2021 Lexus LC500C coolant temperature

712-1. Instrument cluster
2
Vehicle status information and indicators
*1: These lights turn on when the engine switch is turned to ON to indicate that a
system check is being performed. They
will turn off after the engine is started, or
after a few seconds. There may be a
malfunction in a system if a light does
not come on, or turn off. Have the vehi-
cle inspected by your Lexus dealer.
*2: This light illuminates on the multi-infor- mation display.
*3: The light flashes to indicate a malfunc-tion.
*4: This light illuminates on the center panel.
The indicators inform the driver of the
operating state of the vehicle’s various
systems.
(Canada)
ABS warning light*1
(  P.315)
(red)
Electric power steering sys-
tem warning light
*1 ( P.315)
(yellow)
Electric power steering sys-
tem warning light
*1 ( P.315)
(Flashes or
illuminates)
PCS warning light*1
(  P.316)
(orange)
LKA indicator*2 ( P.316)
Slip indicator
*1 (  P.316)
Brake Override System
warning light
(  P.317)/Drive-Start Con-
trol warning light
*2 (  P.317)
Brake hold operated indica-
tor
*1, 3 (  P.317)
(U.S.A.)
Parking brake indicator*3
(  P.317)
(Canada)
Parking brake indicator*3
(  P.317)
(yellow)
Brake system warning light*1
(  P.318)
Low fuel level warning light
(  P.318)
Driver’s and front passen-
ger’s seat belt reminder light
(  P.318)
Rear passengers’ seat belt
reminder lights
*4 (  P.318)
Master warning light
*1
(  P.319)
Tire pressure warning light*1,
3
(  P.319)
High coolant temperature
warning light
*2 (  P.319)
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning light not come on
when you start the engine, this could
mean that these systems are not avail-
able to help protect you in an accident,
which could result in death or serious
injury. Have the vehicle inspected by
your Lexus dealer immediately if this
occurs.
Indicators

752-1. Instrument cluster
2
Vehicle status information and indicators
The units used on the meters may differ depending on the target region.
Engine oil temperature gauge/Eco Driving Indicator
Displays the engine oil temperat ure or Eco Driving Indicator (P.73)
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
Tachometer
Displays the engine speed in revolutions per minute
Speedometer
Shift position/shift range/gear position ( P.150)
Shift position indicator ( P.152)
Clock
Time displayed is linked to the analog clock on the instrument panel. (P.249)
Engine coolant temperature gauge
Displays the engine coolant temperature
If the engine coolant temperature gauge indicator enters the red zone, a buzzer sounds
Gauges and meters
When the main meter is in the side posi tion, some of the meter displays and the
gauge layout will be changed.
Meter display
A
B
C
D
E
F
G
H

762-1. Instrument cluster
and the high coolant temperature warning light comes on
Odometer and trip meter display
Odometer:
Displays the total distance the vehicle has been driven
Trip meter:
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 inde-
pendently
Fuel gauge
Displays the quantity of fuel remaining in the tank
Multi-information display
Presents the driver with a variety of vehicle data (P.79)
Displays warning messages in case of a malfunction (P.323)
■Rev indicator
When the engine speed reaches a set
speed or the red zone, a ring-shaped
indicator will be displayed on the
tachometer.
The indicator will be displayed in
amber ( ) when the engine speed
reaches a set speed, and in red ( )
when the engine speed reaches the
red zone. This setting can be enabled
on the multi-information display.
(  P.83)
■Rev peak
When the engine speed reaches or
exceeds the 3600 r/min, an afterim-
age of the tachometer will be displayed at the highest engine speed for
approximately 1 second.
■The meters and display illuminate when
The engine switch is in ON.
■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 driving under extremely high load
conditions, make sure to sufficiently warm
up the engine.
I
J
K
A
B

772-1. Instrument cluster
2
Vehicle status information and indicators
■Instrument panel brightness adjustment
The brightness of the instrument panel
lights is automatically adjusted based on the
light sensor detecting how bright the sur-
roundings are.
■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 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.
■Speed unit setting for the speedometer
When the speed unit has been changed
from the default setting, the vehicle speed in
the default unit is also displayed in the
meter.
■Pop-up display
●In some situations, su ch 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.83)
■Liquid crystal display
Small spots or light spots may appear on the
display. This phenomen on is characteristic
of liquid crystal disp lays, and there is no
problem continuing to use the display.
■Customization
The meter display can be customized on
the multi-information display. ( P.367)
The odometer and trip meter displays
can be switched. When the trip meter
is displayed, pressing and holding the
button will reset the trip meter.
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.345)
• The engine coolant temperature gauge is in the red zone (H).
• The engine oil temperature gauge is in the red zone (H).
Changing between the odome-
ter and trip meter

1564-2. Driving procedures
changed in the following situation:
When vehicle speed drops (down-
shift only).
 When it is necessary to protect the
engine or automatic transmission
when the engine coolant tempera-
ture is low, the automatic transmis-
sion fluid temperature is high or low,
or other reasons.
Also, the gear will not shift when the
vehicle speed is low, even if an upshift
operation is performed.
■Downshifting restriction warning
buzzer
To help ensure safety and driving perfor-
mance, downshifting operation may some-
times be restricted. In some circumstances,
downshifting may not be possible even
when the paddle shift switch is operated. (A
buzzer will sound twice.)
1 Right turn
2 Lane change to the right (move the
lever partway and release it)
The right hand signals will flash 3 times.
3Lane change to the left (move the
lever partway and release it)
The left hand signals will flash 3 times.
4Left turn
■Turn signals can be operated when
The engine switch is in ON.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear
turn signal lights has not burned out.
■If the turn signals stop flashing before a
lane change has been performed
Operate the lever again.
■Customization
 P.367
Turn signal lever
Operating instructions

2234-6. 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 door or
a side window, or move wipers that
are frozen. Pour warm water over
the frozen area to melt the ice, and
then wipe away the water immedi-
ately to prevent it from freezing.
 When the outside door handle is
frozen, unlock the doors using the
wireless remote control. If the out-
side door handles remain retracted
and do not move even if the doors
are unlocked using the wireless
remote control, pour warm water
over the frozen area to melt the ice
and wipe away the water immedi-
ately to prevent it from freezing. The
outside door handle may not retract
due to ice, however, the outside
door handle will return to the nor-
mal position after the ice melts.
 To ensure proper operation of the
climate control system fan, remove
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
■Driving with tire chains
Do not fit tire chains. Tire chains may
damage the vehicle body and suspen-
sion, and adversely affect driving perfor-
mance.
■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

2716-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P.293)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.278)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Keep hands, clothi ng and tools away
from the moving fan and engine drive
belt.
●Be careful not to touch the engine,
radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil
and other fluids may also be hot.
●Do not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are
flammable.
■When working near the electric cool-
ing fan or radiator grille
Be sure the engine switch is off.
With the engine switch in ON, the elec-
tric cooling fan may automatically start to
run if the air conditioning is on and/or the
coolant temperature is high. ( P.277)
ItemsParts and tools■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

2766-3. Do-it-yourself maintenance
after replacing the engine
●If low quality oil or oil of an inappropriate
viscosity is used
●When driving at high engine speeds or
with a heavy load, or when driving while
accelerating or decelerating frequently
●When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine is cold.
■Engine coolant reservoirReservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line. ( P.345)
■Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F [-
35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-
ture of 55% coolant and 45% deionized
water. (Minimum temperature: -44°F [-
42°C])
For more details about engine coolant, con-
tact your Lexus dealer.
■If the coolant level drops within a short
time of replenishing
Visually check the radi ator, hoses, engine
coolant reservoir caps, drain cock and
WARNING
■Used engine oil
●Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as inflamma-
tion and skin cancer, so care should be
taken to avoid prolonged and
repeated contact. To remove used
engine oil from your skin, wash thor-
oughly with soap and water.
●Dispose of used oil and filters only in a
safe and acceptable manner. Do not
dispose of used oil and filters in house-
hold trash, in sewers or onto the
ground.
Call your Lexus dealer, service station
or auto parts store for information
concerning recycling or disposal.
●Do not leave used engine oil within the
reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the
vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick
every time you refill the vehicle.
●Be sure the engine oi l filler cap is prop-
erly tightened.
Checking the engine coolant
A
B
C