A couple members of my brigade did a trip through the Kimberley recently and covered some badly corrugated roads. All of the vehicles in the convoy had failures of various magnitude but in particular was a new 110 that lost most instruments and boost (details info limited). The owner had to limp to Kununurra so the dealer could get to it whereby after considerable fault finding it turned out to be a inline fuse behind the radio. The owner apparently was advised by the dealer that warranty could be an issue because he took it off road. I would have thought that buying a Landrover was the very reason to be able to go 'off road'.
Anyway, may be of use if it happens to you.
Regards