hi my mates classic subarus battery is completely dead and he is locked out of his car the problem is that his car is d locked and the battery is to dead to activate the locks,is there any way of getting into the car without breaking the window

 

Connect a set of jump leads or a battery charger to the starter motor from underneath the car, + to the thick lead on the starter then earth to the body somewhere, then he should be able to unlock the car.