text version of content this owner's manual page
from owners manual to the vehicle Lexus IS, year of production 2013:
4-3. Operating the lights and wipers183
■The Automatic High Beam can be operated when
The engine switch is in IGNITION ON mode.
■Camera sensor detection information
●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 oncoming or preceding vehicles are hidden from sight due to repeated
curves, road dividers or roadside trees
●High beam may be turned off if an oncoming vehicle that is using fog lights without
using the headlights is detected.
●House lights, street lights, red traffic signals, and illuminated billboards or signs may
cause the high beam to turn off.
●The following factors may affect the amount of time taken to turn high beam on or off:
The brightness of headlights, fog alights,nd tail lights of oncoming and preceding
vehicles
The movement and direction of oncoming and preceding vehicles
When an oncoming or preceding vehicle only has operational lights on one side
When an oncoming or preceding vehicle is a two-wheeled vehicle4
The condition of the road (gradient, curve, condition of the road surface etc.)
The number of passengers and amount of luggage
●High beam may be turned on or off when unexpected by the driver.Dr
●Small vehicles, such as bicycles, may not be detected.iving
●In the situations below, the system may not be able to correctly detect the surrounding
brightness levels, and may flash or expose nearby pedestrians to the high beam. There-
fore, you should consider turning the high beams on or off manually rather than relying
on the Automatic High Beam system.
In bad weather (rain, snow, fog, sandstorms etc.)
The windshield is obscured by fog, mist, ice, dirt etc.
The windshield is cracked or damaged.
The camera sensor is deformed or dirty.
Surrounding brightness levels are equal to those of headlights, tail lights or fog lights.
Vehicles ahead have headlights or tail lights that are either switched off, dirty, chang-
ing color, or have improperly adjusted aim.
When driving through an area of intermittently changing brightness and darkness.
When frequently and repeatedly driving ascending/descending roads, or roads with
rough, bumpy or uneven surfaces (such as stone-paved roads, gravel tracks etc.).
When frequently and repeatedly taking curves or driving on a winding road.
There is a highly reflective object ahead of the vehicle, such as a sign or a mirror.
The vehicle’s headlights are damaged or dirty.
The vehicle is listing or titling, due to a flat tire, a trailer being towed etc.
The driver believes that the high beam may be causing problems or distress to other
drivers or pedestrians nearby.
IS350/300/200t_U (OM53D18U)
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