2012 Lexus IS250 service

539
6-1. Specifications
6
Vehicle specifications
■Lexus does not recommend blended gasoline
●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 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.
●Use only gasoline containing a maxi-
mum of 10% ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 10% etha-
nol, including from any pump labeled
E15, E30, E50, E85 (which are only
some examples of fuel containing more
than 10% ethanol).DO NOT use gasoline contain-
ing more than 10% ethanol.
(15% ethanol)
(50% ethanol)
(85% ethanol)

545
6-1. Specifications
6
Vehicle specifications
■DOT quality grades
All passenger vehicle tires must co nform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■ Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires de pends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire's ability to stop on wet pavement as measured
under controlled condit ions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.

585
Alphabetical index
Rear turn signal lightsReplacing light bulbs ......................... 451
Wattage ................................................. 536
Rear view mirror Compass ............................................... 366
Rear window defogger*.....................224
Replacing Electronic key battery ..................... 433
Fuses ........................................................ 435
Light bulbs .............................................. 451
Reporting safety defects for U.S. owners ......................................... 562
Safety Connect ..................................... 370
Scuff lights ............................................... 325
Seat belts Adjusting the seat belt ....................... 66
Automatic locking retractor.............67
Child restraint system installation ............................................. 118
Cleaning and maintaining the seat belts..................................... 383
Emergency locking retractor ..........67
How to wear your seat belt............. 65
How your child should wear the seat belt.......................................... 68
Pregnant women, proper seat belt use..........................67
Reminder light......................................473
Seat belt extenders .............................. 68
Seat belt pretensioners...................... 66 Seat heaters ..........
...................... 345, 348
Seat ventilators ......................................348
Seating capacity ....................................205
Seats Adjustment ...............................................56
Adjustment precautions .................... 57
Child seats/child restraint system installation.............................. 118
Cleaning .................................................382
Driver’s seat position memory ...... 58
Head restraint ......................................... 62
Properly sitting in the seat ................96
Seat heaters ............................. 345, 348
Ventilated seats ................................. 348
Service reminder indicators ............. 164
Shift lever Automatic transmission ................... 146
If the shift lever cannot be shifted from P .................................. 503
Manual transmission ......................... 152
Shift lever lights...................................... 325
Shift lock system ................................... 503
Shopping bag hooks............................ 357
Side airbags................................................98
Side marker lights Switch......................................................... 172
Side mirror Adjusting and folding...........................77
Mirror position memory ................... 58
“SOS” button .......................................... 370
S
*: For vehicles with a navigation system, refe r to the “Navigation System Owner’s Manual”.