The Amarok is interesting, a good friend had one for a few years and is an experienced 4WD driver, caravaner and 4WD fire truck driver and got caught out one day in a State Forest while collecting firewood in a trailer. The Amarok for some strange reason would not engage "low gears 4WD" with trailer electrics hooked up. Unhooked trailer electronics and "4WD low gears" engaged and he got out up steep slippery slope ok with the trailer full of firewood. Once out hooked up trailer electrics ok all worked and drove home. The Amrok (like most) he owned did not have a seperate low range gear box as such, just low gears which were suppose to be just as good, but the Amarok did not like low gears in 4WD while towing electrics hooked up, you could fool it by unhooking trailer electronics and worked fine.
He read the manuals and contacted VW and never could get a good explanation of what had happened, eventually he sold the Amarok and moved on.
The weird thing is it happened and the short term fix was simple, unplug the trailer electrics from Amarok and off you go. What was really annoying was no one could tell him what happened and why and if it was a fault or just weird normal for an Amarok. Otherwise it worked ok.
