Have an 05TL A/T without Navi. My car has been at the dealership 8-10 times for all sorts of rattles (doors, dash, center consol, instrument cluster, steering column).

Just wanted to share something with subscribers regarding the steering column. My rattle was caused by a screw that had become loose from its grounding on the under side of the steering column. The way you test for this is by tapping firmly around the rim of the steering wheel with the engine off. If you are able to replicate the rattle, then take your TL into the dealership and have them check the screws under the steering column assembly!