2008 Mercedes R-Class Owner's Manual - Page 145

Controls in detail Lighting Low beam headlamps Turn the exterior lamp switch to position B. With the SmartKey in starter switch position 1 or the KEYLESS-GO* start/stop button pressed once, the following lamps will switch on: Tail and parking lamps License plate lamps Side marker lamps With the SmartKey in starter switch position 1 or the KEYLESS-GO* start/stop button pressed once, the following lamps will switch on additionally: Low beam headlamps High beam headlamps (when the combination switch is pushed forward) Automatic headlamp mode The following lamps switch on and off automatically depending on the brightness of the ambient light: Low beam headlamps Tail and parking lamps License plate lamps Side marker lamps Warning! G If the exterior lamp switch is set to U, the headlamps will not be automatically switched on under foggy conditions. To minimize risk to you and to others, activate headlamps by turning exterior lamp switch to B when driving or when traffic and/or ambient lighting conditions require you to do so. In low ambient lighting conditions, only switch from position U to B with the vehicle at a standstill in a safe location. Switching from U to B will briefly switch off the headlamps. Doing so while driving in low ambient lighting conditions may result in an accident. The automatic headlamp feature is only an aid to the driver. The driver is responsible for the operation of the vehicle's lights at all times. 144