If you do a search on the word "clunk," you will get a week's worth of reading on this problam that some people seem to have, and others don't, some fixes, both from the dealer and some DYI solutions, and plenty of history, opinions and such... it's nearly folkloric...

The rattling noise is probably something loose - like an exhaust hanging bracket or heat shield - give the service writer a quick ride and see if you can reproduce the noise so they can look for it and fix it. Likewise, when your there, ask them to address the the clink problem, too.

brad

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21-year PCA Member
PCA DE Instructor