2021 TOYOTA RAV4 PHEV radiator cap

501
7
7-3. Do-it-yours elf maintenance
Maintenance and care
Fuse boxes (→P.545)
Engine oil filler cap ( →P.502)
Engine oil level dipstick ( →P.501)
Radiator ( →P.504)
Electric cooling fan
Condenser ( →P.504)
Power control unit coolant reservoir ( →P.504)
Washer fluid tank ( →P.505)
Engine coolant reservoir ( →P.503)
■12-volt battery
→ P.506
With the engine at operating tem-
perature and turned off, check the
Engine compartment
Components
A
B
C
D
E
F
G
H
I
Checking and adding the
engine oil

5047-3. Do-it-yourself maintenance
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( →P.611)
■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.613)
■Coolant selection
Only use “Toyota Super Long Life Coo - lant” or a similar hig h quality ethylene
glycol based non-si licate, non-amine,
non-nitrite, and non- borate coolant with long-life hybrid org anic acid technology.
“Toyota Super Long Life Coolant” is a
mixture of 50% coolant and 50% deion - ized water. (Minimu m temperature: -
35°C [-31°F])
For more details about coolant, contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses,
engine/power control unit coolant reser - voir caps, drain cock and water pump.
If you cannot find a leak, have any
authorized Toyota r etailer or Toyota
authorized repairer, or any reliable repairer, test the cap and check for
leaks in the cooling system.
Check the radiator and condenser,
and clear away any foreign objects.
If either of the above parts is
extremely dirty or you are not sure
of their condition, have your vehicle
inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
C
A
B
C
WARNING
■When the hybrid system is hot
Do not remove the engine/power con -
trol unit coolant reservoir caps.
The cooling system may be under
pressure and may spray hot coolant 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 mix - ture of water and antifreeze must be
used to provide proper lubrication,
corrosion protection and cooling. Be sure to read the anti freeze 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

6148-2. Steps to take in an emergency
mation display.
If the message does not disap -
pear: Stop the hybrid system
and contact any authorized
Toyota retailer or Toyota autho -
rized repairer, or any reliable
repairer.
If the message is no t 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
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If 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.
●After 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 rotatin g parts such as
the fan, which may lead to fingers
or clothing (especia lly a tie, a scarf or a muffler) getting caught, result -
ing in serious injury.
●Do not loosen the c oolant reservoir
cap while t he hybrid system and
radiator are hot. High temperature steam or coolant
could spray out.
NOTICE
■When 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.
■To prevent damage to the cool -
ing system
Observe the following precautions:
●Avoid contaminating the coolant
with foreign matter (such as sand or dust, etc.).
●Do not use any coolant additive.

658Alphabetical Index
Warning light .............................. 571
Warning message .............. 353, 581
Personal lights.............................. 466
Switch ........................................ 466
Wattage...................................... 626
PKSB (Parking Supp ort Brake) ... 420
Indicator ..................................... 171
Parking Support Brake function
(rear-crossing vehicles) ........... 430
Parking Support Brake function
(static objects) ......................... 424
Warning light .............................. 572
Plug-in hybrid system .................... 84
AUTO EV/HV mode switch .......... 86
AUTO EV/HV mode ..................... 85
Driving tips ................................... 99
EV driving range ..... ................... 102
EV mode ...................................... 85
EV/HV mode selection switch ...... 86
Features ....................................... 84
How to charge ............................ 135
HV mode ...................................... 85
Hybrid battery (traction battery)
charge mode.............................. 85
Power back door switch .............. 214
Power control unit coolant .......... 503
Capacity ................ ..................... 622
Checking .................................... 504
Preparing and c hecking before win-
ter ............................................ 445
Radiator ..................................... 504
Power outlets ................................ 476
Power sources .............................. 124
Power steering (E lectric Power
Steering system) ........................ 438
Warning light .............................. 570
Power switch ................................ 317
Auto power off function .............. 320
Changing the powe r switch modes
................................................. 320
If your vehicle has to be stopped in
an emergency ..........................560
Starting the hybrid system..........317
Power windows
Catch protection function ........... 291
Door lock linked window operation
.................................................292
Jam protection function .............. 291
Operation ...................................291
Window lock switch .................... 293
Pre-Collision System (PCS)
Enabling/disabling the pre-collision
system......................................357
Function .....................................355
Warning light ..............................571
Warning message .............. 353, 581
R
Radar cruise control
Dynamic radar cruise control with
full-speed range .......................376
Radiator .........................................504
RCTA (Rear Crossing Traffic Alert)
RCTA Function...................393, 411
Warning message ...................... 394
Rear Crossing Traffic Alert (RCTA)
..................................................... 393
Rear fog light
Replacing light bulbs ..................548
Switch.........................................337
Rear passengers’ seat belt reminder
light ..............................................576
Rear seat........................................271
Folding down the rear seatbacks272
Head restraints ...........................276
Seat heaters ............................... 463
Rear turn signal lights
Replacing light bulbs ..................548
Turn signal lever......................... 325
Wattage ......................................626
Rear view mirror
Digital Rear-view Mirror.............. 280