warning lights Lexus GS350 2017 User Guide

1002. Instrument cluster
GS350_200t_GS F_OM_OM30F83E_(EE)
Warning lights and indicators
GS350/GS200t (except F SPORT models)
GS350/GS200t (F SPORT models)
The warning lights and indicators on the instrument cluster, center panel and
outside rear view mirrors inform the driv er of the status of the vehicle’s vari-
ous systems.
For the purpose of explanation, the fo llowing illustrations display all warning
lights and indicators illuminated.

1022. Instrument cluster
GS350_200t_GS F_OM_OM30F83E_(EE)
Warning lights inform the driver of malfunctions in the indicated vehicle s ystems.
* 1
: These lights turn on when the engine switch is turned to IG NITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a system if a light does
not come on, or turn off. Have the vehicle inspected by any authorized Lexus retailer
or Lexus authorized repairer, or any reliable repairer.
Warning lights
* 1
Brake system warning light ( P. 518) *
1, 3, 4
(If equipped)
“AFS OFF” indicator (
 P. 520)
* 1, 2
Charging system warning
light (P. 518) *
1, 3, 4
Brake hold operated
indicator (
P. 520)
* 1
Malfunction indicator
lamp ( P. 518) *
3
Parking brake indicator (
 P. 520)
* 1
SRS warning light ( P. 518) *
1
Brake system warning light (
 P. 520)
* 1
ABS warning light ( P. 519) *
5
Open door warning light (
 P. 520)
* 1
Electric power steering
system warning light (
 P. 519)Low fuel level warning light ( P. 520)
* 1, 3
(If equipped)
PCS (Pre-Crash Safety
system) warning light (
 P. 519)Seat belt reminder light ( P. 520)
* 1
Slip indicator (
P. 519) *
1
Master warning light ( P. 520)
* 1
(If equipped)
Tire pressure warning light (
 P. 521)
(If equipped)
LDA warning light ( P. 521)/
LKA warning light (  P. 521)

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4-2. Driving procedures
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■Parking brake operation
●When the engine switch is not in IGNI TION ON mode, the parking brake cannot be
released using the parking brake switch.
●When the engine switch is not in IGNITION ON mode, automatic mode (automatic
brake setting and releasing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system may
restrict operation to prevent overheating. If this happens, refrain from operating the
parking brake. Normal operation wi ll return after about 1 minute.
●Vehicles with towing package: In situations such as when parking while towing a trailer,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
●Vehicles without towing package: In situations such as when parking on a steep slope *,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
* : Use wheel chocks when parking on a steep slope.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light
●Depending on the engine switch mode, the parking brake indicator light will come on
and stay on as described below:
IGNITION ON mode: Comes on until the parking brake is released.
Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking brake indi-
cator light will stay on for about 15 seco nds. This does not indicate a malfunction.
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. ( P. 520, 524)
Depending on the condition, the park ing brake indicator light may flash.
■Parking the vehicle P. 222
■Parking brake engaged warning buzzer P. 528
■Usage in winter time P. 383

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4
4-3. Operating the lights and wipers
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
AHS (Adaptive High-beam System)
●
Adjusts the brightness and illuminated area of the high beams according to
the vehicle speed.
● Adjusts the intensity of the high beams, while driving on a curve, so t hat the
area in the direction that the vehicle is turning will be illuminated more brightly
than other areas.
● Operates the variable high beams
so that the area around vehicles
ahead is partially not illuminated
while all other areas continue to be
illuminated with the high beams.
The variable high beams help optimize
forward visibility while reducing the daz-
zling effect on the drivers of vehicles
ahead.
● Adjusts the distance that the low beams are projected according to the dis-
tance to a preceding vehicle.
: If equipped
The Adaptive High-beam System uses a camera sensor located behind the
upper portion of the windshield to assess the brightness of the lights of vehi-
cles ahead, streetlights, etc., and au tomatically controls the headlight light
distribution as necessary.
WARNING
■Limitations of the Adaptive High-beam System
Do not rely on the Adaptive High-beam System. Always drive safely, taking care to
observe your surroundings and turning the high beam on or off manually if necessary.
■To prevent incorrect operation of the Adaptive High-beam system
Do not overload the vehicle.

2704-3. Operating the lights and wipers
GS350_200t_GS F_OM_OM30F83E_(EE)
Automatic High Beam

: If equipped
The Automatic High Beam uses an in-vehicle camera sensor to assess the
brightness of streetlights, the lights of vehicles ahead, etc., and automatically
turns the high beam on or off as necessary.
WARNING
■Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Al ways drive safely, taking care to observe
your surroundings and turning the high beam on or off manually if necessary.
■To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.

2804-3. Operating the lights and wipers
GS350_200t_GS F_OM_OM30F83E_(EE)
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●If AUTO mode is selected while the engine switch is in IGNITION ON mode, the wip-
ers will operate once to show that AUTO mode is activated.
●If the temperature of the raindrop sensor is 85°C (185°F) or higher, or -30°C
(-22°F) or lower, automatic operation may not occur. In this case, operate the wip-
ers in any mode other than AUTO mode.
■When the windshield wipers are in temporary operation
AUTO mode cannot be activated even if is pressed.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the windshield
washer fluid reservoir.
●The raindrop sensor judges the amount of raindrops.
An optical sensor is adopted. It may not oper-
ate properly when sunlight from the rising or
setting of the sun intermittently strikes the
windshield, or if bugs etc. are present on the
windshield.
WARNING
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the wind-
shield is subject to vibration in AUTO mode. Take care that your fingers or anything
else do not become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes warm. The
fluid may freeze on the windshield and cause low visibility. This may lead to an accident,
resulting in death or serious injury.

291
4-5. Using the driving support systems
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
●Do not disassemble the camera sensor.
●Do not install an electronic device or device that emits strong electric waves near the
camera sensor.
●Do not modify any components of the vehicle around the camera sensor (inside rear
view mirror, etc.) or ceiling.
●Do not attach any accessories that may obstruct the camera sensor to the hood, front
grille or front bumper. Contact any author ized Lexus retailer or Lexus authorized
repairer, or any reliable repairer for details.
●If a surfboard or other long object is to be mounted on the roof, make sure that it will
not obstruct the camera sensor.
●Do not modify the headlights or other lights.

3104-5. Using the driving support systems
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
■Situations unsuitable for LKA system
Do not use the LKA system in the following situations.
The system may not operate properly and le ad to an accident, resulting in death or
serious injury.
●A spare tire, tire chains, etc. are equipped.
●When the tires have been excessively worn, or when the tire inflation pressure is low.
●Tires which differ by structure, manufacturer, brand or tread pattern are used.
●Objects or patterns that could be mistaken for white (yellow) lines are present on the
side of the road (guardrails, cu rbs, reflective poles, etc.).
●Vehicle is driven on a snow-covered road.
●White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
●Asphalt repair marks, white (yellow) line ma rks, etc. are present due to road repair.
●Vehicle is driven in a temporary lane or restricted lane due to construction work.
●Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow,
freezing, etc.
●Vehicle is driven in traffic lanes other than on highways and freeways.
●Vehicle is driven in a construction zone.
●Vehicle is towing a trailer or another vehicle. (vehicles with towing package)
■Preventing LKA system malfunctions and operations performed by mistake
●Do not modify the headlights or place stickers, etc. on the surface of the lights.
●Do not modify the suspension etc. If the suspension etc. needs to be replaced, con-
tact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer.
●Do not install or place anything on the hood or grille. Also, do not install a grille guard
(bull bars, kangaroo bar, etc.).
●If your windshield needs repairs, contac t any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.

315
4-5. Using the driving support systems
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■Conditions in which functi ons may not operate properly
In the following situations, the camera sensor may not detect white (yellow) lines and var-
ious functions may not operate normally.
●There are shadows on the road that run paralle l with, or cover, the white (yellow) lines.
●The vehicle is driven in an area without white (yellow) lines, such as in front of a tollgate
or checkpoint, or at an intersection, etc.
●The white (yellow) lines are cracked, “Raised pavement marker” or stones are present.
●The white (yellow) lines cannot be seen or are difficult to see due to sand, etc.
●The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
●The traffic lines are yellow (which may be more difficult to recognize than lines that are
white).
●The white (yellow) lines cross over a curb, etc.
●The vehicle is driven on a bright surface, such as concrete.
●The vehicle is driven on a surface that is bright due to reflected light, etc.
●The vehicle is driven in an area where the brightness changes suddenly, such as at the
entrances and exits of tunnels, etc.
●Light from the headlights of an oncoming vehicle, the sun, etc. enters the camera.
●The vehicle is driven where the road diverges, merges, etc.
●The vehicle is driven on a slope.
●The vehicle is driven on a road which t ilts left or right, or a winding road.
●The vehicle is driven on an unpaved or rough road.
●The vehicle is driven around a sharp curve.
●The traffic lane is excessively narrow or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having improper tire
pressure.
●The distance to the preceding vehicle is extremely short.
●The vehicle is moving up and down a large amount due to road conditions during driv-
ing (poor roads or road seams).
●The headlight lenses are dirty and emit a faint amount of light at night, or the beam axis
has deviated.
●The vehicle is struck by a crosswind.
●The vehicle has just changed lanes or crossed an intersection.
●Snow tires, etc. are equipped.
■Warning message
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution while driving. ( P. 524)

319
4-5. Using the driving support systems
4
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
■Before using LDA system
Do not rely solely upon the LDA system. The LDA system does not automatically drive
the vehicle or reduce the amount of attention that must be paid to the area in front of
the vehicle. The driver must always assume full responsibility for driving safely by pay-
ing careful attention to the surrounding conditions and operating the steering wheel to
correct the path of the vehicle. Also, the driver must take adequate breaks when
fatigued, such as from driving for a long period of time.
Failure to perform appropriate driving operat ions and pay careful attention may lead to
an accident, resulting in death or serious injury.
■To avoid operating LDA system by mistake
When not using the LDA system, use the LDA switch to turn the system off.
■Situations unsuitable for LDA system
Do not use the LDA system in the following situations.
The system may not operate properly and le ad to an accident, resulting in death or
serious injury.
●A spare tire, tire chains, etc. are equipped.
●When the tires have been excessively worn, or when the tire inflation pressure is low.
●Tires which differ by structure, manufacturer, brand or tread pattern are used.
●Objects or patterns that could be mistaken for white (yellow) lines are present on the
side of the road (guardrails, cu rbs, reflective poles, etc.).
●Vehicle is driven on a snow-covered road.
●White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
●Asphalt repair marks, white (yellow) line ma rks, etc. are present due to road repair.
●Vehicle is driven in a temporary lane or restricted lane due to construction work.
●Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow,
freezing, etc.
●Vehicle is driven in traffic lanes other than on highways and freeways.
●Vehicle is driven in a construction zone.
■Preventing LDA system malfunctions and operations performed by mistake
●Do not modify the headlights or place stickers, etc. on the surface of the lights.
●Do not modify the suspension etc. If the suspension etc. needs to be replaced, con-
tact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer.
●Do not install or place anything on the hood or grille. Also, do not install a grille guard
(bull bars, kangaroo bar, etc.).
●If your windshield needs repairs, contac t any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.