2022 TOYOTA RAV4 PLUG-IN HYBRID coolant level

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

459
7
7-3. Do-it-yourself maintenance
Maintenance and care
Without level gauge
Type A: If any washer does not
work, the washer tank may be
empty. Add washer fluid.
Type B: If any washer does not
work or the warning message
appears on the multi-information
display, the washer tank may be
empty. Add washer fluid.
With level gauge
If the washer fluid level is at “LOW”,
add washer fluid.
QUsing the gauge (if equipped)
The washer fluid level can be checked
by observing the position of the level on the liquid-covered holes in the gauge.
If the level falls below the second hole
from the bottom (the “LOW” position), refill the washer fluid.
Current fluid level
WARNING
QWhen the hybrid system is hot
Do not touch the radiator or con-
denser as they may be hot and cause serious injuries, such as burns.
QWhen the electric cooling fan is operating
Do not touch the engine compart-
ment.
With the power switch in ON, the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high. Be sure the power switch is off
when working near the electric cool- ing fan or radiator grille.
Checking and adding the
washer fluid
WARNING
QWhen adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the hybrid system, etc.
A

5528-2. Steps to take in an emergency
3After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immediately contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
engine coolant is unavailable. If water was added in an emergency,
have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer as soon as possible.
6 Start the hybrid system and turn
the air conditioning system on to
check that the radiator cooling
fan operates and to check for
coolant leaks from the radiator
or hoses.
The fan operates when the air condi- tioning system is turned on immediately
after a cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it is difficult to check
these, adjust the temperature control switch to “LO” and turn the “A/C” switch ON and OFF. After this, turn the air
conditioning system on and off repeat- edly. (The fan may not operate in freez-ing temperatures.)
7 If the fan is not operating:
Stop the hybrid system immedi-
ately and contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer.
If the fan is operating:
Have the vehicle inspected at
the nearest authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
A
B
A
B
C

553
8
8-2. Steps to take in an emergency
When trouble arises
8 Check if “Engine Coolant Temp
High Stop in a Safe Place See
Owner’s Manual” is shown on
the multi-information display.
If the message does not disap-
pear:
Stop the hybrid system and con-
tact any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
If the message is not displayed:
Have the vehicle inspected at
the nearest authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
QIf “Hybrid System Overheated
Output Power Reduced” is
shown on the multi-informa-
tion 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 (radiator) for
any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if power control unit coolant is unavail-able.
If water was added in an emergency, have the vehicle inspected at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as soon as possible.
6 After stopping the hybrid system
and waiting for 5 minutes or
more, start the hybrid system
A
B
A
B
C

592Alphabetical Index
Replacing light bulbs .................. 491
Switch ........................................ 293
Front passenger’s seat belt reminder
light.............................................. 515
Front position lights
Light switch ................................ 288
Replacing light bulbs .................. 491
Front seat concentrated airflow
mode (S-FLOW) .......................... 411
Front seat heaters ........................ 416
Front seats .................................... 226
Adjustment ................................. 226
Cleaning ..................................... 445
Correct driving posture................. 33
Driving position memory ............ 229
Head restraints........................... 232
Memory recall function ............... 230
Seat heaters............................... 416
Seat position memory ................ 229
Seat ventilators .......................... 416
Front turn signal lights
Replacing light bulbs .................. 491
Turn signal lever ........................ 281
Fuel
Capacity ..................................... 560
Fuel gauge ................................. 172
Gas station information .............. 660
Information ................................. 567
Refueling .................................... 298
Type ........................................... 560
Warning light .............................. 515
Fuel consumption information
Average fuel consumption ......... 196
Current fuel consumption ........... 196
Fuel filler door .............................. 299
If the fuel filler door cannot be
opened..................................... 543
Opener ....................................... 299
Refueling .................................... 298
Fuel gauge .................................... 172
Fuses ............................................. 488
G
Gas station information ............... 660
Gauges........................................... 172
Glove box ...................................... 423
GPF (Gasoline Particulate Filter)
system ......................................... 390
H
Headlight cleaner .......................... 294
Headlights ..................................... 288
Automatic headlight leveling ...... 289
Automatic High Beam (AHB)...... 290
Extended Headlight Lighting system
................................................. 289
Light switch ................................ 288
Replacing light bulbs ..................491
Head restraints.............................. 232
Head-up display ............................ 189
Heated steering wheel ..................416
Heated Windshield Defroster....... 411
Heaters
Automatic air conditioning system
................................................. 406
Heated steering wheel ............... 416
Hybrid battery (traction battery).. 127
Outside rear view mirrors ........... 408
Seat heaters ............................... 416
High coolant temperature warning
light ..............................................509
High mounted stoplight
Replacing light bulbs ..................491
High voltage components ..............94
Hill-start assist control ................. 392
Hood............................................... 452
Warning message ...................... 518
Hooks
Cargo hooks ............................... 426
Coat hooks ................................. 439
Retaining hooks (floor mat) .......... 32
Horn ............................................... 234

600Alphabetical Index
Vanity lights................................ 430
Wattage...................................... 565
Vanity mirrors ............................... 430
Vehicle data recordings ................... 7
Vehicle identification number ..... 558
Vehicle Stability Control (VSC) ... 391
Ventilators (seat ventilators) ....... 416
VSC (Vehicle Stability Control) ... 391
W
Warning buzzers
Approach warning ...................... 339
Brake hold .................................. 514
Brake Override System .............. 514
Brake system ............................. 508
BSM OFF indicator .................... 513
Charging system ........................ 509
Downshifting ...................... 279, 281
Drive-Start Control ..................... 514
Electric power steering............... 510
High coolant temperature........... 509
Hybrid system overheat ............. 509
Low engine oil pressure ............. 509
LTA (Lane Tracing Assist) . 318, 511
Open door .................................. 206
Open hood ................................. 206
Open window ............................. 248
PKSB OFF indicator................... 512
Pre-collision warning .......... 311, 511
Radar cruise control ................... 339
RCTA (Rear Crossing Traffic Alert)
................................................. 349
RCTA OFF indicator .................. 513
RSA (Road Sign Assist) ............. 328
Seat belt reminder.............. 515, 516
Shift position ...................... 280, 281
Toyota parking assist ................. 371
Toyota parking assist-sensor OFF
indicator ................................... 512
Vehicle sway warning ................ 322
Warning lightsABS ............................................ 510
Brake hold operated indicator .... 514
Brake Override System .............. 514
Brake system .............................508
BSM OFF indicator..................... 513
Charging system ........................ 509
Driver’s seat belt reminder light.. 515
Drive-Start Control ..................... 514
Electric power steering ............... 510
Engine ........................................510
Front passenger’s seat belt reminder
light .......................................... 515
High coolant temperature ........... 509
Hybrid system overheat ............. 509
Low engine oil pressure ............. 509
Low fuel level .............................515
LTA indicator .............................. 511
Malfunction indicator lamp ......... 510
Parking brake indicator .............. 514
PCS warning light.......................511
PKSB OFF indicator ................... 512
PKSB.......................................... 512
RCTA OFF indicator................... 513
Rear passengers’ seat belt reminder
lights......................................... 516
Seat belt reminder light ...... 515, 516
Slip indicator............................... 513
SRS ............................................ 510
Tire pressure .............................. 515
Toyota parking assist-sensor OFF
indicator ...................................512
Warning messages .......................518
Washer
Checking .................................... 459
Low washer fluid warning message
......................................... 459, 518
Preparing and checking before win-
ter ............................................. 398
Switch................................. 294, 296
Washing and waxing .................... 442
Wheels ........................................... 473