engine coolant LEXUS RCF 2021 Owners Manual

622-1. Instrument cluster
2-1.Instrument cluster
For the purpose of explanation, the following illustrations display all warning lights
and indicators illuminated.
The units used on the meters and some indicators may differ depending on the target
region.
Warning lights inform the driver of mal-
functions in the indicated vehicle sys-
tems.
Warning lights and indicators
The warning lights and indicators on th e instrument cluster, center panel and
outside rear view mirrors inform the driver of the status of the vehicle’s various
systems.
Warning lights and indicators displayed on the instrument cluster
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.302)
(Canada)
Brake system warning light*1
(  P.302)
High coolant temperature
warning light
*2 (  P.302)
Charging syst em warning
light
*1, 2 (  P.302)
Low engine oil pressure warn-
ing light
*2 (  P.303)
(U.S.A.)
Malfunction indicator lamp*1
(  P.303)
(Canada)
Malfunction indicator lamp*1
(  P.303)
SRS warning light
*1 (  P.303)

662-1. Instrument cluster
■Locations of gauges and meters
If the drive mode is changed, some of th e meter displays and the gauge layout will
be changed.
The units used on the meters may differ depending on the target region.
Normal mode
Multi-information display
Presents the driver with a variety of vehicle data ( P.73)
Displays warning messages in case of a malfunction (P.310)
Fuel gauge
Engine coolant temperature gauge
Displays the engine coolant temperature. If the engine coolant temperature gauge indica-
tor ( ) enters the red zone, a buzzer will so und and the indicator will turn red and start
flashing. Also, a warning message will be displayed.
Engine oil temperature gauge
Displays the engine oil temperature. If the engine oil temperature gauge indicator ( )
enters the red zone, the indicator will turn red and start flashing.
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C). Low
outside temperature indicator comes on when the ambient temperature is 37°F (3°C) or
lower.
Gauges and meters
Meter display
A
B
C
D
E

672-1. Instrument cluster
2
Vehicle status information and indicators
Tachometer
Displays the engine speed in revolutions per minute
Digital speedometer
Analog speedometer
Shift position/shift range/gear position (P.132)
Odometer and trip meter display ( P.72)
Eco drive mode
Multi-information display
Presents the driver with a variety of vehicle data ( P.73)
Displays warning messages in case of a malfunction (P.310)
Fuel gauge
Engine coolant temperature gauge
Displays the engine coolant temperature. If the engine coolant temperature gauge indica-
tor ( ) enters the red zone, a buzzer will so und and the indicator will turn red and start
flashing. Also, a warning message will be displayed.
Engine oil temperature gauge
Displays the engine oil temperature. If the engine oil temperature gauge indicator ( )
enters the red zone, the indicator will turn red and start flashing.
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C). Low
outside temperature indicator comes on when the ambient temperature is 37°F (3°C) or
lower.
Eco driving meter
F
G
H
I
J
A
B
C
D
E
F

682-1. Instrument cluster
Displays the vehicle acceleration. The more rapidly the vehicle is accelerated, the lower the
number of blue segments displayed, indicating that your driving is less ecofriendly. This
meter is designed as a guid eline to show the eco-friendliness of your driving.
Digital speedometer
Analog speedometer
Shift position/shift range/gear position ( P.132)
Odometer and trip meter display ( P.72)
SPORT S mode
The units used on the meters may differ depending on the target region.
These illustrations show the default meter display for SPORT S mode. The meter displays
for SPORT S mode can be changed on the setti ngs display of the multi-information display.
Multi-information display
Presents the driver with a variety of vehicle data ( P.73)
Displays warning messages in case of a malfunction (P.310)
Fuel gauge
Engine coolant temperature gauge
Displays the engine coolant temperature. If the engine coolant temperature gauge indica-
tor ( ) enters the red zone, a buzzer will so und and the indicator will turn red and start
flashing. Also, a warning message will be displayed.
Engine oil temperature gauge
Displays the engine oil temperature. If the engine oil temperature gauge indicator ( )
enters the red zone, the indicator will turn red and start flashing.
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C). Low
G
H
I
J
A
B
C
D
E

692-1. Instrument cluster
2
Vehicle status information and indicators
outside temperature indicator comes on when the ambient temperature is 37°F (3°C) or
lower.
Tachometer
Displays the engine speed in revolutions per minute
Digital speedometer
Analog speedometer
Shift position/shift range/gear position (P.132)
Odometer and trip meter display ( P.72)
SPORT S+ mode
The units used on the meters may differ depending on the target region.
These illustrations show the default meter display for SPORT S+ mode. The meter displays
for SPORT S+ mode can be changed on the sett ings display of the multi-information display.
Multi-information display
Presents the driver with a variety of vehicle data ( P.73)
Displays warning messages in case of a malfunction (P.310)
Fuel gauge
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C). Low
outside temperature indicator comes on when the ambient temperature is 37°F (3°C) or
lower.
Engine coolant temperature gauge
Displays the engine coolant temperature. If the engine coolant temperature gauge indica-
tor ( ) enters the red zone, a buzzer will so und and the indicator will turn red and start
flashing. Also, a warning message will be displayed.
F
G
H
I
J
A
B
C
D

712-1. Instrument cluster
2
Vehicle status information and indicators
■Rev peak (Normal mode/SPORT
S mode)
The engine speed reaches or exceeds
3600 rpm, an afterimage of the
tachometer will be displayed at the
highest engine speed for approxi-
mately 1 second.
■Meter display and layout
If the drive mode is changed, some of
the meter displays and the gauge lay-
out will be changed. ( P.192)
■The meters and display illuminate when
The engine switch is in IGNITION ON
mode.
■Welcome illumination of the analog
speedometer
●When the driver’s door is opened, the
analog speedometer will illuminate. Then,
when the driver’s door is closed, the ana-
log speedometer will illuminate and go
off (pulsate) 3 times.
●In the following situations, the analog
speedometer will not pulsate even
though the driver’s door is opened and
closed:
• Within 60 seconds after the analog
meter pulsation completes
• Within 60 seconds of turning the engine switch off
■Variable red zone
To help protect the engine, the engine
speed is controlled by starting the red zone
of the tachometer at different engine
speeds ranging from 3700 rpm to 7300
rpm depending on the engine coolant tem-
perature. Before driv ing under extremely
high load conditions, make sure to suffi-
ciently warm up the engine.
■Eco driving meter
●The number of blue segments displayed
on the eco driving meter
decreases/increases depending on the
vehicle acceleration. Use this meter as a
guideline when you wish to drive in an
eco-friendly manner that reduces fuel
consumption.
However, on a downward grade where
the vehicle can accelerate without the
accelerator pedal being depressed, the
eco driving meter may not display the
eco-driving state correctly.
●When the shift lever is moved to P, N or
R, the segments will turn gray and the eco
driving meter will not operate.
■Dimming the analog speedometer light-
ing
The analog speedometer lighting will be
dimmed when the ambient light is bright,
such as during the daytime, and SPORT S
or SPORT S+ mode is selected.
■Outside temperature display
●In the following situations, the correct
outside temperature may not be dis-
played, or the display may take longer
than normal to change:
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has
Changing the display

722-1. Instrument cluster
changed suddenly (at the entrance/exit of
a garage, tunnel, etc.)
●When “_ _” or “E” is displayed, the system
may be malfunctioning.
Take your vehicle to your Lexus dealer.
■Pop-up display
●In some situations, such as when a switch
operation is performed, a pop-up display
will be temporarily displayed on the
multi-information display.
●Some pop-up displays can be set on/off.
(  P.81)
■Liquid crystal display
Small spots or light spots may appear on the
display. This phenomenon is characteristic
of liquid crystal displays, and there is no
problem continuing to use the display.
■Customization
The meter display can be customized on
the multi-information display. ( P.360)
■Display items
 Odometer
Displays the total distance the vehicle has
been driven.
Trip meter A/trip meter B
Displays the distance the vehicle has been
driven since the meter was last reset. Trip
meters A and B can be used to record and
display different distances independently.
To reset, display the desired trip meter and
press and hold the odometer/trip meter
and trip meter reset button.
■Changing the display
Each time the “ODO TRIP” switch is
pressed, the displayed item will be
changed. When the trip meter is dis-
played, pressing and holding the switch
WARNING
■The information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the in formation display
monitor may respond slowly, and display
changes may be delayed.
For example, there is a lag between the
driver’s shifting and the new gear number
appearing on the display. This lag could
cause the driver to downshift again,
causing rapid and excessive engine brak-
ing and possibly an accident resulting in
death or injury.
NOTICE
■To prevent damage to the engine and
its components
●Do not let the indicator of the tachom-
eter enter the red zone, as it rep-
resents the engine speed range which
exceeds the maximum safe engine
speed.
●In the following situations, the engine
may be overheating. In this case,
immediately stop the vehicle in a safe
place, and check the engine after it has
cooled completely. ( P.337)
• The engine coolant temperature gauge indicator ( ) is in the red
zone and flashing.
• The engine oil temperature gauge indicator ( ) is in the red zone and
flashing.
Odometer and trip meter dis-
play

2034-6. Driving tips
4
Driving
4-6.Driving tips
Use fluids that are appropriate to
the prevailing outside temperatures.
•Engine oil
• Engine coolant
•Washer fluid
Have a service technician inspect
the condition of the battery.
 Have the vehicle fitted with four
snow tires.
Ensure that all tires are the specified size
and the same brand.
Perform the following according to the
driving conditions:
Do not try to forcibly open a window
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
immediately to prevent it from
freezing.
 To ensure proper operation of the
climate control system fan, remove
any snow that has accumulated on
the air inlet vents in front of the
windshield.
 Check for and remove any excess
ice or snow that may have accumu-
lated on the exterior lights, vehicle’s
roof, chassis, around the tires or on
the brakes.
 Remove any snow or mud from the
bottom of your shoes before getting
in the vehicle.
Accelerate the vehicle slowly, keep a
safe distance between you and the
vehicle ahead, and drive at a reduced
speed suitable to road conditions.
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Preparation for winter
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●Use tires of the specified size.
●Maintain the recommended level of air
pressure.
●Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●Use snow tires on all, not just some
wheels.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow
tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle
When driving the vehicle

2586-3. Maintenance
Maintenance”. (To confirm setting,
press .)
3 Select “Yes” and then press .
4 A message will be displayed on the
multi-information display when the
reset procedure has been completed.
You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage.
The use of Lexus repair manuals is recom-
mended.
For details about warra nty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.
Do-it-yourself maintenance
General maintenance
Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice.
WARNING
■If the engine is running
Turn the engine off and ensure that there
is adequate ventilati on before perform-
ing maintenance checks.
Engine compartment
ItemsCheck points
Battery
Check the indicator (if
equipped) and con-
nections. ( P.271)
Brake fluid
Is the brake fluid at the
correct level?
( P.270)
Engine coolant
Is the engine coolant at
the correct level?
( P.269)
Engine oil
Is the engine oil at the
correct level?
( P.267)
Exhaust system
There should not be
any fumes or strange
sounds.

2626-4. Do-it-yourself maintenance
6-4.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
Battery condition
( P.271)
•Warm water
• Baking soda
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( P.270)
• SAE J1703 or
FMVSS No.116 DOT
3 brake fluid
• SAE J1704 or FMVSS No.116 DOT
4 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level( P.269)
•“Toyota Super Long
Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
• For the U.S.A.:“Toy- ota Super Long Life
Coolant” is
pre-mixed with 50%
coolant and 50%
deionized water.
•For Canada:“Toyota Super Long Life
Coolant” is
pre-mixed with 55%
coolant and 45%
deionized water.
•Funnel (used only for adding coolant)
Engine oil level
( P.267)
•“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for adding engine oil)
Fuses ( P.285)
•Fuse with same
amperage rating as
original
ItemsParts and tools