ignition lexus LC500h 2018 / LEXUS 2018 LC500,LC500H (OM11405U) Workshop Manual

3417-2. Steps to take in an emergency
LC500_LC500h_OM_OM11405U_(U)
7
When trouble arises
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily drops, the
electric power steering syst em warning light may come on and the warning buzzer may
sound.
■Tire pressure warning light
When a malfunction occurs in the tire pressu re warning system, the tire pressure warning
light blinks to warn the driver . However, if the warning light blinks for 1 minute, and then
remains illuminated, making it difficult to determine whether the warning light is blinking,
turn the engine switch from off to IGNITION ON mode and
check if the warning light blinks.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pres-
sure warning reset switch will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warnin g light may come on due to natural causes such as natural air leaks
and tire inflation pressure chan ges caused by temperature. In this case, adjusting the tire
inflation pressure will turn off the warning light (after a few minutes).
■Conditions that the tire pressure wa rning system may not function properly
 P.303
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning lig ht frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mode , have it
checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard du e to being in a noisy location or audio sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features:  P.391)
WARNING
■If both the ABS and the brake sy stem warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehicle
will become extremely unstable during brakin g, and the ABS system may fail, which could
cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
When the light comes on in yellow, the assist to the power steering is restricted. When the
light comes on red, the assist to the power steering is lost and handling operations of the
steering wheel become extremely heavy. When steering wheel operations are heavier
than usual, grip the steering wheel firmly and operate it using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of vehi-
cle control and result in death or serious injury.

3567-2. Steps to take in an emergency
LC500_LC500h_OM_OM11405U_(U)
■Locking and unlocking the door
1 Push in the depression on the front
edge of the driver’s door handle.
2 Insert the mechanical key while
pulling on the driver’s door handle.
3 Turn the key in order to perform the
following operations.
Locks both side doors
Closes the windows
* (turn and
hold)
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once again
within 5 seconds unlocks the other door.
Opens the windows* (turn and
hold)
*: This setting must be customized at your Lexus dealer.
■Opening the trunk
Unlock the doors, and press the trunk opener switch.
1
Depress the brake pedal.
2 Touch the Lexus emblem side of the
electronic key to the engine switch
.
When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON
mode .
When the smart access system with push-
button start is deactivated in customization
setting, the engine switch
will turn to ACCESSORY mode.
A
B
C
D
WARNING
■When using the mechanical key and
operating the power windows
Operate the power window after check-
ing to make sure that there is no possibil-
ity of any passenger having any of their
body parts caught in the window.
Also, do not allow children to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window.
Starting the engine tem>

3617-2. Steps to take in an emergency
LC500_LC500h_OM_OM11405U_(U)
7
When trouble arises
5 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.
6 Open and close any of the door of
your vehicle with the engine switch
off.
7 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by
turning the engine switch switch> to IGNITION ON mode
.
8 Once the vehicle’s engine system> has started, remove the
jumper cables in the exact reverse
order from which they were con-
nected.
9 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to tits original position.
Once the engine starts,
have the vehicle inspected at your Lexus
dealer as soon as possible.
■Starting the engine
when the 12-volt battery is discharged
The engine cannot be
started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is
stopped.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When the 12-volt batte ry is removed or
discharged
●Information stored in the ECU is cleared.
When the 12-volt battery is depleted,
have the vehicle inspected at your Lexus
dealer.
●Some systems may requ ire initialization.
(  P.403)
■When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are
removed, the information stored in the
ECU is cleared. Before removing the 12-
volt battery terminals, contact your Lexus
dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradually even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the engine
may be unable to start. (The 12-volt battery
recharges automatically during driving.)
■When recharging or replacing the 12-
volt battery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
●The engine may not start
on the first attempt after the 12-volt bat-
tery has recharged but will start normally
after the second attempt. This is not a
malfunction.
●The engine switch mode
is memorized by the vehicle. When the
12-volt battery is reconnected, the system
will return to the mode it was in before
the 12-volt battery was discharged.
Before disconnecting the 12-volt battery,
turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the
12-volt battery discharged, be especially
careful when reconnecting the 12-volt
battery.

3768-1. Specifications
LC500_LC500h_OM_OM11405U_(U)
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container label:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you should use.
■Spark plug
Cooling system
Capacity
LC50012.8 qt. (12.1 L, 10.6 Imp.qt.)
LC500h
Gasoline engine
11.5 qt. (10.9L, 9.6 Imp.qt.)
Power control unit
2.4 qt. (2.3L, 2.0 Imp.qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with long-
life hybrid organic acid technology
Do not use plain water alone.
Ignition system
LC500LC500h
MakeDENSO FK20HBR-J8DENSO FK20HBR8
Gap0.031 in. (0.8 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

4028-2. Customization
LC500_LC500h_OM_OM11405U_(U)
■Vehicle customization
●When the Smart access system with
push-button start is off, the entry unlock
function cannot be customized.
●When the doors remain closed after
unlocking the doors and the timer acti-
vated automatic door lock function acti-
vates, signals will be generated in
accordance with the operation buzzer
volume and operational signal (Emer-
gency flashers) function setting.
●Some settings can be changed using a
switch or the audio system screen. If a
setting is changed using a switch, the
changed setting will not be reflected on
the audio system screen until the engine
switch is turned off and
then to IGNITION ON mode mode>.
Chassis control in custom modeNormalSportO——Comfort
Air conditioning operation in cus-
tom modeNormalEcoO——
FunctionDefault settingCustomized settingABC

418What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
 If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.354)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.354)
 Is the electronic key battery weak or
depleted? ( P.318)
 Is the engine switch
in IGNITION ON mode mode>?
When locking the doors, turn the engine
switch off. ( P.142, 146)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio wave. (
P.108)
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.105)
 Did you press the engine switch
while firmly
depressing the brake pedal?
( P.140, 143)
 Is the shift position in P? ( P.149,
155)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.107)
 Is the steering wheel unlocked?
( P.141, 144)
 Is the electronic key battery weak or
depleted?
In this case, the engine can
be started in a temporary way. ( P.356)
 Is the 12-volt battery discharged?
( P.357)
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The doors cannot be locked or
unlocked
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does
not start
The steering wheel cannot be
turned after the engine system> is stopped

419What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)419What to do if... (Troubleshooting)
 It is locked automatically to prevent
theft of the vehicle. ( P.141, 144)
 Is the window lock switch pressed?
The power window at the passenger’s seat
cannot be operated if the window lock
switch is pressed. ( P.126)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is
not running operating>) for a period of time.
( P.143, 146)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.339)
 The parking brake indicator is on
Is the parking brake released? ( P.162)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.334, 344)
 Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
 P.64)
To stop the alarm, turn the engine
switch to IGNITION
ON mode , or start the
engine .
 Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.344)
 When a warning light turns on or a
warning message is displayed, refer
to P.334, 344.
 Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.350)
 Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.370)
The windows do not open or
close by operating the power
window switches
The engine switch switch> is turned off automati-
cally
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
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

423What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index423
Ignition switch (engine switch) ............ 140
Ignition switch (power switch) ..............143
Overheating.....................................364, 366
Power switch ................................................. 143
Engine coolant.............................................. 295 Capacity ......................................................... 376
Checking ....................................................... 295
Preparing and checking before winter......................................................................... 233
Engine coolant temperature gauge ........74
Engine immobilizer system ........................ 62
Engine oil ........................................................ 293 Capacity ......................................................... 374
Checking ....................................................... 293
Preparing and checking before winter......................................................................... 233
Warning light ............................................... 334
Warning message..................................... 347
Engine oil maintenance data .................. 294
Engine oil temperature gauge ...................74
Engine switch (power switch) ....... 140, 143 Auto power off function ................ 143, 146
Changing the engine switch (power switch) modes..................................142, 146
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the engine (hybrid system) 140,
143
EPS (Electric Power Steering) ...............227 Function ...........................................................227
Warning light ...............................................335
EV drive mode................................................ 147
Event data recorder (EDR) ............................7
EV indicator ...................................................... 55
F
First-aid kit storage belt ............................ 256
Flat tire ............................................................. 350 Tire pressure warning system .............303
Floor mats ...........................................................22
Fluid Automatic transmission ...........................377 Brake ................................................................378
Hybrid transmission..................................378
Washer ........................................................... 297
Footwell light ................................................. 252
Front passenger occupant classification system .............................................................. 38
Front seats ......................................................... 114 Adjustment ....................................................... 114
Cleaning ......................................................... 277
Correct driving posture ............................ 23
Driving position memory .......................... 116
Head restraints............................................... 119
Jam protection function ............................. 115
Memory recall function.............................. 117
Seat heaters .................................................. 249
Seat position memory ................................ 116
Seat ventilators ............................................ 249
Front side marker light ................................ 167 Light switch .....................................................167
Replacing light bulbs ................................ 324
Front turn signal lights .................................. 161 Replacing light bulbs ................................ 324
Turn signal lever ............................................ 161
Fuel ...................................................................... 176 Capacity ......................................................... 373
Fuel gauge ........................................................ 74
Fuel pump shut off system.....................333
Information ..................................................... 381
Refueling...........................................................176
Type .................................................................. 373
Warning light .............................................. 338
Fuel consumption Average fuel consumpt ion after refueling
............................................................................. 79
Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door ................................................. 176 If the fuel filler do or cannot be opened
..........................................................................354
Refueling...........................................................176
Fuel gauge ..........................................................74
Fuel pump shut off system........................ 333

424Alphabetical index
LC500_LC500h_OM_OM11405U_(U)
Fuses ...................................................................319
G
Garage door opener ................................. 260
Gauges ................................................................74
Glove box ....................................................... 254
Glove box light ............................................. 254
Grocery bag hooks .................................... 256
H
Headlights ........................................................ 167 Automatic High Beam system..............170
Light switch ..................................................... 167
Replacing light bulbs................................ 324
Headlights aim .............................................. 323
Head restraints ................................................ 119
Head-up display.............................................. 84
Heated steering wheel .............................. 249
Heaters Air conditioning system.......................... 242
Heated steering wheel............................ 249
Outside rear view mirrors .................... 243
Seat heaters .................................................. 249
High-voltage components ..........................57
Hill-start assist control ................................227
Hood ................................................................. 289 Open ...............................................................289
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 256
Coat hooks ................................................... 259
Grocery bag hooks ................................. 256
Retaining hooks (floor mat)......................22
Horn ..................................................................... 121
Hybrid battery (traction battery) Location............................................................. 57
Specification ................................................. 374
Warning message........................................ 60
Hybrid battery (traction battery) air vents ............................................................................. 60
Hybrid system .................................................. 54 Emergency shut off system......................60
Energy monitor/consumption screen89
EV drive mode..............................................147
High voltage components ....................... 57
Hybrid System Indicator .......................... 88
Hybrid system precautions...................... 57
Hybrid vehicle driving tips ......................231
If the hybrid system will not start ........352
Overheating ................................................. 367
Power (ignition) switch .............................143
Regenerative braking .................................55
Starting the hybrid system .......................143
Vehicle proximity noti
fication system.56
Hybrid System Indicator.............................. 88
Hybrid transmission..................................... 155 M mode ........................................................... 160
Paddle shift switches ...................... 159, 160
Snow mode.................................................... 159
I
I/M test ............................................................ 286
IdentificationEngine.............................................................. 372
Vehicle ............................................................ 372
Ignition switch (engine switch)................ 140 Auto power off function............................143
Changing the engine switch modes ..142
If your vehicle has to be stopped in an emergency .................................................326
Starting the engine ..................................... 140
Ignition switch (power switch) .................143
Auto power off function........................... 146
Changing the power switch modes . 146
If your vehicle has to be stopped in an emergency .................................................326
Starting the hybrid system .......................143
Illuminated entry system ........................... 252
Immobilizer system........................................ 62
Indicators ........................................................... 70
Initialization Items to initialize ........................................ 403
Maintenance.....................................282, 294

429What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index429
Stop lights Replacing light bulbs................................ 324
Storage feature ............................................ 254
Stuck If the vehicle becomes stuck................ 370
Sunshade......................................................... 259
Sun visors ........................................................ 258
Switches “SOS” button ............................................... 266
Active rear wing switch .......................... 224
Automatic High Beam system..............170
Brake Hold switch ..................................... 165
BSM (Blind spot monitor) switch........ 216
Door lock switches ...................................... 101
Driving mode select switch ..................208
Driving position memory switches ...... 116
Dynamic radar cruise control with full-speed range switch .................................199
Emergency flashers switch ................... 326
Engine switch................................................ 140
EV drive mode switch .............................. 147
Garage door opener switches ..........260
Heated steering wheel switch............. 249
HUD (Head-up display) switch............ 84
Ignition switch..................................... 140, 143
Instrument panel light control switch... 77
Intuitive parking assist switch.................210
Light switches ................................................ 167
LKA (Lane-Keeping Assist) switch...193
Meter control switches .............................. 79
Outside rear view mirror switches ..... 123
Paddle shift switches . 153, 154, 159, 160
Parking brake switch ................................. 162
PCS OFF switch ......................................... 186
Power door lock switch ............................ 101
Power switch ................................................. 143
Power window switches ..........................125
Rear window and outside rear view mir- ror defoggers switch ............................ 242
Seat heater switches ................................ 249
Seat ventilator switches .......................... 249
Snow mode switch .......................... 153, 159 Tilt and telescopic steering control switch
............................................................................. 121
Tire pressure warning reset switch.. 306
Trunk opener main switch...................... 106
Trunk opener switch ................................. 104
Vehicle-to-vehicle distance switch.... 199
VSC OFF switch .......................................228
Window lock switch...................................126
Windshield wiper and washer switch172
Windshield wiper de-icer switch....... 246
T
Tachometer........................................................74 Variable red zone......................................... 76
Tail lights............................................................ 167 Light switch .....................................................167
Replacing light bulbs ................................ 324
Theft deterrent system Alarm................................................................... 64
Engine immobilizer system...................... 62
Theft prevention labels ...............................65
Tire inflation pressure ..................................313 Maintenance data ...................................... 379
Tire inflation pressure display function......................................................................... 303
Warning light .............................................. 340
Tire information ............................................ 383 Glossary ........................................................ 386
Size ................................................................... 384
Tire identification number..................... 384
Uniform Tire Quality Grading ........... 385
Tire pressure warning system ................ 303 Function ......................................................... 303
Initializing....................................................... 306
Installing tire pres sure warning valves
and transmitters...................................... 305
Registering ID codes ...............................307
Warning light .............................................. 340
Tires.................................................................... 301 Chains ............................................................. 234
Checking ........................................................ 301
If you have a flat tire ................................. 350