2018 Lexus GS450h fuel type

15Pictorial index
GS450h_OM_OM30G62U_(U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 207
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 276
To prevent freezing (windshield wiper de-icer)
*. . . . . . . . . . . . . . . . . . . . . . . P. 293
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 338
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 213
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 213
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 472
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 365
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 477
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 27 6
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . P. 365
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 441
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Engine compartment cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 354
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 473
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 46 1
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 4 12
Headlights/front side marker lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
Front turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Tail lights/rear side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
Rear turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 168
Back-up light
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 189
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
4
5
6
7
Light bulbs of the exte rior lights for driving
(Replacing method: P. 391, Watts: P. 480)
*: If equipped
8
9
10
11
12

170
GS450h_OM_OM30G62U_(U)
4-1. Before driving
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system. This type of brake system
needs bedding-down of the brake shoes periodically or whenever the parking brake
shoes and/or drum are replaced. Have your Lexus dealer perform the bedding down
operation.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the cor-
rect fuel. ( →P. 472)

213
GS450h_OM_OM30G62U_(U)4-4. Refueling
4
Driving
Opening the fuel tank cap
●Turn the power switch off and ensure that all the doors and windows are
closed.
●Confirm the type of fuel.
■Fuel types
→ P. 481
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi cle has a fuel tank opening that only accom-
modates the specia l nozzle on unleaded fuel pumps.
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
result in death or serious injury.
●After exiting the vehicle and before opening the fuel door, touch an unpainted metal
surface to discharge any static electricity. It is important to discharge static electricity
before refueling because sparks resulting fr om static electricity can cause fuel vapors
to ignite while refueling.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fu el tank cap is loosened. Wait until the
sound cannot be heard before fully removing the cap. In hot weather, pressurized fuel
may spray out the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their body to come
close to an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances th at are harmful if inhaled.
●Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch any pe rson or object that is statically charged.
This may cause static electricity to build up, resulting in a possible ignition hazard.
■When refueling
Observe the following precautions to prevent fuel overflowing from the fuel tank:
●Securely insert the fuel nozzle into the fuel filler neck.
●Stop filling the tank after the fuel nozzle automatically clicks off.
●Do not top off the fuel tank.

450
GS450h_OM_OM30G62U_(U)
7-2. Steps to take in an emergency
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (→P. 455)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 74)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( →P. 451)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 457)
●The 12-volt battery terminal connections may be loose or corroded.
(→ P. 362)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 457)
●One or both of the 12-volt battery terminals may be disconnected. ( →P. 362)
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
Reasons for the hybrid system not star ting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( →P. 182)
The interior lights and headlights are d im, or the horn does not sound or
sounds at a low volume.
The interior lights and headlights do not turn on, or the horn does not
sound.

472
GS450h_OM_OM30G62U_(U)
8-1. Specifications
Engine
Model3.5 L 6-cylinder (2GR-FXE)
Type6-cylinder V type, 4-cycle, gasoline
Bore and stroke3.70 × 3.27 in. (94.0 × 83.0 mm)
Displacement210.9 cu.in. (3456 cm3)
Valve clearanceAutomatic adjustmentDrive belt tension
Fuel
Fuel typeUnleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity
(Reference)17.5 gal. (66.3 L, 14.6 Imp.gal.)
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output147 kW
Maximum torque202.8 ft•lbf (275 N•m, 28.0 kgf•m)
Hybrid battery (traction battery)
TypeNickel-Metal hydride battery
Voltage7.2 V/module
Capacity6.5 Ah (3HR)
Quantity40 modules
Overall voltage288 V

GS450h_OM_OM30G62U_(U)
4838-1. Specifications
8
Vehicle 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.

533Alphabetical index
GS450h_OM_OM30G62U_(U)
Engine switch .......................................... 182Auto power off function................... 184
Changing the power switch modes ................................................... 183
If your vehicle has to be stopped in an emergency .............................397
Starting the hybrid system .............. 182
EPS (Electric Power Steering) ....... 269 Function ..................................................269
Warning light ...................................... 405
Warning message .............................. 410
EV drive mode.........................................187
Event data recorder (EDR) ...................10
First-aid kit storage net ........................313
Flat tire ........................................................441
Floor mats ................................................... 26
Fluid Brake ........................................................ 477
Hybrid transmission.......................... 476
Washer .................................................... 361
Footwell light .......................................... 304
Front passenger occupant classification system ............................ 46
Front personal lights............................305
Front seats .................................................143 Adjustment ............................................. 143
Cleaning ................................................ 340
Correct driving posture .................... 28
Driving position memory ................ 145
Head restraints ..................................... 150
Power easy access system ............ 145
Seat heaters ......................................... 302
Seat position memory....................... 145
Seat ventilators ................................... 302 Front side marker lights..................... 200
Light switch...........................................200
Replacing light bulbs ....................... 393
Welcome light illumination control.................................................... 123
Front turn signal lights .......................... 195 Replacing light bulbs ........... 392, 393
Turn signal lever ...................................195
Wattage ................................................ 480
Fuel............................................................... 213 Capacity..................................................472
Fuel gauge ...............................................88
Information..............................................481
Refueling .................................................. 213
Type...........................................................472
Warning light .......................................406
Warning messages ............................410
Fuel consumption Average fuel consumption ...............97
Average fuel consumption after refueling .......................................97
Current fuel consumption.................97
Fuel filler door.......................................... 213 Refueling .................................................. 213
When the fuel filler door cannot be opened ........................... 215
Fuses.......................................................... 384
Garage door opener............................ 321
Gauges........................................................ 88
Glove box ............................................... 308
Glove box light...................................... 308
F
G

539Alphabetical index
GS450h_OM_OM30G62U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 243
Radiator .................................................... 359
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 298
Rear door sunshades ........................... 318
Rear personal lights.............................305
Rear side marker lights ......................200 Light switch .......................................... 200
Replacing light bulbs ........................393
Welcome light illumination cont rol ..........................123
Rear seat heaters.................................. 302
Rear sunshade ........................................ 318 Operation ............................................... 318
Reverse operation feature.............. 319
Rear turn signal lights .......................... 195 Replacing light bulbs ........................393
Turn signal lever .................................. 195
Rear view mirror Inside rear view mirror ..................... 154
Outside rear view mirrors .............. 156
Rear view monitor system
*
Rear window defoggers .................... 293
Refueling ....................................................213 Capacity ................................................. 472
Fuel types ............................................... 472
Opening the fuel tank cap...............214
When the fuel filler door cannot be opened .......................... 215 Regenerative braking............................. 67
Remote Touch
*.................................... 282
Replacing Electronic key battery ..................... 382
Fuses ........................................................384
Light bulbs...............................................391
Tires ............................................................ 441
Reporting safety defects for U.S. owners ....................................510
Resetting the message indicating maintenance is required .................344
Rev indicator ............................................. 90
Rev peak ..................................................... 90
Road accident cautions ......................... 72
Seat belts .................................................... 30 Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system installation ............................................. 59
Cleaning and maintaining the seat belt ......................................... 341
Emergency Locking Retractor (ELR) ................................... 31
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer ...........406
Seat belt extender .................................32
Seat belt pretensioners........................ 31
SRS warning light .............................. 404
R
S
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.