I have had my '08 RDX (tech) for 6 days now and loving it. Just one thing that is annoying me (and my dog).....there is a high pitched whistling noise emanating from underneath the vehicle (not the hood) whether I am idling or driving. It sounds like an electronic whistle. I took it to the dealer yesterday and they kicked over an RDX in the lot that made the same noise. They said it is probably the design of the emissions system. I am taking it in again next week but my level of annoyance is much higher now.....anybody else experience this problem?

 

you sure it's not the sound of the turbo?

 

So, the dealership had my RDX for three days trying to fix the high pitched whistling problem. A factory rep from Ohio happened to be there and he owns an RDX also. It was decided that a new fuel pump should be installed into my brand new baby.....I picked her up today and the whistling sound is DEFINITELY at a lower volume than previously. At least now I don't hear it when the doors are closed. So, I'm a happy camper.