Originally Posted by 2k2wranglerx
The BAS does work in 4lo. I was in 4low there. It's not very noisy, as a matter of fact, it's hard to tell when it's working. i did feel a slight "tap tap tap"as i was going up the hill. I'm pretty sure that was the BAS working.
I am not sure I understood what you are talking about. BAS - Brake assist is a system to increase braking pressure in an emergency stop - it detects panic braking and adds boost.
Tap tap is from the electronic limited slip, I thought the proper abbreviation used by Chrysler is ELSD (similar to Toyota's ATRAC, or Nissan ABLS).
But I guess it worked and that's what matters. Not a bad perormance for an open diff vehicle. Not a substitute for a selectable locker, but apparently does in a pinch - and rather fool proof. Wonder about long term reliability, but it is a simple system...