
8
GS350_U (OM30C34U)
For your information
Please note that this manual applies to all models and explains all equipment, includ-
ing options. Therefore, you may find some explanations for equipment not installed
on your vehicle.
All specifications provided in this manual are current at the time of printing. How-
ever, because of the Lexus policy of continual product improvement, we reserve the
right to make changes at any time without notice.
Depending on specifications, the vehicle shown in the illustrations may differ from
your vehicle in terms of color and equipment.
Approximately five hours after the engine is turned off, you may hear sound coming
from under the vehicle for several minutes. This is the sound of a fuel evaporation
leakage check and, it does not indicate a malfunction.
A wide variety of non-genuine spare parts and accessories for Lexus vehicles are
currently available in the market. You should know that Toyota does not warrant
these products and is not responsible for their performance, repair, or replacement,
or for any damage they may cause to, or adverse effect they may have on, your
Lexus vehicle.
This vehicle should not be modified with non-genuine Lexus products. Modification
with non-genuine Lexus products could affect its performance, safety or durability,
and may even violate governmental regula tions. In addition, damage or perfor-
mance problems resulting from the modification may not be covered under war-
ranty.
Main Owner’s Manual
Noise from under vehicle af ter turning off the engine
Accessories, spare parts and modification of your Lexus

GS350_U (OM30C34U)
852. Instrument cluster
2
Instrument cluster
■Tire inflation pressure (if equipped)
Outside temperature, average fuel
consumption after re fueling or driv-
ing range can be selected and dis-
played.
If displayed on the drive monitor,
other trip information or warning
messages can be di splayed simulta-
neously.
For display and selection proce-
dures, follow the “Setting up the dis-
plays”.
The information displayed on the drive
monitor will not be displayed on the
trip information screen.
Displays inflation pres sure of each tire.
The inflation pressure of the spare tire will not be dis-
played.
Drive monitor

GS350_U (OM30C34U)
1113-2. Opening, closing and locking the doors and trunk
3
Operation of each component
■When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2 m) of
the vehicle.
●The smart access system with push-button start can be deactivated in advance.
( P. 777)
■Alarm
Using the smart access system with push-but ton start to lock the doors will set the
alarm system. ( P. 7 0 )
■To operate the system properly
●Make sure to carry the electronic key wh en operating the system. Do not get the
electronic key too close to the vehicle wh en operating the system from the outside
of the vehicle.
Depending on the position and holding co ndition of the electronic key, the key
may not be detected correctly and the system may not operate properly. (The
alarm may go off accidentally, or the door lock prevention function may not oper-
ate.)
●Do not leave the electronic key inside the luggage compartment.
The key confinement prevention function may not operate, depending on the loca-
tion of the key (close to a spare tire, th e inside edge of the luggage compartment),
conditions (inside a metal bag, close to me tallic objects) and the radio waves in the
surrounding area. ( P. 1 2 3 )
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors and opening the trunk: Use the mechanical key.
( P. 74 0 )
●Starting the engine: P. 74 1

GS350_U (OM30C34U)
1233-2. Opening, closing and locking the doors and trunk
3
Operation of each component
■Trunk easy closer (vehicles with power trunk opener and closer)
In the event that the trunk lid is left slightly open, the trunk easy closer will automati-
cally close it to the fully closed position.
■Function to prevent the trunk being locked with the electronic key inside
●When all doors are being locked, closing the trunk lid with the electronic key left
inside the trunk will sound an alarm.
In this case, the trunk lid can be opened pressing the trunk release button on the
trunk lid.
●Even when the spare electronic key is put in the trunk with all the doors locked, the
key confinement prevention function can be activated so the trunk can be opened.
In order to prevent theft, take all electron ic keys with you when leaving the vehicle.
●Even when the electronic key is put in the trunk with all the doors are locked, the
key may not be detected depending on the places and the surrounding radio wave
conditions. In this case, the key confinem ent prevention function cannot be acti-
vated, causing the doors to lock when th e trunk is closed. Make sure to check
where the key is before closing the trunk.
●The key confinement prevention function cannot be activated if any one of the
doors is unlocked. In this case, open the trunk using the trunk opener.
■Overload protection function (vehicle s with power trunk opener and closer)
The trunk lid will not operate when excessiv e load is present on the top of the trunk
lid.
■Fall-down protection function (vehicle s with power trunk opener and closer)
While the trunk lid is opening automatically, applying excessive force to it will stop
the opening operation to prevent the trunk lid from rapidly falling down.
■Jam protection function (vehicles with power trunk opener and closer)
While the trunk lid is closing automatically, the trunk lid will stop closing and open if
something gets caught.

GS350_U (OM30C34U)
2354-5. Using the driving support systems
4
Driving
●When driving on winding roads or roads that are uneven
●When driving on rough or unpaved roads
■When changing the tires
Depending on the tires used, sufficient performance may not be maintainable.
■Warning messages for LKA
Warning messages are used to indicate a system malfunction or to inform the driver
of the need for caution while driving. (P. 700, 708)
CAUTION
■Before using the LKA system
Do not rely solely on the LKA system. The LKA system does not drive the vehicle
automatically, nor does it reduce the amount of care you need to take. As such, the
driver must always assume full responsi bility for understanding his/her surround-
ings, for operating the steering wheel to correct the driving line, and for driving
safely.
Inappropriate or negligent driving could lead to an accident.
■To avoid operating the LKA by mistake
Switch the LKA off using the “LKA” switch when not in use.
■Situations unsuitable for LKA
Do not use LKA in any of the following situations.
Otherwise, the system may not function co rrectly and could result in an accident.
●When driving with snow tires, tire ch ains, a spare tire, or similar equipment
●When the tires have been excessively worn, or when the tire inflation pressure is
low.
●When there are objects or structures along the roadside that might be misinter-
preted as lane markers (such as guardrails, curb, reflector posts, etc.)
●When driving on snowy roads
●When pavement lane markers are difficult to see due to rain, snow, fog, etc.
●When there are visible lines on the pavement from road repairs, or if the remains
of old lane markers are still visible on the road
●When driving on slippery roads, such as those covered with rain, ice or snow
●When driving in a lane other than the driving or passing lanes on a freeway or
highway
●When driving on a road with lane closures due to maintenance, or when driving
in a temporary lane
●When emergency towing

260
GS350_U (OM30C34U)
4-5. Using the driving support systems
CAUTION
■When using the rear view monitor system
When backing up, be sure to check visually behind and all around the vehicle
before proceeding.
Observe the following precautions to avoid an accident that could result in death
or serious injuries.
●The rear view monitor system is a supplemental device intended to assist the
driver when backing up. Never depend on the rear view monitor system entirely
when backing up. Always make sure your intended path is clear.
Use caution, just as you would when backing up any vehicle.
●Never back up while looking only at the screen.
The image shown on the screen may differ from the actual state, and you could
collide with another vehicle or obstacles if backing up looking only at the screen,
possibly causing an accident. When backing up, be sure to check in front of and
behind the vehicle, both directly and with mirrors.
●Be sure to back up slowly, depressing the brake pedal to control vehicle speed.
●The instructions given are only guidelines.
When and how much to turn the steering wheel will vary according to traffic con-
ditions, road surface conditions, vehicle condition, etc. when parking. It is neces-
sary to be fully aware of this before using the rear view monitor system.
●When parking, be sure to check that the parking space will accommodate your
vehicle before maneuvering into it.
●Do not use system in the following cases:
• On icy or slick road surfaces, or in snow
• When using tire chains or the compact spare tire
• When the trunk lid is not closed completely
• On roads that are not flat or straight, such as curves or slopes.
●In low temperatures, the screen may darken or the image may become faint. The
image could distort when the vehicle is moving, or you may become unable to
see the image on the screen. Be sure to check direct visually and with mirror all
around the vehicle before proceeding.
●If the tire sizes are changed, the position of the fixation guide lines displayed on
the screen may change.
●The camera uses a special lens. The di stances between objects and pedestrians
that appear in the image displayed on th e screen will differ from the actual dis-
tances. ( P. 2 5 4 )

442
GS350_U (OM30C34U)
5-3. Using the audio system
NOTICE
■Discs and adapters that cannot be used
Do not use the following types of discs, 3 in. (8 cm) disc adapters or Dual Disc.
Doing so may damage the player and/or disc insert/eject function.
●Discs that have a diameter that is not 4.7 in.
(12 cm)
●Low-quality or deformed discs
●Discs with a transparent or translucent
recording area
●Discs that have tape, stickers or CD-R
labels attached to them, or that have had
the label peeled off

629
GS350_U (OM30C34U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indicators is
shown by the “TWI” or “ ” marks, etc.,
molded on the sidewall of each tire.
Check spare tire condition and pres-
sure if not rotated.
Replace or rotate tires in accord ance with maintenance schedules and
treadwear.
Checking tires
1
2
3