ignition lexus LC500 2018 Workshop Manual

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6-3. Do-it-yourself maintenance
Maintenance and care
pressure warning light does not blink 3 times. (Initialization will not occur while driving)
●After performing init ialization, the tire pressure warning light blinks for 1 minute
then stays on after driving for about 20 minutes.
If the inflation pressure of each tire is still not
displayed, have the vehicle inspected by
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
■When registering ID codes
●Initialize the tire pressure warning system after ID code registra tion. Initialization is
disabled if the system was initialized before registration.
●After ID code registration, the tires are hot by driving. Initia lize the tire pressure warning system after the tires become
cold.
The tire pressure warning valve and
transmitter is equipped with a unique
ID code. When replacing a tire pres-
sure warning valve and transmitter, it is
necessary to register the ID code.
When registering the ID codes, per-
form the following procedure.
1 Turn the engine switch switch> to IGNITION ON mode
.
2 Press or of the meter con-
trol switches and select .
3 Press or of the meter con-
trol switches and select “Vehicle
Settings”, and then press “OK”.
4 Press or of the meter con-
trol switches and select “TPWS
SET”, and then press “OK”.
5 Press or of the meter con-
trol switches and select “Change
wheel set”, and then press and hold
“OK” until the tire pressure warning
light starts blinking.
The change wheel set mode is activated and registration is started.
A message is displayed on the multi-infor- mation display, and “--” is displayed for inflation pressure of e ach tire. Then, the tire
pressure warning light blinks rapidly for approximately 1 minute and stays on.
6 Drive the vehicle at 40 km/h
(25mph) or more for approxi-
mately 10 to 30 minutes.
When registration is completed, the tire pressure warning light will go off and the inflation pressure of each tire will be dis-
played on the multi-information display.
WARNING
■When initializing the tire pressure
warning system
Do not initialize tire inflation pressure
without first adjusting the tire inflation pressure to the specified level. Other-wise, the tire pressure warning light may
not come on even if the tire inflation pres- sure is low, or it may come on when the tire inflation pressure is actually normal.
Registering ID codes

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7-2. Steps to take in an emergency
When trouble arises
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 towing eyelet.
( P.339)
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 wheel nut wrench
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 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.
■Wheel nut wrench
Wheel nut wrench is installed in trunk. ( P.339)
Emergency towing procedure

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7-2. Steps to take in an emergency
When trouble arises
■High coolant temperature warning light (warning buzzer)*
*: This light illuminates on the multi-information display.
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a front passenger seat, the front passenger detection sensor may cause the warning light to flash and the warning buzzer to sound even if a passenger is not
sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warning
light may not operate properly.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp w ill come on if the fuel tank becomes completely empty. If
the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.
■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 system warning lig ht may come on and the warning buzzer may sound.
■Tire pressure warning light
When a malfunction occurs in the tire pressure 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, maki ng it difficult to determine whether the warning light is blinking, turn the engine switch fr om off to IGNITION ON mode and check if the warning light blinks.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire inflation
pressure is at the specified level and carry out initialization. ( P.335)
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on du e to natural causes such as natural air leaks
and tire inflation pressure changes caused by temperature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
Warning
lightWarning light/Details/Actions
Indicates that the engine coolant temperature increases
 Stop and check. (P.400, 403)

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7-2. Steps to take in an emergency
■Conditions that the tire pressure warning system may not function properly
 P.330
■If the tire pressure warning light frequently 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 any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliabl e repairer. The vehicle will become extremely unstable during braking, 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 yellow, the assist to the power steering is restricted. When the
light comes on red, the assist to the power st eering 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.
●Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 80 km/h (50 mph).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on ev en after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the flat tire replaced by nearest authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

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7-2. Steps to take in an emergency
order to perform the following opera-
tions:
■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 both side doors
Opens the windows (turn and
hold)*
*: These settings must be customized at
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
■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 entry & start system is deactivated in customization setting, the engine switch will turn to
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>

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7-2. Steps to take in an emergency
When trouble arises
LC500h (Right-hand drive vehicles)
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any moving parts as shown in the illustration
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 any autho-rized Lexus retailer or Lexus authorized
repairer, or any reliable repairer 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-
A
B
C
D

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8-1. Specifications
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact any auth orized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
■Spark plug
■12-volt battery
Cooling system
Capacity*
LC50012.1 L (12.8 qt., 10.6 Imp.qt.)
LC500h
Gasoline engine
10.9 L (11.5 qt., 9.6 Imp.qt.)
Power control unit
2.3 L (2.4 qt., 2.0 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, 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
Gap0.8 mm (0.031 in.)0.8 mm (0.031 in.)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Specific gravity reading at 20°C
(68°F):1.250 or higher

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8-2. Customization
Vehicle specifications
■Vehicle customization
●When the speed-detecting automatic door lock and shift-linked automatic door
lock are both on, the door lock operates as follows.• When shifting the shift position to any
position other than P, both side the doors will be locked.• If the vehicle is started with both side
doors locked, the speed-detecting auto- matic door lock will not operate.
• If the vehicle is started with any door unlocked, the speed-detecting auto-matic door lock will operate.
●When the smart entry & start system 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 operational signal (Emergency 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 .
Chassis control in custom modeNormalSportO——Comfort
Air conditioning operation in cus-
tom modeNormalEcoO——
FunctionDefault settingCustomized settingABC

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What to do if... (Troubleshooting)
1-1.What to do if ... (Tro ubleshooting )What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.
( P.388)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer
immediately. ( P.388)
 Is the electronic key battery weak or
depleted? ( P.349)
 Is the engine switch
in IGNITION ON mode mode>?
When locking the doors, turn the engine
switch off. ( P.165, 170)
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.124)
 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.120)
 Did you press the engine switch
while firmly
depressing the brake pedal?
( P.163, 167)
 Is the shift position in P? (P.173,
179)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.123)
 Is the steering wheel unlocked?
( P.164, 168)
 Is the electronic key battery weak or
If you have a problem, check the
following before contacting any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
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

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What to do if... (Troubleshooting)
depleted?
In this case, the engine can
be started in a temporary way. ( P.390)
Is the 12-volt battery discharged?
( P.392)
 It is locked automatically to prevent
theft of the vehicle. ( P.164, 168)
 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.152)
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.166, 170)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.373)
The parking brake indicator is on
Is the parking brake released? (P.187)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.368, 378)
 Did anyone inside the vehicle open
a door or anything move inside the
vehicle during setting the alarm?
The sensor detects them and the alarm
sounds. ( P.76)
To stop the alarm, turn the engine
switch to IGNITION
ON mode or start the
engine .
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.378)
When a warning light turns on or a
warning message is displayed, refer
to P.368, 378.
The steering wheel cannot be
turned after the engine system> is stopped
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