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Lexus is300 2021 - Temporarily Lowering Sensor Sensitivity

Lexus is300 2021
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152
4-3. Operating the lights and wipers
The high beams may be turned off if a
vehicle ahead that is using fog lights with-
out its headlights turned on is detected.
House lights, street lights, traffic signals,
and illuminated billboards or signs and
other reflective objects may cause the
high beams to change to the low beams,
or the low beams to remain on.
The following factors may affect the
amount of time taken for the high beams
to turn on or off:
The brightness of the 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 in the vehicle
The high beams may turn on or off unex-
pectedly.
Bicycles or similar vehicles may not be
detected.
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 titling 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
Temporarily lowering sensor sensitivity
The sensitivity of the sensor can be tempo-
rarily lowered.
1 Turn the engine switch off while the fol-
lowing conditions are met.
The headlight switch is in or .
The headlight switch lever is in the origi-
nal position.
Automatic High Beam switch is on.
2 Turn the engine switch to IGNITION
ON mode.
3 Within 60 seconds after step 2, repeat
pushing the headlight switch lever to the
high beam position then pulling it to the
original position quickly 10 times, then
leave the lever in the original position.
4 If the sensitivity is changed, the Auto-
matic High Beam indicator is turn on
and off 3 times.

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