How do you get the hood locks when the car is closed?

Neighbor just asked me if and how to get the hood locks in a locked car. Sonnemann has parked his V70 in the next city and locked it with FB… now the battery is completely empty, the mechanical locking cylinders of the doors and tailgate can not be moved, probably because never used. Suppose the microswitches no longer work and the interior lighting burned longer. I looked at this at my just and not really a possibility. find the hood to open from the inside… now good advice is expensive…