Lexus ES 300h Owner's Manual page 227

226
4-3. Operating the lights and wipers
The Automatic High Beam indicator will
come on when the headlights are turned
on automatically to indicate that the system
is active.
■ High beam automatic turning on or off
conditions
When all of the following conditions are
●
met, the high beam will be automatically
turned on (after approximately 1 second):
• Vehicle speed is above approximately 30
km/h (19 mph).
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with head-
lights or tail lights turned on.
• There are few streetlights on the road
ahead.
● If any of the following conditions are met,
the high beam will be automatically
turned off:
• Vehicle speed drops below approxi-
mately 25 km/h (16 mph).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have headlights or tail
lights turned on.
• There are many streetlights on the road
ahead.
Camera sensor detection information
■
The high beam may not be automatically
●
turned off in the following situations:
• When oncoming vehicles suddenly
appear from a curve
• When the vehicle is cut in front of by
another vehicle
• When vehicles ahead are hidden from
sight due to repeated curves, road divid-
ers or roadside trees
• When vehicles ahead appear from the
faraway lane on wide road
• When vehicles ahead have no lights
● The high beam may be turned off if a
vehicle ahead that is using fog lights with-
out using the headlights is detected.
House lights, street lights, traffic signals,
●
and illuminated billboards or signs may
cause the high beam to switch to the low
beams, or the low beams to remain on.
● The following factors may affect the
amount of time taken to turn the high
beam on or off:
• The brightness of headlights, fog lights,
and tail lights of vehicles ahead
• The movement and direction of vehicles
ahead
• When a vehicle ahead only has opera-
tional lights on one side
• When a vehicle ahead is a two-wheeled
vehicle
• The condition of the road (gradient,
curve, condition of the road surface etc.)
• The number of passengers and amount of
luggage
● The high beam may be turned on or off
when the driver does not expect it.
Bicycles or similar objects may not be
●
detected.
● In the situations shown below, the system
may not be able to accurately detect sur-
rounding brightness levels. This may
cause the low beams to remain on or the
high beams to cause problems for pedes-
trians, vehicles ahead or other parties. In
these cases, manually switch between the
high and low beams.
• In bad weather (rain, snow, fog, sand-
storms etc.)
• The windshield is obscured by fog, mist,
ice, dirt etc.
• The windshield is cracked or damaged.
• The camera sensor is deformed or dirty.
• When the temperature of the camera
sensor is extremely high
• Surrounding brightness levels are equal
to those 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,