2016 LEXUS IS250 fuel

446
6-1. Specifications
Fuel information
nFuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Lexus has a fuel tank opening that only
accommodates the special nozzle on unleaded fuel pumps.
nIf your engine knocks
lConsult your Lexus dealer.
lYou may occasionally notice light knocking for a short time while accelerating
or driving uphill. This is normal and there is no need for concern.
Your vehicle must use only unleaded gasoline.
IS250
Premium unleaded gasoline with an octane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking. Per-
sistent knocking can lead to engine damage and should be corrected by
refueling with higher octane unleaded gasoline.
IS350
Premium unleaded gasoline with an octane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking and
significantly reduced performance. Persistent knocking can lead to engine
damage and should be corrected by refueling with higher octane unleaded
gasoline.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.

447
6-1. Specifications
6

Vehicle specifications
nGasoline quality
In very few cases, driveability problems may be caused by the brand of gasoline you
are using. If driveability problems persist, try changing the brand of gasoline. If this
does not correct the problem, consult your Lexus dealer.
nGasoline quality standards
lAutomotive manufacturers in the US, Europe and Japan have developed a
specification for fuel quality called World-Wide Fuel Charter (WWFC) that is
expected to be applied worldwide.
lThe WWFC consists of four categories that are based on required emission
levels. In the US, category 4 has been adopted.
lThe WWFC improves air quality by lowering emissions in vehicle fleets, and
customer satisfaction through better performance.
nLexus recommends the use of gasoline containing detergent additives
lLexus recommends the use of gasoline that contains detergent additives to
avoid build-up of engine deposits.
lAll gasoline sold in the US contains detergent additives to clean and/or keep
clean intake systems.
nLexus recommends the use of cleaner burning gasoline
Cleaner burning gasoline, including reformulated gasoline that contains oxygen-
ates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many
areas.
Lexus recommends the use of cleaner burning gasoline and appropriately blended
reformulated gasoline. These types of gasoline provide excellent vehicle perfor-
mance, reduce vehicle emissions and improve air quality.
nLexus does not recommend blended gasoline
lLexus allows the use of oxygenate blended gasoline where the oxygenate con-
tent is up to 10% ethanol or 15% MTBE.
lIf you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
lLexus DOES NOT recommend the use of gasoline containing methanol.

448
6-1. Specifications
nLexus does not recommend gasoline containing MMT
Some gasoline contains octane enhancing additive called MMT (Methylcyclopen-
tadienyl Manganese Tricarbonyl).
Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con-
taining MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
NOTICE
nNotice on fuel quality
lDo not use improper fuels. If improper fuels are used the engine will be damaged.
lDo not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-
ers causing the emission control system to malfunction.
lDo not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance problems.
lIS250: Use of unleaded gasoline with an octane rating lower than 91 may result
in engine knocking. Persistent knocking can lead to engine damage and should
be corrected by refueling with higher octane unleaded gasoline.
lIS350: Use of unleaded gasoline with an octane rating lower than 91 may result
in engine knocking and significantly reduced performance. Persistent knocking
can lead to engine damage and should be corrected by refueling with higher
octane unleaded gasoline.
nFuel-related poor driveability
If after using a different type of fuel, poor driveability is encountered (poor hot start-
ing, vaporization, engine knocking, etc.), discontinue the use of that type of fuel.
nWhen refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.

454
6-1. Specifications
nTemperature A, B, C
The temperature grades are A (the highest), 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 material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance 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 for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, 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)
Cold tire inflation pres-
sure
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 under that condition
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine

479
Alphabetical index
Engine compartment cover............... 312
Engine coolant
Capacity................................................. 435
Checking ................................................. 317
Preparing and checking
before winter .................................... 200
Engine coolant temperature
gauge ....................................................... 142
Engine immobilizer system .................. 77
Engine oil
Capacity................................................. 434
Checking ................................................. 313
Preparing and checking
before winter .................................... 200
Engine oil maintenance data ............. 316
EPS...............................................................186
Event data recorder..............................381
First-aid kit storage belt......................278
Floor mat................................................... 277
Fluid
Brake ......................................................... 319
Washer ................................................... 324
Fog lights
Switch ........................................................159
Wattage ................................................. 445
Foot well lighting ................................... 247
Front fog lights
Switch ........................................................159
Wattage ................................................. 445
Front passenger occupant
classification system ............................ 95
Front passenger's seat belt
reminder light..................................... 385
Front seats
Adjustment ............................................... 46
Driving position memory ..................48
Seat position memory ........................ 52
Front turn signal lights
Switch........................................................ 139
Wattage ..................................................445
Fuel
Capacity .................................................433
Fuel gauge...............................................142
Fuel pump shut off system............ 380
Gas station information ................. 488
Information ............................................446
Refueling.................................................... 74
Fuel door ..................................................... 74
Fuel filler door ........................................... 74
Fuel pump shut off system ................ 380
Fuses .......................................................... 347
Garage door opener ........................... 281
Gas station information..................... 488
Gauges ...................................................... 142
Glove box ................................................. 251
Glove box light ...................................... 252
F
G

481
Alphabetical index
Light bulbs
Replacing............................................... 363
Wattage ................................................. 445
Lights
Door courtesy lights .........................247
Emergency flasher switch ..............372
Fog light switch.....................................159
Hazard light switch............................372
Headlights switch ................................156
Interior light switch............................ 249
Outer foot lights..................................247
Overhead courtesy light ................247
Personal light switch ........................ 249
Replacing light bulbs ....................... 363
Scuff lighting..........................................247
Shift lever lighting ...............................247
Turn signal lever................................... 139
Vanity lights .......................................... 258
Wattage ................................................. 445
Load capacity .......................................... 199
Maintenance
Do-it-yourself maintenance ......... 304
General maintenance .....................300
Maintenance data ............................. 430
Maintenance requirements .......... 298
Manual transmission ............................. 137
Meter
Instrument panel light control ....... 143
Meters ....................................................... 142
Micro dust and pollen filter ................ 214
Mirrors
Inside rear view mirror .......................65
Side mirror heater .............................. 218
Side mirrors .............................................66
Vanity mirrors ..................................... 258
Moon roof ..................................................... 71
MP3 disc .................................................. 235
Multi-information display .....................151
Odometer................................................. 142
Oil
Engine oil................................................. 313
Opener
Fuel filler door ......................................... 74
Hood ........................................................307
Trunk ........................................................... 43
Outer foot lights
Outer foot lights ................................. 247
Wattage ..................................................445
Outside rear view mirrors
Adjusting and folding..........................66
Mirror position memory ....................48
Outside temperature display ........... 152
Overhead console ............................... 253
Overhead courtesy lights
Overhead courtesy lights.............. 247
Wattage ..................................................445
Overheating, Engine........................... 424
L
M
O

485
Alphabetical index
Warning buzzers
Brake system....................................... 383
Open door ..........................................385
Seat belt reminder ............................385
Warning lights
Anti-lock brake system .................. 384
Brake assist system .......................... 384
Brake system ....................................... 383
Charging system ............................... 384
Electric power steering
warning light ..................................... 384
Low fuel level.......................................385
Malfunction indicator lamp .......... 384
Master warning light ........................385
Open door ...........................................385
Pre-collision system ......................... 384
Pretensioners ...................................... 384
Seat belt reminder light ..................385
SRS airbags .......................................... 384
Tire pressure warning
light........................................................385
Warning messages
AWD system ....................................... 393
Dynamic radar
cruise control .......................393, 395
Engine oil level .................................... 395
Engine oil maintenance.................. 395
Engine oil pressure........................... 392
Hood ....................................................... 395
Intuitive parking assist .........393, 395
Moon roof ............................................. 395
Open door ........................................... 395
Parking brake ...................................... 395
Pre-collision system .............393, 395
Smart access system with
push-button start ........................... 400
Steering lock.........................................393
Tire pressure
warning system................... 393, 395
Trunk ....................................................... 395
Washer fluid ........................................ 395
Washer
Checking ............................................... 324
Preparing and checking
before winter ................................... 200
Switch........................................................ 160
Washing and waxing ........................... 292
Weight
Cargo capacity .................................... 196
Load limits .............................................. 199
Weight.................................................... 430
Wheels ......................................................340
Window glasses ...................................... 69
Window lock switch ............................... 69
Windows
Power windows .....................................69
Rear window defogger.................... 218
Washer .................................................... 160
Windshield wipers................................. 160
Wireless remote control key
Replacing the battery.......................345
WMA disc ............................................... 235
W
*: Refer to the “Navigation System Owner’s Manual”

487
What to do if...
The warning light or indicator
light comes onP. 3 8 3If a warning light turns on or a warning
buzzer sounds...
nWarning lights
oror
P. 3 8 3P. 3 8 4
P. 3 8 5
or
P. 3 8 4P. 3 8 5
P. 3 8 5P. 3 8 5
P. 3 8 4P. 3 8 4
P. 3 8 5P. 3 8 4
P. 3 8 4P. 3 8 5
Brake system warning lightMalfunction indicator lamp
“ABS” warning lightDriver’s seat belt reminder light
Front passenger’s seat belt reminder light
Low fuel level warning lightMaster warning light
SRS warning lightElectric power steering warning light
Open door warning light
Pre-collision system warn-ing light
Charging system warning lightTire pressure warning light
The warning message is dis-
playedP. 3 9 2If the warning message is displayed