I have EXACTLY the same issue with my new EX-35. I definately did not have this noise until about a week ago and I took delivery on 05/18/08.
Having a pretty extensive automotive background, I already have the A Pillar trim off along with part of the headliner to gain access to possible areas where the noise is orginating. I even have a set of headphones with a number of clip-on microphones to help isolate where the "creeking" noise is coming from.
At this point, I have narrowed it down to originating just under the passenger side above the headliner where the body meets the A-Pillar. To gain access to this spot you will need to remove the 2- 10mm bolts that hold the side airbag to the roof. The noise seems to be transmitting through the metal and down the A-Pillar on the Passenger side. It is extremely hard to pinpoint as this frequency tends to reflect off a variety of surfaces and is very easily transmitted. If it wasn't for the headphones and numerous microphones, it would have been difficult if not impossible to pinpoint the actual origin.
The question now is how to solve this "creeking" noise... I am going to make a tool where I can access one of the holes in the roof under the headliner and see if I can get to the metal that is causing the noise.
I will post updates to my progress or lack of...
RobertN wrote:I have already tried moving the seat to different positions -- only result --- my discomfort! Even moved the passenger seat --- still sounds like I am on a creaking boat in the ocean. Frustrations escalating. It is SO irritating! The noise is there with the passenger seat empty and with a passenger?? Somewhat convinced it is coming from the dash somewhere...............
Possible fix -------- turn the Bose stereo louder!