2012 Acura MDX Owner's Manual - Page 137

Turn Signal and Headlights LIGHT SENSOR Fog Lights Turn the fog lights on and off by turning the switch next to the headlight switch. You can use the fog lights only when the headlights are on low beam. With the light switch in the AUTO position, you can also use the fog lights when the headlights turn on automatically. They will go off when the headlights turn off. Daytime Running Lights With the headlight switch off, the daytime running lights come on when you turn the ignition switch to the ON (II) position and release the parking brake. They remain on until you turn the ignition switch off, even if you set the parking brake. When the headlights are on, the daytime running lights are off. The automatic lighting feature is controlled by a sensor located on top of the dashboard. Do not cover this sensor or spill liquids on it. 130