i have a rattling sound down under the h3 too. havent been able to figure out what it is, sounds like it is comming back from behind the midway point of the truck. I havent been offroading or anything like that , except driving on some of the worst streets in the world the last several days, south side chicago, kinda like off roading
. hope theres no one here from south chicago
anyway it sounds like there is something loose under there, and everytime i go over teh slightest unconformity in the road it rattles. Its been doing that for the last 3 days, 150 miles or so.
Gona take it to the dealer on monday and see what they say, but tomorow i will go under it and see if the ucp is nice and tight.