The BMW 5 Series has an auto-lock feature. You may locate the central locking system in between the aircon ventilation, as shown below. Related ArticlesHow do I adjust door locks and locate the central locking button for BMW 218i?How do I adjust door locks and locate the central locking button for BMW X3?How do I adjust door locks and locate the central locking button for BMW 216i GT?How do I adjust door locks and locate the central locking button for BMW X3 2nd Gen?How do I adjust door locks and locate the central locking button for BMW 318i?