2023 TOYOTA RAV4 PRIME engine overheat

15Pictorial index
To prevent freezing (windshield wiper de-icer)*...................P.429
Precautions against car wash
(Rain-sensing windshield wipers)
*.......................................P.473
Replacing the wiper insert .................................... ...............P.519
Fuel filler door ............................................... .....................P.332
Refueling method ............................................... ..................P.332
Fuel type/fuel tan k capacity .................................................P.581
Charging port .................................................. .....................P.97
Charging method ................................................ .................P.113
Tires ....................................................................................P.497
Tire size/inflation pressure ................................... ................P.585
Winter tires/tire chain ........................................ ...................P.413
Checking/rotation/tire pressure warning system
*.................P.497
Coping with flat tires......................................... ....................P.557
Hood ....................................................................................P.486
Opening ........................................................ .......................P.486
Engine oil ..................................................... ........................P.582
Coping with overheat ........................................... ................P.574
Warning messages ..............................................................P.552
Headlights..................................................... ......................P.321
Turn signal lights ...............................................................P.313
Parking lights .....................................................................P.321
Daytime running lights .. ....................................................P.321
Side marker lights ............................................. .................P.321
LED accessory lights
*........................................................P.321
Stop lights/tail lights ........................................ ..................P.321
Tail lights .................................................... ........................P.321
Light bulbs of the exterior lights for driving
(Replacing method: P.528, Watts: P.586)
E
F
G
H
I
J
K
L
M
N
O
P

1693-1. Instrument cluster
3
Vehicle status information and indicators
*1: These lights turn on when the
power switch is turned to ON to
(Yellow)
Brake system warning
light
*1 (  P.541)
Charging system warn-
ing light
*1 (  P.541)
High coolant tempera-
ture warning light
*2
(  P.542)
Hybrid system overheat
warning light
*2 (  P.542)
Low engine oil pressure
warning light
*2 (  P.542)
(U.S.A.)
Malfunction indicator
lamp
*1 ( P.542)
(Canada)
Malfunction indicator
lamp
*1 ( P.542)
SRS warning light
*1
(  P.543)
(U.S.A.)
ABS warning light*1
(  P.543)
(Canada)
ABS warning light*1
(  P.543)
(Red)
Electric power steering
system warning light
*1
(  P.543)
(Yellow)
Electric power steering
system warning light
*1
(  P.543)
(Flashes
or illumi- nates)
PCS warning light*1
(  P.544)
(Orange)
LTA indicator ( P.544)
Intuitive parking assist
OFF indicator
*3 (if
equipped) ( P.544)
PKSB OFF indicator
*1 (if
equipped) ( P.545)
BSM OFF indicator
*1
(  P.545)
RCTA OFF indicator
*1
(  P.545)
Slip indicator light
*1
(  P.546)
Inappropriate pedal oper-
ation warning light
*2
(  P.546)
(Flashes)
Brake hold operated indi-
cator
*1 ( P.546)
(U.S.A.)
(Flashes)
Parking brake indicator
(  P.547)
(Canada)
(Flashes)
Parking brake indicator
( P.547)
Tire pressure warning
light
*1 (if equipped)
(  P.547)
Low fuel level warning
light ( P.547)
Driver’s and front passen-
ger’s seat belt reminder
light ( P.548)
Rear passengers’ seat
belt reminder lights
*4
(  P.548)
Rear passengers’
seat belt reminder
lights ( P.548)

1773-1. Instrument cluster
3
Vehicle status information and indicators
●Displays the outside temperature
within the range of -40°F (-40°C)
to 122°F (50°C).
●When the outside temperature is
approximately 37°F (3°C) or
lower, the indicator will flash
for approximately 10 seconds,
then stay on.
■Liquid crystal display
 P.185
■Customization
Settings (e. g. meter display) can be
changed on the screen of the
multi-informat ion display. (P.191)
Switches the items of the odom-
eter, trip meter A and trip meter
B by pressing the “ODO TRIP”
switch.
When the trip meter is dis-
played, pressing and holding the
switch will reset the trip meter.
The brightness of the instrument
panel lights can be adjusted by
turning the dial.
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
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 shift range appearing on
the display. This lag could cause
the driver to downshift again,
causing rapid and excessive
engine braking and possibly an
accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
The engine may be overheating if
“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the multi-
information displa y. In this case,
immediately stop the vehicle in a
safe place, and c heck the engine
after it has cooled completely.
(  P.574)
Using the “ODO TRIP”
switch
Instrument panel light
control

1853-1. Instrument cluster
3
Vehicle status information and indicators■Display items
 Odometer
Displays the total distance the vehi-
cle has been driven.
Trip meter A/trip meter B
Displays the distan ce the vehicle
has been driven si nce the meter
was last reset. Trip meters A and B
can be used to record and display
different distances independently.
■Changing the display
Each time the “ODO TRIP”
switch is pressed, the displayed
item will be changed. When the
trip meter is displayed, pressing
and holding the switch will reset
the trip meter. The brightness of the instrument
panel lights can be adjusted by
turning the dial.
1
Brighter
2 Darker
■Brightness of the meter lights
(day mode and night mode)
The brightness of the meter lights
can be adjusted individually.
In the following si tuations, the
meters changes between day mode
and night mode.
●Day mode: When the tail lights are
off or when the ta il lights are on
but the surrounding area is bright
●Night mode: When the tail lights
are on and the surrounding area is
dark
NOTICE
■To prevent damage to the
engine and its components
The engine may be overheating if
“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the multi-
information display. In this case,
immediately stop the vehicle in a
safe place, and check the engine
after it has cooled completely.
(  P.574)
Odometer and trip meter
display
Instrument panel light
control

2865-1. Before driving
WARNING
■When the vehicle is stopped
●Do not depress the accelerator
pedal unnecessarily.
If the vehicle is in any gear other
than P or N, the vehicle may
accelerate suddenly and unex-
pectedly, causing an accident.
●In order to prev ent accidents
due to the vehicle rolling away,
always keep depressing the
brake pedal while stopped with
the “READY” indicator is illumi-
nated, and apply the parking
brake as necessary.
●If the vehicle is stopped on an
incline, in order to prevent acci-
dents caused by the vehicle roll-
ing forward or backward, always
depress the brake pedal and
securely apply the parking
brake as needed.
●Avoid revving or racing the
engine.
Running the engine at high
speed while the vehicle is
stopped may cause the exhaust
system to overheat, which could
result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette
lighters, spray cans, or soft
drink cans in the vehicle when it
is in the sun.
Doing so may result in the fol-
lowing:
• Gas may leak from a cigarette lighter or spray can, and may
lead to a fire.
• The temperature inside the vehicle may cause the plastic
lenses and plastic material of
glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray
over the interior of the vehicle,
and may also cause a short cir-
cuit in the vehicle’s electrical
components.
●Do not leave cigarette lighters in
the vehicle. If a cigarette lighter
is in a place such as the glove
box or on the floor, it may be lit
accidentally when luggage is
loaded or the se at is adjusted,
causing a fire.
●Do not attach adhesive discs to
the windshield or windows. Do
not place containers such as air
fresheners on the instrument
panel or dashboard. Adhesive
discs or containers may act as
lenses, causing a fire in the
vehicle.
●Do not leave a door or window
open if the curved glass is
coated with a metallized film
such as a silver-colored one.
Reflected sunlight may cause
the glass to act a s a lens, caus-
ing a fire.

3015-1. Before driving
5
Driving
vehicle control. This is espe-
cially true on wet or slippery
surfaces.
 Avoid jerky starts or sudden
acceleration.
 Avoid jerky steering and
sharp turns, and slow down
before making turn.
 Note that when making a turn,
the trailer wheels will be
closer than the vehicle wheels
to the inside of the turn. Com-
pensate by making a wider
than normal turning radius.
 Slow down before making a
turn, in cross winds, on wet or
slippery surfaces, etc.
Increasing vehicle speed can
destabilize the trailer.
Take care when passing other
vehicles. Passing requires
considerable distance. After
passing a vehicle, do not for-
get the length of your trailer,
and be sure you have plenty
of room before changing
lanes.
 To maintain engine braking
efficiency, when using engine
braking, do not use the trans-
mission in D.
 Instability happens more fre-
quently when descending
steep or long downhill grades.
Before descending, slow
down and downshift. Do not
make sudden downshifts
while descending steep or long downhill grades.
 Avoid holding the brake pedal
down too long or applying the
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s hybrid
system may overheat on hot
days (at temperatures over
85°F [30°C]) when driving up
a long or steep grade. If the
high coolant temperature
warning light indicates over-
heating, immediately turn off
the air conditioning (if in use),
pull your vehicle off the road
and stop in a safe spot.
( P.574)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Apply the parking
brake firmly, and put the
transmission in P. Avoid park-
ing on a slope, but if unavoid-
able, do so only after
performing the following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.

5428-2. Steps to take in an emergency
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
■Malfunction indicator lamp
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe
place.
Handling method ( P.574)
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.574)
Warning lightDetails/Actions
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe
place and contact your Toyota dealer.
Warning lightDetails/Actions
(U.S.A.)
(Canada)
Indicates a malfunction in:
 The hybrid system;
 The electronic engi ne control system;
 The electronic throttle control system; or
 The emission control s ystem (if equipped)
 Have the vehicle inspected by your Toyota
dealer immediately.

5548-2. Steps to take in an emergency
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid system stopped”
• “Engine Stopped”
●If “Maintenance required for
DCDC converter cooling parts
See Owner’s Manual” is shown,
the filter may be clogged, the air
intake vent may be blocked, or
there may be a gap in the duct.
Therefore, perform the following
correction procedure.
• If the air intake vent or filter of the DC/DC converter are dirty, per-
form the procedures on P.515 to
clean them.
• If the warning message is shown when the air intake vent and filter
of the DC/DC converter are not
dirty, have the vehicle inspected
at your Toyota dealer.
●If “12-Volt Battery Charging Sys-
tem Malfunction Stop in a Safe
Place See Owner’s Manual” is
shown
Indicates a malfunction in the vehi-
cle’s charging system. Pull over and
stop the vehicle as soon as it is safe
to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially lim ited in order to
reduce the power consumption of
the 12-volt battery.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.574
■If “Traction Battery Needs to be
Protected Refrain from the Use
of N Position” is shown
This message may be displayed
when the shift lever is in N.
As the hybrid battery (traction bat-
tery) cannot be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.
■If “Traction Battery Needs to be
Protected Shift into P to
Restart” is shown
This message is displayed when the
hybrid battery (traction battery)
charge has becom e extremely low
because the shift lever has been left
in N for a certain amount of time.
When operating the vehicle, shift to
P and restart the hybrid system.
■If “Shift to P Before Exiting
Vehicle” is shown
Message is displayed when the
driver’s door is opened without turn-
ing the power switch to OFF with the
shift lever in any p osition other than
P.
Shift the shift lever to P.
■If “Shift is in N Release Acceler-
ator Before Shifting” is shown
Message is displayed when the
accelerator pedal has been
depressed and the shift lever is in N.
Release the accelerator pedal and
shift the shift lever to D or R.
■If “Press brake when vehicle is
stopped Hybrid system may
overheat” is shown
Message is displayed when the
accelerator pedal is depressed to
maintain the vehicl e position when
stopped on a upward slope, etc.
If this continues, the hybrid system
may overheat.
Release the accelerator pedal and
depress the brake pedal.