2021 TOYOTA RAV4 HYBRID radiator cap

5827-3. Do-it-yourself maintenance
Fuse boxes (P.621)
Engine oil filler cap ( P.583)
Engine oil level dipstick ( P.582)
Brake fluid reservoir ( P.586)
Radiator ( P.585)
Electric cooling fan
Condenser ( P.585)
Power control unit coolant reservoir ( P.585)
Washer fluid tank ( P.587)
Engine coolant reservoir ( P.584)
■12-volt battery
 P.588
With the engine at operating
temperature and turned off,
Engine compartment
Components
A
B
C
D
E
F
G
H
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5857-3. Do-it-yourself maintenance
7
Maintenance and care
Reservoir cap
“FULL” line
“LOW” line
I f t he le ve l is on o r be low th e “L O W ”
line, add coolant up to the “FULL”
line. (P.677)
■Power control unit coolant
reservoir
Reservoir cap
“FULL” line
“LOW” line
I f t he le ve l is on o r be low th e “L O W ”
line, add coolant up to the “FULL”
line. ( P.678)
■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

6788-2. Steps to take in an emergency
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be us ed 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.
6 After 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 dropped and the vehicle may be
driven normally.
However, if the message appears
again frequently, contact your
Toyota dealer.
A
B
C
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.

Alphabetical Index745
By contacts list ..................... 485
By favorites list ..................... 485
By home screen ................... 487
By keypad ............................ 486
Power back door switch 137, 138
Power outlets .......................... 546
Power steering (Electric Power Steering system) .................. 370Warning light ........................ 644
Power switch .................. 210, 212 Auto power off function ........ 216
Changing the power switch modes ........................ 211, 216
Starting the hybrid system ................................... 210, 212
POWER VOLUME knob .......... 433
Power windows Door lock linked window opera-tion ..................................... 177
Jam protection function ........ 176
Operation ............................. 176
Window lock switch .............. 178
Pre-Collision System (PCS)
Enabling/disabling the pre-colli-sion system ........................ 252
Function ............................... 250
Warning light ........................ 645
Warning message ........ 248, 656
Projection button (Menu screen) ............................................... 389
R
Radar cruise control Dynamic radar cruise control with full-speed range .......... 271
Radiator ................................... 585
Radio ....................................... 437
RCTA (Rear Cross Traffic Alert) RCTA Function............. 282, 288
Warning message ................ 284
Rear Cross Traffic Alert (RCTA) ............................................... 282 Rear passengers’ seat belt
reminder light........................650
Rear seat Folding down the rear seatbacks...........................................155
Head restraints .....................159
Rear side marker lights Light switch...........................229
Replacing light bulbs ............624
Rear turn signal lights Replacing light bulbs ............624
Turn signal lever . ..................223
Wattage ................................692
Rear view mirror Digital Rear-view Mirror ........165
Inside rear view mirror ..........163
Outside rear view mirrors .....174
Rear view monitor system .....313 Driving precautions ...............313
Rear view monitor system pre-cautions ..............................315
Screen description................314
Things you should know .......319
Rear window defogger ...........526
Rear window wiper .................239
Receiving a call using the
Bluetooth
® hands-free system
...............................................487
Refueling ............ .....................241
Capacity ...............................685
Fuel types .....................685, 694
If the fuel filler door cannot be opened ...............................669
Opening the fuel tank cap ....242
Regenerative braking ...............73
Registering/Connecting a
Bluetooth
® device ................402
Profiles .................................405
Registering a Bluetooth
® audio
player for the first time ........404
Registering a Bluetooth
® phone