service Lexus GS350 2015 TIPS FOR THE NAVIGATION SYSTEM / LEXUS 2015 GS350 (OM30E15U) Owner's Manual

548
GS350_OM_OM30E15U_(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.

554
GS350_OM_OM30E15U_(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

607Alphabetical index
GS350_OM_OM30E15U_(U)
Seats.............................................................134Adjustment ............................................. 134
Adjustment precautions .................. 135
Child seats/child restraint system installation..............................59
Cleaning ................................................ 380
Driving position memory ................ 136
Head restraints ......................................142
Power easy access system ............ 136
Properly sitting in the seat ................ 28
Seat heaters ..........................................349
Seat position memory....................... 136
Seat ventilators ....................................349
Sensor Automatic headlight system .......... 199
Humidity sensor ...................................317
Inside rear view mirror ......................147
Intuitive parking assist
*
Lexus night view .................................282
LKA (Lane-Keeping Assist) ......... 234
Radar sensor ................... 228, 261, 271
Rain-sensing windshield wipers ...................................................207
Service reminder indicators ................76
S-FLOW mode ...................................... 315
Shift lever .................................................. 184 Automatic transmission ................... 184
If the shift lever cannot be shifted from P ............. 519
Shift lever light ....................................... 329
Shift lock system..................................... 519
Side airbags ............................................... 37
Side display ............................................. 298 Side marker lights .................................. 196
Light switch.............................................196
Replacing light bulbs .......................455
Welcome light illumination control....................................................107
Side mirrors .............................................. 148 Adjusting and folding ........................148
Blind Spot Monitor ........................... 268
Linked mirror function when reversing..................................149
Mirror position memory ..................136
Side turn signal lights ............................190 Replacing light bulbs .......................455
Turn signal lever .................................. 190
Smart access system with push-button start ....................... 107 Antenna location................................. 109
Entry functions ......................................107
Starting the engine .............................. 177
Warning message.............................486
Snow tires ................................................ 288
Spare tire ................................................. 504 Inflation pressure................................ 544
Storage location ................................ 505
Spark plug ............................................... 540
Specifications......................................... 536
Speedometer .............................................. 81
Steering lock ........................................... 180 Column lock release .......................... 181
Steering lock system warning message...........................502
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.