How do you turn off the headlights on a 2006 Volvo s40?

To turn off the headlights on a 2006 Volvo S40, ensure the ignition is in the "off" position. If the headlights are still on, check the headlight switch on the dashboard and turn it to the "off" position. Additionally, if the vehicle is equipped with automatic headlights, you may need to switch the setting to manual to control the lights. If they remain on, it's possible there's a malfunction that needs further inspection.