You can unlock the doors manually if you turn the key far enough. You can then open the hood and provide power to the vehicle with jumper cables and a donor car. If all else fails you can jack the vehicle up, support it on a jack-stand, and attach a red jumper cable to the starter positive red cable where it connects to the starter and then attach black cable to any metal place on the engine. You can use this procedure to charge the battery with either a battery charger for jumper cables from a donor vehicle.
in the trunk
If it does not have a key lock you need to install a battery or jump from another vehicle to the batter connections.
under the back seat
under back seat
think in trunk
ask that @ a BMW shop i had the same prod with mine
in trunk, right side of rear panel.
Behind the right-side hatch in the trunk compartment.
where is the starter locate on a 2007 525i BMW
where is the horn fuse for BMW 525i
on a 2002 it in the trunck where the battery is located on the right hand side
where is the starter locate on a 2007 525i bmw