2019 LEXUS RC350 air condition

2105-2. Using the air conditioning system
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810your Lexus dealer.
*: The doors that can recall the driving
position memory are changed at the
same time.
■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 is pressed or “AUTO” is
selected.
■Using the voice command system
Air conditioning system can be operated
using voice commands. Fo r details, refer to
the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Fogging up of the windows
The windows will easily fog up when the
humidity in the vehicle is high. Turning (“A/C”) on will dehumidify the air
from the outlets and defog the windshield
effectively.
●If you turn (“A/C”) off, the win-
dows may fog up more easily.
●The windows may fog up if the recircu-
lated air mode is used.
■Outside/recirculated air mode
●When driving on dusty roads such as tun-
nels or in heavy traffic, set the out-
side/recirculated air mode button to the
recirculated air mode. This is effective in
preventing outside air from entering the
vehicle interior. During cooling opera-
tion, setting the recirculated air mode will
also cool the vehicle interior effectively.
●Outside/recirculated air mode may auto-
matically switch de pending on the tem-
perature setting or the inside
temperature.
■When the outside temperature exceeds
75°F (24°C) and the air conditioning
system is on
●In order to reduce the air conditioning
power consumption, the air conditioning system may switch to recirculated air
mode automatically. This may also
reduce fuel consumption.
●Recirculated air mode is selected as a
default mode when the engine switch is
turned to IGNITION ON mode.
●It is possible to switch to outside air mode
at any time by pressing
.
■Automatic mode for air intake control
In automatic mode, the system detects
exhaust gas and other pollutants and auto-
matically switches between outside air and
recirculated air modes.
When the dehumidification function is off,
and the fan is operating, turning automatic
mode on will activate the dehumidification
function.
■Operation of the air conditioning sys-
tem in Eco drive mode
In Eco drive mode, the air conditioning sys-
tem is controlled as follows to prioritize fuel
efficiency:
●Engine speed and compressor operation
controlled to restrict heating/cooling
capacity
●Fan speed restricted when automatic
mode is selected
To improve air condit ioning performance,
perform the following operations:
●Adjust the fan speed
●Turn off Eco drive mode
■When the outside temperature falls to
nearly 32°F (0°C)
The dehumidification function may not
operate even when is pressed or
“A/C” is selected.
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning
system to the outside air mode.
●During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning sys-
tem. This may then cause odor to be
emitted from the vents.

2115-2. Using the air conditioning system
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Interior features
●To reduce potential odors from occur-
ring:
• It is recommended that the air condition-
ing system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be
delayed for a short period of time imme-
diately after the air conditioning system is
started in automatic mode.
■Air conditioning filter
 P.264
■Customization
Some functions can be customized.
(  P.339)
■Location of air outlets
The air outlets and air volume changes
according to the selected airflow
mode.
■Adjusting the position of and open-
ing and closing the air outlets
Front Direct air flow to the left or right, up
or down
Turn the knob to open or close the
vent
Rear
Direct air flow to the left or right, up
or down
To close the vent, move the knob to the
most outside position.
Air outlets
WARNING
■To prevent the windshield from fog-
ging up
●Do not use during cool air
operation in extremely humid weather.
The difference between the tempera-
ture of the outside air and that of the
windshield can cause the outer surface
of the windshield to fog up, blocking
your vision.
●Do not place anything on the instru-
ment panel which may cover the air
outlets. Otherwise, air flow may be
obstructed, preventing the windshield
defoggers from defogging.
A
B
A

2125-2. Using the air conditioning system
RC350AWD_RC350_RC300AWD_RC30
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*: If equipped
Turn the heated steering wheel on/off
The indicator light comes on when the
WARNING
■To prevent burns
●Do not touch the rear view mirror sur-
faces when the outside rear view mir-
ror defoggers are on.
●Do not touch the glass at lower part of
the windshield or to the side of the
front pillars when the windshield wiper
de-icer is on.NOTICE
■To prevent battery discharge
Do not leave the air conditioning system
on longer than necessary when the
engine is stopped.
Heated steering wheel*/seat
h
eaters*/seat ventilators*
Heated steering wheel and seat
heaters heat the side grips of the
steering wheel and seats, respec-
tively. Seat ventilators maintain
good ventilation using a fan built
into the seat.
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.)
NOTICE
■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 (n eedles, nails, etc.)
into the seat.
■To prevent battery discharge
Do not use the functions when the
engine is off.
Heated steering wheel
A

2135-2. Using the air conditioning system
RC350AWD_RC350_RC300AWD_RC30
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5
Interior features
heated steering wheel is operating.
■Operation condition
The engine switch is in IGNITION ON
mode.
■Timer function
The heated steering wheel will automati-
cally turn off after about 30 minutes.
Vehicles without seat ventilators
Each time the switch is pressed, the
intensity of the seat heater changes
and the level indicator lights (amber) light as follows:
Hi (3 segments lit) Mid (2 segments
lit)  Lo (1 segment lit) Off
Vehicles with seat ventilators
Each time the switch is pressed, the
intensity of the seat heater changes
and the level indicator lights (amber) light as follows:
Hi (3 segments lit) Mid (2 segments
lit)  Lo (1 segment lit) Off
■Operation condition
The engine switch is in IGNITION ON
mode.
■Seat heater timer control
To enable seat heater timer control, press
and hold the driver and front passenger
seat heater switches at the same time when
the vehicle is stopped until a buzzer sounds
once. If a seat heater is turned on while seat
heater timer control is enabled, the intensity
of the seat heater w ill automatically change
from Hi Mid Lo.
The timing of the chan ge in seat heater
intensity differs depending on the tempera-
ture inside the cabin, etc. when the seat
heater is operating.
To disable seat heater timer control, press
and hold the driver and front passenger
seat heater switches at the same time until a
buzzer sounds twice.
Seat heaters
A
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.
A

2145-2. Using the air conditioning system
RC350AWD_RC350_RC300AWD_RC30
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Each time the switch is pressed, the
intensity of the seat ventilator changes
and the level indicator lights (green) light as follows:
Hi (3 segments lit) Mid (2 segments
lit)  Lo (1 segment lit) Off
■Operation condition
The engine switch is in IGNITION ON
mode.
■Air conditioning system-linked control
mode
When a seat ventilator is set to Hi, the fan
speed of the seat ventilator may increase
according to the fan speed of the air condi-
tioning system.
Seat ventilators
A

231
RC350AWD_RC350_RC300AWD_RC30
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6
6
Maintenance and care
Maintenance and care
.6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 232
Cleaning and protecting the vehi- cle interior ................................. 235
6-2. Maintenance Maintenance requirements........................................................ 238
General maintenance ............. 239
Emission inspection and mainte- nance (I/M) programs ......... 242
6-3. Do-it-yourself maintenance Do-it-yourself service precautions243
Hood............................................... 245
Positioning a floor jack............ 245
Engine compartment............... 247
Tires ................................................ 255
Tire inflation pressure ............... 261
Wheels........................................... 263
Air conditioning filter...............264
Electronic key battery ............. 265
Checking and replacing fuses ........................................................ 267
Headlight aim.............................. 269
Light bulbs .................................... 270

2356-1. Maintenance and care
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Maintenance and care
 Remove dirt and dust using a vac-
uum cleaner. Wipe dirty surfaces
with a cloth dampened with luke-
warm water.
 If dirt cannot be removed, wipe it off
with a soft cloth dampened with
neutral detergent diluted to approx-
imately 1%.
Wring out any excess water from the cloth
and thoroughly wipe off remaining traces
of detergent and water.
■Shampooing the carpets
There are several commercial foaming-type
cleaners available. Use a sponge or brush
to apply the foam. Rub in overlapping cir-
cles. Do not use water. Wipe dirty surfaces
and let them dry. Excellent results are
obtained by keeping the carpet as dry as
possible.
■Handling the seat belts
Clean with mild soap and lukewarm water
using a cloth or sponge. Also check the
belts periodically for excessive wear, fraying
or cuts.
■When cleaning the carpeted portions of
the glove box, console box, etc.
If a strong adhesive ta pe is used, there is a
possibility that the surface of the carpet
could be damaged.
NOTICE
●Do not spray the lower part of the
windshield continuously.
If water enters the air conditioning sys-
tem intake located near the lower part of
the windshield, the air conditioning sys-
tem may not operate correctly.
Cleaning and protecting the
v
ehicle interior
Perform cleaning in a manner
appropriate to each component
and its material.
Protecting the vehicle interior

2566-3. Do-it-yourself maintenance
RC350AWD_RC350_RC300AWD_RC30
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■When to replace your vehicle’s tires
Tires should be replaced if:
●The treadwear indicators are showing on
a tire.
●You have tire damage such as cuts, splits,
cracks deep enough to expose the fabric,
and bulges indicating internal damage
●A tire goes flat repeatedly or cannot be
properly repaired due to the size or loca-
tion of a cut or other damage
If you are not sure, consult your Lexus
dealer.
■Tire life
Any tire over 6 years old must be checked
by a qualified technician even if it has sel-
dom or never been used or damage is not
obvious.
■Low profile tires
Generally, low profile tires will wear more
rapidly and tire grip performance will be
reduced on snowy and/or icy roads when
compared to standard ti res. Be sure to use
snow tires or tire chains on snowy and/or icy
roads and drive carefully at a speed appro-
priate for road and weather conditions.
■Maximum load of tire
Check that the maximum load of the
replacement tire is greater than 1/2 of the
Gross Axle Weight Ratings (GAWR) of
either the front axle or the rear axle, which-
ever is greater.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the
load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the
tire. ( P.329)
■Tire types
●Summer tires Summer tires are high-speed performance
tires best suited to
highway driving under
dry conditions. Since summer tires do not
have the same traction performance as
snow tires, summer ti res are inadequate for
driving on snow-covered or icy roads. For
driving on snow-covered roads or icy
roads, the use of snow tires is recom-
mended. When installing snow tires, be
sure to replace all four tires.
●All season tires
All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions as well
as for use year-round. All season tires,
however, do not have adequate traction
performance compared with snow tires in
heavy or loose snow. Also, all season tires
fall short in accelerati on and handling per-
formance compared with summer tires in
highway driving.
●Snow tires
For driving on snow-covered roads or icy
roads, we recommend using snow tires. If
you need snow tires, select tires of the
same size, construction and load capacity
as the originally instal led tires. Since your
vehicle has radial tires as original equip-
ment, make sure your snow tires also have
radial construction. Do not install studded
tires without first checking local regula-
tions for possible restrictions. Snow tires
should be installed on all wheels. ( P.196)
■If the tread on snow tires wears down
below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is
lost.