2023 TOYOTA COROLLA HYBRID coolant

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

2734-6. Driving tips
4
Driving
Use fluids that are appropriate
to the prevailing outside tem-
peratures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
Have a service technician
inspect the condition of the
12-volt battery.
 Have the vehicle fitted with
four snow tires or purchase a
set of tire chains for the front
tires.
Ensure that all tires are the same
size and brand, and that chains
match the size of the tires.
Winter driving tips
Carry out the necessary
preparations and inspec-
tions before driving the
vehicle in winter. Always
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions
to reduce the risk of accidents.
Failure to do so m ay result in a
loss of vehicle control and cause
death or serious injury.
●Use tires of the size specified.
●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.
■Driving with tire chains
Observe the following precautions
to reduce the risk of accidents.
Failure to do so may result in the
vehicle being unable to be driven
safely, and may cause death or
serious injury.
●Do not drive in excess of the
speed limit specifi ed for the tire
chains being used, or 30 mph
(50 km/h), whichever is lower.
●Avoid driving on bumpy road
surfaces or over potholes.
●Avoid sudden acceleration,
abrupt steering, sudden brak-
ing and shifting operations that
cause sudden engine braking.
●Slow down sufficiently before
entering a curve to ensure that
vehicle control is maintained.
●Do not use LTA (Lane Tracing
Assist) system.
●Do not use LDA (Lane Depar-
ture Alert) system.
NOTICE
■Repairing or replacing snow
tires
Request repairs or replacement of
snow tires from Toyota dealers or
legitimate tire retailers.
This is because the removal and
attachment of snow tires affects
the operation of the tire pressure
warning valves and transmitters.

3106-2. Maintenance
General maintenance
Listed below are the general
maintenance items that
should be performed at the
intervals specified in the
“Owner’s Warranty Informa-
tion Booklet” or “Owner’s
Manual Supplement/Sched-
uled Maintenance Guide”. It
is recommended that any
problem you notice should
be brought to the attention
of your Toyota dealer or
qualified service shop for
advice.
WARNING
■If the hybrid system is operat-
ing
Turn the hybrid system off and
ensure that there is adequate
ventilation before performing
maintenance checks.
Engine compartment
ItemsCheck points
12-volt batteryCheck the connec-
tions. ( P.323)
Brake fluid
Is the brake fluid at
the correct level?
( P.322)
Engine/power
control unit
coolant
Is the
engine/power con-
trol unit coolant at
the correct level?
( P.320)
Engine oil
Is the engine oil at
the correct level?
( P.318)
Exhaust sys-
temThere should not
be any fumes or
strange sounds.
Radiator/con-
denser
The radiator and
condenser should
be free from for-
eign objects.
( P.321)
Washer fluid
Is there sufficient
washer fluid?
( P.324)
Vehicle interior
ItemsCheck points
Accelerator
pedal
The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Brake pedal
• Does the brake
pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
( P.425)
• Does the brake pedal have the
correct amount
of free play?
( P.425)
ItemsCheck points

3146-3. Do-it-yourself maintenance
6-3.Do-it-yourself maintenance
Do-it-yourself ser vice
precautions
If you perform maintenance
by yourself, be sure to fol-
low the correct procedure
as given in these sections.
Maintenance
ItemsParts and tools
12-volt bat-
tery condi-
tion
( P.323)
•Warm water
• Baking soda
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid
level
( P.322)
• FMVSS No.116
DOT 3 or SAE
J1703 brake fluid
FMVSS No.116
DOT 4 or SAE
J1704 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake
fluid)
Engine/power
control unit
coolant level
( P.320)
• “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.:
“Toyota 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.318)
• “Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine
oil)
Fuses
( P.354)• Fuse with same
amperage rating as
original
Hybrid bat-
tery (trac-
tion battery)
air intake
vent
( P.347)
• Vacuum cleaner,
etc.
ItemsParts and tools