fuel type Lexus IS250 2011 Key Information / LEXUS 2011 IS250/IS350 OWNERS MANUAL (OM53839U)

TABLE OF CONTENTSIndex
2
1-1. Key informationKeys ...................................................... 24
1-2. Opening, closing and locking the doors and trunk
Smart access system with push-button start .......................... 28
Wireless remote control .............. 40
Doors.................................................... 43
Trunk..................................................... 47
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats ........................................... 51
Driving position memory (driver’s seat) ................................. 53
Head restraints................................. 57
Seat belts ............................................ 60
Steering wheel (manually adjustable type)............................. 67
Steering wheel (power-adjustable type)............ 68
Anti-glare inside rear view mirror ................................................ 70
Outside rear view mirrors ........... 72 1-4. Opening and closing the
windows and moon roof
Power windows................................ 75
Moon roof .......................................... 78
1-5. Refueling Opening the fuel tank cap........... 82
1-6. Theft deterrent system Engine immobilizer system ........ 85
Alarm.................................................... 87
Theft prevention labels (U.S.A.) ............................................. 90
1-7. Safety information Correct driving posture ................ 91
SRS airbags ....................................... 93
Front passenger occupant classification system .................. 104
Child restraint sy stems ............... 109
Installing child re straints ............... 113
1Before driving

Before driving1
23
1-1. Key informationKeys ............................................... 24
1-2. Opening, closing and locking the doors and
trunk
Smart access system with push-button start ................... 28
Wireless remote control ........ 40
Doors ............................................ 43
Trunk ............................................. 47
1-3. Adjustable components
(seats, mirrors,
steering wheel)
Front seats .................................... 51
Driving position memory (driver’s seat) ........................... 53
Head restraints .......................... 57
Seat belts ..................................... 60
Steering wheel (manually adjustable type) ...................... 67
Steering wheel (power-adjustable type) ....... 68
Anti-glare inside rear view mirror ......................................... 70 Outside rear view mirrors...... 72
1-4. Opening and closing the windows and moon roof
Power windows .......................... 75
Moon roof ................................... 78
1-5. Refueling Opening the fuel tank cap ..... 82
1-6. Theft deterrent system Engine immobilizer system........................................ 85
Alarm............................................ 87
Theft prevention labels (U.S.A.)...................................... 90
1-7. Safety information Correct driving posture .......... 91
SRS airbags ................................ 93
Front passenger occupant classification system............ 104
Child restraint systems ......... 109
Installing child restraints........ 113

83
1-5. Refueling
1
Before driving
Closing the fuel tank capWhen replacing the fuel tank cap,
turn it until a clicking sound is
heard.
After releasing your hand, the cap
will turn slightly in the opposite
direction.
■Fuel types
Use unleaded gasoline. (Octane rating 91 [Research Octane Number 96] or
higher)
■Fuel tank capacity (reference)
17.2 gal. (65 L, 14.3 Imp. gal.)
■When the fuel filler door opener is inoperable
The lever can be used to open the fuel filler
door if the fuel filler door cannot be opened
using the inside switch because the battery is
discharged or for any other reason.

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2-1. Driving procedures
■Starting off on a hill (vehicles with an automatic transmission)
Hill-start assist control will operate. (P. 1 8 5 )
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, because the road surface will be especially
slippery.
●Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between th e tires and the road surface, preventing
the steering and brakes from operating properly.
■Breaking in your new Lexus
To extend the life of the vehicle, the following precautions are recommended to
observe:
●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 the 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 sys-
tem needs bedding-down of the brake shoe s periodically or whenever the parking
brake shoes and/or drum are replaced. Have your Lexus dealer perform the bed-
ding down.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the
correct fuel. ( P. 5 1 1 )

430
4-3. Do-it-yourself maintenance
■Engine compartment (type B fuse box)
FuseAmpereCircuit
1SPARE30 ASpare fuse
2SPARE25 ASpare fuse
3SPARE10 ASpare fuse
4FR CTRL-B25 AH-LP UPR, HORN
5A/F15 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
7ALT-S7. 5 ACharging system
8TEL10 ALexus Enform
9STR LOCK25 ASteering lock
10H-LP CLN30 AHeadlight cleaner
11A/C COMP7. 5 AAir conditioning system
12DEICER25 AWindshield wiper de-icer

511
6-1. Specifications
6
Vehicle specifications
Engine
Fuel
IS250IS350
Model4GR-FSE2GR-FSE
Ty p e6-cylinder V type,
4-cycle, gasoline6-cylinder V type,
4-cycle, gasoline
Bore and stroke3.27 3.03 in.
(83.0  77.0 mm)3.70  3.27 in.
(94.0  83.0 mm)
Displacement 152.5 cu.in.
(2500 cm3)
210.9 cu.in.
(3456 cm3)
Drive belt tensionAutomatic adjustment
Fuel typeUnleaded gasoline only
Octane rating91 (Research octane number 96) or higher
Fuel tank capacity
(Reference)17.2 gal. (65 L, 14.3 Imp. gal.)

526
6-1. Specifications
■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 th rough 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 de tergent additives to clean and/or keep
clean intake systems.
■Lexus recommends the use of cleaner burning gasoline
Cleaner burning gasoline, including reform ulated 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
■Lexus does not recommend gasoline containing MMT
Some gasoline contains oc tane 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 inst rument 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 re duced 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 knoc king, 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.

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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