[Jdaugh]

Hi all. I hope someone can help. My wife has my 2010 V70 D5 150 miles away and she got i it this morning, it started, then stopped almost instantly. The power tailgate opened, hazards came on then all electrics died. Now there is no life at all and the key fob is stuck in the dashboard. She has tried connecting a spare battery, the breakdown people have been out and couldn't fix it, so it will be towed home. Can anyone suggest a possible cause or at least a way of releasing the fob? Thanks in advance