Hi lexus members, Im new here and have some issues on my gs and see if you guys can help me out here. When I drive my car, sometime a loud noise randomly came on from the navigation and starts rattling. It does that once in a while everytime I drive.

 

Have you tried putting your hand on the navigation to see if the sound goes away? Have you ever had the radio removed? If you have maybe they left some bolts loose or just forgot them?

What you can do is remove the radio and line it with thin adhesive backed tape along the edges it makes contact with the dash and other parts. You can do also the same with the top vent!

Also another thing to consider is the source of the vibrations, how are your tires? Do you have a bent wheel, or not balanced? These things can add up to rattles and vibrations in the cabin.