2020 LEXUS RC300 engine overheat

2155-2. Using the air conditioning system
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

275
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers.................. 276
If your vehicle has to be stopped in an emergency .......................... 276
If the vehicle is trapped in rising water............................................ 277
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 279
If you think something is wrong ........................................................ 282
Fuel pump shut off system ..... 283
If a warning light turns on or a warning buzzer sounds ....... 284
If a warning message is displayed ........................................................ 292
If you have a flat tire.................. 296
If the engine wi ll not start .......303
If you lose your keys ................. 305
If the fuel filler door cannot be opened........................................ 305
If the electronic key does not operate properly .................... 306
If the vehicle battery is discharged ........................................................ 308
If your vehicle overheats .......... 311
If the vehicle becomes stuck ......................................................... 315

3117-2. Steps to take in an emergency
7
When trouble arises
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.
WARNING
●When working with the battery, always
wear safety glasses and take care not
to allow any battery fluids (acid) to
come into contact with skin, clothing
or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area
with water and seek medical attention.
Place a wet sponge or cloth over the
affected area until medical attention
can be received.
●Always wash your hands after handling
the battery support, terminals, and
other battery-related parts.
●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.64) 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

376Alphabetical Index
Exterior ........................................................... 234
Interior ............................................................. 237
Seat belts........................................................ 237
Cargo capacity...............................................123
Cargo hooks ................................................... 221
Center Display ............................................. 204
Chains ................................................................199
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 ....................... 256, 310
Child restraint system.......................... 40, 41
Heated steering wheel or seat heater precautions.................................................. 214
How your child should wear the seat belt ............................................................................ 25
Installing child restraints ............................ 40
Moon roof precautions ..............................114
Power window lock switch........................ 111
Removed electronic key battery precau- tions ...............................................................268
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 40
Trunk precautions ........................................ 89
Cleaning Aluminum wheels ...................................... 234
Exterior ........................................................... 234
Interior ............................................................. 237
Radar sensor..................................................152
Seat belts........................................................ 237 Clock ........................................................ 64, 222
Clock settings ............................................... 222
Coat hooks..................................................... 222
Compass ......................................................... 229
Condenser ..................................................... 254
Console box .................................................. 220
Consumption screen ..................................... 77
Cooling system............................................. 252
Engine overheating...................................... 311
Cornering lights ............................................ 138 Replacing light bulbs ................................ 272
Cruise control Dynamic radar cruise control............... 170
Cup holders ................................................... 220
Current fuel consumption ............................ 71
Curtain shield airbags .................................. 28
Customizable features ................................341
D
Daytime running light system ................... 137
Daytime running lights Replacing light bulbs ................................ 272
Defogger Outside rear view mirrors........................ 211
Rear window ................................................... 211
Windshield ....................................................... 211
Differential Front differential oil............. ....................... 323
Rear differential oil......... ..................... ....... 323
Dimension ....................................................... 318
Dinghy towing................................................. 124
Display Center Display ............................................204
Drive information ............................................ 71
LDA (Lane Departure Alert with steering control) ......................................................... 165
Multi-information display .......................... 69
Warning messages...................................293
Distance until next engine oil change .... 68
Do-it-yourself maintenance ......................241
Door courtesy lights ..................................... 217

377Alphabetical Index
Door lockDoors.................................................................. 86
Smart access system with push-button start ................................................................... 93
Wireless remote control........................... 84
Doors Automatic door lock ing and unlocking
system .............................................................88
Door glasses ................................................... 110
Door lock.......................................................... 86
Open door warning buzzer .........87, 88, 288
Open door warning light ......................288
Outside rear view mirrors ..................... 108
Drive distance .................................................... 71
Drive info 1/Drive info 2/Drive info 3...... 71
Drive information ............................................. 71
Driver’s seat position memory Driving position memory........................ 100
Memory recall function ............................102
Power easy access system .................... 100
Drive-start control ......................................... 117
Driving Break-in tips .....................................................117
Correct driving posture .............................23
Driving mode select switch .................... 192
Procedures ...................................................... 116
Winter drive tips.......................................... 198
Driving assist system information display ..............................................................................74
Driving information display .......................... 71
Driving position memory........................... 100 Memory recall function ............................102
Power easy access system .................... 100
Driving range ..................................................... 71
DRS (Dynamic Rear Steering) ................194
Dynamic radar cruise control ..................170 Warning message............ ............... 177, 292
Dynamic Rear Steering (DRS) ................194
E
Eco Driving Indicator.....................................72 Eco Driving Indicator Light .........................72
EDR (Event data recorder) ............................6
Elapsed time ....................................................... 71
Electric Power Steering (EPS) ................194
Warning light .............................................. 286
Electronic key .................................................. 82 Battery-saving function.............................. 94
If the electronic key does not operate properly ...................................................... 306
Replacing the battery ............................... 267
Emergency flashers .....................................276
Emergency, in case of If a warning buzzer sounds...................284
If a warning light turns on.......................284
If a warning message is displayed ..... 292
If the battery is discharged ................... 308
If the electronic key does not operate properly ...................................................... 306
If the engine will not start....................... 303
If the fuel filler do or cannot be opened
......................................................................... 305
If the vehicle is trapped in rising water .......................................................................... 277
If you have a flat tire ..................................296
If you lose your keys ................................ 305
If you think something is wrong..........282
If your vehicle becomes stuck .............. 315
If your vehicle has to be stopped in an emergency ................................................. 276
If your vehicle needs to be towed ..... 279
If your vehicle overheats ........................... 311
Engine ACCESSORY mode................................ 127
Compartment.............................................. 249
Engine switch ................................................ 125
Fuel pump shut off system.....................283
Hood ................................................................ 247
How to start the engine ........................... 125
Identification number ................................ 319
If the engine will not start....................... 303
If your vehicle has to be stopped in an emergency ................................................. 276

378Alphabetical Index
Ignition switch (engine switch) .............125
Overheating.................................................... 311
Tachometer ..................................................... 64
Engine coolant Capacity ........................................................... 321
Checking ....................................................... 252
Preparing and checking before winter.......................................................................... 198
Engine coolant temperature gauge ....... 64
Engine immobilizer system ........................ 56
Engine oil Capacity ......................................................... 320
Checking .......................................................250
Preparing and checking before winter.......................................................................... 198
Warning light ...............................................285
Engine oil maintenance data .................. 252
Engine oil pressure gauge ...........................72
Engine oil temperature gauge ...................72
Engine switch ..................................................125 Auto power off function ...........................128
Changing the engine switch modes.. 127
If your vehicle has to be stopped in an
emergency ................................................ 276
EPS (Electric Power Steering) ................194 Warning light ...............................................286
Event data recorder (EDR) ............................6
F
First-aid kit storage belt .............................. 221
Flat tire Tire pressure warning system .............260
Vehicles with a spare tire ...................... 296
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 322
Brake.................................................... 254, 323
Washer ........................................................... 256
Footwell light ................................................... 217
Front passenger occupant classification system .............................................................. 36 Front position lights
Wattage ..........................................................328
Front seats Adjustment ....................................................... 97
Cleaning ......................................................... 237
Correct driving posture ............................ 23
Driving position memory ........................ 100
Head restraints............................................. 103
Memory recall function............................ 102
Power easy access system .................... 100
Seat heaters ....................................................214
Seat position memory ..............................100
Seat ventilators ..............................................214
Front side marker light Light switch .....................................................137
Front turn signal lights Replacing light bulbs ................................ 272
Turn signal lever ...........................................134
Wattage ..........................................................328
Fuel Capacity .........................................................320
Fuel gauge ........................................................ 64
Fuel pump shut off system.....................283
Information ....................................................329
Refueling.......................................................... 149
Type ..................................................................320
Warning light .............................................. 288
Fuel consumption Average fuel economy ................................ 71
Current fuel consumption .......................... 71
Fuel filler door If the fuel filler do or cannot be opened
......................................................................... 305
Refueling.......................................................... 149
Fuel gauge ......................................................... 64
Fuel pump shut off system........................ 283
Fuses ................................................................. 269
G
Garage door opener ................................. 224
Gauges ............................................................... 64
Gear Position ....................................................73

381Alphabetical Index
Moon roofDoor lock linked moon roof operation............................................................................ 113
Jam protection function............................. 113
Operation..........................................................112
Multi-information display ............................ 69 Audio system-linked display....................74
Boost gauge.....................................................72
Drive information ............................................ 71
Drive information 1/Drive information 2/Drive information 3............................... 71
Driving assist system information display .............................................................................74
Dynamic radar cruise control ...............170
Eco Driving Indicator ..................................72
Engine oil pressure gauge ........................72
Engine oil temperature gauge ................72
Gear Position ..................................................73
G-force...............................................................72
LDA (Lane Departure Alert with steering control) ......................................................... 165
Menu icons ...................................................... 70
Meter control switches .............................. 70
Navigation system-linked display .........74
Settings ...............................................................74
Tire pressure ....................................... 73, 260
Units .....................................................................73
Vehicle sway warning .................................73
Warning message display ........................74
Warning messages .................................. 292
N
Navigation system-linked display.............74
Noise from under vehicle .............................. 5
O
“ODO TRIP” switch ...................................... 68
Odometer ......................................................... 68
Odometer and trip meter display “ODO TRIP” switch .................................... 68 Oil
Engine oil........................................................320
Front differential oil............. ....................... 323
Rear differential oil......... ..................... ....... 323
Opener Fuel filler door ............................................... 149
Hood ................................................................ 247
Trunk ...................................................................90
Outer foot lights Location ............................................................ 217
Outside rear view mirrors Adjustment ..................................................... 108
BSM (Blind Spot Monitor)..................... 184
Folding.............................................................. 109
Linked mirror functi on when reversing
........................................................................... 109
Mirror position memory ..........................100
Outside rear view mirror defoggers .. 211
RCTA function ............................................. 184
Outside temperature.................................... 64
Overheating ..................................................... 311
P
Paddle shift switches ........................... 131, 132
Panic mode ....................................................... 84
Parking brake Operation ....................................................... 135
Parking brake engaged warning buzzer........................................................................... 135
Warning light .............................................. 286
Warning message ...................................... 135
Parking lights Light switch .....................................................137
Replacing light bulbs ................................ 272
PCS (Pre-Collision System) Function ........................................................... 156
PCS OFF switch ......................................... 158
Warning light ...............................................287
Warning message ..................................... 292
Personal lights................................................. 217