Lexus LS460 2011 Owner's Manual page 232

2-3. Operating the lights and windshield wipers
AFS
AFS (Adaptive Front-lighting System) improves visibility at inter-
sections and on curves by automatically adjusting the direction of
light axis of the headlights according to vehicle speed and the
degree of the tire angle that are controlled by steering input.
Operates at speeds of 10 km/h (6 mph) or higher.

Deactivating AFS

Daytime running light system (if equipped)
To make your vehicle more visible to other drivers, the headlights and tail
lights turn on automatically whenever the engine is started. Daytime run-
ning lights are not designed for use at night.

Headlight control sensor
216
LS460_EE
On/off
The indicator turns on when the
AFS is deactivated.
The sensor may not function properly if
an object is placed on the sensor, or any-
thing that blocks the sensor is affixed to
the windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction