I have a 2004 A6. I can't get AM radio. Are there any adjustments than can be made?

I'll let you know by this weekend. My wife told me that I had the same problem in one on mine but I never listen to AM so it wasn't a big issue until she put it "on my list".

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2001 A6, 4.2, Black

2003 A6, 2.7T, Tan