run flat LEXUS LS500 2018 User Guide

4157-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) 7
When trouble arises wheels, drive train, axles, steering and
brakes must be in good condition.
To have your vehicle towed by another
vehicle, the towing eyelet must be
installed to your vehicle. Install the tow-
ing eyelet using the following proce-
dure.
1 Take out the phillips-head screw-
driver and towing eyelet.
Phillips-head screwdriver
Towing eyelet
2 Remove the eyelet cover using a
flathead screwdriver.To protect the bodywork, place a rag
between the screwdriver and the vehicle
body as shown in the illustration. 3 Insert the towing eyelet into the
hole and tighten partially by hand.
4 Tighten down the towing eyelet
securely using a phillips-head
screwdriver or hard metal bar.
5 Securely attach cables or chains to
the towing eyelet. Take care not to damage the vehicle body.
6 Enter the vehicle being towed and
start the engine. If the engine does not start, turn the engine
switch to IGNITION ON mode.
7 Shift the shift position to N and
release the parking brake. ■
While towing
If the engine is not running, the power assist
for the brakes and steering will not function,
making steering and braking more difficult.Emergency towing procedure
A
B

416 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U)  Fluid leaks under the vehicle.
(Water dripping from the air condi-
tioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature gauge
needle continually points higher
than normal.
 Changes in exhaust sound
 Excessive tire squeal when corner-
ing
 Strange noises related to the sus-
pension system
 Pinging or other noises related to
the engine
 Engine missing, stumbling or run-
ning roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking  Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor
If you think something is
wrong If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.
Visible symptoms
Audible symptoms
Operational symptoms

432 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) Take your vehicle to the nearest Lexus
dealer or authorized tire dealer as
soon as possible if any tire goes flat. The vehicle can be driven for a maximum
of 100 miles (160 km) at a speed below 50
mph (80 km/h) after the tire pressure
warning light comes on. ( → P.422)
A run-flat tire has a mark on the
side wall.
■
In some conditions (s uch as at high tem-
peratures)
You cannot continue driving for up to 160
miles (100 km).
■
For the detailed information on run-flat
tires
See the tire warranty booklet.NOTICE■
If “High Power Consumption Partial
Limit On AC/Heater Operation” is
displayed frequently
There is a possible malfunction relating
to the charging system or the battery
may be deteriorating. Have the vehicle
inspected by your Lexus dealer.
If you have a flat tire Your vehicle is not equipped with a
spare tire, but instead you can con-
tinue driving the vehicle with
run-flat tires even if any tire goes
flat.
In this case, slow down and drive
with extra caution.
Run-flat tires

4598-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications
Tire size ( → P.460)
Run-flat tire (RFT) or standard tire ( → P.432)This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A
mark is molded on the side wall of the run-flat tire.
DOT and Tire Identification Number (TIN) ( → P.460)
Location of treadwear indicators ( → P.386)
Tire ply composition and materialsPlies are layers of rubber-coa ted parallel cords. Cords are the strands which form the plies
in a tire.
Radial tires or bias-ply tiresA radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.
TUBELESS or TUBE TYPEA tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a
tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( → P.387)
Maximum cold tire inflation pressure ( → P.454)This means the pressure to which a tire may be inflated.
Uniform tire quality gradingFor details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( → P.387)Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J
K

460 8-1. Specifications
LS500_OM_OM50F54U_(U) An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.
Type A
DOT symbol *
Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Tire size code
Manufacturer’s optional tire type
code (3 or 4 letters)
Manufacturing week
Manufacturing year *
:The DOT symbol cert ifies that the tire
conforms to applicable Federal Motor
Vehicle Safety Standards. 
Type B
DOT symbol * Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Manufacturer’s code
Manufacturing week
Manufacturing year *
: The DOT symbol certifies that the tire
conforms to applicable Federal Motor
Vehicle Safety Standards.
■
Typical tire size information
The illustration indicates typical tire
size.
Tire use (P = Passenger car, T =
Temporary use)
Section width (millimeters)
Aspect ratio (tire height to section
width)
Tire construction code (R = Radial,
D = Diagonal)
Run-flat tire code
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one Typical DOT and Tire Identifica-
tion Number (TIN)
A
B
C
D
E
F
G
A Tire size B
C
D
E
F
A
B
C
D
E
F
G
H

466 8-1. Specifications
LS500_OM_OM50F54U_(U) Pneumatic tire A mechanical device made of rubber, chemicals,
fabric and steel or other materials, that, when
mounted on an automotive wheel, provides the
traction and contains the gas or fluid that sustains
the load
Radial ply tire A pneumatic tire in which the ply cords that extend
to the beads are laid at su bstantially 90 degrees to
the centerline of the tread
Reinforced tire A tire designed to operat e at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width The linear distance between the exteriors of the
sidewalls of an inflated tire, excluding elevations
due to labeling, decoration, or protective bands
Sidewall That portion of a tire between the tread and bead
Sidewall separation The parting of the rubber compound from the cord
material in the sidewall
Snow tire A tire that attains a traction index equal to or
greater than 110, compared to the ASTM E-1136
Standard Referenc e Test Tire, when using the snow
traction test as described in ASTM F-1805-00,
Standard Test Method fo r Single Wheel Driving
Traction in a Straight Li ne on Snow-and Ice-Cov-
ered Surfaces, and which is marked with an Alpine
Symbol ( ) on at least one sidewall
Test rim The rim on which a tire is fitted for testing, and may
be any rim listed as appropriate for use with that tire
Tread That portion of a tire that comes into contact with
the road
Tread rib A tread section running ci rcumferentially around a
tire
Tread separation Pulling away of the tread from the tire carcassTire related term Meaning

5051-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 505Alphabetical Index
Operation........................................................139
Window lock switch ....................................141
Pre-Collision System (PCS)
Function ............................................... 200, 210
PCS OFF switch ..............................203, 213
Warning light ............................................... 424
Warning message.............................210, 217 R
Radar cruise control (dynamic radar cruise
control with full-speed range)... 238, 241
Radiator ........................................................... 382
RCD (Rear camera detection) .............. 256
Warning message..................................... 269
RCD (Rear Camera Detection)
Function ..........................................................268
RCTA
Function .......................................................... 264
Warning message..................................... 265
RCTA (Rear Cross Traffic Alert) ......... 256
RCTA function ............................................. 265
Rear air conditioning system .................. 323
Rear Cross Traffic Alert (RCTA) ......... 264
Rear door sunshades ................................. 346
Rear Multi Operation Panel ...................308
Rear seat position memory ........................ 131
Rear seats .........................................................123
Adjustment...................................................... 123
Head restraints ............................................. 132
Rear seat position memory ..................... 131
Relaxation system........................................ 126
Seat heaters .................................................. 326
Seat ventilators............................................ 326
Rear side marker lights
Light switch ..................................................... 175
Replacing light bulbs............................... 408
Rear sunshades ............................................ 347
Rear turn signal lights
Replacing light bulbs............................... 408
Turn signal lever ...........................................169
Rear view mirror
Inside rear view mirror..............................136 Outside rear view mirrors.......................137
Rear window defogger ...............................314
Refueling
Capacity .........................................................449
Fuel types .......................................................449
If the fuel filler do or cannot be opened
..........................................................................435
Opening the fuel tank cap ..................... 185
Remote Touch .............................................. 304
Replacing
Electronic key battery ............................. 403
Fuses................................................................ 405
Light bulbs .................................................... 408
Tires ................................................................. 396
Resetting the message indicating mainte-
nance is required ...................................... 368
Rev indicator .....................................................74
Rev peak..............................................................74
Road Sign Assist .......................................... 238
RSA (Road Sign Assist) ............................ 238
Run-flat tires....................................... 388, 432
S
Seat belt buckle lights ................................ 330
Seat belt reminder light....................421, 422
Seat belts............................................................ 24
Automatic Locking Retractor................. 26
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt
......................................................................... 365
Easy Access Buckle .................................... 26
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt
............................................................................. 25
Pregnant women, proper seat belt use
............................................................................. 24
Reminder light and buzzer ......... 421, 422
Seat belt extender......................................... 25
SRS warning light........................................ 419
Seat heaters ................................................... 326
Seat position memory......................... 127, 131

5071-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 507Alphabetical Index
Switches
Activating the Automatic High Beam178
Automatic High Beam system..............178
Brake Hold switch ...................................... 173
Door lock switches ...................................... 98
Driving mode select switch ..................289
Driving position memory switches ..... 127
Dynamic radar cruise control with
full-speed range switch ....................... 242
Electronic roof sunshade switches ..... 144
Emergency flashers switch .................... 410
Engine switch................................................ 160
Garage door opener switches .......... 349
Heated steering wheel switch............. 326
HUD (Head-up display) switch............85
Ignition switch............................................... 160
Instrument panel light control switches71,
75
Intuitive parking assist switch...............258
Light switches ................................................ 175
LKA (Lane-Keeping A ssist) switch.. 233
LTA (Lane-Tracing Assist) switch .... 225
Meter control switches ............................... 77
Moon roof switches ................................... 142
“ODO TRIP” switch ........................... 70, 75
Outside rear view mi rror switches ..... 137
Paddle shift switches ....................... 167, 168
Panoramic moon roof switches ........... 144
Parking brake switch .................................170
PCS OFF switch ..............................203, 213
PKSB (Parking Support Brake) switch
..........................................................................272
Power door lock switch ............................ 98
Power window switches ..........................139
RCD (Rear camera detection) switch
.........................................................................268
RCTA switch................................................ 264
Rear door sunshade switch.................. 346
Rear seat heater ......................................... 324
Rear seat position memory switches.. 131
Rear seat ventilator ................................... 324
Rear sunshades switch ........................... 347 Rear window and outside rear view mir-
ror defoggers switch ............................. 313
Seat heater switches.................................326
Seat ventilator switches ..........................326
Snow mode switch......................................167
“SOS” button............................................... 355
Tilt and telescopic steering control switch
........................................................................... 135
Tire pressure warning reset switch...392
Trunk closer switch .................................... 104
Trunk opener main switch...................... 106
Trunk opener switch ................................. 102
Vehicle-to-vehicle distance switch... 242
VSC OFF switch .......................................295
Window lock switch.................................... 141
Windshield wiper and washer switch180
Windshield wiper de-icer switch.........317
T
Tachometer............................................... 69, 72
Rev indicator ................................................... 74
Rev peak............................................................ 74
Tail lights
Light switch .....................................................175
Replacing light bulbs ............................... 408
Theft deterrent system
Alarm...................................................................60
Engine immobilizer system......................58
Tire inflation pressure
Maintenance data ......................................454
Tire inflation pressure display function
......................................................................... 388
Warning light ............................................... 422
Tire information ............................................ 459
Glossary ......................................................... 462
Size ................................................................... 460
Tire identification number..................... 460
Uniform Tire Quality Grading ............. 461
Tire pressure display ... ...............................388
Tire pressure warning system
Function ......................................................... 388
Initializing........................................................392

508 Alphabetical Index
LS500_OM_OM50F54U_(U) Installing tire pressure warning valves
and transmitters ...................................... 392
Registering ID codes ............................... 394
Warning light ............................................... 422
Tires
Chains ............................................................ 300
Checking .......................................................386
If you have a flat tire .................................. 432
Inflation pressure........................................399
Information ....................................................459
Replacing .......................................................396
Rotating tires ............................................... 388
Run-flat tires .................................... 388, 432
Size.................................................................... 454
Snow tires ...................................................... 299
Tire inflation pressu re display function
........................................................................ 388
Tire pressure warning system ............ 388
Warning light ............................................... 422
Top tether strap............................................... 55
Total load capacity ...................................... 448
Towing
Dinghy towing .............................................. 159
Emergency towing ..................................... 412
Towing eyelet ................................................415
Trailer towing ................................................ 159
TRAC (Traction Control) ........................ 294
Traction Control (TRAC) ........................ 294
Trailer towing ..................................................159
Transmission
Automatic transmission ............................163
Driving mode select switch ..................289
M mode ........................................................... 168
Paddle shift switches ....................... 167, 168
Snow mode .................................................... 167
Trip meters ................................................ 70, 75
Trunk .................................................................. 100
Hands Free Power Trunk Lid .............. 103
Internal trunk release lever .................... 105
Power trunk opener and closer ...........102
Smart access system with push-button
start ................................................................. 103 Trunk closer switch .................................... 104
Trunk easy closer........................................ 104
Trunk features ..............................................339
Trunk grip ....................................................... 104
Trunk lid light................................................. 104
Trunk light ....................................................... 104
Trunk opener main switch...................... 106
Trunk opener switch ................................. 102
Wireless remote control ......................... 103
Trunk lid light .................................................. 104
Trunk light ........................................................ 104
Turn signal lights
Replacing light bulbs ............................... 408
Turn signal lever .......................................... 169
U
USB charging ports.................................... 342
V
Vanity lights.................................................... 345
Vanity mirrors ............................................... 345
Variable Gear Ratio Steering (VGRS)294
VDIM (Vehicle Dynamics Integrated Man-
agement)...................................................... 295
Vehicle data recordings ..................................6
Vehicle Dynamics Integrated Manage-
ment (VDIM).............................................. 295
Vehicle identification number ................ 448
Vehicle Stability Control (VSC) ........... 294
Vehicle sway warning display ................... 80
Ventilators (seat ventilators)................... 326
VGRS (Variable Gear Ratio Steering)294
VSC (Vehicle Stability Control) ........... 294
W
Warning buzzers
ABS ...................................................................420
Airbags............................................................. 419
Approach warning.................................... 247
Brake hold .....................................................425

512
LS500_OM_OM50F54U_(U) GAS STATION INFORMATION
Auxiliary catch lever ( → P.375)
Trunk opener ( → P.102)
Fuel filler door opener ( → P.186)
Fuel filler door ( → P.186)
Hood lock release lever ( → P.375)
Tire inflation pressure ( → P.454)Fuel tank capacity (Ref-
erence) 21.7 gal. (82.0 L, 18.0 Imp. gal.)
Fuel type Unleaded gasoline only P.449
P.457
Cold tire inflation pres-
sure P.454
Engine oil capacity
(Drain and refill ⎯ ref-
erence) P.450
Engine oil type P.450A
B
C
D
E
F