2014 Lexus GS350 service

780
GS350_OM_OM30D41U_(U)
8-1. Specifications
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhanc ing additive called MMT (Methylcyclo-
pentadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoli ne that contains MMT. If fuel containing
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.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or
driving uphill. This is normal and there is no need for concern.
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be dam-
aged.
●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 the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance problems.
●Using unleaded gasoline with an octane number or rating lower than the level
previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■Fuel-related poor driveability
If poor driveability is encountered after us ing a different type of fuel (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.

786
GS350_OM_OM30D41U_(U)
8-1. Specifications
This information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Depart-
ment of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer any questions you may have as you read this
information.
■DOT quality grades
All passenger vehicle tires must conform 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 controlle d conditions on a specified govern-
ment 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 depends upon the actual conditions of their
use. Performance may differ significantly from the norm due to variations in
driving habits, service practices and differences in road characteristics and cli-
mate.
■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 conditions on sp ecified 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) traction.
Uniform Tire Quality Grading

839Alphabetical index
GS350_OM_OM30D41U_(U)
Seats............................................................ 130Adjustment ............................................. 130
Adjustment precautions .................... 131
Child seats/child restraint system installation..............................59
Cleaning .................................................. 612
Driving position memory .................132
Head restraints ..................................... 138
Power easy access system .............132
Properly sitting in the seat ................ 28
Seat heaters ........................................... 581
Seat position memory........................132
Seat ventilators ..................................... 581
Sensor Automatic headlight system .......... 195
Humidity sensor ................................ 365
Inside rear view mirror ..................... 143
Intuitive parking assist ......................240
Lexus night view ................................ 302
LKA (Lane-Keeping Assist) .........239
Radar sensor ................... 224, 281, 291
Rain-sensing windshield wipers .................................................. 203
Service reminder indicators ................76
S-FLOW mode ..................................... 363
Shift lever .................................................. 180 Automatic transmission ...................180
If the shift lever cannot be shifted from P ............. 751
Shift lever light .........................................561
Shift lock system......................................751
Side airbags ............................................... 37
Side marker lights...................................192 Light switch ............................................ 192
Replacing light bulbs ....................... 687
Welcome light illumination control ................................................... 103 Side mirrors .............................................. 144
Adjusting and folding ........................ 144
Blind Spot Monitor ...........................288
Linked mirror function when reversing..................................145
Mirror position memory .................. 132
Side turn signal lights ............................186 Replacing light bulbs ....................... 687
Turn signal lever .................................. 186
Smart access system with push-button start .......................103 Antenna location................................. 105
Entry functions ..................................... 103
Starting the engine .............................. 173
Warning message...............................718
Snow tires ................................................ 308
Spare tire ..................................................736 Inflation pressure................................ 776
Storage location ..................................737
Spark plug ................................................ 772
Specifications......................................... 768
Speedometer .............................................. 81
Steering lock ............................................ 176 Column lock release ......................... 177
Steering lock system warning message........................... 734
Steering wheel ..........................................141 Adjustment................................................141
Audio switches ................................... 492
Heated steering wheel ................... 579
Power easy access system ............. 132
Steering wheel position memory .............................. 132
Stop lights Replacing light bulbs ....................... 687
Storage feature ..................................... 564