2022 TOYOTA RAV4 PRIME coolant temperature

5078-2. Steps to take in an emergency
8
When trouble arises
■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*
*: This light illuminat es on the multi-information display.
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe
place.
Handling method ( P.539)
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.539)
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.

5408-2. Steps to take in an emergency
the steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line 5
Add coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
6Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fan operates and
to check for coolant leaks
from the radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check these, adjust the
temperature control switch to “LO”
and turn the “A/C” switch ON and
OFF. After this, turn the air condi-
tioning system on and off repeat-
edly. (The fan may not operate in
freezing temperatures.)
7 If the fan is not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
8 Check if “Engine Coolant
Temp High Stop in a Safe
A
B
A
B
C

5418-2. Steps to take in an emergency
8
When trouble arises
Place See Owner’s Manual”
is shown on the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Toyota dealer.
■If “Hybrid System Over-
heated Output Power
Reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe
place.
2 Stop the hybrid system and
carefully lift the hood.
3 After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the “FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emer-
gency if power control unit coolant
is unavailable.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
6After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check for the
multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has
A
B
A
B
C

5428-2. Steps to take in an emergency
dropped and the vehicle may be
driven normally.
However, if the message appears
again frequently, contact your
Toyota dealer.
WARNING
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions.
Failure to do so may result in seri-
ous injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.
●After the hybrid system has
been turned off, check that the
“READY” indicator is off.
When the hybrid system is oper-
ating, the gasoline engine may
automatically start, or the cool-
ing fan may suddenly operate
even if the gasoline engine
stops. Do not touch or approach
rotating parts such as the fan,
which may lead to fingers or
clothing (especially a tie, a scarf
or a muffler) getting caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir cap while the hybrid system
and radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine/power
control unit coolant
Add coolant slowly after the
hybrid system has cooled down
sufficiently. Adding cool coolant to
a hot hybrid system too quickly
can cause damage to the hybrid
system.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust, etc.).
●Do not use any coolant additive.

5499-1. Specifications
9
Vehicle specifications
SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.Outside temperature
Oil viscosity (0W-16 is explained
here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil
which allows cold startability. Oils with a lower value before
the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the
oil when the oil is at high tem-
perature. An oil with a higher
viscosity (one with a higher
value) may be better suited if
the vehicle is operated at high
speeds, or under extreme
load conditions.
How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
*: The coolant capacity is the quantity of reference.
A
Cooling system
Capacity*Gasoline engine8.7 qt. (8.2 L, 7.2 Imp. qt.)
Power control unit2.1 qt. (2.0 L, 1.8 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene gly-
col-based non-silicate, non-amine,
non-nitrite, and non-borate cool-
ant with long-life hybrid organic
acid technology
Do not use plain water alone.

5599-1. Specifications
9
Vehicle specifications
■Temperature A, B, C
The temperature grades are A
(the highest), B, and C, repre-
senting the tire’s resistance to
the generation of heat and its
ability to dissipate heat when
tested under controlled condi-
tions on a specified indoor labo-
ratory test wheel.
Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure.
Grade C corresponds to a level of performance which all passenger
car tires must meet under the Fed-
eral Motor Vehicle Safety Standard
No. 109.
Grades B and A represent higher
levels of performance on the labo-
ratory test wheel than the minimum
required by law.
Warning: The temperature grades
of a tire assume tha
t it is properly
inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either sepa-
rately or in combination, can cause
heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked
for three hours or more, or has not been driven
more than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of transmis-
sion, power steering, power brakes, power
windows, power seats, radio and heater, to the
extent that these items are available as factory-
installed equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including th e maximum capacity of
fuel, oil and coolant, and if so equipped, air con-
ditioning and additional weight optional engine

Alphabetical Index601
EDR (Event data recorder)......... 8
E-Four (Electronic On-Demand AWD system) ........................ 376
Elapsed time ........................... 176
Electric motor Location.................................. 76
Specification ......................... 548
Electric Power Steering (EPS) Function ............................... 376
Warning light ........................ 508
Electronically Controlled Brake System (ECB) ....................... 375
Electronic key Battery-saving function......... 218
If the electronic key does not operate properly ................. 532
Replacing the battery ........... 487
Electronic sunshade .............. 250 Jam protection function ........ 251
Operation ............................. 250
Emergency, in case of If a warning buzzer sounds .. 506
If a warning light turns on ..... 506
If a warning message is dis-played................................. 518
If the 12-volt battery is dis- charged .............................. 534
If the electronic key does not operate properly ................. 532
If the fuel filler door cannot be opened ............................... 531
If the hybrid sy stem will not start
........................................... 529
If the vehicle is submerged or water on the road is rising .. 500
If you have a flat tire ............. 522
If you lose your keys ............ 531
If you think something is wrong ........................................... 504
If your vehicle becomes stuck ........................................... 543
If your vehicle has to be stopped in an emergency .................499
If your vehicle needs to be towed ...........................................502
If your vehicle ove rheats ......539
Emergency flashers ...............498
Energy monitor .......................187
Engine Compartment........................456
Exhaust gas precautions ........49
Hood .....................................453
How to start the hybrid system...........................................277
Identification number ............547
If the hybrid sys tem will not start
...........................................529
If your vehicle has to be stopped in an emergency .................499
Overheating ..........................539
Power switch ........................277
Engine coolant Capacity ...............................549
Checking ..............................458
High coolant temperature warn-ing light ...............................507
Preparing and checking before winter ..................................382
Warning light ........................507
Engine oil Capacity ...............................548
Checking ..............................456
Preparing and checking before winter ..................................382
Warning light ........................507
Enhanced Vehicle Stability Con- trol (Enhanced VSC ) .............376
Enhanced VSC (Enhanced Vehi- cle Stability Control).............376
EPS (Electric Po wer Steering)
Function................................376
Warning light ........................508
EV/HV mode selection switch .78
EV driving range .......................95

602Alphabetical Index
Event data recorder (EDR)......... 8
EV mode .................................... 77
Exhaust gas precautions ......... 44
F
Flat tire .................................... 522Tire pressure warning system........................................... 467
Floor mats ................................. 26
Fluid Brake ............................ 460, 551
Hybrid transmission.............. 550
Rear differential .................... 550
Washer ................................. 461
Footwell lights ..... ................... 404
Front passenger’s seat belt reminder light ....................... 513
Front passenger occupant clas- sification system .................... 44
Front seat concentrated airflow mode (S-FLOW) .................... 396
Front seat heaters .................. 401
Front seats .............................. 222 Adjustment ........................... 222
Cleaning ............................... 443
Correct driving posture ........... 27
Driving position memory....... 225
Head restraints ..................... 228
Memory recall function ......... 226
Seat heaters ......................... 401
Seat position memory .......... 225
Seat ventilators .................... 401
Front side marker lights ........ 293 Light switch .......................... 293
Replacing light bulbs ............ 492
Front turn signal lights Replacing light bulbs ............ 492
Turn signal lever................... 286
Fuel Capacity ............................... 547
Fuel gauge ........................... 165
Gas station information ........ 624 Information .........
..................553
Refueling ..............................304
Type .............................547, 553
Warning light ........................513
Fuel consumption information Average fuel consumption ....189
Current fuel consumption .....189
Fuel filler door.........................305 If the fuel filler door cannot be opened ...............................531
Opener .................................305
Refueling ..............................304
Fuses .......................................489
G
Garage door opene r ...............432
Gas station information .........624
Glove box ................................408
H
Headlights ...............................293 Automatic High Beam (AHB) 296
Light switch...........................293
Replacing light bulbs ............492
Headlights aim ........................491 Headlight aim instructions for Canadian owners ...............590
Head restraints .......................228
Head-up display ......................182
Heated steering wheel............401
Heaters Automatic air conditioning sys-tem .....................................390
Heated steering wheel..........401
Hybrid battery (tr action battery)
...........................................115
Outside rear view mirrors .....392
Seat heaters ....... ..................401
High coolant temperature warn- ing light..................................507
High mounted stoplight