Hi all, I purchaced a 2008 XKR last January and I have been using it as a daily driver since then. No issues up to now and extremely happy with it!

Now I am concerned about one thing, regarding the s/c:

I think I can't hear the supercharger whine lately, whereas it could be heard clearly until a couple of weeks ago.... Is there any way to make sure that the s/c is working properly? Should I get any error message if there was a problem with it's function?

 

Try checking the belt, I had both of my belts changed at 45k miles.