fuel Lexus GS350 2018 Workshop Manual

524
GS350_300_GS F_OM_OM30G34U_(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

532
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
Fuel information
■Gasoline quality
In very few cases, driveabilit
y problems may be caused by th e brand of gasoline you are
using. If driveability problems persist, try ch anging the brand of gasoline. If this does not
correct the problem, consult your Lexus dealer.
■Gasoline quality standards
●Automotive manufacturers in the U.S.A., Europe and Japan have developed a specifi-
cation for fuel quality calle d the World-Wide Fuel Charte r (WWFC), which is expected
to be applied worldwide.
●The WWFC consists of four categories that are based on required emission levels. In
the U.S., category 4 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets, and improves
customer satisfaction th rough better performance.
■Recommendation of the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to avoid the
build-up of engine deposits.
●All gasoline sold in the U.S.A. contains minimum detergent additives to clean and/or
keep clean intake systems, per EPA’s lowest additives concentration program.
●Lexus strongly recommends the use of Top Tier Detergent Gasoline. For more informa-
tion on Top Tier Detergent Gasoline and a lis t of marketers, please go to the official
website www.toptiergas.com.
You must only use unleaded gasoline.
Select premium unleaded gasoline with an octane rating of 91 (Research
Octane Number 96) or higher requir ed for optimum engine performance
and fuel economy.
If the octane rating is less than 91, damage to the engine may occur and may
void the vehicle warranty.
At minimum, the gasoline you use should meet the specifications of ASTM
D4814 in the U.S.A..

GS350_300_GS F_OM_OM30G34U_(U)
5338-1. Specifications
8
Vehicle specifications
■Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as reformulated
gasolines, are available in some cities. Thes e fuels are typically acceptable for use, pro-
viding they meet other fuel requirements.
Lexus recommends these fuels, since the form ulations allow for reduced vehicle emis-
sions.
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane ra ting no lower than 91.
●Lexus does not recommend the use of gasoline containing methanol.
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcyclopenta-
dienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline that contains MMT. If fuel containing
MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instru ment cluster may come on. If this happens,
contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or driv-
ing uphill. This is normal and there is no need for concern.
●Use only gasoline containing up to 15% etha-
nol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol, includ-
ing from any pump labeled E30, E50, E85
(which are only some examples of fuel con-
taining more than 15% ethanol).DO NOT use gasoline con-
taining more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

534
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to your
vehicle’s three-way catalytic converters
causing the emission control system to malfunction.
●Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance problems.
●Using unleaded gasoline with an octane numb er or rating lower than the level previ-
ously stated may cause pe rsistent heavy knocking.
At worst, this may lead to engine da mage and will void the vehicle warranty.
■Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is encoun-
tered after using a different type of fuel, discontinue the use of that type of fuel.
■When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

540
GS350_300_GS F_OM_OM30G34U_(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

546
GS350_300_GS F_OM_OM30G34U_(U)8-2. Customization
Some function settings are changed simultaneously with other functions being
customized. Contact your Lexu
s dealer for further details.
Settings that can be changed using the Remote Touch
Settings that can be changed using the meter control switches
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, — = Not available
■Meters and multi-information display ( →P. 100, 108)
GS350/GS300
Customizable features
1
2
3
FunctionDefault
settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*1miles
(MPG US)
miles
(MPG Imperial)
OO—km (L/100 km)
km (km/L)
Eco Driving Indicator Light On
(self-
lighting) Off — O —
switch settingsDrive infor-
mation 1Desired status screen
*2—O—
Drive information screen displayed on
the first screen of
(Drive information 1)
Current fuel
consump- tion
*3—O—Average fuel
economy
(after reset)
Drive information screen displayed on
the second screen of
(Drive information 2)
Distance (range)
*3—O—Average speed
(after reset)
123

GS350_300_GS F_OM_OM30G34U_(U)
5478-2. Customization
8
Vehicle specifications
*1: The default setting varies according to countries.
*2: Some status screens cannot be registered (indicated on the multi-information display)
*3: 2 of the following items: current fuel consumption, average fuel economy (after reset),
average fuel economy (after refuel), average fuel economy (after start), average vehi-
cle speed (after reset), average vehicle spee d (after start), distance (driving range),
distance (after start), elapsed time (after reset), elapsed time (after start), blank
*4:Except F SPORT models
*5:F SPORT models
*6:GS350
*7:GS300
Drive information screen displayed on
the third screen of
(Drive information 3)
Average
fuel
economy (after
refuel)
*3—O—
Elapsed time
(after start)
Pop-up displayOnOff —O—
Accent color*4Color 1Color 2OO—
Clock12-hour
display24-hour display —O—
Needle*5BlueRed—O—White
Rev indicator*55000 rpm
2000 to
6800 rpm
*6
—O—2000 to
6100 rpm*7
Off
Rev peak*5OnOff —O—
FunctionDefault settingCustomized setting123

548
GS350_300_GS F_OM_OM30G34U_(U)8-2. Customization
GS F
FunctionDefault
settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*1miles
(MPG US)
km (km/L)
OO—km (L/100 km)
miles (MPG Imperial)
Eco Driving Indicator LightOn
(self-
lighting)Off—O—
switch settingsDrive infor- mation 1Desired status
screen
*2—O—
Drive information screen displayed on
the first screen of
(Drive information 1)
Current fuel economy
*3—O—Average
fuel
economy
(after reset)
Drive information screen displayed on
the second screen of
(Drive information 2)
Distance (driving
range)
*3—O—Average vehicle speed
(after reset)
Drive information screen displayed on
the third screen of
(Drive information 3)
Average fuel
economy
(after
refuel)
*3—O—
Elapsed time
(after start)
Pop-up displayOnOff—O—
123

GS350_300_GS F_OM_OM30G34U_(U)
5498-2. Customization
8
Vehicle specifications
*1: The default setting varies according to country.
*2: Some status screens cannot be registered (indicated on multi-information display).
*3: 2 of the following items: current fuel cons umption, average fuel economy (after reset),
average fuel economy (after refuel), average fuel economy (after start), average vehi-
cle speed (after reset), average vehicle spee d (after start), distance (driving range),
distance (after start), elapsed time (after reset), elapsed time (after start), blank.
Rev indicatorSetting 2
Setting 1
—O—Setting 3
Off
Rev peakOnOff—O—
Speed indicatorOff30 to 100 mph
(50 to 160 km/h)—O—
Drive mode gauges
SPORT S
SPORT S mode
screenSPORT S+
mode screen—O—
SPORT S+
SPORT S+ mode
screenSPORT S mode screen—O—
CUSTOMIZE
Normal
mode
screen
Eco drive mode screen
—O—SPORT S mode
screen
SPORT S+
mode screen
FunctionDefault settingCustomized setting123

585Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Engine oil maintenance data ........... 366
Engine switch ........................................... 197Auto power off function................... 199
Changing the engine switch modes ................................................... 198
If your vehicle has to be stopped in an emergency ..........425
Starting the engine ..............................197
EPS (Electric Power Steering) ....... 289 Function ................................................. 289
Warning light .......................................435
Warning message .............................. 441
Event data recorder (EDR) ...................10
Expert mode ........................................... 292
First-aid kit storage net ...................... 335
Flat tire Vehicles with spare tire .................. 472
Vehicles without spare tire .......... 483
Floor mats ................................................... 32
Fluid Automatic transmission ..................526
Brake ........................................................ 527
Washer ...................................................392
Footwell light .......................................... 327
Front passenger occupant classification system ............................ 52
Front personal lights............................ 328 Front seats .................................................158
Adjustment............................................. 158
Cleaning................................................. 362
Correct driving posture .................... 34
Driving position memory................ 160
Head restraints .....................................165
Power easy access system ............ 160
Seat heaters .......................................... 323
Seat position memory ...................... 160
Seat ventilators.................................... 323
Front side marker lights....................... 216 Light switch............................................. 216
Replacing light bulbs ....................... 420
Welcome light illumination control................................................... 138
Front turn signal lights .......................... 210 Replacing light bulbs ............ 419, 420
Turn signal lever ...................................210
Wattage ...................................................531
Fuel Capacity................................................... 521
Fuel gauge ...................................... 87, 94
Fuel pump shut off system ............ 433
Information............................................ 532
Type............................................................ 521
Warning light ....................................... 436
Warning messages ............................ 441
Fuel consumption Average fuel consumption............................ 102, 109
Average fuel consumption after refueling .......................... 102, 109
Current fuel consumption.... 102, 109
F