Tip for the beach, if you see any sign of soft sand engage low range. Easiest way is to slow down to below 10kmh hit the low range button and then knock it into neutral. As it slows below 5kmh it will engage with ease first go every time. Same process for going back to high range.
The reason, after much experimentation and no info from Jeep is in low range the rear clutch pack is locked up and will not over heat. High range in soft sand will eventually over heat and disengage 4wd - then you sink...
Edit: you can also do up to 80kmh in low range no probs but then the speed regulator kicks in
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