fuel Lexus IS250 2011 Service Manual

526
6-1. Specifications
IS350/250_U
■Gasoline 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.
■Gasoline quality standards
●Automotive 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.
●The WWFC consists of four categories that are based on required emission
levels. In the US, category 4 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets, and
customer satisfaction through better performance.
■Lexus recommends the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to
avoid build-up of engine deposits.
●All gasoline sold in the US contains detergent additives to clean and/or keep
clean intake systems.
■Lexus 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.
■Lexus does not recommend blended gasoline
●Lexus allows the use of oxygenate blended gasoline where the oxygenate con-
tent is up to 10% ethanol or 15% MTBE.
●If you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
●Lexus DOES NOT recommend the use of gasoline containing methanol.

527
6-1. Specifications
6
Vehicle specifications
IS350/250_U
■Lexus 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
■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 convert-
ers causing the emission control system to malfunction.
●Do not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance problems.
●IS250: 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.
●IS350: 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.
■Fuel-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.
■When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.

533
6-1. Specifications
6
Vehicle specifications
IS350/250_U■
Temperature 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-
sureTire 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

567
Alphabetical index
IS350/250_U
Engine compartment cover............. 388
Engine coolantCapacity...................................................515
Checking ............................................... 392
Preparing and checking before winter ......................................195
Engine coolant temperature gauge ........................................................ 151
Engine immobilizer system ................. 85
Engine oil Capacity................................................... 512
Checking ............................................... 389
Preparing and checking before winter ......................................195
Engine oil maintenance data ............. 391
EPS...............................................................185
Event data recorder............................ 459
First-aid kit storage belt......................347
Floor mat.................................................. 346
Fluid Brake ....................................................... 394
Washer ................................................... 399
Fog lights
Switch ........................................................168
Wattage ................................................. 524
Footwell lights.......................................... 315
Front fog lights Switch ........................................................168
Wattage ................................................. 524 Front passenger occupant
classification system .......................... 104
Front passenger's seat belt reminder light...................................... 463
Front seats Adjustment .................................................51
Driving position memory ..................53
Front turn signal lights
Switch.........................................................147
Wattage ..................................................524
Fuel Capacity .................................................... 511
Fuel gauge................................................ 151
Fuel pump shut off system............ 458
Gas station information ..................576
Information ............................................525
Refueling.................................................... 82
Fuel door ..................................................... 82
Fuel filler door ........................................... 82
Fuel pump shut off system.................458
Fuses .......................................................... 423
Garage door opener ......................... 350
Gas station information...................... 576
Gauges ........................................................151
Glove box ................................................320
Glove box light ......................................320
F
G

569
Alphabetical index
IS350/250_U
Light bulbsReplacing............................................... 439
Wattage ................................................. 524
Lights
Door courtesy lights ..........................315
Emergency flasher switch ............. 450
Fog light switch.....................................168
Hazard light switch...........................450
Headlights switch ................................165
Interior light switch.............................. 317
Outer foot lights...................................315
Overhead courtesy light ................. 315
Personal light switch .......................... 317
Replacing light bulbs ....................... 439
Scuff lights ............................................... 315
Shift lever light .......................................315
Turn signal lever................................... 147
Vanity lights ...........................................327
Wattage ................................................. 524
Load capacity .......................................... 194
Maintenance
Do-it-yourself maintenance .........380
General maintenance ..................... 376
Maintenance data ............................ 508
Maintenance requirements ...........374
Manual transmission............................. 145
Meter Instrument panel light control ....... 152
Meters .........................................................151
Micro dust and pollen filter ................ 210 Mirrors
Inside rear view mirror ....................... 70
Side mirror heater ...............................214
Side mirrors ............................................. 72
Vanity mirrors ...................................... 327
Moon roof................................................... 78
MP3 disc .................................................. 234
Multi-information display ................... 160
Noise from under vehicle...................... 19
Odometer...................................................151
Oil Engine oil............................................... 389
Opener Fuel filler door ......................................... 82
Hood ....................................................... 383
Trunk ........................................................... 47
Outer foot lights Outer foot lights .................................. 315
Wattage ..................................................524
Outside rear view mirrors
Adjusting and folding.......................... 72
Mirror position memory ....................53
Outside temperature display ............. 161
Overhead console ............................... 322
Overhead courtesy lights Overhead courtesy lights ............... 315
Wattage ..................................................524
Overheating, Engine............................ 501L
M
N
O

573
Alphabetical index
IS350/250_U
Warning buzzersBrake system ......................................... 461
Open door .......................................... 463
Seat belt reminder ............................ 463
Warning lights Anti-lock brake system .................. 462
Brake assist system .......................... 462
Brake system ......................................... 461
Charging system ............................... 462
Electric power steering
warning light ..................................... 462
Low fuel level....................................... 463
Malfunction indicator lamp .......... 462
Master warning light ........................ 463
Open door ........................................... 463
Pretensioners ...................................... 462
Seat belt reminder light .................. 463
SRS airbags .......................................... 462
Tire pressure warning light........................................................ 463
Warning messages AWD system ......................................... 471
Engine oil level .....................................473
Engine oil maintenance...................473
Engine oil pressure........................... 470
Hood ........................................................473
Intuitive parking assist ........... 471, 473
Moon roof..............................................473
Open door ............................................473
Parking brake .......................................473 Smart access system with
push-button start ............................ 477
Steering lock........................................... 471
Tire pressure warning system...................... 471, 473
Trunk ........................................................ 473
Washer fluid ......................................... 473
Washer
Checking .............................................. 399
Preparing and checking before winter ..................................... 195
Switch........................................................ 169
Washing and waxing ...........................368
Weight Cargo capacity ...................................... 191
Load limits .............................................. 194
Weight.................................................... 508
Wheels ....................................................... 416
Window glasses ...................................... 75
Window lock switch ............................... 75
Windows Power windows ..................................... 75
Rear window defogger.....................214
Washer .................................................... 169
Windshield wipers................................. 169
Windshield wiper de-icer................... 215
Wireless remote control key Replacing the battery.........................421
WMA disc ............................................... 234W

575
What to do if...
IS350/250_U
A warning light or indicator
light comes onP. 4 6 1If a warning light turns on or a warning
buzzer sounds...
■Warning lights
or or
P. 4 6 1P. 4 6 2
P. 4 6 3
or
P. 4 6 2P. 4 6 3
P. 4 6 3P. 4 6 3
P. 4 6 2P. 4 6 2
P. 4 6 3P. 4 6 3
P. 4 6 2P. 4 6 2
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 lightTire pressure warning light
Charging system warning
lightSlip indicator
A warning message is dis-
playedP. 4 7 0If a warning message is displayed

576
IS350/250_U
GAS STATION INFORMATION
Auxiliary catch leverP. 3 8 3Trunk openerP. 4 7Fuel filler door P. 8 2
Hood lock release lever P. 3 8 3Fuel filler door openerP. 8 2Tire inflation pressureP. 5 1 9
Fuel tank capacity
(Reference)17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline only P. 83, 511
Cold tire inflation
pressureP. 5 1 9
Engine oil capacity
(Drain and refill 
reference)
qt. (L, Imp. qt.)
(2WD models) (AWD models)
Without filter 6.2 (5.9
, 5.2)6.3 (6.0, 5.3)
With filter 6.6 (6.3, 5.5) 6.7 (6.4, 5.6)
Engine oil typeToyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 512