2022 LEXUS RCF engine coolant

3117-2. Steps to take in an emergency
RC F Owner's Manual
7
When trouble arises
■If “See Owner’s Manual” is displayed
●If the following messages are shown, fol-
lowing the instructions, accordingly.
• “Engine Coolant Temp High” ( P.336)
• “Transmission Fluid Temp High” ( P.132)
●If any of the following messages are
shown on the multi-information display, it
may indicate a malf unction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Access System with Elec. Key Malfunc-
tion”
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malfunction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
 Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift lever to P.
 Stop the engine.
 Turn on the emergency flashers.
( P.292)
 Check the degree of the tire dam-
age.
A tire should only be repaired with the
emergency tire puncture repair kit if
the damage is caused by a nail or
NOTICE
■“High Power Consumption Partial
Limit On AC/Heater Operation” is
frequently shown
There is a possible malfunction relating
to the charging system or the battery
may be deteriorating. Have the vehicle
inspected by your Lexus dealer.
If you have a flat tire (vehi-
cles with an emergency tire
puncture repair kit)
Your vehicle is not equipped with a
spare tire, but instead is equipped
with an emergency tire puncture
repair kit.
A puncture caused by a nail or
screw passing through the tire
tread can be repaired temporarily
with the emergency tire puncture
repair kit.
WARNING
■If you have a flat tire
Do not continue drivin g with a flat tire.
Driving even a short distance with a flat
tire can damage the tire and the wheel
beyond repair. Driving with a flat tire may
cause a circumferential groove on the
side wall. In such a case, the tire may
explode when using the emergency tire
puncture repair kit, resulting in death or
serious injury.
Before repairing the vehicle

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

3377-2. Steps to take in an emergency
RC F Owner's Manual
7
When trouble arises
coolant is unavailable.
6Start the engine and turn the air
conditioning system on to check
that the radiator cooling fans oper-
ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fans are oper-
ating by checking the fan sound and air
flow. If it is difficult to check these, turn the
air conditioning system on and off repeat-
edly.
(The fans may not operate in freezing tem-
peratures.)
7 If the fans are not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the
nearest Lexus dealer.
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
●Keep hands and clothing (especially a
tie, a scarf or a muff ler) away from the
fans and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.
●While the engine and radiator are hot,
do not loosen or remove the coolant
reservoircap.
High temperature steam or coolant
couldspray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.

3428-1. Specifications
RC F Owner's Manual
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-6A multigrade
engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 5W-30 is not available, SAE
10W-30 oil may be used. However, it
should be replaced with SAE 5W- 30
at the next oil change.
Outside temperature
Oil viscosity (5W-30 is explained here
as an example): • The 5W in 5W-30 indicates the
characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.
• The 30 in 5W-30 indicates the vis- cosity characteristic of the oil when
the oil is at high temperature. An oil
with a higher viscosity (one with a
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container label:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you
should use.
A
Cooling system
Capacity*12.2 qt. (11.5 L, 10.1 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene glycol-based non-silicate,
non-amine, non-nitrite, and non-borate coolant with
long-life hybrid orga nic acid technology
Do not use plain water alone.

3538-1. Specifications
RC F Owner's Manual
8
Vehicle specifications
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
and additional weight optional engine
Maximum loaded vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight
150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that fol-
lows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options weight
The combined weight of installed regular produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and special trim
RimA metal support for a tire or a tire and tube assem-
bly upon which the tire beads are seated
Rim diameter (Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim
by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight (Total load
capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle’s de signated seating capacity
Vehicle maximum load on the tire
The load on an individual ti re that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by two
Tire related termMeaning

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

397Alphabetical Index
RC F Owner's Manual
Preparing and checking before winter......................................................................... 203
Engine coolant temperature gauge ....... 66
Engine immobilizer system .........................57
Engine oil Capacity ...........................................................341
Checking ....................................................... 265
Low engine oil pressure warning light.......................................................................... 301
Preparing and checking before winter ......................................................................... 203
Engine switch ..................................................128 Auto power off function ............................ 131
Changing the engine switch modes. 130
If your vehicle has to be stopped in an
emergency ................................................ 292
EPS (Electric Power Steering) ................199 Electric power steer ing system warning
light ................................................................ 302
Event data recorder (EDR) ........................... 8
F
First-aid kit storage belt ............................ 225
Flat tire Tire pressure warning system ............. 273
Vehicles with a spare tire ........................ 321
Vehicles without a spare tire .................. 311
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 343
Brake....................................................268, 344
Washer ........................................................... 270
Footwell light ................................................... 221
Front passenger occupant classification system .............................................................. 36
Front seats Adjustment..................................................... 103
Cleaning......................................................... 243
Correct driving posture .............................23
Driving position memory........................ 105
Memory recall function ........................... 106
Power easy access system .................... 105 Seat heaters ....................................................219
Seat position memory .............................. 105
Seat ventilators ..............................................219
Front side marker light Light switch .................................................... 138
Front turn signal lights Replacing light bulbs................................ 287
Turn signal lever .......................................... 136
Fuel Capacity ...........................................................341
Fuel gauge........................................................ 66
Fuel pump shut off system.....................299
Information .................................................... 347
Low fuel level warning light ................. 304
Refueling.......................................................... 150
Type ....................................................................341
Fuel consumption Average fuel economy .............................. 75
Current fuel consumption ........................ 75
Fuel filler door If the fuel filler do or cannot be opened
..........................................................................329
Refueling.......................................................... 150
Fuel gauge ......................................................... 66
Fuel pump shut off system........................ 299
Fuses ................................................................. 283
G
Garage door opener ................................. 229
Gauges ............................................................... 66
Gear Position ....................................................76
G-force................................................................79
Glove box ....................................................... 224
Glove box light ............................................. 224
H
Headlight aim ................................................ 285
Headlights Automatic High Beam system ............. 140
Light switch .................................................... 138
Replacing light bulbs................................ 287

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