radiator cap TOYOTA RAV4 PRIME 2022 Owners Manual

4567-3. Do-it-yourself maintenance
Fuse boxes (P.489)
Engine oil filler cap ( P.457)
Engine oil level dipstick ( P.456)
Brake fluid reservoir ( P.460)
Radiator ( P.459)
Electric cooling fan
Condenser ( P.459)
Power control unit coolant reservoir ( P.459)
Washer fluid tank ( P.461)
Engine coolant reservoir ( P.458)
■12-volt battery
 P.462
With the engine at operating
temperature and turned off,
Engine compartment
Components
A
B
C
D
E
F
G
H
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4597-3. Do-it-yourself maintenance
7
Maintenance and care
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. (P.539)
■Power control unit coolant
reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( P.541)
■Coolant selection
Only use “Toyota Super Long Life
Coolant” or a similar high quality
ethylene glycol based non-silicate,
non-amine, non-nitrite, and non-
borate coolant with long-life hybrid
organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is
a mixture of 50% coolant and 50%
deionized water. (Minimum tem-
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is
a mixture of 55% coolant and 45%
deionized water. (Minimum tem-
perature: -44°F [-42°C])
For more details about coolant, con-
tact your To yota dealer.
■If the coolant level drops within
a short time of replenishing
Visually check the radiators, hoses,
engine/power control unit coolant
reservoir caps, drain cock and water
pump.
If you cannot find a leak, have your
Toyota dealer, test the cap and
check for leaks in the cooling sys-
tem.
Check the radiator and con-
denser, and clear away any for-
eign objects.
If either of the above parts is
extremely dirty or you are not
sure of their condition, have
A
B
C
A
B
C
WARNING
■When the hybrid system is
hot
Do not remove the engine/power
control unit coolant reservoir
caps.
The cooling system may be under
pressure and may spray hot cool-
ant if the cap is removed, causing
serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct
mixture of water and antifreeze
must be used to provide proper
lubrication, corrosion protection
and cooling. Be sure to read the
antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to
prevent it from damaging parts or
paint.
Checking the radiator and
condenser

4607-3. Do-it-yourself maintenance
your vehicle inspected by your
Toyota dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
■Adding fluid
1 Slide and lift up the rubber
strip to partly remove it as
shown.
2 Disconnect the claws and
remove the service cover.
3 Remove the reservoir cap.
4 Add brake fluid slowly while
checking the fluid level.
Make sure to check the fluid
type and prepare the necessary
item.
WARNING
■When the hybrid system is
hot
Do not touch the r adiator or con-
denser as they may be hot and
cause serious injuries, such as
burns.
■When the electric cooling fan
is operating
Do not touch the engine compart-
ment.
With the power switch in ON, the
electric cooling fan may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. Be sure the
power switch is OFF when work-
ing near the electric cooling fan or
radiator grille.
Checking and adding the
brake fluid

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.

606Alphabetical Index
gers .................................... 392
Outside temperature display . 168
Overheating ............................ 539
P
Paddle shift switches ............. 284
Panic mode ............................. 196
Panoramic moon roof Jam protection function ........ 251
Operation ............................. 250
Warning message ................ 252
Parking assist sensors (intuitive parking assist) ...................... 355
Parking brake Operation ............................. 287
Parking brake engaged warning buzzer ................................ 289
Warning light ........................ 512
Warning message ................ 289
Parking lights Light switch .......................... 293
Replacing light bulbs ............ 492
Parking Support Brake (PKSB) ............................................... 363Indicator ............................... 163
Parking Support Brake function (rear-crossing vehicles) ...... 371
Parking Support Brake function (static objects) .................... 368
Warning light ........................ 510
Warning message ................ 367
PCS (Pre-Collision System) Enabling/disabling the pre-colli-sion system ........................ 315
Function ............................... 313
Warning light ........................ 509
Warning message ........ 311, 521
Personal lights ....................... 405 Switch................................... 405
PKSB (Parking Support Brake) ............................................... 363Indicator ............................... 163 Parking Support Brake function
(rear-crossing vehicles) ......371
Parking Support Brake function (static objects) ....................368
Warning light ........................510
Warning message . ...............367
Plug-in hybrid system ..............76 AUTO EV/HV mode switch .....78
AUTO EV/HV mode ................77
Driving tips..............................92
EV driving range .....................95
EV mode.................................77
EV/HV mode selection switch 78
Features .................................76
How to charge ......................123
HV mode ................................77
Hybrid battery (tr action battery)
charge mode ........................77
Power back door switch ........207
Power control unit coolant ....458 Capacity ...............................549
Checking ..............................459
Preparing and checking before winter ..................................382
Radiator ................................459
Power outlets Power outlet (12 V DC) .........414
Power outlet (AC 120 V/1500 W) ...........................................424
Power sources ........................111
Power steering (Electric Power Steering system)...................376Warning light ........................508
Power switch...........................277 Auto power off fun ction.........281
Changing the power switch modes.................................280
If your vehicle has to be stopped in an emergency .................499
Starting the hybrid system ....277
Power windows Catch protection function......244

Alphabetical Index607
Door lock linked window opera-tion ..................................... 245
Jam protection function ........ 244
Operation ............................. 244
Window lock switch .............. 246
Pre-Collision System (PCS) Enabling/disabling the pre-colli-sion system ........................ 315
Function ............................... 313
Warning light ........................ 509
Warning message ........ 311, 521
Predictive efficient drive .......... 85
R
Radar cruise control Dynamic radar cruise control with full-speed range .......... 334
Radiator ................................... 459
RCTA (Rear Cross Traffic Alert) RCTA Function............. 345, 351
Warning message ................ 347
Rear Cross Traffic Alert (RCTA) ............................................... 345
Rear passengers’ seat belt reminder light ....................... 514
Rear seat ................................. 223 Folding down the rear seatbacks........................................... 224
Head restraints ..................... 228
Seat heaters ......................... 402
Rear side marker lights Light switch .......................... 293
Replacing light bulbs ............ 492
Rear turn signal lights Replacing light bulbs ............ 492
Turn signal lever................... 286
Wattage ................................ 552
Rear view mirror Digital Rear-view Mirror........ 232
Inside rear view mirror.......... 231
Outside rear view mirrors ..... 242
Rear window defogger ........... 392 Rear window wiper .................302
Refueling ............
.....................304
Capacity ...............................547
Fuel types .....................547, 553
If the fuel filler door cannot be opened ...............................531
Opening the fuel tank cap ....305
Regenerative braking ...............82
Remote Air Conditioning System ...............................................399
Replacing Electronic key battery ...........487
Fuses....................................489
Light bulbs ............................492
Tires .....................................522
Wiper insert ..........................483
Reporting safety defects for Canadian owners ..................581
Reporting safety defects for U.S. owners ...................................580
Resetting the message indicat- ing maintenance is required 447
Road accident cautions ...........89
Road Sign Assist ....................331
RSA (Road Sign Assist) .........331
S
Safety Connect .........................65
Seat belt reminder light..513, 514
Seat belts...................................29 Adjusting the seat belt shoulder anchor height........................31
Automatic Locking Retractor (ALR) ....................................31
Child restraint sys tem installation
.............................................55
Cleaning and maintaining the seat belt ..............................443
Emergency Locking Retractor (ELR) ....................................31
How to wear your seat belt .....30
How your child should wear the