engine oil Lexus GS300 2019 Owner's Guide

4567-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
(If equipped)
Indicates a malfunction in the BSM (Blind Spot Monitor)
systemA buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates abnormal engine oil pressure
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Indicates that the automatic transmission fluid tempera-
ture is too high
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Warning messageDetails/Actions

4637-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
Indicates that engine oil level is low
This message may ap pear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to
see if the message disappears.
A buzzer also sounds.
 Check the level of engine oil, and add if necessary.
Indicates a malfunction in:
• The Automatic High Beam system (if equipped);
• The AFS (Adaptive Front-lighting System) (if
equipped); or
• The LED headlight system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(GS F for Canada only)
Indicates that the brake pads are worn out
A buzzer also sounds
 Have the vehicle inspected visually by your Lexus
dealer.
Warning messageDetails/Actions

4667-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(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/GS300 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. 385)
(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/GS300 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. 385)
(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. 368)
Warning messageDetails/Actions

526
GS350_300_OM_OM30G96U_(U)8-1. Specifications
GS350/GS300
*: 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.
■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
Lubrication system
GS350GS3002WDAWD
Oil capacity
(Drain and refill 
reference
*)
With filter
Without filter
6.0 qt.
(5.7 L, 5.0 Imp.qt.)
5.8 qt.
(5.5 L, 4.8 Imp.qt.)6.8 qt.
(6.4 L, 5.6 Imp.qt.)
6.3 qt.
(6.0 L, 5.3 Imp.qt.)4.9 qt.
(4.6 L, 4.0 Imp.qt.)
4.5 qt.
(4.3 L, 3.8 Imp.qt.)

GS350_300_OM_OM30G96U_(U)
5278-1. Specifications
8
Vehicle 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.)

528
GS350_300_OM_OM30G96U_(U)8-1. 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

530
GS350_300_OM_OM30G96U_(U)8-1. Specifications
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.
Electrical system
Battery
Open voltage at 68 F (20 C):12.3 V or higher
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A
Automatic transmission
Fluid capacity*
GS350 (2WD)10.0 qt. (9.5 L, 8.4 Imp.qt.)
GS350 (AWD)10.6 qt. (10.0 L, 8.8 Imp.qt.)
GS3009.2 qt. (8.7 L, 7.7 Imp.qt.)
GS F11.8 qt. (11.2 L, 9.9 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Front differential (AWD models)
Oil capacity0.74 qt. (0.70 L, 0.62 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil GL-5 or equivalent
Above 0 F (-18 C): SAE90
Below 0 F (-18 C): SAE80W or SAE80W-90

GS350_300_OM_OM30G96U_(U)
5318-1. Specifications
8
Vehicle specifications
GS350/GS300
GS F
*1: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.Use Lexus approved “Toyota Genuine Differen tial Gear Oil” or an equivalent oil of
matching quality to satisfy the above specification. Please contact your Lexus dealer
for further details.
*2: Torque transfer modules are located on the ri ght and left sides of the rear differential
unit.
*3: Using torque transfer module fluid other than “Toyota Genuine ATF WS” may cause deterioration of performance, vibration, or ultimately damage the TVD system of your
vehicle.
*: Minimum pedal clearance when depressed wi th a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
Rear differential
Oil capacity1.43 qt. (1.35 L, 1.19 Imp.qt.)
Oil type and viscosity
Vehicles without LSD (Limited Slip Differential):
Toyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
*1
Vehicles with LSD (Limited Slip Differential):
Toyota Genuine Differential gear oil LX 75W-85 GL-5
or equivalent
*1
DifferentialTorque transfer module*2
Oil capacity 1.43 qt. (1.35 L, 1.19 Imp. qt.)
Left-hand side:
0.74 qt. (0.70 L, 0.62 Imp. qt.)
Right-hand side:
0.74 qt. (0.70 L, 0.62 Imp. qt.)
Oil type and
viscosity Toyota Genuine Differential gear
oil LT
75W-85 GL-5 or equivalent
*1Toyota Genuine ATF WS*3
Brakes
Pedal clearance*GS350/GS3004.0 in. (102 mm) Min.
GS F4.4 in. (112 mm) Min.
Pedal free play0.04 — 0.24 in. (1.0 — 6.0 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3

544
GS350_300_OM_OM30G96U_(U)8-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highes
t), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory test
wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows

588Alphabetical index
GS350_300_OM_OM30G96U_(U)
Eco drive mode ...................................... 281
Eco Driving Indicator...............................91
Eco driving meter .................................... 98
EDR (Event data recorder) ...................10
Electric Power Steering (EPS) ....... 297Function .................................................. 297
Warning light ...................................... 438
Warning message ............................. 444
Electronic key ......................................... 138 Battery-saving function .................... 158
If the electronic key does not operate properly............................ 504
Replacing the battery .........................412
Emergency, in case of If a warning buzzer sounds........... 437
If a warning light turns on............... 437
If a warning message is displayed ........................................ 444
If the electronic key does not operate properly ....... 504
If the engine will not start............... 500
If the vehicle is trapped in rising water ........................................428
If the parking brake cannot be released ....................... 502
If the vehicle battery is discharged ........................................ 507
If you have a flat tire ............. 475, 486
If you think something is wrong...............................................435
If your vehicle becomes stuck ...... 518
If your vehicle has to be stopped in an emergency ............................. 427
If your vehicle needs to be towed .......................................429
If your vehicle overheats ................. 512 Emergency flashers .............................426
Emergency tire puncture repair
kit ............................................................. 486
Engine Accessory mode ............................... 204
Compartment ..................................... 378
Engine switch ...................................... 203
Hood........................................................ 375
How to start the engine.................. 203
Identification number....................... 524
Ignition switch (engine switch.................................. 203
Overheating........................................... 512
Engine compartment cover...............381
Engine coolant ...................................... 388 Capacity................................................. 529
Checking .............................................. 388
Preparing and checking before winter ....................................304
Engine coolant temperature gauge .............................................. 92, 100
Engine immobilizer system .................. 77
Engine oil ................................................. 383 Capacity................................................. 526
Checking ...............................................383
Oil level warning message ........... 444
Oil pressure warning message........................... 444
Preparing and checking before winter ....................................304
E