Volvo 2008 V70 Owner's Manual page 80

When the ABL function is activated, the headlight beams adjust laterally to help light up a curve according to
movements of the steering wheel (see the right-pointing beam in the illustration).
This function is activated automatically when the engine is started and can be deactivated/reactivated by pressing the
ABL button in the center console. This button lights up when the ABL function is activated, and will flash if
there is a fault in the system.
NOTE
This function is only active in twilight or dark conditions, and only when the vehicle is in motion.
Parking lights
The front and rear parking lights can be turned on even when the ignition is switched off.
Turn the headlight control to the center position (the license plate lighting comes on at the same time).
The lighting also comes on when the trunk lid is opened in order to alert anyone traveling behind your vehicle.
91
03 Your driving environment
Lighting
Brake lights
The brake lights come on automatically when the brakes are applied.
Emergency brake lights (EBL)