How do you change battery in a 2001 BMW 740il?

To change the battery in a 2001 BMW 740iL, first ensure the vehicle is turned off and the keys are removed. Open the trunk, then lift the carpet to access the battery compartment. Disconnect the negative terminal (black) first, followed by the positive terminal (red), and then remove the battery hold-down clamp. Install the new battery by reversing the process: connect the positive terminal first, then the negative, and secure the battery in place.