The Antara transfer box is no more problematic than BMW, etc. as a search on the Internet would reveal. When they do go wrong they go wrong big time. Some say it is possible to convert from 4WD to 2WD.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.