Lexus ES 250 Owner's Manual page 198

In the following situations the system may
●
not be able to correctly detect the sur-
rounding brightness level. This may cause
the low beams to remain on or the high
beams to flash or dazzle pedestrians or
vehicles ahead. In such a case, it is neces-
sary to manually switch between the high
and low beams.
• When driving in inclement weather
(heavy rain, snow, fog, sandstorms, etc.)
• When the windshield is obscured by fog,
mist, ice, dirt, etc.
• When the windshield is cracked or dam-
aged
• When the camera sensor is deformed or
dirty
• When the temperature of the camera
sensor is extremely high
• When the surrounding brightness level is
equal to that of headlights, tail lights or
fog lights
• When headlights or tail lights of vehicles
ahead are turned off, dirty, changing
color, or not aimed properly
• When the vehicle is hit by water, snow,
dust, etc. from a preceding vehicle
• When driving through an area of inter-
mittently changing brightness and dark-
ness
• When frequently and repeatedly driving
ascending/descending roads, or roads
with rough, bumpy or uneven surfaces
(such as stone-paved roads, gravel roads,
etc.)
• When frequently and repeatedly taking
curves or driving on a winding road
• When there is a highly reflective object
ahead of the vehicle, such as a sign or
mirror
• When the back of a preceding vehicle is
highly reflective, such as a container on a
truck
• When the vehicle's headlights are dam-
aged or dirty, or are not aimed properly
• When the vehicle is listing or tilting due to
a flat tire, a trailer being towed, etc.
• When the headlights are changed
between the high beams and low beams
repeatedly in an abnormal manner
• When the driver believes that the high
beams may be flashing or dazzling
pedestrians or other drivers
• When the vehicle is used in an area in
4-3. Operating the lights and wipers
which vehicles travel on the opposite side
of the road of the country for which the
vehicle was designed, for example using
a vehicle designed for right-hand traffic in
a left-hand traffic area, or vice versa
Customization
■
Some functions can be customized.
(P.482)
Turning the high beams on/off
manually
Switching to the low beams
■
Pull the lever to its original position.
The AHS indicator will turn off.
Push the lever away from you to activate
the Adaptive High-beam System again.
Switching to the high beams
■
Press the Adaptive High-beam System
switch.
The AHS indicator will turn off and the high
beam indicator will turn on.
Press the switch to activate the Adaptive
High-beam System again.
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