2021 LEXUS LS500 power steering

4367-2. Steps to take in an emergency
■Warning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check the level
of the engine oil, and add if necessary.
This message may appear if the vehicle is
stopped on a slope. Move the vehicle to a
level surface and check to see if the mes-
sage disappears.
■If “Engine Stoppe d Steering Power
Low” is displayed
This message is displa yed if the engine is stopped while driving.
When steering wheel operations are
heavier than usual, gr
ip the steering wheel
firmly and operate it using more force than
usual.
■If “Auto Power Off to Conserve Battery”
is displayed
Power was turned off due to the automatic
power off function. Next time when starting
the engine, increase the engine speed
slightly and maintain that level for approxi-
mately 5 minutes to recharge the battery.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●AFS (Adaptive Front-lighting System)
●The automatic headlight leveling system
●AHB (Automatic High Beam)
■If “Radar Cruise Control Unavailable
See Owner's Manual” is displayed
The dynamic radar cruise control with
full-speed range system is suspended tem-
porarily or until the problem shown in the
message is re solved. (causes and coping
methods: P.207, 213)
■If “Radar Cruise Control Unavailable” is
displayed
The dynamic radar cruise control with
full-speed range system cannot be used
temporarily. Use the system when it
becomes available again.
■If a message that indicates the malfunc-
tion of front camera is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.207, 213, 432)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
●RSA (Road Sign Assist) (if equipped)
●AHB (Automatic High Beam)
If a warning message is dis-
played
The multi-information display
shows warnings for system malfunc-
tions and incorrectly performed
operations, and messages that indi-
cate a need for maintenance.
When a message is displayed, per-
form the appropriate corrective
action for the message.
If a warning message is displayed
again after the appropriate actions
have been performed, contact your
Lexus dealer.
Additionally, if a warning light
comes on or flashes at the same
time that a warning message is dis-
played, take the appropriate cor-
rective action for the warning light.
( P.427)

4708-1. Specifications
■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 con-
trolled conditions on specified govern-
ment 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.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

4888-2. Customization
*1: If equipped
*2: Vehicles without power rear seat
■Heated steering wheel* ( P.336)
*:If equipped
■Illumination ( P.340)
Left-hand rear seat tempera-
ture preference in automatic
mode
*1Standard-2 (cooler) to 2
(warmer)O——O
Right-hand rear seat tem-
perature preference in auto-
matic mode
*1Standard-2 (cooler) to 2 (warmer)O——O
Engine switch linked auto-
matic activation of the
left-hand rear seat heater
*2OffOnO——O
Engine switch linked auto-
matic activation of the
right-hand rear seat heater
*2OffOnO——O
FunctionDefault settingCustomized set- ting
Steering wheel heating pref-
erence in automatic modeStandard-2 (low) to 2 (high)O——O
FunctionDefault settingCustomized set- ting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O——O7.5 seconds
30 seconds
Operation after the engine
switch is turned offOnOff———O
Operation when the doors
are unlockedOnOff———O
FunctionDefault settingCustomized set-tingABCD
ABCD
ABCD

4908-3. Initialization
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle:
List of items to initialize
ItemWhen to initializeReference
PKSB (Parking Support
Brake)
*• After reconnecting or changing the batteryP.288
Intuitive parking assist*• After reconnecting or changing the batteryP.275
Message indicating
maintenance is
required
• After maintenance is performedP.374
Oil maintenance• After maintenance is performedP.387
Tire pressure warning
system
• When the tire inflation pressure is changed, such as when changing trav-
eling speed or load weight.
• When the tire inflation pressure is changed, such as when the tire size is
changed.
• When rotating the tires.
• After performing the transmitter ID code registration procedure.
P.399
Lexus parking assist
monitor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.
Panoramic view moni-
tor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.

505What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. (P.443)
Is the battery discharged?
( P.444)
 It is locked automatically to prevent
theft of the vehicle. ( P.174)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.155)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( P.177)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( P.430)
 The parking brake indicator is on
Is the parking brake released? ( P.186)
Depending on the situation, other
types of warning buzzer may also sound. (
P.427, 436)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.66)
Do one of the following to deactivate
or stop the alarms:
 Except for Canada: Unlock the
doors.
 Except for Canada: Open the trunk.
 For Canada: Unlock the doors or
open the trunk using the entry func-
tion or wireless remote control.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.436)
 When a warning light turns on or a
warning message is displayed, refer
to P.427, 436.
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed

508Alphabetical Index
Parking brake ............................................... 186
Warning light ............................................... 427
Brake assist .................................................... 304
Break-in tips.....................................................165
Brightness control Instrument panel light control ......... 77, 81
BSM (Blind Spot Monitor)....................... 264
Buzzer Hands off steering wheel warning (LTA)......................................................................... 249
C
Card key ............................................................ 98
Care Exterior ...........................................................368
Interior ............................................................... 371
Seat belts.......................................................... 371
Wheels and wheel ornaments............368
Cargo capacity............................................... 172
Cargo net ....................................................... 349
Center Display ...............................................316
Chains ............................................................... 310
Child restraint system Fixed with a LATCH system .................. 53
Fixed with a seat belt...................................50
Front passenger occupant classification system ............................................................. 40
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 55
Child safety Airbag precautions...................................... 34
Battery precautions ....................... 391, 448
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................ 336
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 157
Panoramic moon roof precautions ..... 161 Power window lock switch .................... 155
Power window precautions .................. 154
Rear door child-protectors ................... 105
Removed electronic key battery precau-
tions .................................................................. 411
Seat belt extender precautions.............. 25
Seat belt precautions .................................. 45
Trunk precautions....................................... 106
Child-protectors........................................... 105
Cleaning Exterior........................................................... 368
Interior ...............................................................371
Radar sensor ................................... 203, 209
Seat belts ..........................................................371
Wheels and wheel ornaments ........... 368
Clock ................................................75, 78, 354
Clock light ...................................................... 340
Coat hooks..................................................... 353
Coin holder .................................................... 346
Condenser ..................................................... 389
Console box .................................................. 347
Consumption screen .................................... 93
Cooling system.............................................388 Engine overheating...................................449
Cornering lights .............................................192
Cruise control Dynamic radar cruise control with full-speed range ........................... 251, 254
Cup holders ................................................... 346
Current fuel consumption .......................... 84
Curtain shield airbags .................................. 29
Customizable features ...............................476
D
Daytime running light system .................. 190
Defogger Outside rear view mirrors..................... 324
Rear window ................................................ 324
Windshield .................................................... 324
Differential Front differential oil............. ...................... 460
Rear differential oil. ..................................... 461

509Alphabetical Index
Digital Rearview Mirror..............................143
Dimension ...................................................... 456
Dinghy towing................................................. 173
DisplayCenter Display..............................................316
Dynamic radar cruise control with full-speed range ...................................... 254
Head-up display ........................................... 89
Intuitive parking assist...............................272
LTA (Lane Tracing Assist).................... 244
Multi-information display .......................... 82
Parking Support Brake function (rear pedestrians) .............................................. 296
RCD (Rear Camera Detection) ..........281
RCTA .............................................................. 279
Warning message..................................... 436
Distance until next engine oil change76, 81
Do-it-yourself maintenance .................... 375
Door courtesy lights ................................... 340
Door lock Doors.................................................................102
Smart access system with push-button start ................................................................... 113
Wireless remote control......................... 100
Doors Automatic door lock ing and unlocking
system ........................................................... 106
Door closer ................................................... 105
Door glasses ..................................................153
Door lock.........................................................102
Open door warning bu zzer ...... 103, 105
Outside rear view mirrors ....................... 151
Rear door child-protectors ................... 105
Drive distance .................................................. 84
Drive info 1/Drive info 2 .............................. 84
Driver’s seat position memory Driving position memory.........................133
Memory recall function ............................135
Power easy access system .....................133
Drive-Start Control (DSC) .......................170
Driving Break-in tips .................................................. 165 Correct driving posture ............................ 23
Driving mode select switch ..................299
Procedures .................................................... 164
Winter drive tips ........................................ 309
Driving information display ........................ 84
Driving position memory............................133 Memory recall function............................ 135
Power easy access system .................... 133
Driving range ................................................... 84
Driving support system information display ............................................................................. 87
DRS (Dynamic Rear Steering) .............. 304
DSC (Drive-Start Control) .......................170
Dynamic radar cruise control with full-speed range .............................. 251, 254Warning message .....................................263
Dynamic Rear Steering (DRS) .............. 304
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 304
Eco Driving Indicator............................85, 93
Eco Driving Indicator Light ........................ 85
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 84
Electric Power Steering (EPS) .............. 304 Warning light .............................................. 430
Electronic key .................................................. 98 Battery-saving function.............................. 114
If the electronic key does not operate properly ....................................................... 442
Replacing the battery ................................ 410
Electronic roof sunshade Jam protection function ........................... 160
Operation ....................................................... 158
Electronically Controlled Brake System (ECB) ............................................................ 304
Electronically modulated air suspension ........................................................................... 301
Emergency flashers ..................................... 418
Emergency, in case of If a warning buzzer sounds................... 427

510Alphabetical Index
If a warning light turns on ...................... 427
If a warning message is displayed..... 436
If the battery is discharged .................... 444
If the electronic key does not operate properly....................................................... 442
If the engine will not start ....................... 439
If the fuel filler door cannot be opened ........................................................................... 441
If the vehicle is trapped in rising water ...........................................................................419
If you have a flat tire ..................................438
If you lose your keys................................... 441
If you think something is wrong ......... 425
If your vehicle becomes stuck............. 452
If your vehicle has to be stopped in an
emergency ................................................. 418
If your vehicle needs to be towed ....... 421
If your vehicle overheats ........................ 449
Engine ACCESSORY mode ............................... 177
Compartment .............................................383
Engine compartment cover .................384
Engine cover................................................384
Engine switch................................................. 174
Fuel pump shut off system .................... 426
Hood................................................................. 381
How to start the engine............................ 174
Identification number ............................... 457
If the engine will not start ....................... 439
If your vehicle has to be stopped in an
emergency ................................................. 418
Ignition switch (engine switch) ............. 174
Overheating................................................. 449
Tachometer ............................................ 75, 78
Engine compartment cover .................... 384
Engine coolant Capacity .........................................................459
Checking ...................................................... 388
Preparing and checking before winter.........................................................................309
Engine coolant temperature gauge 75, 78
Engine cover ................................................. 384 Engine immobilizer system ........................ 64
Engine oil
Capacity ........................................................ 458
Checking ...................................................... 386
Preparing and checking before winter......................................................................... 309
Warning light ...............................................428
Engine oil maintenance data .................. 387
Engine switch .................................................. 174 Auto power off function............................ 177
Changing the engine switch modes .. 177
If your vehicle has to be stopped in an emergency .................................................. 418
EPS (Electric Power Steering) .............. 304 Warning light .............................................. 430
Event data recorder (E DR) ........................... 8
F
FCTA (Front Cross Traffic Alert) ......... 235
First-aid kit storage belt ............................350
Flat tire
Tire pressure warning system ............ 395
Floor mats ...........................................................22
Fluid Automatic transmission ......................... 460
Brake ................................................................. 461
Washer .......................................................... 390
Footwell light ................................................. 340
Front automatic air conditioning system .......................................................................... 323
Front Cross Traffic Alert (FCTA) ......... 235
Front passenger occupant classification system .............................................................. 40
Front seats Adjustment ....................................................... 121
Cleaning ...........................................................371
Correct driving posture ............................ 23
Driving position memory ........................ 133
Head restraints............................................. 138
Memory recall function............................ 135
Power easy access system .................... 133
Refresh system ..............................................126