Our 8th month old Evoque did the same last year the AA call out who now cover Jag Landrover breakdowns said there had been a bad batch of the new glassmat tech batteries. That was a straighforward replacement battery at the dealership or could have been but they failed to tighten the neg terminal, and left the positive and negative terminals of the start stop booster battery completely off. The AA man who had come the evening before then returned and just lifted the positive cable off the battery with no force at all. The wife's Evoque dash had been flashing on and off for her short journey home. The AA man sorted it and was going to submit a report I reported it to the Service Manager and he said he would look into it, I heard nothing back I then contacted the Dealer principle, I hear the Service Manager has now left the Landrover dealership it seems I wasn't alone in receiving poor service but one disgruntled Customer took his complaint to the Top man at JLR. No manufacturer can prevent bad supplier batches its how they treat the Customer after such equipment fails.
Paul