Tesla S Owner's Manual page 57

Lights
High Beam Headlights
Push the left-hand steering column lever away
from you to turn the high beam headlights on
continuously. To cancel, pull the lever towards
you.
To briefly flash the high beam headlights, pull
the lever towards you.
The high beam headlights can automatically
switch to low beam when there is light
detected in front of Model S (for example,
from an oncoming vehicle). To turn this
feature on or off, touch Controls > Lights >
Auto High Beam.
Note: Your chosen setting is retained until you
manually change it.
In situations where high beams are turned off
because AUTO HIGH BEAM is turned on and
light is detected in front of Model S, you can
temporarily turn on high beams by pulling the
lever all the way toward you.
The following indicator lights are visible on the
instrument panel to show the status of the
headlights:
Low beam headlights are on.
High beam headlights are on.
Illuminates when high beams are on
but the Auto High Beam setting is
turned off or if the Auto High Beam
setting is turned on but is
temporarily unavailable.
High beams are currently turned on,
and Auto High Beam is ready to turn
off the high beams if light is
detected in front of Model S.
High beams are temporarily turned
off because Auto High Beam is on
and is detecting light in front of
Model S. When light is no longer
detected, the high beams will
automatically turn back on.
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Warning: Auto High Beam is an aid only
and is subject to limitations. It is the
driver's responsibility to make sure that
the headlights are always adjusted as
appropriate for the weather conditions
and driving circumstances.
Headlights After Exit
When you stop driving and park Model S in
low lighting conditions, the exterior lights
remain on. They automatically turn off after
one minute or when you lock Model S.
You can turn this feature on and off by
touching Controls > Lights > Headlights After
Exit. When Headlights After Exit is off, the
headlights turn off when you engage the Park
gear and open a door.
Adaptive Front Lighting System
(AFS)
If equipped, the Adaptive Front Lighting
System (AFS) automatically adjusts the beam
of the headlights to improve your driving view.
Electric sensors measure driving speed,
steering angle and yaw (the rotation of the car
around the vertical axis) to determine the
optimum position of the headlights based on
current driving conditions. For example, to
improve visibility while driving on winding
roads at night, the AFS casts the beam in the
direction of the curve. When low beam
headlights are turned on and when driving at
lower speeds, AFS improves lateral
illumination to increase the visibility of
pedestrians and curbs, and to improve
visibility when turning at a dark intersection,
into a driveway, or when making a u-turn.
The Adaptive Front Lighting System (AFS)
operates whenever headlights are on. If
Model S isn't moving, or is moving in reverse,
the adaptive headlights do not activate. This
prevents the lights from inadvertently blinding
other drivers.
If the AFS fails, the instrument panel
displays an alert. Contact Tesla
Service.
Model S Owner's Manual