2022 LEXUS RCF engine overheat

2205-2. Using the air conditioning system
RC F Owner's Manual
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 will 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.
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.
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

291
RC F Owner's Manual
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers.................. 292
If your vehicle has to be stopped in an emergency .......................... 292
If the vehicle is submerged or water on the road is rising .. 293
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 295
If you think something is wrong ........................................................ 298
Fuel pump shut off system ..... 299
If a warning light turns on or a warning buzzer sounds ....... 300
If a warning message is displayed ........................................................ 308
If you have a flat tire (vehicles with an emergency tire puncture
repair kit) ..................................... 311
If you have a flat tire (vehicles with a spare tire) ................................ 321
If the engine wi ll not start .......327
If you lose your keys ................. 329
If the fuel filler door cannot be opened........................................ 329
If the electronic key does not operate properly .................... 330
If the vehicle battery is discharged ........................................................ 332
If your vehicle overheats ........ 336
If the vehicle becomes stuck ........................................................ 338

3107-2. Steps to take in an emergency
RC F Owner's Manual
power off function. Next time when starting
the engine, increase the engine speed
slightly and maintain that level for approxi-
mately 5 minutes to recharge the battery.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●The automatic headlight leveling system
●Automatic High Beam
■If “Radar Cruise Control Unavailable” is
displayed
The dynamic radar cruise control system
cannot be used temporarily. Use the system
when it becomes available again.
■If a message that indicates the malfunc-
tion of front camera is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.155, 303)
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert with steering
control)
●Dynamic radar cruise control
●Automatic High Beam
■If a message that indicates the malfunc-
tion of radar sensor is displayed
The following systems may be suspended
until the problem shown in the message is
resolved.P.155, 300
●PCS (Pre-Collision System)
■If “Maintenance Required Soon” is dis-
played
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been
reset. If necessary, perform maintenance.
Please reset the message after the mainte-
nance is performed. ( P.255)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple- ment” for the main
tenance interval
applicable to your vehicle.
■If “Maintenance Required Visit Your
Dealer” is displayed
Indicates that all mainte nance is required to
correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message has been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. ( P.255)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the main tenance interval
applicable to your vehicle.
■If “Active Rear Wing Off Go to Settings
to turn On” is displayed
The active rear wing switch was pressed
when the active rear wing
* was disabled.
Enable the active rear wing before pressing
the active rear wing switch. ( P.195)
*: If equipped
■If “TVD System Overheated Reduce
Engine Speed and Load” is displayed
The TVD system
* has overheated, this mes-
sage may be displayed when driving under
high load conditions, such as the following:
●When driving at high speeds or through
sharp turns continuously
●When either rear tire has lost traction
and spun continuously
Drive the vehicle for a while, while avoiding
high load conditions.
*: If equipped
■If a message that indicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the
multi-information displa y is malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.

3367-2. Steps to take in an emergency
RC F Owner's Manual
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.
Cooling fans
Radiator
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4
The coolant level is satisfactory if it
is between the full (“FULL”) and low
(“LOW”) lines on the reservoir.
Reservoir cap
“FULL”
“LOW”
5 Add coolant if necessary.
Water can be used in an emergency if
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
A
B
A
B
C

395Alphabetical Index
RC F Owner's Manual
Seat belts........................................................ 243
Wheels and wheel ornaments............ 239
Cargo capacity...............................................126
Cargo hooks ................................................. 225
Center Display .............................................208
Chains .............................................................. 204
Child restraint system Fixed with a LATCH system .................. 49
Fixed with a seat belt................................... 46
Front passenger occupa nt classification
system ............................................................. 36
Installing a CRS to the front passenger seat ................................................................... 44
Points to remember .....................................42
Riding with children ......................................42
Types of child restraint system installation method ........................................................... 43
Using an anchor bracket ............................ 51
Child safety Airbag precautions.......................................32
Battery precautions ......................270, 335
Child restraint system................................. 43
Heated steering wheel or seat heater
precautions.................................................. 219
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................. 116
Power window lock switch...................... 113
Seat belt extender precautions ............. 25
Seat belt precautions ...................................42
Trunk precautions ........................................ 95
Cleaning Exterior .....................................238, 247, 251
Interior ............................................................. 243
Radar sensor..................................................153
Seat belts........................................................ 243
Wheels and wheel ornaments............ 239
Clock ................................................................ 228
Clock settings ............................................... 228
Coat hooks......................................................227
Compass ......................................................... 234
Condenser ..................................................... 268 Console box .................................................. 225
Consumption screen .................................... 83
Cooling system..............................................267
Engine overheating...................................336
Cruise control Dynamic radar cruise control................. 171
Cup holders Front cup holders ...................................... 224
Rear cup holders........................................ 224
Current fuel consumption .......................... 75
Curtain shield airbags .................................. 28
Customizable features .. ............................358
D
Daytime running light system .................. 138
Daytime running lights
Replacing light bulbs................................ 287
Defogger Outside rear view mirrors...................... 215
Rear window ................................................. 215
Windshield ..................................................... 215
Differential Differential oil ...............................................344
Dimension ...................................................... 340
Dinghy towing................................................. 127
Display Center Display ........................................... 208
Drive information .......................................... 75
LDA (Lane Departure Alert with steering control) ......................................................... 166
Multi-information display .......................... 73
Warning message .................................... 308
Do-it-yourself maintenance .................... 256
Door courtesy lights ..................................... 221
Door lock Doors .................................................................. 92
Smart access system with push-button start ...................................................................98
Wireless remote control ...........................90
Doors Automatic door locking and unlocking system.............................................................. 94

396Alphabetical Index
RC F Owner's Manual
Door glasses ....................................................112
Door lock.......................................................... 92
Open door warning buzzer93, 94, 304
Open door warning light ......................304
Outside rear view mirrors ....................... 110
Drive distance ...................................................75
Drive info 1/Drive info 2/Drive info 3.....75
Drive information ............................................75
Driver’s and front passenger’s seat belt reminder light............................................. 304
Driver’s seat position memory Driving position memory........................ 105
Memory recall function ........................... 106
Power easy access system .................... 105
Drive-start control ......................................... 119
Driving Break-in tips .................................................... 119
Correct driving posture .............................23
Driving mode select switch .................... 192
Procedures ...................................................... 118
Winter drive tips......................................... 203
Driving information display .........................75
Driving position memory........................... 105 Memory recall function ........................... 106
Power easy access system .................... 105
Driving range ....................................................75
Driving support system information display ...............................................................................81
Dynamic radar cruise control ................... 171 Warning message.......................................178
E
Eco Driving Indicator.....................................76
Eco Driving Indicator Light .........................76
EDR (Event data recorder) ........................... 8
Elapsed time ......................................................75
Electric Power Steering (EPS) ................199Electric power steer ing system warning
light ................................................................ 302
Electronic key .................................................. 88 Battery-saving function ............................. 99 If the electronic key does not operate
properly ...................................................... 330
Replacing the battery ................................ 281
Emergency flashers .................................... 292
Emergency tire puncture ............................ 311
Emergency, in case of If a warning buzzer sounds.................. 300
If a warning light turns on...................... 300
If a warning message is displayed.... 308
If the battery is discharged .................... 332
If the electronic key does not operate properly ...................................................... 330
If the engine will not start........................ 327
If the fuel filler do or cannot be opened
..........................................................................329
If the vehicle is submerged or water on the road is rising ...................................... 293
If you have a flat tire ........................... 311, 321
If you lose your keys .................................329
If you think something is wrong......... 298
If your vehicle becomes stuck ............ 338
If your vehicle has to be stopped in an emergency ................................................. 292
If your vehicle needs to be towed .....295
If your vehicle overheats ........................336
Engine ACCESSORY mode............................... 130
Compartment..............................................265
Engine switch ................................................ 128
Fuel pump shut off system.....................299
Hood ................................................................ 262
Identification number .................................341
If the engine will not start........................ 327
If your vehicle has to be stopped in an emergency ................................................. 292
Ignition switch (engine switch)............. 128
Overheating .................................................336
Tachometer ..................................................... 66
Engine coolant Capacity ......................................................... 342
Checking ....................................................... 267

400Alphabetical Index
RC F Owner's Manual
“F” content ......................................................... 77
Gear Position ................................................. 76
G-force.............................................................. 79
History (Lap timer) ...................................... 78
Lap timer ............................................................ 77
LDA (Lane Departure Alert with steering control) ..........................................................166
Menu icons .......................................................74
Meter control switches ...............................74
Navigation system-linked display ..........81
Pop-up display................................................73
Settings ................................................................81
Tire pressure ........................................76, 273
Torque distribution ...................................... 78
Units .................................................................... 76
Vehicle sway warning ................................ 76
Warning message.................................... 308
Warning message display .........................81
N
Navigation system-linked display..............81
Noise from under vehicle ...............................6
O
“ODO TRIP” switch .......................................72
Odometer ..........................................................72
Odometer and trip meter display ............72 Display items ....................................................72
“ODO TRIP” switch ..................................... 72
Oil Differential oil ............................................... 344
Engine oil .........................................................341
Opener Fuel filler door............................................... 150
Hood................................................................ 262
Trunk ................................................................... 96
Outer foot lights Location............................................................ 221
Outside rear view mirrors Adjustment....................................................... 110
BSM (Blind Spot Monitor) ..................... 179 Folding.................................................................. 111
Linked mirror function when reversing111
Mirror position memory .......................... 105
Outside rear view mirror defoggers 215
RCTA function ..............................................179
Outside temperature.................................... 66
Overheating .................................................. 336
P
Paddle shift switches ..........................134, 135
Panic mode ....................................................... 90
Parking brake Operation ........................................................137
Parking brake engaged warning buzzer............................................................................137
Parking brake warning light .................302
Warning message .......................................137
Parking lights Light switch .................................................... 138
Replacing light bulbs................................ 287
PCS (Pre-Collision System) Function ............................................................157
PCS OFF switch ......................................... 159
PCS warning light .................................... 303
Personal lights................................................. 221
Power control unit coolant Preparing and checking before winter..........................................................................203
Power easy access system ....................... 105
Power outlet .................................................. 226
Power steering (Elect ric power steering
system) ............................................................199 Electric power steering system warning light ................................................................302
Power windows Door lock linked window operation ... 113
Jam protection function ............................. 112
Operation ......................................................... 112
Window lock switch.................................... 113
Pre-Collision System (PCS) Function ............................................................157
PCS OFF switch ......................................... 159