I drove up from Cornwall to Milton Keynes to get my issue sorted. My local Jag just looked at me blankly when I presented him with the issues.
If you have this issue, take the drive at least you will know the cost up front. E&e even replaced one of my faulty door latches the same day while I was waiting. Very helpful.
Mine was from disconnecting the battery after alternator change, shouldn't happen in my opinion either for a wear and tear item like that.