Why does my Audi 80 make a high-pitched squealing noise when I turn on the AC?

I've noticed that whenever I turn on the AC in my Audi 80, I hear a loud, high-pitched squealing noise coming from the engine. It seems to go away after a minute or so, but it's quite annoying. Is this something I should be concerned about?

The most likely cause of this noise is a worn or loose belt in the AC system. It's important to get this checked out and replaced if necessary, as a loose or damaged belt can cause damage to other components in your Audi's engine.

I had a similar issue with my Audi 80 and it turned out to be a faulty AC compressor. It's a relatively easy fix, but it's important to address it soon to avoid any further damage.