2022 TOYOTA RAV4 PLUG-IN HYBRID radiator cap

455
7 7-3. Do-it-yourself maintenance
Maintenance and care
Fuse boxes (P.488)
Engine oil filler cap (P.456)
Engine oil level dipstick (P.455)
Radiator (P.458)
Electric cooling fan
Condenser (P.458)
Power control unit coolant reservoir (P.458)
Washer fluid tank (P.459)
Engine coolant reservoir (P.457)
Q12-volt battery
P.460
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

4587-3. Do-it-yourself maintenance
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( P.551)
QPower 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.553)
QCoolant selection
Only use “Toyota Super Long Life Coo- lant” 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.“Toyota Super Long Life Coolant” is a
mixture of 50% coolant and 50% deion- ized water. (Minimum temperature: -35°C [-31°F])
For more details about coolant, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
QIf 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 retailer 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
QWhen 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
QWhen 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 antifreeze or coolant
label.
QIf you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or
paint.
Checking the radiator and
condenser

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.

596Alphabetical Index
Personal lights .............................. 420
Switch ........................................ 420
PKSB (Parking Support Brake) ... 379
Indicator ..................................... 169
Parking Support Brake function
(rear-crossing vehicles) ........... 386
Parking Support Brake function
(static objects) ......................... 383
Warning light .............................. 512
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 ............................ 134
HV mode ...................................... 85
Hybrid battery (traction battery)
charge mode .............................. 85
Power back door switch ...... 211, 212
Power control unit coolant .......... 457
Capacity ..................................... 562
Checking .................................... 458
Preparing and checking before win-
ter ............................................ 398
Radiator ..................................... 458
Power outlets ................................ 430
Power sources .............................. 123
Power steering (Electric Power
Steering system) ........................ 392
Warning light .............................. 510
Power switch ................................ 273
Auto power off function .............. 276
Changing the power switch modes
................................................. 276
If your vehicle has to be stopped in
an emergency .......................... 500
Starting the hybrid system ......... 273
Power windowsCatch protection function ........... 247
Door lock linked window operation
................................................. 248
Jam protection function .............. 247
Operation ...................................247
Window lock switch .................... 249
Pre-Collision System (PCS)
Enabling/disabling the pre-collision
system...................................... 313
Function ..................................... 311
Warning light .............................. 511
Warning message .............. 309, 521
R
Radar cruise control
Dynamic radar cruise control with
full-speed range .......................332
Radiator ......................................... 458
RCTA (Rear Crossing Traffic Alert)
RCTA Function................... 349, 367
Warning message ...................... 350
Rear Crossing Traffic Alert (RCTA)
..................................................... 349
Rear fog light
Replacing light bulbs ..................491
Switch......................................... 293
Rear passengers’ seat belt reminder
light ..............................................516
Rear seat........................................227
Folding down the rear seatbacks228
Head restraints ........................... 232
Seat heaters ............................... 417
Rear turn signal lights
Replacing light bulbs ..................491
Turn signal lever......................... 281
Wattage ...................................... 565
Rear view mirror
Digital Rear-view Mirror.............. 236
Inside rear view mirror................ 235
Outside rear view mirrors ........... 245
Rear window defogger ................. 408