What are the functions of the BMW 320 key?

[DeChristian]

BMW 320 key functions include vehicle unlocking, vehicle locking, trunk opening, etc. Types of BMW keys: BMW car keys are divided into square keys and blade keys, with three-button and four-button variants, as well as LCD keys and the recently popular card-style keys in the past two years. Key functions: Long-pressing the unlock button can simultaneously open all four windows and the sunroof, long-pressing the lock button can simultaneously close all four windows and the sunroof, and pressing the lock button three times in a row can remotely start the vehicle, etc. Solutions for a dead key battery: Although BMW car keys are remote-controlled, they still come with traditional mechanical keys. Press the button on the back of the remote key, then remove the mechanical key in the direction of arrow 2.