I have been dealing with this as well, they have replaced the driveshaft twice, replaced the transfer case twice, replaced the center carrier bearing. The latest TSB came out to install new bolts and shims at the center carrier bearing, but my vibration was still there. It is usually there after the car has sat over 6 hours. I still think there is something that may be related to the rear axle bolt recall, but still trying to figure it out. the servicing dealer says they are going to get back on the hotline call and see if they can get an engineer to come assist. At least this dealership is trying. This is a 2022 Explorer Platinum Hybrid with 14,400 miles on it. Vibration has been there since my drive home from the dealer in Ohio.