How do you turn on daytime running lamps on 2005 BMW X3?

To turn on the daytime running lamps (DRLs) on a 2005 BMW X3, ensure the ignition is in the "on" position. Then, set the headlight switch to the "AUTO" position, which allows the DRLs to activate automatically when the vehicle is in motion. If the DRLs do not turn on, check the vehicle's settings and ensure that the DRL feature is enabled in the vehicle's onboard computer.