Thanks so much for the replies, and very good trouble shooting tips!

To get full access to the belt, I would need to remove this part (yellow circle)



Would anyone know of any video / manual I could get for disassembly instructions? I think once I can get that part (yellow circle) removed, I should be able to navigate the belt / accessories.

So far, I've ordered a Haynes Manual, as well as a Mercedes WIS DVD (ebay). Would those help with disassembly instructions?


Some things I've noticed:
--> When its raining, sound gets louder?? (Will try testing this out by spraying water)
--> Sounds gets louder as I rev higher! (Sorry if this is a newbie observation).
--> Sound is there whether or not A/C is on or off.