2022 TOYOTA RAV4 PLUG-IN HYBRID cooling

5548-2. Steps to take in an emergency
again and check the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer. If the message is not displayed: The hybrid system temperature has
dropped and the vehicle may be driven normally. However, if the message appears again
frequently, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
QWhen inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
OIf steam is seen coming from under
the hood, do not open the hood until the steam has subsided. The engine compartment may be very
hot.
OAfter the hybrid system has been
turned off, check that the “READY” indicator is off.When the hybrid system is operat-
ing, the gasoline engine may auto- matically start, or the cooling 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, result-ing in serious injury.
ODo not loosen the coolant reservoir cap while the hybrid system and
radiator are hot. High temperature steam or coolant could spray out.
NOTICE
QWhen adding engine/power con-trol 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 dam- age to the hybrid system.
QTo prevent damage to the cool-ing system
Observe the following precautions:
OAvoid contaminating the coolant with foreign matter (such as sand or dust, etc.).
ODo not use any coolant additive.

5629-1. Specifications
Temperature range anticipated
before next oil change
Preferred
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 tempera-
ture. An oil with a higher viscos-
ity (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 labels:
Either or both API registered marks
are added to some oil containers to
help you select the oil you should use.
API Service Symbol
Top portion: “API SERVICE SP” means
the oil quality designation by American
Petroleum Institute (API).
Center portion: “SAE 0W-16” means
the SAE viscosity grade.
Lower portion: “Resource-Conserving”
means that the oil has fuel-saving and
environmental protection capabilities.
ILSAC Certification Mark
The International Lubricant Specifica-
tion Advisory Committee (ILSAC) Certi-
fication Mark is displayed on the front of
the container.
A
B
A
B
Cooling system
Capacity*
Gasoline
engine7.4 L (7.8 qt., 6.5 Imp. qt.)
Power con-
trol unit2.0 L (2.1 qt., 1.8 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.

589Alphabetical Index
When charging cannot be carried
out ............................................ 155
Charging port ................................ 105
If the charging port lid does not open
................................................. 120
Locking and unlocking ............... 120
Opening and closing .................. 106
Child-protector.............................. 207
Child restraint system .................... 50
Child restraint system installation
method....................................... 59
Fixed with a seat belt ................... 60
Fixed with an ISOFIX lower anchor-
age ............................................. 62
Points to remember...................... 51
Riding with children ...................... 49
Using a top tether anchorage....... 63
Child safety ..................................... 49
12-volt battery precautions. 461, 550
Airbag precautions ....................... 44
Back door precautions ............... 208
Charging precautions ................. 132
Heated steering wheel and seat
heater precautions ................... 416
How your child should wear the seat
belt ............................................. 36
Panoramic moon roof precautions
................................................. 252
Power window lock switch ......... 249
Power window precautions ........ 248
Rear door child-protectors ......... 207
Seat belt precautions ................... 35
Seat heater precautions ............. 416
Cleaning ................................ 442, 445
Aluminum wheels ....................... 442
DC/DC Converter air intake vent 479
Exterior....................................... 442
Front camera.............................. 301
Interior ........................................ 445
Radar sensor ............................. 301
Seat belts ................................... 445Water-repellent coating .............. 443
Clock ..............................................177
Coat hooks .................................... 439
Condenser ..................................... 458
Console box .................................. 423
Consumption screen .................... 193
Convenience Services (Suggestion
function) ...................................... 187
Coolant
Capacity ..................................... 562
Checking .................................... 457
Preparing and checking before win-
ter ............................................. 398
Warning light .............................. 509
Cooling system .............................457
Engine overheating .................... 551
Hybrid system overheating......... 553
Cruise control
Cruise control .............................344
Dynamic radar cruise control with
full-speed range .......................332
Cup holders ...................................424
Current fuel consumption ............196
Current fuel economy................... 179
Curtain shield airbags ....................39
Customizable features ................. 569
D
Daytime running light system ..... 288
Replacing light bulbs ..................491
DC/DC converter air intake vent .... 98
Cleaning ..................................... 479
Deck board .................................... 426
Deck under tray.............................427
Defogger
Outside rear view mirrors ........... 408
Rear window .............................. 408
Windshield.................................. 407
Digital Rear-view Mirror ............... 236
Dimensions ...................................558
Display