Rear seat rattle FIX!!!
#2
Time passes, but some things stay the same. This was the fix I used on the deck-mounted brake light on my 2004 SL, which clattered against the rear window.
#6
#12
Remove the 3rd brake light and secure and or wrap the wire/plug. It's pretty evident what rattles and moves around when you pop the light out. I noticed right away when I swapped my 3rd brake light out in favor of the "rear parcel shelf cover."