1. Use the emergency key. Most BMWs come with an emergency key, which is typically located in the glove compartment or center console. This key can be used to unlock the driver's door.
2. Use a wire hanger. You can also use a wire hanger to unlock the car door. Insert the hanger through the weather stripping at the top of the door, near the lock, and then use it to pull the lock up or down until it opens.
3. Call a locksmith. If you are not able to unlock the door yourself, you can call a locksmith. A locksmith will be able to get you into your car without damaging it.