The dimming hole of Mercedes-Benz ML350 is located at the lower left of the steering wheel. On the vehicle equipped with intelligent lighting system, the circular external lighting switch at the lower left of the steering wheel can control the low beam, high beam, width indicator, fog lamp and other lights. When the light switch is set on the automatic key, the vehicle can automatically adjust the headlights on and off through the corresponding sensors. To turn on the headlights manually, just turn the headlight lighting switch to the left. The light adjustment of Mercedes-Benz ML350 can also be set by pressing the button on the steering wheel.