Volvo 2007 S80 Owner's Manual page 79

Press the button to switch the fog lights on/off. The light in the button comes on when the fog lights are on.
NOTE
Regulations regarding the use of the front fog lights may vary, depending on where you drive.
Rear fog light
The single rear fog light is located in the driver's side taillight cluster.
The rear fog light will only function in combination with the high/low beam headlights or the optional front fog lights.
Press the button to switch the rear fog light on/off. The rear fog light indicator symbol
and the light in the button come on when the rear fog light is switched on.
87
03 Your driving environment
Lighting
NOTE
The rear fog light is considerably brighter than the normal tail lights and should be used only when conditions such
as fog, rain, snow, smoke or dust reduce visibility for other vehicles to less than 500 ft. (150 meters).
Hazard warning flashers
The hazard warning flasher should be used to indicate that the vehicle has become a traffic hazard. To activate the
flashers, press the button in the center dash. Press the button again to turn off the flashers.
on the instrument panel