turn signal LEXUS GS300H 2019 User Guide

2444-3. Operating the lights and wipers
GS450h_300h_OM_OM30F92E_(EE)
■Conditions in which the light distribution control of the headlights changes automati-
cally
●When all of the following conditions are met, the high beams will be turned on automat- ically and the system will operate:
• The vehicle speed is approximately 60 km/h (37 mph) or more.*
*: The area in the direction that the vehicl e is turning will be illuminated more brightly
than other areas while driving on a curve.
●When all of the following conditions are met, the variable high beams will turn on and the distance that the low be ams are projected will be adjusted automatically, depending
on the location of vehicles ahead:
• The vehicle speed is approximately 60 km/h (37 mph) or more. • The area ahead of the vehicle is dark.
• There are vehicles ahead with headlights or tail lights turned on.
●If any of the following conditions is met, the high beams or variable high beams will be
changed to the low beams automatically:
• The vehicle speed is below approximately 60 km/h (37 mph). • The area ahead of the vehicle is not dark.
• There are many vehicles ahead. • Vehicles ahead are moving quickly and the high beams may blind the drivers of theother vehicles.
■Camera sensor detection information
●The high beams may not be automatically changed to the variable high beams in thefollowing situations:
• When vehicles ahead 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 dividers or
roadside trees • When vehicles ahead appear from the faraway lane on wide road• When vehicles ahead have no lights
●The high beams may be changed to the variable high beams if a vehicle ahead that isusing fog lights without its headlights turned on is detected.
●House lights, street lights, traffic signals, and illuminated billboards or signs may cause the high beams to change to the variable high beams, cause the high beams not tochange to the variable high beams, or change the area that is not illuminated.
●The following factors may affect the amount of time taken to turn the high beam on or off, or the speed by which the areas not illuminated change:
• The brightness of headlights, fog light s, and tail lights of vehicles ahead
• The movement and direction of vehicles ahead • When a vehicle ahead only has operational 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 light distribution control of the headlights may change unexpectedly.
●Bicycles or similar objects may not be detected.

2484-3. Operating the lights and wipers
GS450h_300h_OM_OM30F92E_(EE)
■High beam automatic turning on or off conditions
●When all of the following conditions are fulfilled, the high beam will be automatically turned on (after approximately 1 second):
• Vehicle speed is above approximately 40 km/h (25 mph).
• The area ahead of the vehicle is dark. • There are no vehicles ahead with headlights or tail lights turned on.• There are few streetlights on the road ahead.
●If any of the following conditions are fulfille d, the high beam will be automatically turned off:
• Vehicle speed drops below appr oximately 30 km/h (19 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 dividers 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 vehicles ahead that is using fog lights without usingthe 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 light s, and tail lights of vehicles ahead • The movement and direction of vehicles ahead
• When vehicle ahead only has operational lights on one side • When 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.

2874-5. Using the driving support systems
4
Driving
GS450h_300h_OM_OM30F92E_(EE)
Lane departure alert function display
Displayed when the multi-information display is switched to the driving assist
system information screen.
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.
• LKA is turned on. • Vehicle speed is approximately 50 km/h (32 mph) or more.• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 3 m (9.8 ft.) or more. • Turn signal lever is not operated.• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 150 m (492 ft.). • No system malfunctions are detected. ( P. 290)
●Steering assist function
This function operates when all of the follo wing conditions are met in addition to the operation conditions for the la ne departure alert function.
• Setting for “Steering Assist” in of the multi-information display is set to “On”.
( P. 111) • Vehicle is not accelerated or decelerated by a fixed amount or more.• Steering wheel is not operated with a steering force level suitable for changing
lanes. • ABS, VSC, TRC and PCS (Pre-Crash Safety system) are not operating.
• TRC or VSC is not turned off. • Except for Israel: Hands off steering wheel alert is not displayed. ( P. 289)
3
Inside of displayed white lines is
white
Inside of displayed white lines is
black
Indicates that the system is recognizing
white (yellow) lines. When the vehicle
departs from its lane, the white line dis-
played on the side the vehicle departs
from flashes orange.
Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.

2884-5. Using the driving support systems
GS450h_300h_OM_OM30F92E_(EE)
●Vehicle sway warning
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”.
( P. 111)
• Vehicle speed is approximately 50 km/h (32 mph) or more. • Width of traffic lane is approximately 3 m (9.8 ft.) or more.• No system malfunctions are detected. ( P. 290)
●Lane centering function
This function operates when all of the following conditions are met.
• LKA is turned on. • Setting for “Steering Assist” and “Lane Center” in of the multi-information display are set to “On”. ( P. 111)
• System recognizes white (yellow) lines. • Dynamic radar cruise control with full-speed range is operating.• Width of traffic lane is approximat ely 2.5 to 4.1 m (8.2 to 13.5 ft.).
• Turn signal lever is not operated. • Vehicle is driven on a straight road or around a gentle curve with a radius of morethan approximately 200 m (656 ft.).
• No system malfunctions are detected. ( P. 290) • Vehicle does not accelerate or dece lerate by a fixed amount or more. • Steering wheel is not operated with a steering force level suitable for changing
lanes. • ABS, VSC, TRC and PCS (Pre-Crash Safety system) are not operating. • TRC or VSC is not turned off.
• Except for Israel: Hands off steering wheel alert is not displayed. ( P. 289) • Steering assist function is not operating.
■Temporary cancellation of functions
When operation conditions are no longer met, a function may be temporarily canceled. However, when the operation conditions are met again, operation of the function is auto-
matically restored. ( P. 287)
■Steering assist function/lane centering function
Depending on the vehicle speed, lane departure situation, road conditions, etc., the
driver may not feel the function is operating or the function may not operate at all.
■Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio playback, etc.
Also, it may be difficult to feel steering wheel vibrations due to the road conditions, etc.

2944-5. Using the driving support systems
GS450h_300h_OM_OM30F92E_(EE)
*1: If the turn signal indicator is not operated when changing lanes, the mark does not dis-
play.
*2:On some models
In the following situations, the RSA system alerts the driver using a warning dis-
play.
●When the vehicle speed exceeds the speed warning threshold applied to the
speed limit of the sign displayed on the multi-information display, the sign
color becomes inverted.
●If it is detected that your vehicle is overtaking when a no overtaking sign is dis-
played on the multi-information display, the sign flashes.
●On some models: When the RSA system recognizes a no-entry sign and
detects that the vehicle has entered a no-entry area based on the map infor-
mation of the navigation system, the no-entry sign flashes.
Depending on the situation, traffic environment (traffic direction, speed, unit)
may be detected incorrectly and a warning display may not operate properly.
■Automatic turn-off of RSA sign display
One or more signs automatically turn off in the following situations.
●A new sign is not recognized for a certain distance.
●The road changes due to a left or right turn, etc.
■Conditions in which the function may not operate or detect correctly
In the following situations, RSA does not op erate normally and may not recognize signs,
display the incorrect sign, etc. However, this does not indicate a malfunction.
●The camera sensor is misaligned due to a strong impact being applied to the sensor, etc.
●Dirt, snow, stickers, etc. are on the windshield near the camera sensor.
●In inclement weather such as heavy rain, fog, snow or sand storms
●Light from an oncoming vehicle, the sun, etc. enters the camera sensor.
●The sign is dirty, faded, tilted or bent, and if an electronic sign, the contrast is poor.
●All or part of the sign is hidden by the leaves of a tree, a pole, etc.
●The sign is only visible to the camera sensor for a short amount of time.
●The driving scene (turning, lane change, etc.) is judged incorrectly.
●Even if it is a sign not appropriate for the currently traveled lane, such a sign exists
directly after a freeway branches, or in an adjacent lane just before merging.
●Stickers are attached to the rear of the preceding vehicle.
●A sign resembling a system comp atible sign is recognized.
●The vehicle is driven in a country with a different direction of traffic.
Warning display

3144-5. Using the driving support systems
GS450h_300h_OM_OM30F92E_(EE)
BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system that has 2 functions;
●The Blind Spot Monitor function
Assists the driver in making the decision when changing lanes
●The Rear Crossing Traffic Alert function
Assists the driver when backing up
These functions use same sensors.
Switching the BSM function
The Blind Spot Monitor function and Rear Crossing Traffic Alert function can be switched on and off using the multi-information display. (P. 315)
When switched on, the BS M indicator illuminates on the meter and the buzzer
sounds.
Outside rear view mirror indicators
Blind Spot Monitor function: When a vehicle is detected in the blind spot, the outside rear view mirror indicator comes on while the turn signal lever is not op erated. If the turn signal lever is operated
toward the detected side, the outside rear view mirror indicator flashes.
Rear Crossing Traffic Alert function: When a vehicle approaching from the right or left rear of the vehicle is detected, the
outside rear view mirror indicators flash.
Rear Crossing Traffic Alert buzzer (Rear Crossing Traffic Alert function only)
When a vehicle approaching from the right or left rear of the vehicle is detected, a
buzzer sounds from behind the rear seat.
: If equipped
Summary of the Blind Spot Monitor
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3254-5. Using the driving support systems
4
Driving
GS450h_300h_OM_OM30F92E_(EE)
◆DRS (Dynamic Rear Steering) (if equipped)
Contributes to the turning characteristics and responsiveness of the vehicle
by slightly adjusting the rear wheel angle of the vehicle in accordance with
steering wheel movement
◆Hill-start assist control
Helps to prevent the vehicle from rolling backward when starting on an
incline.
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel
◆AVS (Adaptive Variable Susp ension system) (if equipped)
By independently controlling the damp ing force of the shock absorbers for
each of the 4 wheels according to the road and driving conditions, this system
helps riding comfort with a high level of stability, and helps good vehicle pos-
ture
When SPORT S+ mode is selected by the driving mode select switch, the
damping force is suitable for sporty driving ( P. 312)
◆LDH (Lexus Dynamic Handling system) (if equipped)
Provides independent control of the VGRS, DRS and EPS. Contributes to
turning characteristics at low speeds, responsiveness at medium speeds and
safety at high speeds by controlling the steering angle of the front and rear
wheels in accordance with the steering wheel operation and vehicle speed
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRC, VSC, hill-start
assist control, EPS, VGRS (if equipped) and DRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery road surfaces by
controlling the brakes, hybrid system output, steering assist, steering ratio and
rear wheel angle
◆Emergency brake signal
When the brakes are applie d suddenly, the stop lights automatically flash to
alert the vehicle behind

3294-5. Using the driving support systems
4
Driving
GS450h_300h_OM_OM30F92E_(EE)
■Automatic system cancelation of hill-start assist control
The hill-start assist control will be canc eled in any of the following situations;
●The shift lever is shifted to N or P.
●The accelerator pedal is depressed.
●The parking brake is engaged.
●Approximately 2 seconds elapse after the brake pedal is released.
■Operating conditions of emergency brake signal
When the following three conditions are me t, the emergency brake signal will operate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h (35 mph).
●The brake pedal is depressed in a manner that cause the system to judge from the vehi- cle deceleration that this is a sudden braking operation.
■Automatic system cancelation of emergency brake signal
The emergency brake signal will turn of f in any of the following situations:
●The emergency flashers are turned on.
●The brake pedal is released.
●The system judges from the vehicle deceleration that is not a sudden braking operation.
WARNING
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as excessively
worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always maintain a safe distance from the vehicle in front of you, especially in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes or uneven surfaces
■TRC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road surfaces, even if the TRC system is operating.
Drive the vehicle carefully in conditions where stability and power may be lost.
■Hill-start assist control does not operate effectively when
●Do not overly rely on the hill-start assist control. The hill-start assist control may not
operate effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, hill-start assist co ntrol is not intended to hold the vehicle stationary for an extended period of time. Do not attempt to use hill-start assist con-
trol to hold the vehicle on an incline, as doing so may lead to an accident.

4206-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
■When rotating the tires (vehicles with the tire pressure warning system featuring a tire inflation pressure display function)
Make sure that the power switch is off. If the tires are rotated while the power switch is in
ON mode, the tire position information will not be updated. If this accidentally occurs, either turn the power switch to off and then to ON mode, orinitialize the system after checking that the tire pressure is properly adjusted.
■Low profile tires (except 225/50R17 tires)
Generally, low profile tires will wear more rapidly and tire grip performance will be reduced on snowy and/or icy roads when comp ared to standard tires. Be sure to use
snow tires or tire chains on snowy and/or icy roads and drive carefully at a speed appro- priate for road and weather conditions. ( P. 336)
■If the tread on snow tires wears down below 4 mm (0.16 in.)
The effectiveness of the tires as snow tires is lost.
■Situations in which the tire pressure warning system may not operate properly (vehi- cles with the tire pressure warning system)
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used. • A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size. • Tire chains etc. are equipped.• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed. • If there is a lot of snow or ice on the vehi cle, particularly around the wheels or wheel housings.
• If the tire inflation pressure is extr emely higher than the specified level. • If wheel without the tire pressure warning valve and transmitter are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air- port or other facility that generates st rong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless communication deviceVehicles with the tire inflation pressure display function: If tire position information is
not correctly displayed due to the radio wave conditions, the display may be corrected by driving and changing the radio wave conditions.
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapi dly for example when a tire has burst, the warning may not function.

4426-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
Light bulbs
Check the wattage of the light bulb to be replaced. ( P. 558)
 P. 405
Front turn signal light (vehicles with single-beam headlights)
Outer foot light
You may replace the following bulbs by yourself. The difficulty level of replace-
ment varies depending on the bulb. As there is a danger that components may
be damaged, we recommend that replacement is carried out by any autho-
rized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
Preparing for light bulb replacement
Removing the engine compartment covers
Bulb locations
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