2021 LEXUS RC300 heating

2205-2. Using the air conditioning system
your 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.
■When driving on dusty roads
Close all windows. If dust thrown up by the
vehicle is still drawn into the vehicle after
closing the windows, it is recommended
that the air intake mode be set to outside air
mode and the fan speed to any setting
except off.
■Outside/recirculated air mode
●Setting to the recirculated air mode tem-
porarily is recommended in preventing
dirty air from entering the vehicle interior
and helping to cool the vehicle when the
outside air temperature is high.
●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.

2245-2. Using the air conditioning system
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 wi ll automatically change
from Hi Mid Lo.
The timing of the change 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.
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.
■Seat ventilator
The seat ventilators pr ovide ventilation only,
and do not have a heating/cooling function.
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.
ASeat ventilators
A

3227-2. 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.
 RC350/RC300 AWD
WARNING
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fans or engine drive
belt.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge ( P.66) 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 Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.
 Steam comes out from under the
hood.
Correction procedures

386Alphabetical Index
CareExterior ........................................................... 242
Interior ............................................................. 245
Seat belts........................................................ 245
Wheels and wheel ornaments............ 242
Cargo capacity...............................................125
Cargo hooks ................................................. 229
Center Display ............................................... 212
Chains .............................................................. 206
Child restraint system Child seats definition................................... 40
Child seats installation........................ 44, 47
Front passenger occupant classification system ............................................................. 36
Installing a CRS to the front passenger seat ....................................................................42
Installing CRS with LATCH anchors . 48
Installing CRS with top tether strap.....50
Riding with children ..................................... 40
Types of child restraint system installation method ............................................................. 41
Using an anchor bracket .......................... 49
Child safety Airbag precautions.......................................32
Battery precautions ........................ 264, 321
Child restraint system.......................... 40, 41
Heated steering wheel or seat heater precautions................................................ 223
How your child should wear the seat belt ............................................................................ 25
Installing child restraints ............................ 40
Moon roof precautions ............................. 116
Power window lock switch...................... 113
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 40
Trunk precautions .......................................... 91
Cleaning Exterior ........................................................... 242
Interior ............................................................. 245
Radar sensor................................................. 158
Seat belts........................................................ 245
Wheels and wheel ornaments............ 242 Clock ........................................................66, 230
Clock settings ............................................... 230
Coat hooks..................................................... 230
Compass ......................................................... 237
Condenser ..................................................... 262
Console box .................................................. 228
Consumption screen .....................................79
Cooling system............................................. 260
Engine overheating................................... 322
Cornering lights .............................................143 Replacing light bulbs ................................282
Cruise control Dynamic radar cruise control with full-speed range ........................................176
Cup holders ................................................... 228
Current fuel consumption ...........................73
Curtain shield airbags .................................. 28
Customizable features ................................351
D
Daytime running light system ................... 142
Daytime running lights Replacing light bulbs ................................282
Defogger Outside rear view mirrors.......................219
Rear window ..................................................219
Windshield ......................................................219
Differential Front differential oil............. .......................333
Rear differential oil......... ..................... .......333
Dimension ...................................................... 328
Dinghy towing.................................................126
Display Center Display .............................................. 212
Drive information .......................................... 73
LDA (Lane Departure Alert with steering control) ........................................................... 171
Multi-information display ............................ 71
Warning messages.................................. 305
Distance until next engine oil change .... 70
Do-it-yourself maintenance .................... 249
Door courtesy lights ................................... 225

388Alphabetical Index
If the engine will not start .........................314
If your vehicle has to be stopped in an
emergency ................................................286
Ignition switch (engine switch) ............. 127
Overheating................................................. 322
Tachometer ..................................................... 66
Engine coolant Capacity ......................................................... 332
Checking .......................................................260
Preparing and checking before winter.........................................................................205
Engine coolant temperature gauge ....... 66
Engine immobilizer system ........................ 56
Engine oil Capacity .........................................................330
Checking .......................................................258
Preparing and checking before winter.........................................................................205
Warning light ............................................... 296
Engine oil maintenance data .................. 260
Engine oil pressure gauge ...........................74
Engine oil temperature gauge ...................74
Engine switch .................................................. 127 Auto power off function .......................... 130
Changing the engine switch modes.. 129
If your vehicle has to be stopped in an
emergency ................................................286
EPS (Electric Power Steering) ................201 Warning light ............................................... 297
Event data recorder (EDR) ............................6
F
First-aid kit storage belt ............................ 229
Flat tire Tire pressure warning system .............268
Vehicles with a spare tire ...................... 307
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 333
Brake.................................................... 262, 334
Washer ........................................................... 264
Footwell light ................................................. 225 Front passenger occupant classification
system .............................................................. 36
Front position lights Wattage ......................................................... 338
Front seats Adjustment ....................................................... 99
Cleaning .........................................................245
Correct driving posture ............................ 23
Driving position memory ........................ 102
Head restraints............................................. 105
Memory recall function............................ 104
Power easy access system .................... 102
Seat heaters .................................................. 223
Seat position memory .............................. 102
Seat ventilators ............................................ 223
Front side marker light Light switch .....................................................142
Front turn signal lights Replacing light bulbs ................................282
Turn signal lever .......................................... 136
Wattage ......................................................... 338
Fuel Capacity ........................................................ 330
Fuel gauge ........................................................ 66
Fuel pump shut off system..................... 294
Information ....................................................339
Refueling.......................................................... 155
Type ................................................................. 330
Warning light ...............................................299
Fuel consumption Average fuel economy .............................. 73
Current fuel consumption ........................ 73
Fuel filler door If the fuel filler do or cannot be opened
........................................................................... 316
Refueling.......................................................... 155
Fuel gauge ......................................................... 66
Fuel pump shut off system........................ 294
Fuses ................................................................. 278
G
Garage door opener ................................. 232

391Alphabetical Index
Moon roofDoor lock linked moon roof operation............................................................................ 115
Jam protection function............................. 115
Operation..........................................................114
Multi-information display .............................. 71 Audio system-linked display................... 76
Boost gauge.....................................................74
Drive information ...........................................73
Drive information 1/Drive information 2/Drive information 3..............................73
Driving assist system information display ............................................................................ 76
Dynamic radar cruise control ............... 176
Eco Driving Indicator ..................................74
Engine oil pressure gauge ........................74
Engine oil temperature gauge ................74
Gear Position ................................................. 75
G-force...............................................................74
LDA (Lane Departure Alert with steering control) ............................................................171
Menu icons .......................................................72
Meter control switches ...............................72
Navigation system-linked display ........ 76
Settings .............................................................. 76
Tire pressure ....................................... 75, 268
Units .................................................................... 75
Vehicle sway warning ................................ 75
Warning message display ....................... 76
Warning messages ..................................303
N
Navigation system-linked display.............76
Noise from under vehicle .............................. 5
O
“ODO TRIP” switch ...................................... 70
Odometer ......................................................... 70
Odometer and trip meter display “ODO TRIP” switch .................................... 70 Oil
Engine oil....................................................... 330
Front differential oil............. .......................333
Rear differential oil......... ..................... .......333
Opener Fuel filler door ............................................... 155
Hood ................................................................255
Trunk ................................................................... 92
Outer foot lights Location .......................................................... 225
Outside rear view mirrors Adjustment ....................................................... 110
BSM (Blind Spot Monitor)....................... 191
Folding.................................................................. 111
Linked mirror functi on when reversing111
Mirror position memory .......................... 102
Outside rear view mirror defoggers .219
RCTA function ............................................... 191
Outside temperature.................................... 66
Overheating .................................................. 322
P
Paddle shift switches ..........................133, 134
Panic mode ....................................................... 86
Parking brake Operation ........................................................137
Parking brake engaged warning buzzer........................................................................... 138
Warning light .............................................. 300
Warning message ...................................... 138
Parking lights Light switch .....................................................142
Replacing light bulbs ................................282
PCS (Pre-Collision System) Function ............................................................162
PCS OFF switch ......................................... 164
Warning light .............................................. 298
Warning message .................................... 303
Personal lights............................................... 225
Power control unit coolant Preparing and checking before winter......................................................................... 205