2021 TOYOTA RAV4 HYBRID cooling

6758-2. Steps to take in an emergency
8
When trouble arises
WARNING
●Do not smoke, use matches,
cigarette lighters or allow open
flame near the 12-volt battery.
■12-volt battery precautions
The 12-volt battery contains poi-
sonous and corrosi ve acidic elec-
trolyte, while related parts contain
lead and lead compounds.
Observe the following precautions
when handling the 12-volt battery:
●When working with the 12-volt
battery, always wear safety
glasses and take care not to
allow any battery fluids (acid) to
come into contact with skin,
clothing or the vehicle body.
●Do not lean over the 12-volt bat-
tery.
●In the event that battery fluid
comes into contact with the skin
or eyes, immediately wash the
affected area with water and
seek medical attention.
Place a wet sponge or cloth
over the affected area until
medical attention can be
received.
●Always wash your hands after
handling the 12-volt battery sup-
port, terminals, and other bat-
tery-related parts.
●Do not allow child ren near the
12-volt battery.
■After recharging the 12-volt
battery
Have the 12-volt battery
inspected at your Toyota dealer
as soon as possible.
If the 12-volt battery is deteriorat-
ing, continued use may cause the
12-volt battery to emit a malodor-
ous gas, which may be detrimen-
tal to the health of passengers.
■When replacing the 12-volt
battery
●For information regarding 12-
volt battery rep lacement, con-
tact your Toyota dealer.
●After replacing, s ecurely attach
the exhaust hose and exhaust
hole plug to the exhaust hole of
the replaced 12-volt battery. If
not properly installed, gases
(hydrogen) may leak into the
vehicle interior, and there is the
possible danger of the gas ignit-
ing and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan, etc.
■To prevent damaging the
vehicle
The exclusive jump starting termi-
nal is to be used when charging
the 12-volt battery from another
vehicle in an emergency. It cannot
be used to jump start another
vehicle.

6768-2. Steps to take in an emergency
■If the engine coolant tem-
perature gauge enters the
red zone or “Engine Cool-
ant Temp High Stop in a
Safe Place See Owner’s
Manual” is shown on the
multi-information display
1 Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the hybrid system. 2
If you see steam:
Carefully lift the hood after
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
If your vehicle over-
heats
The following may indicate
that your vehicle is over-
heating.
The needle of the engine
coolant temperature gauge
( P.94, 98) enters the red
zone, or a loss of hybrid
system power is experi-
enced. (For example, the
vehicle speed does not
increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown
on the multi-information dis-
play.
 Steam comes out from
under the hood.
Correction procedures
A
B
A
B

6778-2. Steps to take in an emergency
8
When trouble arises
“LOW” line
5 Add coolant if necessary.
Water can be us ed 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.
6 Start 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 op erating by check-
ing the fan sound and air flow. If it is
difficult to check th ese, turn the air
conditioning system on and off
repeatedly. (The f an may not oper-
ate 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
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
C
A
B

6798-2. Steps to take in an emergency
8
When trouble arises
1Stop the hybrid system. Set
the parking brake and shift
the shift lever to P.
2 Remove the mud, snow or
sand from around the stuck
tire.
3 Place wood, stones or some
other material to help provide
traction under the tires.
4 Restart the hybrid system
5 Shift the shift lever to D or R
and release the parking
brake. Then, while exercising
caution, depress the acceler-
ator pedal.
■When it is difficult to free the
vehicle
Press to turn off TRAC.
(  P.370)
NOTICE
■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.
If the vehicle becomes
stuck
Carry out the following pro-
cedures if the tires spin or
the vehicle becomes stuck
in mud, dirt or snow:
Recovering procedure

6889-1. Specifications
*: The coolant capacity is the quantity of reference.
If replacement is ne cessary, contact your Toyota dealer.
Cooling system
Capacity*Gasoline engine7.1 qt. (6.7 L, 5.9 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.
Ignition system (spark plug)
MakeDENSO FC16HR-Q8
Gap0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system (12-volt Battery)
Specific voltage reading at
68°F (20°C):
12.0 V or higher
(Turn the power switch to OFF and turn on
the high beam headlights for 30 seconds.)
If the voltage is lower than the standard
value, charge the battery.
Charging ratesQuick charge15 A max.
Slow charge5 A max.

Alphabetical Index737
Brightness controlInstrument panel light control..................................... 96, 102
BSM (Blind Spot Monitor) ...... 282 Blind Spot Monitor function .. 286
Rear Cross Traffic Alert function........................................... 288
C
Care Aluminum wheels ................. 566
Exterior ................................. 566
Interior .................................. 569
Seat belts ............................. 569
Cargo capacity ............... 196, 199
Cargo hooks ........................... 541
Chains ..................................... 380
Child-protectors ..................... 132
Child restraint s ystem ............. 52
Fixed with a LATCH system ... 61
Fixed with a seat belt ............. 56
Front passenger occupant clas- sification system ................... 45
Points to remember ................ 52
Riding with children ................ 51
Types of child restraint system installation met hod ............... 54
Using an anchor bracket ........ 63
Child safety ............................... 51 12-volt battery precautions................................... 588, 676
Airbag precautions ................. 40
Back door precautions ......... 133
Child restraint system............. 54
Heated steering wheel and seat
heater precautions ............. 531
How your child should wear the seat belt................................ 32
Moon roof precau tions ......... 180
Panoramic moon roof precau- tions.................................... 184
Power window lock switch.... 178 Power window precautions...177
Rear door child-protectors ....132
Removed key battery precau-
tions ....................................620
Seat belt extender precautions .............................................32
Seat belt precautions..............31
Seat heater precautions .......531
Cleaning ..........................566, 569 Aluminum wheels .................566
Exterior .................................566
Interior ..................................569
Radar sensor ........................245
Seat belts .............................569
Clock ..................................97, 102
Coat hooks ..............................557
Command list ..........................473
Condenser ............. ..................585
Connected Service s ...............509
Console box ............................538
Consumption screen ..............113
Coolant Checking ..............................584
Preparing and checking before winter ..................................378
Warning light ........................643
Cooling system .......................584 Hybrid system overheating ...677
Cruise control Dynamic radar cruise control with full-speed range ..........271
Cup holders.............................538
Current fuel consumption......115
Current fuel economy ............105
Curtain shield airbags ..............35
Customizable featu res ...........706
D
Daytime running light system230
Replacing light bulbs ............624
DCM .................510, 512, 513, 516
Deck board ..............................541