Obviously I will be taking it back to the dealer, but wanted to see if anyone else had similar issues. I drive occasionally on the beach here in Florida. There is one particular beach that is 4WD only and has really soft beach sand. Both times I have driven there after 100-150 yards my 4WD starts totally going haywire. The beach is totally flat there are no hills or dunes or anything just soft sand. Trip 1. Just put in 4A and didn't change the driving mode. After driving approximately the distance stated above the truck started binging at me and telling me that the hill start assist warning and a hill descent fault has been detected. Trip 2. Changed driving mode to sand. Same story. . .after driving the approximately the same distance again things went totally haywire. The following 5 things happened 1. hill descent fault 2. hill assist warning 3. driving mode automatically changed to normal which turned off the 4 wheel drive 4. unable to change driving mode out of normal 5. something about traction control (I don't remember exactly) So there I am stuck on the beach unable to put it back into 4WD at least through a driving mode. Luckily was was able to press the 4A button and lock the differential button to get off the beach, but as far as I am concerned it was a total failure. I need a reliable 4WD system otherwise my 65k vehicle may get washed away by the rising tide. In my opinion the 4A doesn't work to well in soft sand - it seems like it waits too long to kick in and your tires are already starting to dig into the sand before it engages. Any one have similar issues or any thoughts?