2019 LEXUS LX570 air conditioning

420 5-3. Using the air conditioning system and defogger
LX570_OM_OM60R07U_(U) 
Automatic operation
Operates automatically according to
the outside and cabin temperature
when “CLIMATE CONCIERGE”
switch is on. (  P. 404) Automatic
operation can be turned off using the
switch. The indicator light comes on when the
heated steering wheel is operating. 
Manual operation
Turns the heated steering wheel on/off The indicator light comes on when the heated steering wheel is operating. ■
The heated steering wheel can be used when
The engine switch is in IGNITION ON mode. ■
Timer function
Automatic operation: Operates for a maximum of 30 minutes.
(Turns off according to outside and cabin temperature.)
Manual operation: Turns off after approximately 30 minutes. ■
If the indicator light flashes
Press the switch to turn the heated steering wheel off and then press the switch again. If
the indicator light still flashes, a malfunction may be occurri ng. Turn the heated steering
wheel off and have the vehicle inspected by your Lexus dealer. ■
Customization
The automatic turning on/off of the heated steering wheel can be customized. (Custom-
izable features  P. 584)Heated steering wheel (if equipped)

422 5-3. Using the air conditioning system and defogger
LX570_OM_OM60R07U_(U) ■
Modes and indicators
The mode can be changed by pressing the switch.
* : When automatic mode is selected, the leve l automatically change s depending on the
air conditioning settings. ■
The seat heaters/seat vent ilators can be used when
The engine switch is in IGNITION ON mode. ■
Replacing the air filters
Filters are installed in the se at ventilators. For replacement of the filters, contact your
Lexus dealer. ■
Customization
The automatic mode settings for the seat heaters and ventilators can be changed.
(Customizable features:  P. 584)Mode “AUTO” indicator light Level indicator lights
Off Off Off
Automatic* On 3 to 1, or off
Hi Off 3
Mid Off 2
Lo Off 1

436
LX570_OM_OM60R07U_(U) 5-6. Using the other interior features
Other interior features While the engine is running, the cool box, which is cooled by the air conditioning,
can be used.
Press the button to open the lid.
Turns the cool box on/off When on, the indicator light comes on.
■
While the cool box is on
The front air conditioning sy stem cannot be turned off.■
When the outside temperature is 32  F (0  C) or below
The cool box may not operate.Cool box (if equipped) 1
2
WARNING
Keep the cool box closed while driving.
Injuries may result in the event of sudden braking, sudden swerving or an accident.
NOTICE
To prevent battery discharge, do not leave the cool box on longer than necessary when
the engine is not running.

459
LX570_OM_OM60R07U_(U) 6Maintenance and care 6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................460
Cleaning and protecting
the vehicle interior.................. 463
6-2. Maintenance
Maintenance
requirements ............................ 466
General maintenance..............468
Emission inspection and
maintenance (I/M)
programs ......................................471
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions................................ 472
Hood ............................................... 474
Engine compartment ............... 475
Tires ................................................ 488
Tire inflation pressure............... 497
Wheels ............................................ 501
Air conditioning filter ...............503
Electronic key battery ............. 505
Checking and replacing
fuses .............................................. 507
Light bulbs...................................... 510

LX570_OM_OM60R07U_(U) 4736-3. Do-it-yourself maintenance
6
Maintenance and care WARNING
The engine compartment contains many mechan isms and fluids that may move suddenly,
become hot, or become electrically energize d. To avoid death or serious injury, observe
the following precautions: ■
When working on the engine compartment ●
Keep hands, clothing and tools away from the moving fan and engine drive belt.●
Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driving
as they may be hot. Oil and other fluids may also be hot. ●
Do not leave anything that may burn easily, such as paper or rags, in the engine com-
partment. ●
Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel and
battery fumes are flammable. ●
Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid. ■
When working near the electric cooling fans or radiator grille
Be sure the engine switch is off. With the engine switch in IGNITION ON mode, the
electric cooling fans may auto matically start to run if the air conditioning is on and/or
the coolant temperature is high. (  P. 481) ■
When working on or under the vehicle
Do not get under the vehicle with just the jack supporting it.
Always use automotive jack stands or other solid supports. ■
Safety glasses
Wear safety glasses to prevent flying or falling material, flui d spray, etc. from getting in
your eyes.
NOTICE ■
If you remove the air cleaner filter
Driving with the air cleaner f ilter removed may cause excessive engine wear due to dirt
in the air.

503
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Air conditioning filter Turn the engine switch IGNITION ON mode and switch to recirculated air
mode, then turn the engine switch off.
Open the glove box and remove the separate tray. (  P. 427)
Remove the filter cover.
Remove the filter case.The air conditioning filter must be cl eaned or changed re gularly to maintain
air conditioning efficiency.
Removal method 1
2
3
4

504
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance
If the filter is dirty, clean by blowing
compressed air through the filter from
the downward side. Hold the air gun 2 in. (5 cm) from the fil-
ter and blow for approximately 2 min-
utes at 72 psi (500 kPa, 5.0 kgf/cm 2
or
bar).
If it is not availa ble, have the filter
cleaned by your Lexus dealer.
Remove the air conditioning filter and
replace it with a new one. The “  UP” marks shown on the filter
should be pointing up.
■
Checking interval
Inspect, clean and replace the air conditio ning filter accordin g to the maintenance
schedule. In dusty areas or area s with heavy traffic flow, more frequent cleaning or early
replacement may be required.
(For scheduled maintenance information, please refer to the “Owner’s Manual
Supplement” or “Scheduled Maintenance”.) ■
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.Cleaning method
Replacement method
NOTICE ■
To prevent damage to the system●
When using the air conditioning system, make sure that a filter is always installed.●
When cleaning the filter, do no t clean the filter with water.

555
LX570_OM_OM60R07U_(U) 7
When trouble arises 7-2. Steps to take in an emergency
If your vehicle overheats Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down suff iciently, inspect th e hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans If a large amount of coolant leaks,
immediately contact your Lexus
dealer.The following may indicate that your vehicle is overheating. ●
The needle of the engine coolant temperature gauge (  P. 92) enters the
red zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.) ●
Steam is coming from under the hood.
Correction procedures 1
2
3
1
2