The problem with the transfer case can be caused by the encoder motor / transfer case motor loosing power, the transfer case engagement switch failing or loosing power, the vacuum actuator under battery tray loosing vacuum, the vacuum actuator valve... (yourmechanic.com)
The game - changing modern elements sit between the axles: a very large cabin that can be personalized like the owner's home, a shallow battery tray stacked with hyper - effective solid - state cells, a seating arrangement that could be an HD cinema in the rear, and a rolling office up front. (automobilemag.com)