air conditioning lexus LC500h 2020 / LEXUS 2020 LC500,LC500H (OM11537U) Owner's Guide

3537-2. Steps to take in an emergency
7
When trouble arises
NOTICE
■If “High Power Consumption Partial Limit On AC/Heater Operation” is shown fre-
quently
Air conditioning, heater and other operations are temporarily limited due to high power
consumption. Turn off unnecessary electronic equipment to reduce power consumption,
and wait until the power supply returns to norm al. If this message is frequently displayed,
have the vehicle inspected at your Lexus dealer.
■If “Aux Battery Low See Owner’s Manual” is shown frequently (LC500h)
The 12-volt battery may deteriorate. As it may cause the 12-volt battery discharge, have
the 12-volt battery inspected by your Lexus dealer.

3687-2. Steps to take in an emergency
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4
The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
(LC500)
The following may indicate that
your vehicle is overheating.
The engine coolant temperature
gauge ( P.80) is in the red zone
or a loss of engine power is expe-
rienced. (For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High” is
shown on the multi-information
display.
 Steam comes out from under the
hood.
Correction procedures
A
B
A
B
C
D

3697-2. Steps to take in an emergency
7
When trouble arises
coolant is unavailable.
6Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
■When adding coolant
Add coolant in accordance with the follow-
ing procedure.
1 Remove the service cover.
2 Remove the engine cover. 3
Remove the caps and .
4 Add coolant through the inlet of the cap
up to the “F” line , and then
replace the cap .
5 Add coolant through the inlet of the cap
until it is full, and then replace the
cap .WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
AB
AC
A
B
B

3707-2. Steps to take in an emergency
If the engine coolant temperature
gauge enters the red zone or
“Engine Coolant Temp High Stop in
a Safe Place See Owner’s Manual”
is shown on the multi-information
display
1 Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the hybrid system.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
WARNING
●Keep hands and clothing (especially a
tie, a scarf or a muffler) away from the
fan and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.
●While the engine and radiator are hot,
do not loosen or remove the coolant
inlet cap or coolant reservoir cap.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.
If your vehicle overheats
(LC500h)
The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge ( P.80) is in the red zone
or a loss of hybrid system power is
experienced. (For example, the
vehicle speed does not increase.)
 “Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” or “Hybrid System
Overheated Reduced Output
Power” is shown on the multi-
information display.
 Steam comes out from under the
hood.
Correction procedures

3717-2. Steps to take in an emergency
7
When trouble arises
3After the hybrid system has cooled
down sufficiently, inspect the hoses
and cooling system for leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if engine coolant is unavailable.
6
Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not oper ate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the hybrid system immediately
and contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
If “Hybrid System Overheated
Reduced Output Power” is shown
on the multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood.
A
B
A
B
C
D

3918-1. Specifications
8
Vehicle specifications
Accessory weight
The combined weight (in excess of those standard items which may
be replaced) of automatic transmission , power
steering, power brakes, power wi ndows, power seats, radio and
heater, to the extent that these item s are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equipment, including the
maximum capacity of fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional engine
Maximum loaded
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants specified in the sec-
ond column of Table 1
* that follows
Occupant distribu-
tionDistribution of occupants in a vehicl e as specified in the third column
of Table 1
* below
Production options
weight
The combined weight of installed regular production options weigh-
ing over 5 lb. (2.3 kg) in excess of the standard items which they
replace, not previously considered in curb weight or accessory
weight, including heavy duty brakes , ride levelers, roof rack, heavy
duty 12-volt battery, and special trim
RimA metal support for a tire or a tire and tube assembly upon which the
tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designa-
tionThe industry manufacturer’s designation for a rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity)The rated cargo and luggage load plus 150 lb. (68 kg) times the
vehicle’s designated seating capacity
Tire related termMeaning

4038-2. Customization
8
Vehicle specifications
■Automatic air conditioning system (P.252)
■Seat heater*/seat ventilators* ( P.259)
*:If equipped
■Heated steering wheel* ( P.259)
*:If equipped
■Illumination ( P.262)
FunctionDefault settingCustomized setting
A/C auto switch operationOnOffOO
Exhaust gas sensor sensitivityStandard-3 to 3OO
FunctionDefault settingCustomized setting
Driver’s seat temperature prefer-
ence in automatic modeStandard-2 (cooler) to 2
(warmer)OO
Passenger’s seat temperature pref-
erence in automatic modeStandard-2 (cooler) to 2 (warmer)OO
FunctionDefault settingCustomized setting
Steering wheel heating preference
in automatic modeStandard-2 (low) to 2 (high)OO
FunctionDefault settingCustomized setting
Time elapsed before the interior
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
Operation when you approach the
vehicle with the electronic key on
your person
OnOffO
Footwell lightingOnOffO
Door trim ornament lightsOnOffO
ABC
ABC
ABC
ABC

4058-2. Customization
8
Vehicle specifications
■Outside door handle (P.111)
*: After the engine switch is turned off
■Intuitive parking assist* ( P.217)
*:If equipped
■Driving mode select switch ( P.216)
■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-
FunctionDefault settingCustomized setting
Vehicle speed at which the speed
linked outside door handle retract-
ing function operates6 mph (10
km/h)
3 mph (5 km/h)
O9 mph (15 km/h)
12 mph (20 km/h)
Time elapsed before the outside
door handle are automatically
retracted
60 seconds20 minutes*O
FunctionDefault settingCustomized setting
Intuitive parking assistOnOffO
Detection distance of the front
center sensorFarNearOO
Detection distance of the rear cen-
ter sensorFarNearOO
Buzzer volumeLevel 2Level 1OOLevel 3
FunctionDefault settingCustomized setting
Powertrain control in custom modeNormalPowerOEco
Chassis control in custom modeNormalSportOComfort
Air conditioning operation in cus-
tom modeNormalEcoO
ABC
ABC
ABC

424Alphabetical index
Alphabetical index
A
A/C ................................................................... 252Air conditioning filter ............................... 320
Automatic air conditioning system ... 252
Micro dust and pollen filter................... 257
ABS (Anti-lock Brake System).............. 235 Function .......................................................... 235
Warning light ...............................................340
Active rear wing........................................... 232
Adaptive Variable Suspension System235
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi- tions .................................................................. 30
Curtain shield airbag precautions ....... 33
Front passenger occupant classification system ............................................................. 38
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ......... 30
Side airbag precautions ............................ 33
Side and curtain shield airbags operating conditions...................................................... 30
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ......................................340
Air conditioning filter ................................. 320
Air conditioning system ............................ 252 Air conditioning filter ............................... 320
Automatic air conditioning system ... 252
Micro dust and pollen filter................... 257
Alarm ................................................................... 70 Alarm .................................................................. 70
Warning buzzer ......................................... 339
Anchor brackets ..................................... 44, 52
Antennas (smart access system with push- button start) ................................................... 115 Anti-lock Brake System (ABS).............. 235
Function ..........................................................235
Warning light .............................................. 340
Approach warning........................................ 212
Automatic headlight leveling system .... 176
Automatic High Beam ................................178
Automatic light control system................ 175
Automatic transmission .............................. 157 M mode ............................................................162
Paddle shift switches ......................... 161, 162
Snow mode...................................................... 161
Auxiliary net................................................... 264
Average fuel economy................................. 86
Average vehicle speed ................................ 86
B
Back-up lights Replacing light bulbs ................................328
Battery (12-volt battery) ........................... 303 Battery checking ....................................... 303
If the 12-volt battery is discharged ..... 361
Preparing and checking before winter.......................................................................... 242
Replacing ...................................................... 365
Warning light ...............................................339
Battery (traction batter y) ............................ 63
Blind Spot Monitor (BSM)....................... 223 Blind Spot Monitor function ................. 227
Rear Cross Traffic Alert function ....... 229
Brake Brake hold .......................................................173
Fluid...................................................................382
Parking brake ............................................... 170
Regenerative braking ...................................61
Warning light .................................. 339, 343
Warning message .....................................349
Brake assist .................................................... 235
Break-in tips.....................................................139
Brightness control Instrument panel light control.................83
BSM (Blind Spot Monitor)....................... 223 Blind Spot Monitor function ................. 227

428Alphabetical index
Refueling ......................................................... 184
Fuel gauge ......................................................... 80
Fuel pump shut off system........................ 338
Fuses ................................................................. 323
G
Garage door opener ................................. 270
Gauges ............................................................... 80
Glove box ....................................................... 264
Glove box light ............................................. 264
Grocery bag hooks .................................... 266
H
Headlights ........................................................ 175 Automatic High Beam system..............178
Light switch ..................................................... 175
Replacing light bulbs................................ 328
Headlights aim .............................................. 327
Head restraints ............................................... 127
Head-up display................................................ 91
Heated steering wheel .. ............................ 259
Heaters Air conditioning system.......................... 252
Heated steering wheel............................ 259
Outside rear view mirrors .................... 253
Seat heaters .................................................. 259
High-voltage components ......................... 63
Hill-start assist control ............................... 235
Hood ................................................................. 294 Open ............................................................... 294
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 266
Coat hooks ................................................... 269
Grocery bag hooks ................................. 266
Retaining hooks (floor mat)......................22
Horn ....................................................................129
Hybrid battery (traction battery) Location............................................................. 63
Specification ................................................. 378
Warning message........................................ 66 Hybrid battery (traction battery) air vents
............................................................................. 66
Hybrid system .................................................. 60 Emergency shut off system...................... 66
Energy monitor/consumption screen96
EV drive mode............................................. 155
High voltage components ....................... 63
Hybrid System Indicator ...........................95
Hybrid system precautions...................... 63
Hybrid vehicle driving tips ....................240
If the hybrid system will not start ....... 356
Overheating ...................................................371
Power (ignition) switch .............................. 151
Regenerative braking ...................................61
Starting the hybrid system ........................ 151
Vehicle proximity noti fication system. 62
Hybrid System Indicator.............................. 95
Hybrid transmission......................................163 M mode ........................................................... 168
Paddle shift switches .......................167, 168
Snow mode.....................................................167
I
I/M test ..............................................................291
IdentificationEngine.............................................................. 376
Vehicle ............................................................ 376
Ignition switch (engine switch)................ 148 Auto power off function............................. 151
Changing the engine switch modes . 150
If your vehicle has to be stopped in an emergency ................................................ 330
Starting the engine ..................................... 148
Ignition switch (power switch) .................. 151
Auto power off function........................... 154
Changing the power switch modes . 154
If your vehicle has to be stopped in an emergency ................................................ 330
Starting the hybrid system ........................ 151
Illuminated entry system ........................... 262
Immobilizer system........................................ 68
Indicators ............................................................76