service indicator Lexus IS350 2006 Scheduled Maintenance Guide / LEXUS 2006 IS350/250 FROM MAY 2006 PROD. OWNER'S MANUAL (OM53619U)

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6-1. Specifications
■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.
■Lexus does not recommend gasoline containing MMT
Some gasoline contains octane enhancin g additive called MMT (Methylcy clopen-
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.

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Alphabetical index
Power outlet ............................................223
Power windows.........................................45
Pre-collision system (PCS) ................ 149
Radar cruise control ............................. 129
Radiator..................................................... 274
Radio................................................................ 178
RDS (Radio data system).................... 179
Rear sunshade ........................................229
Rear turn signal lights Replacing light bulbs ......................... 314
Wattage .................................................388
Rear view mirror Compass ................................................242
Rear window defogger ........................ 174
Replacing Electronic key battery ......................297
Fuses ........................................................ 299
Light bulbs .............................................. 314
Reporting safety defects for U.S.A. owners .................................... 406
Scuff lighting........................................... 205
Seat belts Adjusting the seat belt ....................... 35
Automatic Locking Retractor (ALR) ...................................................... 36
Child restraint system installation ..............................................75
Cleaning and maintaining the seat belts....................................... 251
Emergency Locking Retractor (ELR) ....................................................... 36
How to wear your seat belt..............34
How your child should wear the seat belt........................................... 37 Pregnant women,
proper seat belt use ......................... 36
Reminder light .................................... 335
Seat belt extenders .............................. 37
Seat belt pretensioners ...................... 35
Seat heaters ................................. 224, 226
Seat position memory ............................. 31
Seat ventilators ...................................... 226
Seating capacity ..................................... 155
Seats Child seats/child restraint system installation.............................. 75
Cleaning ................................................ 250
Driving position memory .................. 28
Front passenger seat position memory ....................................................31
Head restraint ......................................... 33
Properly sitting in the seat ................59
Seat adjustment ..................................... 26
Seat adjustment precautions........... 27
Seat heaters .............................. 224, 226
Ventilated seats .................................. 226
Service reminder indicators ................ 111
Shift lever Automatic transmission ..................... 97
If the shift lever cannot be shifted from P .................................... 361
Manual transmission ........................... 101
Shift lever lighting .................................205
Shift lock system ..................................... 361
Shopping bag hooks............................ 234
Side airbags..................................................61
Side marker lights Switch.......................................................... 118
Side mirror Adjusting and folding.......................... 43
Driving position memory .................. 28
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