change Lexus GS350 2020 Owners Manual

433
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points higher than nor-
mal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches the floor
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4397-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front door), side impact se nsors (front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat belt buckle switch, front passenger occupant
classification system, “AIR BAG ON” indicat or light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle switch, seat belt pretensioner assemblies, airbags,
interconnecting wiring and power sources. (P. 43)
■Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passenger
is not sitting in the seat.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fu el tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficien t or the voltage temporarily drops, the
electric power steering system warning li ght may come on and the warning buzzer may
sound.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Initializing the tire
pressure warning system will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caus ed by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure wa rning system may not function properly
 P. 399
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mo de, have it checked by your Lexus dealer.

4407-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features: P. 542)
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediat ely and contact your Lexus dealer. The vehi-
cle will become extremely unstable during braking, and the ABS system may fail, which
could cause an accident resultin g in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire . Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

4467-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
Indicates that the vehicle is being driven at 3 mph (5 km/h)
or more with the parking brake still engaged.A buzzer also sounds.
 Release the parking brake.
Indicates that the parking brake is engaged with the shift
position not in P
A buzzer also sounds.
 Change the shift position to P.
Indicates a malfunction in the brake hold system
A buzzer also sounds.
 Depress the brake pedal to turn off the brake hold
system.
Have the vehicle inspecte d by your Lexus dealer
immediately.
Indicates that the brake hold system is turned on while on
a steep slope A buzzer also sounds.
 Do not use only the brake hold system on steep
slopes. Be sure to also depress the brake pedal.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

4477-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
Indicates a malfunction in the parking brake system
A buzzer also sounds.
 Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
Indicates an attempt was made to release the parking
brake without depressing the brake pedal
A buzzer also sounds.
 Release the parking brake while depressing the
brake pedal.
Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accel-
erator pedal A buzzer also sounds.
 Momentarily release the accelerator pedal.
Indicates an attempt was made to shift to 1st gear with
the shift position in M while on a slippery surface
The vehicle will not shift down from 2nd gear.
A buzzer also sounds.
 The vehicle will not shift down from 2nd gear.
Warning messageDetails/Actions
(Flashes)
(U.S.A.) (Flashes)
(Canada) (Flashes)
(Flashes)

4647-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
Indicates that the outside temperature is approximately
37 F (3 C) or lower
A buzzer also sounds.
 Drive carefully, as the road may be icy.
(GS350 only)
Indicates that the engine oil is scheduled to be changed
Check the engine oil and change if necessary. After
changing the engine oil, the oil change system
should be reset. ( P. 386)
(The indicator will not work properly unless the oil
maintenance data has been reset.)
(U.S.A. only)
Indicates that all maintenance according to the driven
distance on the maintenance schedule
* should be per-
formed soon. Comes on approximately 4500 miles (7200 km)
after the message has been reset.
 If necessary, perform maintenance.
(GS350 only)
Indicates that the engine o il and oil filter should be
changed
 Have the engine oil and oil filter checked and/or
changed by your Lexus dealer. After changing the
engine oil, the oil change system should be reset.
(  P. 386)
(U.S.A. only)
Indicates that all maintenanc e is required to correspond
to the driven distance on the maintenance schedule
*.
Comes on approximately 5000 miles (8000 km)
after the message has been reset. (The message will
not display properly unless the message has been
reset.)
 Perform the necessary maintenance. Please reset
the message after the maintenance is performed.
( P. 371)
Warning messageDetails/Actions

5047-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 411)
■Alarm
If the trunk is opened using the mechanical key when the alarm system is set, the alarm
may be triggered. ( P. 79)
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed.( P. 204)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features:  P. 542)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P. 157)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof after checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to operate the mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

520
GS350_GS F_OM_OM30J07U_(U)8-1. Specifications
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20
at the next oil change.
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils with a lower value be fore the W allow for easier starting of
the engine in cold weather.
• The 20 in 0W-20 indicates the viscos ity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme lo ad conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
GS F
*: The engine oil capacity is a reference quantity to be used when changing the engine oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.
Outside temperature
Oil capacity
(Drain and refill — reference*)
With filter
Without filter9.3 qt. (8.8 L, 7.7 Imp.qt.)
8.3 qt. (7.9 L, 7.0 Imp.qt.)

GS350_GS F_OM_OM30J07U_(U)
5218-1. Specifications
8
Vehicle specifications
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 5W-30 is not available, SAE
10W-30 oil may be used. However,
it should be replaced with SAE 5W-
30 at the next oil change.
Oil viscosity (5W-30 is explained here as an example): • The 5W in 5W-30 indicates the charact eristic of the oil which allows cold
startability. Oils with a lower value be fore the W allow for easier starting of
the engine in cold weather.
• The 30 in 5W-30 indicates the viscos ity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme lo ad conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
Outside temperature

542
GS350_GS F_OM_OM30J07U_(U)8-2. Customization
Customizable features
■Changing by using the Remote Touch
Press the “MENU” button on the Remote Touch.
Select on the “Menu” screen and select “Vehicle”.
Various setting can be changed. Refer to th e list of settings that can be changed for
details.
■Changing by using the meter control switches
Press or of the meter control switches, select .
Press or of the meter control switches, select the item or the
desired setting, and then press .
To go back to the previous screen, press .
Your vehicle includes a variety of elec tronic features that can be personalized
to your preferences. These preferenc es can be changed by using the meter
control switches, by using the Remote Touch, or at your Lexus dealer.
Customizing vehicle features
1
2
1
2