2018 LEXUS LS500 air conditioning

324 5-3. Using the air conditioning system and defogger
LS500_OM_OM50F54U_(U) When the function is on, the indicator illu-
minates on the control screen.
Sub function menu When the sub function button on the
Remote Touch is pressed, the following
functions can be switched on and off.
“Rear off”: Turn the rear seats fan off
“Rear AUTO”: Set the rear seats automatic
mode on/off ( → P.324)
: Disables operation of the rear air
conditioning system using the Rear Multi
Operation Panel ■
Rear Multi Operation Panel *
Various functions can be operated by
touching the displayed buttons on the
Rear Multi Operation Panel. *
: The Rear Multi Operation Panel cannot
be used to operate the rear air condi-
tioning system if the function is disabled.
( → P.323) 
Rear air conditioning control screen
Adjust the left side rear seat tem-
perature setting
Select the left side rear seat air flow
mode : Air flows to the upper body
: Air flows to the upper body and feet
: Air flows to the feet Set the rear seats automatic mode
on/off ( → P.324)
Select the right side rear seat air
flow mode
Turn the rear seats fan off
Adjust the right side rear seat tem-
perature setting
Adjust the rear seats fan speed set-
ting 
Shortcut screen
Adjust the left side rear seat tem-
perature setting
Adjust the right side rear seat tem-
perature setting 
Center Display
1 Select “Rear AUTO” on the sub
function menu. ( → P.323)
2 To stop the operation, select “Rear
off” on the sub function menu.
( → P.323)
If the fan speed setting or air flow
modes are operated, the automatic
mode indicator goes off. However,
automatic mode for functions other
than that operated is maintained.G
A
B Using automatic mode C
D
E
F
G
A
B

3255-3. Using the air conditio ning system and defogger
LS500_OM_OM50F54U_(U) 5
Interior features 
Rear Multi Operation Panel
1 Select “AUTO” on the rear air con-
ditioning control screen. ( → P.324)
2 To stop the operation, select “OFF”
on the rear air co nditioning control
screen. ( → P.323)
If the fan speed setting or air flow
modes are operated , the automatic
mode indicator goes off. However,
automatic mode for functions other
than that operated is maintained. ■
Using automatic mode
Fan speed is adjusted automatically accord-
ing to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until
warm or cool air is ready to flow immedi-
ately after “Rear AUTO” is selected or
“AUTO” is touched.
Cool air may blow around the upper body
even when the heater is on due to sunlight.
The temperature setting of the rear
seats can be adjusted using the follow-
ing methods:
 When the “4-ZONE” indicator is
off: Adjust the driv er’s seat tempera-
ture. Adjust the temperature setting of each
rear seat using the Center Display or Rear
Multi Operation Panel.
 Adjust the temperature setting of
each rear seat using the Center Dis-
play (rear air conditioning control
screen) or Rear Multi Operation
Panel. The temperature setting of each rear seat
can be changed independently.
■
Rear center outlets and rear side
outlets
1 Direct air flow to the left or right, up
or down
2 Turn the knob to open or close the
vent
Adjusting the temperature set-
ting of the rear seats Air outlet layout and operations
NOTICE■
To prevent battery discharge
Do not leave the air conditioning system
on longer than necessary when the
engine is off.

326 5-3. Using the air conditioning system and defogger
LS500_OM_OM50F54U_(U) *
:If equipped
Heated steering wheel *
/seat
heaters *
/seat ventilators *
 Heated steering wheel Warms up the grip of the steering wheel
 Front seat heaters/Rear seat
heaters Warm up the seat upholstery
 Front seat ventilators/Rear seat
ventilators Maintain good ventilation by pulling air
through the seat upholstery
The Center Display and Rear Multi
Operation Panel/rear control
panel can be used to operate the
heated steering wheel, seat heaters
and seat ventilators as follows:  Center Display Press the “MENU” button on the
Remote Touch to display the main menu
and move the cursor to to display
the shortcut button s. Then, select
to display the heated steering
wheel/front seat heater/front seat venti-
lator control screen.
To display the rear seat heater/rear seat
ventilator control sc reen, select . (if
equipped)
 Rear Multi Operation Panel Touch “Climate” on the home screen to
display the air conditioning control
screen.( →
P.308 )
Touching the shortc ut button on the
home screen will di splay operation but-
tons for the rear seat heaters and rear
seat ventilators.
 Rear control panel The rear seat heaters can be operated.
WARNING■
To prevent minor burn injuries
Care should be taken if anyone in the fol-
lowing categories comes in contact with
the steering wheel or seats when the
heater is on:
●
Babies, small children, the elderly, the
sick and the physically challenged
●
Persons with sensitive skin
●
Persons who are fatigued
●
Persons who have taken alcohol or
drugs that induce sleep (sleeping
drugs, cold remedies, etc.)

3275-3. Using the air conditio ning system and defogger
LS500_OM_OM50F54U_(U) 5
Interior features ■
Center Display 
Main screen
Using the touchpad of the Remote
Touch, select the button on the screen.
to can be adjusted by perform-
ing the following operations.
Flick operation: Move the pointer to
the desired item and flick the touchpad
up or down. The item can be adjusted by one level.
Trace operation: After selecting the
desired item, trace the touchpad sur-
face. The item can be adjusted by the amount
that you trace.
Trace operation cannot be used while driv-
ing. Adjust the seat ventilator fan speed
level The seat ventilator can be adjusted in 3 lev-
els. (Low, Mid or Hi)
Adjust the seat heater temperature
level The seat heater can be adjusted in 3 levels.
(Low, Mid or Hi)
Adjust the heated steering wheel
temperature level *
The heated steering wheel can be adjusted
in 2 levels. (Low or Hi)
Automatic mode on/off indicators When the automatic mode is on, the indi-
cator illuminates on the screen.
Sub function menu When the sub function button on the
Remote Touch is pressed, the following
functions can be set to automatic mode.
: Left-hand side seat heater/seat
ventilator
: Heated steering wheel *
: Right-hand side seat heater/seat
ventilator *
: Available on the front seat control
screen only 
Side screen
Display the air conditioning control
screen → P.319NOTICE■
To prevent damage to the seat heat-
ers and seat ventilators
Do not put heavy objects that have an
uneven surface on the seat and do not
stick sharp objects (needles, nails, etc.)
into the seat. ■
To prevent battery discharge
Do not use the functions when the
engine is off.
Control screen A C A
B
C
D
E
A

328 5-3. Using the air conditioning system and defogger
LS500_OM_OM50F54U_(U) Adjust the front seat heater tem-
perature levelEach time the switch is selected, the tem-
perature level and leve l indicator (orange)
change as follows:
AUTO → Hi → Mid → Lo → OFF
Adjust the front seat ventilator fan
speed levelEach time the switch is selected, the fan
speed level and leve l indicator (blue)
change as follows:
AUTO → Hi → Mid → Lo → OFF
Adjust the heated steering wheel
temperature levelEach time the switch is selected, the tem-
perature level and le vel indicator change
as follows:
AUTO → Hi → Lo → OFF■
Rear Multi Operation Panel (if
equipped) 
Rear air conditioning control screen
Adjust the rear seat heater tem-
perature levelEach time the switch is selected, the tem-
perature level and leve l indicator (orange)
change as follows:
AUTO → Hi → Mid → Lo → OFF
Adjust the rear seat ventilator fan
speed levelEach time the switch is selected, the fan speed level and level indicator (blue)
change as follows:
AUTO → Hi → Mid → Lo → OFF
Shortcut screen
Adjust the rear seat heater tem-
perature level Each time the switch is selected, the tem-
perature level and level indicator (orange)
change as follows:
AUTO → Hi → Mid → Lo → OFF
Adjust the rear seat ventilator fan
speed level Each time the switch is selected, the fan
speed level and level indicator (blue)
change as follows:
AUTO → Hi → Mid → Lo → OFF■
Rear control panel (if equipped)
Increases the rear seat heater tem-
perature level The seat ventilator can be adjusted in 3 lev-
els. (Low, Mid or Hi)B
C
D
A
B A
B
A

3295-3. Using the air conditio ning system and defogger
LS500_OM_OM50F54U_(U) 5
Interior features Enables/Disables the automatic
mode of the rear seat heaters
Decreases the rear seat heater
temperature levelIf this switch is select ed when the rear seat
heater temperature level is set to Lo, the
rear seat heater will turn off. ■
The heated steering wheel, seat heaters
and seat ventilators wheel can be used
when
The engine switch is in IGNITION ON
mode. ■
Air conditioning system-linked control
mode
When the seat ventilato r fan speed level is
Hi, the seat ventilator fan speed becomes
higher according to the fan speed of the air
conditioning system. ■
Customization
Some functions can be customized.
( → P.468)
WARNING■
To prevent overheating and minor
burn injuries
Observe the following precautions when
using the seat heaters. ●
Do not cover the seat with a blanket or
cushion when using the seat heater.
●
Do not use seat heater more than nec-
essary. B
C

361
LS500_OM_OM50F54U_(U) 6 6
Maintenance and care Maintenance and care .
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior ................................ 362
Cleaning and protecting the vehi-
cle interior ................................. 365
6-2. Maintenance
Maintenance requirements
........................................................ 368
General maintenance ............. 369
Emission inspection and mainte-
nance (I/M) programs ......... 372
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................ 373
Hood............................................... 375
Positioning a floor jack............ 375
Engine compartment............... 377
Battery ........................................... 384
Tires ................................................ 386
Replacing the tire ...................... 396
Tire inflation pressure .............. 399
Wheels............................................ 401
Air conditioning filter............... 402
Electronic key battery ............. 403
Checking and replacing fuses
........................................................ 405
Light bulbs .................................... 408

402 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 1 Turn the engine switch off.
2 Open the glove box. Remove the
partition. ( → P.336)
3 Remove the panel.
4 Unlock the filter cover ( ), pull the
filter cover out of the claws ( ),
and remove the filter cover. 5 Remove the filter case.
6 Remove the air conditioning filter
from the filter case and replace it
with a new one. The “ UP” marks shown on the filter
and the filter case sh ould be pointing up.
■
Checking interval
Inspect and replace the air conditioning fil-
ter according to the maintenance schedule.
In dusty areas or areas with heavy traffic
flow, early replacement may be required.
(For scheduled maintenance information,
please refer to the “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.)
■
If air flow from the vents decreases dra-
matically
The filter may be clogged. Check the filter
and replace if necessary.
■
Air conditioning filt er with deodorizing
function
When fragrances are placed in your vehi-
cle, the deodorizing effect may become
significantly weakened in a short period.
When an air conditioning odor comes out
continuously, replace the air conditioning Air conditioning filter The air conditioning filter must be
changed regularly to maintain air
conditioning efficiency.
Removing the air conditioning
filter
A
B