This is a different fault and not necessarily related to the 4x4 system, although it may turn out to be so as fault messages are sometimes a bit inaccurate.
It is worrying, though, and hard to understand as the Cross has been available "sur le continent" for long enough for faults to be ironed out.
Keep us up to date, Mike, as I suspect the same message will be appearing on a dahboard display not far from me and soon.
When you consider that my 4x4 Climbing, without the fancy electronics, clocked up 33,000 miles with no serious faults, I really wish that Fiat had simply provided us with a Climbing with the 1.3 MJ engine in the UK.