Lexus IS F 2012 Owner's Manual page 164

2-3. Operating the lights and windshield wipers
Turning on the high beam headlights
Daytime running light system
■
To make your vehicle more visible to other drivers, the parking light turn on
●
automatically (at a increased intensity) whenever the engine is started and the
parking brake is released. Daytime running lights are not designed for use at
night.
Compared to turning on the headlights, the daytime running light system offers
●
greater durability and consumes less electricity, so it can help improve fuel
economy.
Headlight control sensor
■
164
With the headlights on, push the
lever forward to turn on the high
beams.
Pull the lever back to the center
position to turn the high beams off.
Pull the lever toward you to turn
on the high beams.
Release to turn them off. You can
flash the high beams with the head-
lights on or off.
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the wind-
shield.
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.