1. Open the driver's door manually. If you have a key fob, you can use it to unlock the driver's door. If you don't have a key fob, you can use the emergency key that came with your car. The emergency key is usually located in the owner's manual or in the glove compartment.
2. Locate the battery. The battery is located in the trunk of your car. To access the trunk, you will need to use the emergency key to open the trunk latch.
3. Jump-start the car. You can jump-start your car using another car or a portable battery charger. To do this, you will need to connect the positive terminal of the jumper cables to the positive terminal of your car's battery and the negative terminal of the jumper cables to the negative terminal of your car's battery.
4. Unlock the car. Once the car is jump-started, you should be able to unlock it using the key fob or the emergency key.
Here are some additional tips for unlocking a 2002 BMW X5 series with a dead battery:
* If the car is locked and you don't have a key, you may be able to unlock it using a Slim Jim. A Slim Jim is a thin, metal tool that can be used to reach the unlock button inside the car.
* If you have a key fob, you may be able to unlock the car using the remote trunk release button. The remote trunk release button is usually located on the key fob.
* If you don't have a key fob, you may be able to unlock the car using the emergency keyhole. The emergency keyhole is usually located on the driver's side door.
