2017 LEXUS LS600H heating

4145-3. Using the air conditioning system and defogger
LS600h/LS600hL_EE(OM50G20E)
■Operation of the air conditioning system in Eco drive mode
●In the Eco drive mode, the air conditioning system is controlled as follows to priori-
tize fuel efficiency
• Engine speed and compressor operation controlled to restrict heating/cooling
capacity
• Fan speed restricted when automatic mode is selected
●To improve air conditioning performance, perform the following operations
• Adjust the fan speed
• Turn off Eco drive mode
■Using the automatic mode
Fan speed is adjusted automatically in accordance with the temperature setting and
ambient conditions. As a result, the following may occur:
●Immediately after the “AUTO” switch is pressed, the fan may stop for a while until
warm or cool air is ready to flow.
●Cool air may flow to the area around the upper body when the heater is on.
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Selecting
“A/C” on will dehumidify the air from the outlets and defog the windshield effec-
tively.
●If you turn “A/C” off, the windows may fog up more easily.
●The windows may fog up if the recirculated air mode is used.
■Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set the outside/
recirculated air mode button to the recirculated air mode. This is effective in pre-
venting outside air from entering the vehicle interior. During cooling operation, set-
ting the recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

4595-6. Other interior features
5
Interior features
LS600h/LS600hL_EE(OM50G20E)
■Operating condition
The power switch is in ON mode.
■Climate control seat/seat heater operation
Depending on the outside temperature and the temperature of the seat surface,
there are cases when heating operation is stronger than usual.
■Operating the rear climate control seats from the front seats.
 P. 409
■Disabling the switches on the rear controller
 P. 411
■Replacing the air filters
Filters are installed in the climate control se ats. For replacement of the filters, contact
any authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
■Customization
Automatic operation settings can be customized. (Customizable features P. 634)

4605-6. Other interior features
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■Burns/excessive cooling
●Use caution when seating the following persons in a seat to avoid the possibility of
burns or excessive cooling:
• Babies, small children, elderly persons, sick persons and persons with a physi-
cal disability
• Persons who have sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs which induce sleep, such as sleeping
drugs and cold remedies
●Do not cover the seat with anything when using the climate control seat or seat
heater. Using the climate control seat or seat heater with a blanket or cushion
may increase or decrease the temperature of the seat, resulting in overheating or
overcooling.
●Do not use the climate control seat or seat heater more than necessary. Doing so
may cool the occupants excessively or may cause minor burns or overheating.
NOTICE
■To prevent damage to the climate control seat and seat heater
Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects, such as needles and nails, into the seat.
■To prevent the 12-volt battery from being discharged
Do not leave the system on longer than necessary when the hybrid system is off.

6117-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
●The needle of the engine coolant temperature gauge ( P. 115) enters
the red zone or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
●“Hybrid System Overheat” is shown on the multi-information display.
●Steam comes out from under the hood.
■If the needle of the engine cool ant temperature gauge enters the red
zone
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact any
authorized Lexus dealer or
repairer, or anot her duly quali-
fied and equipped professional.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

643
8
8-2. Customization
Vehicle specifications
LS600h/LS600hL_EE(OM50G20E)
Automatic
air condi-
tioning sys-
tem
( P. 399)
Switching between out-
side air and recirculated air
mode linked to “AUTO”
switch operation
OnOffO—O
A/C Auto switch opera-
tionOnOffO—O
Exhaust gas sensor sensi-
tivityStandard-3 to 3O—O
Air conditioning control of
Eco drive modeOnOff——O
Climate
control
seats*2/
seat heat-
ers*2
( P. 456)
Front climate control seat/
seat heater temperature
adjustment during auto-
matic operation (individual
seat adjustment available)
Level 3
(standard)
Level 1
(cool) to
level 5
(warm)
O—O
Rear climate control seat/
rear seat heater start-up
conditions when power
switch is in the ON posi-
tion (individual seat adjust-
ment available)
OffOn
(AUTO)O—O
Function that warms seats
faster than usual (individual
seat adjustment available)
OnOff——O
Time until function that
warms seats faster than
usual turns off (individual
seat adjustment available)
Standard
Short
——O
Long
Heated
steering
wheel*2
( P. 454)
Automatic steering wheel
heatingOnOffO—O
Time until automatic steer-
ing wheel heating turns off
Level 3
(standard)
Level 1
(short) to
level 5
(long)
O—O
ItemFunctionDefault
setting
Custom-
ized setting123

657Alphabetical index
LS600h/LS600hL_EE(OM50G20E)
Climate control seat ............................456
Climate control seat filter..................459
Clock ......................................................... 447
Clock light ............................................... 427
Coat hooks .............................................. 472
Coin holder ............................................. 434
Condenser ............................................ 500
Console box ........................................... 437
Coolant .....................................................498
Capacity ................................................. 627
Checking .............................................. 498
Preparing and checking
before winter ....................................384
Cooling system ......................................498
Engine overheating ............................. 611
Hybrid system overheating ............. 611
Cruise control
Cruise control .....................................289
Dynamic radar cruise control ..... 293
Dynamic radar cruise control
with full-speed range.................... 307
Cup holders ............................................435
Curtain shield airbags ...........................50
Customizable features ....................... 634
Daytime running light system ........... 271
Defogger
Outside rear view mirrors ............ 425
Rear window........................................ 425
Windshield ........................................... 407
Differential
Front differential ................................. 629
Rear differential .................................. 629
Dimensions ............................................. 620
Display
Dynamic radar cruise control ..... 293
Dynamic radar cruise control
with full-speed range ................... 307
LKA (Lane-Keeping Assist) ........ 328
Multi-information display................... 121
Remote Touch screen .................... 390
Trip information.................................... 123
Warning message ............................ 563
Do-it-yourself maintenance ............. 486
D

659Alphabetical index
LS600h/LS600hL_EE(OM50G20E)
Eco drive mode ..................................... 334
Electric motor (traction motor) .........85
Electric Power Steering (EPS)........339
Function ..................................................339
Warning light ....................................... 557
Electronic key.......................................... 140
If the electronic key does not
operate properly ........................... 603
Replacing the battery....................... 532
Electronically modulated air
suspension ............................................ 336
Emergency brake signal ....................339
Emergency flashers .............................546
Emergency, in case of
If a warning message is
displayed ............................................563
If the 12-volt battery is
discharged.........................................607
If the electronic key does not
operate properly ........................... 603
If the hybrid system will not
start ........................................................ 597
If the parking brake cannot
be released....................................... 599
If the warning buzzer sounds ..... 555
If the warning light turns on ......... 555
If you have a flat tire..............567, 578
If you think something
is wrong .............................................. 554
If your vehicle becomes stuck ...... 616
If your vehicle has to be
stopped in an emergency ......... 547
If your vehicle needs to
be towed ............................................ 548
If your vehicle overheats....................611
Emergency tire puncture
repair kit ................................................ 578
Energy monitor ........................................ 131
Engine
ACCESSORY mode ..................... 248
Compartment ..................................... 492
Engine switch ....................................... 247
Hood ....................................................... 489
How to start the hybrid
system................................................... 247
Identification number......................... 621
If the hybrid system will not
start ....................................................... 597
Ignition switch
(power switch) ................................. 247
Overheating ............................................611
Power switch ........................................ 247
E

662Alphabetical index
LS600h/LS600hL_EE(OM50G20E)
Height control
Electronically modulated air
suspension ......................................... 336
High-voltage components ...................89
Hill-start assist control ....................... 338
Hood ..........................................................489
Open....................................................... 489
Hooks
Cargo hooks........................................ 442
Coat hooks ........................................... 472
Retaining hooks (floor mat)............. 40
Shopping bag hooks ....................... 442
Horn ........................................................... 268
Hybrid battery (traction battery).......89
Hybrid battery (traction battery)
air vents.....................................................90
Hybrid system ........................................... 85
Emergency shut off system ............. 90
Energy monitor/
consumption screen ......................130
EV drive mode ....................................252
High voltage components............... 89
Hybrid System Indicator....................119
Hybrid system precautions ............. 89
Hybrid vehicle driving tips............ 382
If the hybrid system
will not start ....................................... 597
Overheating ............................................611
Power (ignition) switch ................... 247
Starting the hybrid system ............. 247
Hybrid System Indicator ...................... 119
Hybrid transmission ............................ 255
If the shift lever cannot be
shifted from P................................... 259
Paddle shift switches........................ 256
S mode ....................................................257