2012 Lexus IS250 fuel type

TABLE OF CONTENTSIndex
2
IS350/250_U
1-1. Key informationKeys ...................................................... 28
1-2. Opening, closing and locking the doors and trunk
Smart access system with push-button start .......................... 33
Wireless remote control .............. 45
Doors.................................................... 48
Trunk..................................................... 52
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats .......................................... 56
Driving position memory ............ 58
Head restraints................................. 62
Seat belts ............................................ 65
Steering wheel (manually adjustable type)............................. 72
Steering wheel (power-adjustable type)............ 73 Anti-glare inside rear view
mirror ................................................ 75
Outside rear view mirrors ........... 77
1-4. Opening and closing the windows and moon roof
Power windows............................... 80
Moon roof .......................................... 83
1-5. Refueling Opening the fuel tank cap........... 87
1-6. Theft deterrent system Engine immobilizer system ......... 90
Alarm.................................................... 92
Theft prevention labels (U.S.A.) ............................................. 95
1-7. Safety information Correct driving posture ............... 96
SRS airbags ....................................... 98
Front passenger occupant classification system .................. 109
Child restraint systems ................. 114
Installing child restraints .............. 118
1Before driving
For vehicles with a navigation system, refer to the “Navigation System Owner’s
Manual” for information regarding the equipment listed below.
• Navigation system
• Air conditioning
•Climate control
• Rear view monitor system • Audio/video system
• Rear window and outside rear view
mirror defogging
• Intuitive parking assist

Before driving1
27
IS350/250_U
1-1. Key informationKeys .............................................. 28
1-2. Opening, closing and locking the doors and
trunk
Smart access system with push-button start ................... 33
Wireless remote control ......... 45
Doors ........................................... 48
Trunk ............................................. 52
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats ................................... 56
Driving position memory ....... 58
Head restraints .......................... 62
Seat belts ..................................... 65
Steering wheel (manually adjustable type) ...................... 72
Steering wheel (power-adjustable type) ....... 73
Anti-glare inside rear view mirror ......................................... 75
Outside rear view mirrors ...... 77 1-4. Opening and closing the
windows and moon roof
Power windows .......................... 80
Moon roof ................................... 83
1-5. Refueling Opening the fuel tank cap ..... 87
1-6. Theft deterrent system Engine immobilizer system ........................................ 90
Alarm............................................ 92
Theft prevention labels (U.S.A.)...................................... 95
1-7. Safety information Correct driving posture ......... 96
SRS airbags ................................ 98
Front passenger occupant classification system............ 109
Child restraint systems .......... 114
Installing child restraints........ 118

88
1-5. Refueling
IS350/250_U
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 inoperableThe 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.

442
4-3. Do-it-yourself maintenance
IS350/250_U■
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 ATEL
9STR LOCK25 ASteering lock
10H-LP CLN30 AHeadlight cleaner
11A/C COMP7. 5 AAir conditioning system
12DEICER25 AWindshield wiper de-icer

523
6-1. Specifications
6
Vehicle specifications
IS350/250_U
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.)

538
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.

540
6-1. Specifications
IS350/250_U
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.

592
IS350/250_U
GAS STATION INFORMATION
Auxiliary catch leverP. 3 9 4Trunk openerP. 5 2Fuel filler door P. 8 7
Hood lock release lever P. 3 9 4Fuel filler door openerP. 8 7Tire inflation pressureP. 5 3 1
Fuel tank capacity
(Reference)17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline only P. 88, 523
Cold tire inflation
pressureP. 5 3 1
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. 524