2018 Lexus IS350 fuel type

15Pictorial index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 297
To prevent freezing (windshield wiper de-icer)
*. . . . . . . . . . . . . . . . . . . . . . . . P. 412
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 454
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 587
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 483
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 593
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 29 7
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . P. 483
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 556
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 468
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 468
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 588
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 576
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 532
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 190
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 164
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 183
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
4
5
6
7
Light bulbs of the ex terior lights for driving(Replacing method: P. 505, Watts: P. 595)
*: If equipped
8
9
10
11
12
13
14

1664-1. Before driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Breaking in your new Lexus
To extend the life of the vehicle, observin g the following precautions is recommended:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods.
■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 peri odically 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. 596)
■Idling time before engine stop (IS300)
To prevent damage to the turbocharger, allow the engine to idle immediately after high-
load driving.
Driving conditionIdling time
Normal city driving or high-spe ed driving (at the highway speed
limit or recommended speed)
Not necessary
Steep hill driving, co ntinuous driving (race track driving etc.)
Approximately
1 minute

210
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
4-4. Refueling
●Close all the doors and windows,
and turn the engine switch off.
●Confirm the type of fuel.
■Fuel types
→P. 587
■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.
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle

5879-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Engine
IS350 AWD/IS350/
IS300 AWDIS300
Model3.5 L 6-cylinder (2GR-FKS)
engine2.0 L 4-cylinder (8AR-FTS)
engine
Type 6-cylinder V type,
4-cycle, gasoline 4-cylinder in line,
4-cycle, gasoline
(with turbocharger)
Bore and stroke
3.70 ×
3.27 in.
(94.0 × 83.0 mm) 3.39
× 3.39 in.
(86.0 × 86.0 mm)
Displacement 210.9 cu. in. (3456 cm3) 121.9 cu. in. (1998 cm3)
Valve clearance
(engine cold)Automatic adjustment
Drive belt tensionAutomatic adjustment
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.)

5989-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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.

644Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
First-aid kit storage belt ..................... 425
Flat tire ...................................................... 556
Floor mats ................................................... 26
Fluid
Automatic transmission ................... 591
Brake ........................................................592
Washer ...................................................482
Footwell light ........................................... 418 Wattage ................................................. 595
Front passenger occupant classification system ............................ 46
Front personal lights..............................419 Wattage ................................................. 595
Front seats ................................................ 135 Adjustment ............................................. 135
Cleaning ................................................ 456
Correct driving posture .................... 28
Driving position memory ................ 139
Head restraints ..................................... 144
Power easy access system ............ 139
Seat heaters ............................................417
Seat position memory....................... 139
Seat ventilators ......................................417
Front turn signal lights ......................... 190 Replacing light bulbs ....................... 506
Turn signal lever .................................. 190
Wattage ................................................. 595 Fuel............................................................... 210
Capacity................................................. 587
Fuel gauge .................................................81
Fuel pump shut off system .............. 521
Information............................................596
Refueling ..................................................210
Type.......................................................... 587
Warning light ....................................... 524
Fuel consumption Average fuel economy ........................ 104, 105, 107
Current fuel consumption................. 104, 105, 107
Fuel filler door.......................................... 210 If the fuel filler door cannot be opened ........................... 212
Refueling ..................................................210
Fuel gauge ................................................... 81
Fuel pump shut off system .................. 521
Fuses.......................................................... 502
Garage door opener...........................432
Gauges.......................................................... 81
Gear positions......................................... 187
Glove box ................................................422
Glove box light.......................................422
F
G

649Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Paddle shift switches ............................ 185
Parking assist sensors
(intuitive parking assist) ....................251
Parking brake...........................................192
Parking lights ............................................194 Light switch ............................................ 194
Replacing light bulbs ....................... 509
PCS (Pre-Collision System) .............. 221 Warning light .......................................523
Personal lights..........................................419 Wattage ................................................. 595
Pop-up display .......................................... 95
Power easy access system .................139
Power outlet ........................................... 428
Power steering (Electric power steering system)................................. 293 Warning light .......................................523
Power windows .......................................154 Door lock linked window operation ........................... 156
Jam protection function ................... 155
Operation ............................................... 154
Window lock switch.......................... 154
Pre-Collision System (PCS) .............. 221 Warning light .......................................523 Radar cruise control (dynamic
radar cruise control)........................ 239
Radiator.....................................................478
Radio ......................................................... 330
Rear passengers’ seat belt reminder lights ....................................524
Rear personal lights .............................. 419 Wattage .................................................595
Rear seats .................................................. 137 Fold down the seatback................... 137
Luggage security system................. 123
Rear sunshade........................................429 Operation.............................................. 429
Reverse operation feature ............ 429
Rear turn signal lights ...........................190 Replacing light bulbs ....................... 507
Turn signal lever .................................. 190
Wattage .................................................595
Rear view mirror Inside rear view mirror......................149
Outside rear view mirrors ............... 151
Rear window defoggers ...................... 412
Refueling.................................................... 210 Capacity................................................. 587
Fuel types............................................... 587
If the fuel filler door cannot be opened ........................... 212
Opening the fuel tank cap .............. 212
PR
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

656
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)GAS STATION INFORMATION
Auxiliary catch leverTrunk openerFuel filler door
P. 468 P. 122 P. 212
Hood lock release leverTire inflation pressure
P. 468
P. 593
Fuel tank capacity
(Reference) 17.5 gal. (66.3 L, 14.6 Imp. gal.)
Fuel type
Unleaded gasoline only P. 587
Cold tire inflation
pressure P. 593
Engine oil capacity
(Drain and refill —
reference)P. 588
Engine oil type
P. 588