A young friend of mine has an old 1.8L petrol Passat (about 8-10years old maybe), that intermittently flattens it's battery.
Sometimes when he locks the car, instead of a single flash from the indicators, they will carry on flashing for a while. He's been told that his car sometimes starts flashing for no reason whilst parked.
This would seem to be the cause of the drain but where would be the best place to start looking for the fault? Is this a common one? He's already replaced the flasher relay.
Tim