2023 TOYOTA COROLLA HYBRID coolant temperature

932-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver
of malfunctions in the indicated
vehicle’s systems.
Warning lights
(U.S.A.)
Brake system warning
light
*1 ( P.372)
(Red)
(Canada)
Brake system warning
light
*1 (  P.372)
(Yellow)
Brake system warning
light
*1 ( P.372)
High coolant temperature
warning light
*2 (  P.372)
Hybrid system overheat
warning light
*2 (  P.373)
Charging system warning
light
*1 (  P.373)
Low engine oil pressure
warning light
*2 (  P.373)
(U.S.A.)
Malfunction indicator
lamp
*1 ( P.373)
(Canada)
Malfunction indicator
lamp
*1 ( P.373)
SRS warning light
*1
(  P.374)
(U.S.A.)
ABS warning light*1
(  P.374)
(Canada)
ABS warning light*1
(  P.374)
Inappropriate pedal opera-
tion warning light
*2
(  P.374)
(Red/yel-
low)
Electric power steering
system warning light
*1
(  P.375)
Low fuel leve l warning
light ( P.375)
Driver’s and front passen-
ger’s seat belt reminder
light ( P.375)
*3Rear passengers’
seat belt reminder
lights ( P.376)
*4
Tire pressure warning
light
*1 ( P.376)
PCS warning light
*1
(  P.377)
(Orange)
LTA indicator ( P.377)
(Orange)
LDA indicator ( P.377)
(Orange)
PDA indicator ( P.377)
(Orange)
Dynamic radar cruise con-
trol indicator ( P.377)
(Orange)
Cruise control indicator
( P.378)
Driving assist information
indicator
*1 (  P.378)
Slip indicator
*1 (  P.378)

962-1. Instrument cluster
■Locations of gauges and meters
The units of measure may differ depending on the intended destination of
the vehicle.
Tachometer
Displays the engine speed in revolutions per minute
Outside temperature
Displays the outside temperature within the range of -40°F (-40 °C) to 140°F
(60°C)
Clock ( P. 9 8 )
Multi-information display
Presents the driver with a variety of vehicle data (P.102)
Displays warning messages if a malfunction occurs (P.382)
Speedometer
Fuel gauge
Displays the quantity of fu el remaining in the tank
Odometer and trip meter display ( P.97)
Shift position indicator ( P.180)
Engine coolant temperature gauge
Displays the engine c oolant temperature
Display change button ( P.97)
Gauges and meters (4.2-inch display)
Meter display

972-1. Instrument cluster
2
Vehicle status information and indicators
■Engine speed
On hybrid electric vehicles, engine
speed is precisely controlled in
order to help improve fuel efficiency
and reduce exhaust emissions etc.
There are times when the engine
speed that is displayed may differ
even when vehicle operation and
driving conditions are the same.
■Outside temperature display
●In the following si tuations, the cor-
rect outside tempe rature may not
be displayed, 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 Toyota
dealer.
■Liquid crystal display
 P. 1 0 3
■Customization
The gauges and meters can be cus-
tomized in of the multi-informa-
tion display. ( P.442)
■Changing the display
Press the display change button
until the desired item is dis-
played.
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before u sing the liquid
crystal informat ion display. At
extremely low temperatures, the
information 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 exces-
sive engine braking and possibly
an accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
●Do not let the indicator needle
of the tachometer enter the red
zone, which indicates the maxi-
mum engine speed.
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.414)
Odometer and trip meter
display

992-1. Instrument cluster
2
Vehicle status information and indicators
■Locations of gauges and metersEngine coolant temperature gauge
Displays the engine c oolant temperature
Outside temperature
Displays the outside temperature within the range of -40°F (-40 °C) to 140°F
(60°C)
Hybrid System Indicator/Analog speedometer/Tachometer
Displays hybrid system output or regeneration level ( P.100)
This setting can be changed on the setting screen. ( P.442)
Clock ( P.102)
Fuel gauge
Displays the quantity of fu el remaining in the tank
Odometer and trip meter display ( P.101)
Shift position indicator ( P.180)
Multi-information display
Presents the driver with a variety of vehicle data (P.109)
Displays warning messages if a malfunction occurs (P.382)
Gauges and meters (7-inch display)
Meter display

1012-1. Instrument cluster
2
Vehicle status information and indicators
■Changing the display
Press the display change button
until the desired item is dis-
played.
■Display items
 Odometer
Displays the total distance the vehi-
cle 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 dis-
play change button.
The brightness of the instrument
panel lights can be adjusted.
1 Brighter
2 Darker
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before u sing the liquid
crystal informat ion display. At
extremely low temperatures, the
information 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 exces-
sive engine braking and possibly
an accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
●Do not let the i ndicator needle
of the tachomete r enter the red
zone, which indicates the maxi-
mum engine speed.
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.414)
Odometer and trip meter
display
Changing the instrument
panel light brightness

3156-3. Do-it-yourself maintenance
6
Maintenance and care
Light bulbs
( P.356)
• Bulb with same
number and wattage
rating as original
• Flathead screw- driver
• Wrench
Radiator
and con-
denser
(  P.321)

Tire infla-
tion pres-
sure
( P.342)• Tire pressure gauge
• Compressed air
source
Washer
fluid
( P.324)
• Water or washer
fluid containing anti-
freeze (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 electrically energized.
To avoid death or serious injury,
observe the following precautions.
■When working on the engine
compartment
●Make sure that the “ACCES-
SORY” or “IGNITION ON” on
the multi-inform ation display
and the “READY” indicator are
both off.
●Keep hands, clothing and tools
away from the moving fans.
ItemsParts and tools●Be careful not to touch the
engine, power control unit, radi-
ator, 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 compart-
ment.
●Do not smoke, cause sparks or
expose an open flame to fuel or
the 12-volt battery. Fuel and
12-volt battery fumes are flam-
mable.
●Be extremely cautious when
working on the 12-volt battery. It
contains poisonous and corro-
sive sulfuric acid.
■When working near the elec-
tric cooling fans or radiator
grille
Be sure the power switch is OFF.
With the power switch in ON, the
electric cooling fans may auto-
matically start to r un if the air con-
ditioning is on an d/or the coolant
temperature is high. ( P.321)
■Safety glasses
Wear safety glasses to prevent
flying or falling material, fluid
spray, etc. from getting 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.

3186-3. Do-it-yourself maintenance
Washer fluid tank ( P.324)
Engine coolant reservoir ( P.320)
Fuse boxes ( P.354)
Engine oil level dipstick ( P.319)
Engine oil filler cap ( P.319)
Power control unit coolant reservoir ( P.320)
Brake fluid reservoir ( P.322)
12-volt battery ( P.323)
Radiator ( P.321)
Condenser ( P.321)
Electric cooling fans
With the engine at operating temperature and turned off,
check the oil level on the dip-
stick.
Engine compar tment
Components
Checking and adding the
engine oil

3707-2. Steps to take in an emergency
4Tighten down the towing eye-
let securely using a wheel nut
wrench (if equipped) or hard
metal bar.
5 Securely attach cables or
chains to the towing eyelet.
Take care not to damage the vehi-
cle body.
6Enter the vehicle being towed
and start the hybrid system.
If the hybrid system does not start,
turn the power switch to ON.
7Shift the shift lever to N and
release the parking brake.
Turn automatic mode off.
( P.184)
When the shift lever cannot
be shifted:  P. 1 8 1
■While towing
If the hybrid system is off, the power
assist for the brakes and steering
will not function, making steering
and braking more difficult.
■Wheel nut wrench
Vehicle without wheel nut wrench:
Wheel nut wrench can be pur-
chased at your Toyota dealer.
Vehicle with wheel nut wrench:
Wheel nut wrench is installed in
trunk. ( P.399)
 Fluid leaks under the vehicle.
(Water dripping from the air
conditioning after use is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Engine coolant temperature
gauge needle continually
points higher than normal.
 Changes in exhaust sound
 Excessive tire squeal when
cornering
 Strange noises related to the
suspension system
 Pinging or other noises
related to the hybrid system
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one
If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms