run flat LEXUS LS500 2019 User Guide

406 7-1. Essential information
LS500_OM_(U)_1810 7-1.Essential information
Press the switch to flash all of the turn
signal lights. To turn them off, press the switch once
again.
■
Emergency flashers●
If the emergency flashers are used for a
long time while the engine is not running,
the battery may discharge.●
If any of the SRS airbags deploy (inflate)
or in the event of a strong rear impact, the
emergency flashers will turn on automati-
cally.
The emergency flashers will turn off auto-
matically after operating for approxi-
mately 20 minutes. To manually turn the
emergency flashers off, press the switch
twice.
(The emergency flashers may not turn on
automatically depending on the force of
the impact and conditions of the colli-
sion.) 1 Steadily step on the brake pedal
with both feet and firmly depress it. Do not pump the brake pedal repeatedly
as this will increase the effort required to
slow the vehicle.
2 Shift the shift position to N. 
If the shift position is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the engine. 
If the shift position cannot be shifted
to N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the engine, press and hold
the engine switch for 2 consecutive Emergency flashers The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped on the road due
to a breakdown, etc.
Operating instructions If your vehicle has to be
stopped in an emergency Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle

412 7-2. Steps to take in an emergency
LS500_OM_(U)_1810 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

4137-2. Steps to take in an emergency
LS500_OM_(U)_1810 7
When trouble arises  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

4297-2. Steps to take in an emergency
LS500_OM_(U)_1810 7
When trouble arises immediately.
• “Access System with Elec. Key Malfunc-
tion”
• “Shift System Malfunction”
• “P Switch Malfunction”
• “Shift System Unavailable” ●
If any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
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.419)
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

4578-1. Specifications
LS500_OM_(U)_1810 8
Vehicle specifications
Tire size (  P.458)
Run-flat tire (RFT) or standard tire (  P.429)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.458)
Location of treadwear indicators (  P.382)
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.383)
Maximum cold tire inflation pressure (  P.452)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.383)Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J
K

458 8-1. Specifications
LS500_OM_(U)_1810 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

464 8-1. Specifications
LS500_OM_(U)_1810 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_(U)_1810 505Alphabetical Index
Operation........................................................ 142
Window lock switch .................................. 144
Pre-Collision System (PCS)
Function ................................................204, 215
PCS OFF switch .............................. 207, 217
Warning light ................................................. 421 R
Radar cruise control (dynamic radar cruise
control with full-speed range).. 237, 247
Radiator ........................................................... 378
RCD (Rear camera detection) .............. 255
Warning message.....................................268
RCD (Rear Camera Detection)
Function .......................................................... 267
RCTA
Function .......................................................... 263
Warning message..................................... 264
RCTA (Rear Cross Traffic Alert) ......... 255
RCTA function ............................................. 264
Rear automatic air conditioning system
.......................................................................... 323
Rear Cross Traffic Alert (RCTA) ......... 263
Rear door sunshades ................................. 347
Rear Multi Operation Panel ...................308
Rear seat position memory .......................134
Rear seats ......................................................... 126
Adjustment...................................................... 126
Head restraints .............................................135
Rear seat position memory .................... 134
Relaxation system........................................ 129
Seat heaters .................................................. 326
Seat ventilators............................................ 326
Rear side marker lights
Light switch ..................................................... 179
Replacing light bulbs................................404
Rear sunshades ............................................ 348
Rear turn signal lights
Replacing light bulbs................................404
Turn signal lever ........................................... 173
Rear view mirror
Inside rear view mirror..............................139 Outside rear view mirrors...................... 140
Rear window defogger ...............................314
Refueling
Capacity ......................................................... 447
Fuel types ....................................................... 447
If the fuel filler do or cannot be opened
.......................................................................... 432
Opening the fuel tank cap ..................... 189
Remote Touch .............................................. 304
Replacing
Electronic key battery ............................. 399
Fuses.................................................................. 401
Light bulbs .................................................... 404
Tires ................................................................... 391
Resetting the message indicating mainte-
nance is required ...................................... 364
Rev indicator .................................................... 78
Rev peak............................................................. 78
Road Sign Assist ...........................................247
RSA (Road Sign Assist) .............................247
Run-flat tires........................................384, 429
S
Seat belt buckle lights ..................................331
Seat belt reminder light.................... 418, 419
Seat belts............................................................ 24
Automatic Locking Retractor................. 26
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt
........................................................................... 361
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 ..........418, 419
Seat belt extender......................................... 25
SRS warning light........................................ 416
Seat heaters ................................................... 326
Seat position memory....................... 130, 134

5071-1. What to do if... (Troubleshooting)
LS500_OM_(U)_1810 507Alphabetical Index
Brake Hold switch ...................................... 177
Door lock switches .....................................102
Driving mode select switch ..................289
Driving position memory switches .... 130
Dynamic radar cruise control with
full-speed range switch ....................... 238
Electronic roof sunshade switches ..... 147
Emergency flashers switch ...................406
Engine switch.................................................164
Garage door opener switches ......... 350
Heated steering wheel switch............. 326
HUD (Head-up display) switch............ 89
Ignition switch................................................164
Instrument panel light control switches
....................................................................75, 79
Intuitive parking assist switch...............258
Light switches ................................................ 179
LTA (Lane-Tracing Assist) switch ...... 231
Meter control switches ................................81
Moon roof switches ...................................145
“ODO TRIP” switch ............................ 74, 79
Outside rear view mirror switches .... 140
Paddle shift switches ...... .................... 171, 172
Panoramic moon roof switches ........... 147
Parking brake switch ................................. 174
PCS OFF switch .............................. 207, 217
PKSB (Parking Support Brake) switch
........................................................................... 271
Power door lock switch ...........................102
Power window switches .......................... 142
RCD (Rear camera detection) switch
......................................................................... 267
RCTA switch................................................ 264
Rear door sunshade switch.................. 347
Rear seat heater ......................................... 324
Rear seat position memory switches. 134
Rear seat ventilator ................................... 324
Rear sunshades switch ...........................348
Rear window and outside rear view mir-
ror defoggers switch ..............................313
Seat heater switches ................................ 326
Seat ventilator switches .......................... 326 Snow mode switch....................................... 171
“SOS” button...................................................58
Tilt and telescopic steering control switch
........................................................................... 138
Tire pressure warning reset switch.. 388
Trunk closer switch ....................................108
Trunk opener main switch........................ 110
Trunk opener switch ................................. 106
Vehicle-to-vehicle distance switch...238
VSC OFF switch .......................................296
Window lock switch...................................144
Windshield wiper and washer switch184
Windshield wiper de-icer switch........ 318 T
Tachometer................................................73, 76
Rev indicator ................................................... 78
Rev peak............................................................ 78
Tail lights
Light switch .....................................................179
Replacing light bulbs ............................... 404
Theft deterrent system
Alarm...................................................................65
Engine immobilizer system...................... 63
Tire inflation pressure
Maintenance data ......................................452
Tire inflation pressure display function
......................................................................... 384
Warning light ................................................ 419
Tire information ............................................ 457
Glossary ........................................................ 460
Size ................................................................... 458
Tire identification number..................... 458
Uniform Tire Quality Grading ........... 459
Tire pressure display ... ............................... 384
Tire pressure warning system
Function ......................................................... 384
Initializing....................................................... 388
Installing tire pres sure warning valves
and transmitters.......................................387
Registering ID codes .............................. 389
Warning light ................................................ 419

508 Alphabetical Index
LS500_OM_(U)_1810 Tires
Chains .............................................................. 301
Checking ....................................................... 382
If you have a flat tire .................................. 429
Inflation pressure........................................395
Information .................................................... 457
Replacing .........................................................391
Rotating tires ................................................384
Run-flat tires .....................................384, 429
Size.................................................................... 452
Snow tires ..................................................... 300
Tire inflation pressu re display function
.........................................................................384
Tire pressure warning system .............384
Warning light .................................................419
Top tether strap............................................... 55
Total load capacity ....... ............................... 446
Towing
Dinghy towing ...............................................163
Emergency towing ...................................409
Towing eyelet ................................................ 412
Trailer towing .................................................163
TRAC (Traction Control) ........................ 295
Traction Control (TRAC) ........................ 295
Trailer towing ..................................................163
Transmission
Automatic transmission ............................ 167
Driving mode select switch ..................289
M mode ............................................................ 172
Paddle shift switches ...... .................... 171, 172
Snow mode ......................................................171
Trip meters .................................................74, 79
Trunk .................................................................. 104
Hands Free Power Trunk Lid ...............107
Internal trunk release lever .................... 109
Power trunk opener and closer .......... 106
Smart access system with push-button
start ..................................................................107
Trunk closer switch.................................... 108
Trunk easy closer........................................ 108
Trunk features..............................................340
Trunk grip ....................................................... 108 Trunk lid light.................................................108
Trunk light .......................................................108
Trunk opener main switch........................ 110
Trunk opener switch ................................. 106
Wireless remote control ......................... 107
Trunk lid light .................................................. 108
Trunk light ........................................................ 108
Turn signal lights
Replacing light bulbs ............................... 404
Turn signal lever ...........................................173 U
USB charging ports.................................... 343 V
Vanity lights.................................................... 347
Vanity mirrors ............................................... 347
Variable Gear Ratio Steering (VGRS)295
VDIM (Vehicle Dynamics Integrated Man-
agement)...................................................... 295
Vehicle data recordings ..................................6
Vehicle Dynamics Integrated Manage-
ment (VDIM).............................................. 295
Vehicle identification number ................ 446
Vehicle Stability Control (VSC) ........... 294
Ventilators (seat ventilators)................... 326
VGRS (Variable Gear Ratio Steering)295
VSC (Vehicle Stability Control) ........... 294
W
Warning buzzer
Hands off steering wheel alert (LTA)236
LTA (Lane-Tracing Assist) ...................228
Warning buzzers
ABS .....................................................................417
Airbags............................................................. 416
Approach warning.................................... 243
Brake hold ..................................................... 422
Brake Override System ...........................417
Brake system................................................. 415