Whenever I'm going above say 65 mph I get I high pitched vibrational squaking that is driving me insane. It seems to be coming from the passenger door but sometimes sounds like it might be the passenger seat, even when someone is sitting in it. I've futzed with the doors, windows, locks, mirror, sunroof. I've gone so far as driving with a can of WD40 spraying random stuff at high speeds. NOTHING. It might actually be trying to kill me. Anyone experience this?
2007 MCS, 50K miles. Bought in March 2014, and started immediately (bought it in TN and had to drive to NY)

 

Sometimes I have a similar high pitched squeak coming from the rear seat of my Clubman. If I fold the rear seatbacks down it goes away so I figure it is from the hinge or something. I haven't tried fixing it yet.

 

Hmm, my dog won't be thrilled about it, as the back sets are so much comfier. I will try it though. I would light a candle and sprinkle my own blood in the car if I thought that would fix it at this point.

 

Mine wasn't very loud and I think it happens below 65 MPH, so it might be different and of course squeaks can come from almost anywhere, maybe even outside the car but you'd probably be able to tell the difference.

 

I went through the whole car one day. Used foam, felt tape, whatever I could, it was well worth the time. First thing to do is to empty the car of everything it didn't come with. Empty all side pockets of all nick nacks, tools, coins. Even lift up the back seat and check under it. You may even find the back seat bottom isn't secured.

Go for a ride and check again. If still there, put someone in the back seat and see if they can pinpoint the source. Applying pressure to various areas of the seat, frame, plastic panels, glass, door card ect can help.


GL!

 

Had a similar squeak in my R53. Went away when the rear passenger seat was down. I then WD'd the hinge in the middle and now no more squeak.

 

I've hear the same thing in mine. Very subtle, but noticeable when the HK is off. I got tired of looking so now when I hear it I just turn up the music. Voila! No more squeak!

 

When you hear the noise, apply pressure to the bottom rear corner of the door panel. If the noise goes away, pop that corner of the panel off of the door and put some felt on the contacting edge.