I drive away and move the steering wheel. I'm pretty sure it comes from the steering and not from another strap. If it doesn't squeak for a few seconds right after starting, then at the latest, if you have to do it. B. when parked, steers in one direction until the attack. But all this is only immediately after the start. Maybe from 1 minute later and no matter how far you drive, the steering works perfectly and there is no noise. Enough servo oil is filled.Is the steering or part of it somehow driven by a belt that could be loose?

2) I have another little problem with my Bose system with the original Audi Radio. There is an engine antenna installed. There are 2 different situations:
a) You turn on the radio and 3 – 4 seconds later you hear a small "snatch" and the system works perfectly afterwards.
b) You turn on the radio and 3 – 4 seconds later you hear a loud "snatch" and the system only sounds. If you turn it off and turn it on again, everything works. 70 % of cases a and 30 % b.
I haven't figured out a pattern yet.

Maybe you have one or the other experience with this. Thank you in advance.

Mfg
Peter