engine TOYOTA RAV4 PLUG-IN HYBRID 2022 Service Manual

409
6 6-1. Using the air conditioning system and defogger
Interior features
• is operating
QWater droplets during air condi-
tioning operation
The outside heat exchanger, accumula-
tor and air conditioning piping may incur
condensation or frost may form. During
or after the air conditioning operation,
water droplets may fall from the vehicle.
However, it is not a malfunction.
Accumulator
Outside heat exchanger
QFogging up of the windows
OThe windows will easily fog up when
the humidity in the vehicle is high.
Turning “A/C” switch on will dehumid-
ify the air from the outlets and defog
the windshield effectively.
OIf you turn “A/C” switch off, the win-
dows may fog up more easily.
OThe windows may fog up if the recir-
culated air mode is used.
QWhile using “My Room Mode”
OIt may not be possible to obtain the
intended defogging performance even
if is pressed. If the windows
need to be defogged before driving,
stop charging power and then press
.
OWhen the outside temperature is low,
heating may feel insufficient due to
restricted operation of the air condi-
tioning. Heating cannot be performed
when it is -10°C (14°F) or less as the gasoline engine cannot be started
during “My Room Mode”. If heating is
desired, stop charging and remove
the AC charging cable from the vehi-
cle.
QWhen driving on dusty roads
Close all windows. If dust thrown up by
the vehicle is still drawn into the vehicle
after closing the windows, it is recom-
mended that the air intake mode be set
to outside air mode and the fan speed to
any setting except off.
QOutside/recirculated air mode
OSetting to the recirculated air mode
temporarily is recommended in pre-
venting dirty air from entering the
vehicle interior and helping to cool the
vehicle when the outside air tempera-
ture is high.
OOutside/recirculated air mode may
automatically switch depending on the
temperature setting or the inside tem-
perature.
QOperation of the air conditioning
system in Eco drive mode
OIn Eco drive mode, the air conditioning
system is controlled as follows to pri-
oritize fuel efficiency:
• Engine speed and compressor opera-
tion controlled to restrict heating/cool-
ing capacity
• Fan speed restricted when automatic
mode is selected
OTo improve air conditioning perfor-
mance, perform the following opera-
tions:
• Turn off Eco drive mode (P.387)
• Turn off blower customization
(P.408)
QWhen the outside temperature falls
to nearly 0°C (32°F)
The dehumidification function may not
operate even when “A/C” switch is
pressed.
QVentilation and air conditioning
odors
OTo let fresh air in, set the air condition-
ing system to the outside air mode.
A
B

7
441
7
Maintenance and care
Maintenance and care
7-1. Maintenance and care
Cleaning and protecting the
vehicle exterior ............... 442
Cleaning and protecting the
vehicle interior ................ 445
7-2. Maintenance
Maintenance requirements 448
7-3. Do-it-yourself maintenance
Do-it-yourself service precau-
tions ................................ 450
Hood ................................. 452
Positioning a floor jack...... 453
Engine compartment ........ 455
12-volt battery ................... 460
Tires.................................. 463
Tire inflation pressure ....... 472
Wheels.............................. 473
Air conditioning filter ......... 475
Cleaning the DC/DC Con-
verter air intake vent and filter
....................................... 479
Wiper insert replacement .. 482
Electronic key battery ....... 486
Checking and replacing fuses
....................................... 488
Light bulbs ........................ 491

443
7
7-1. Maintenance and care
Maintenance and care
QFront side windows water-repel-
lent coating (except quarter win- dow)
OThe following precautions can extend the effectiveness of the water-repel-lent coating.
• Remove any dirt, etc., from the front side windows regularly.• Do not allow dirt and dust to accumu-
late on the windows for a long period. Clean the windows with a soft, damp cloth as soon as possible.
• Do not use wax or glass cleaners that contain abrasives when cleaning the windows.
• Do not use any metallic objects to remove condensation build up.
QBrake pads and calipers
Rust may form if the vehicle is parked
with wet brake pads or disc rotors, caus- ing them to stick. Before parking the vehicle after it is washed, drive slowly
and apply the brakes several times to dry the parts.
QBumpers
Do not scrub with abrasive cleaners.
QPlated portions
If dirt cannot be removed, clean the parts as follows:
OUse a soft cloth dampened with an approximately 5% solution of neutral detergent and water to clean the dirt
off.
OWipe the surface with a dry, soft cloth
to remove any remaining moisture.
OTo remove oily deposits, use alcohol
wet wipes or a similar product.
WARNING
QWhen washing the vehicle
Do not apply water to the inside of the
engine compartment. Doing so may cause the electrical components, etc. to catch fire.
QWhen cleaning the windshield
Set the wiper switch to off. If the wiper switch is in “AUTO”, the
wipers may operate unexpectedly in the following situations, and may result in hands being caught or other
serious injuries and cause damage to the wiper blades.
Off
“AUTO”
OWhen the upper part of the wind-
shield where the raindrop sensor is located is touched by hand
OWhen a wet rag or similar is held close to the raindrop sensor
OIf something bumps against the windshield
OIf you directly touch the raindrop sensor body or if something bumps
into the raindrop sensor
QPrecautions regarding the
exhaust pipes
Exhaust gasses cause the exhaust pipes to become quite hot.
When washing the vehicle, be careful not to touch the pipes until they have cooled sufficiently, as touching hot
exhaust pipes can cause burns.
A
B

449
7 7-2. Maintenance
Maintenance and care
request that a record of maintenance
be kept.
QDoes your vehicle need repairs?
Be on the alert for changes in perfor-
mance and sounds, and visual tip-offs
that indicate service is needed. Some
important clues are:
OEngine missing, stumbling or pinging
OAppreciable loss of power
OStrange engine noises
OA fluid leak under the vehicle (How-
ever, water dripping from the air con-
ditioning system after use is normal.)
OChange in exhaust sound (This may
indicate a dangerous carbon monox-
ide leak. Drive with the windows open
and have the exhaust system checked
immediately.)
OFlat-looking tires, excessive tire
squeal when cornering, uneven tire
wear
OVehicle pulls to one side when driven
straight on a level road
OStrange noises related to suspension
movement
OLoss of brake effectiveness, spongy
feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one
side when braking
OEngine coolant temperature continu-
ally higher than normal (P.551)
If you notice any of these clues, take
your vehicle to any authorized Toyota
retailer or Toyota authorized repairer, or
any reliable repairer as soon as possi-
ble.
Your vehicle may need adjustment or
repair.

4507-3. Do-it-yourself maintenance
7-3.Do-it-y ours elf main ten ance
Do-it-yourself service
precautions
If you perform maintenance by
yourself, be sure to follow the
correct procedure as given in
these sections.
Maintenance
ItemsParts and tools
12-volt battery
condition
( P.460)
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Engine/power
control unit
coolant level
( P.457)
• “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 technol-
ogy
“Toyota Super Long
Life Coolant” is pre-
mixed with 50%
coolant and 50%
deionized water.
• Funnel (used only
for adding coolant)
Engine oil level
( P.455)
• “Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only
for adding engine
oil)
Fuses
( P.488)
• Fuse with same
amperage rating as
original
DC/DC Con-
verter air
intake vent
( P.479)
• Vacuum cleaner,
etc,
• Phillips screwdriver
Light bulbs
( P.491)
• Bulb with same
number and watt-
age rating as origi-
nal
• Phillips-head screw-
driver
• Flathead screw-
driver
•Wrench
Radiator and
condenser
( P.458)

Tire inflation
pressure
( P.472)
• Tire pressure gauge
• Compressed air
source
Washer fluid
( P.459)
• Water or washer
fluid containing anti-
freeze (for winter
use)
• Funnel (used only
for adding water or
washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or
become electrically energized. To avoid death or serious injury, observe the following precautions.
ItemsParts and tools

451
7
7-3. Do-it-yourself maintenance
Maintenance and care
WARNING
QWhen working on the engine compartment
OMake sure that “IGNITION ON” on the multi-information display and the “READY” indicator are both off.
OKeep hands, clothing and tools away from the moving fan.
OBe careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other flu-ids may also be hot.
ODo not leave anything that may burn easily, such as paper and
rags, in the engine compartment.
ODo not smoke, cause sparks or
expose an open flame to fuel. Fuel fumes are flammable.
OTake care because brake fluid can harm your hands or eyes and dam-age painted surfaces. If fluid gets
on your hands or in your eyes, flush the affected area with clean water immediately. If you still experience
discomfort, consult a doctor.
QWhen working near the electric
cooling fan or radiator grille
Be sure the power switch is off. 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. ( P.458)
QSafety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc., from getting in your eyes.
NOTICE
QIf you remove the air cleaner fil-ter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt in the air.
QIf the fluid level is low or high
It is normal for the brake fluid level to
go down slightly as the brake pads wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill- ing, it may indicate a serious problem.

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

4567-3. Do-it-yourself maintenance
oil level on the dipstick.
QChecking the engine oil
1Park the vehicle on level
ground. After warming up the
engine and turning off the hybrid
system, wait more than 5 min-
utes for the oil to drain back into
the bottom of the engine.
2Holding a rag under the end,
pull the dipstick out.
3Wipe the dipstick clean.
4Reinsert the dipstick fully.
5Holding a rag under the end,
pull the dipstick out and check
the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ depending on the type of vehicle or
engine.
6Wipe the dipstick and reinsert it
fully.
QChecking the oil type and pre-
paring the items needed
Make sure to check the oil type and
prepare the items needed before
adding oil.
Engine oil selection
P.561
Oil quantity (Low  Full)
1.5 L (1.6 qt., 1.3 Imp. qt.)
Item
Clean funnel
QAdding engine oil
If the oil level is below or near the
low level mark, add engine oil of the
same type as that already in the
engine.
1Remove the oil filler cap by turn-
ing it counterclockwise.
2Add engine oil slowly, checking
the dipstick.
3Install the oil filler cap by turning
it clockwise.
A
B
C

457
7
7-3. Do-it-yourself maintenance
Maintenance and care
QEngine oil consumption
A certain amount of engine oil will be
consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance inter- vals.
OWhen the engine is new, for example directly after purchasing the vehicle or after replacing the engine
OIf low quality oil or oil of an inappropri-ate viscosity is used
OWhen driving at high engine speeds or with a heavy load, when towing, or
when driving while accelerating or decelerating frequently
OWhen leaving the engine idling for a long time, or when driving frequently through heavy traffic
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir when the
hybrid system is cold.
QEngine coolant reservoir
Reservoir cap
“FULL” line
WARNING
QUsed engine oil
OUsed engine oil contains poten-
tially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so
care should be taken to avoid pro- longed and repeated contact. To remove used engine oil from your
skin, wash thoroughly with soap and water.
ODispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and fil-
ters in household trash, in sewers or onto the ground. Call any autho-rized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, service station or auto parts store for information concern-
ing recycling or disposal.
ODo not leave used engine oil within
the reach of children.
NOTICE
QTo prevent serious engine dam- age
Check the oil level on a regular basis.
QWhen replacing the engine oil
OBe careful not to spill engine oil on the vehicle components.
OAvoid overfilling, or the engine could be damaged.
OCheck the oil level on the dipstick every time you refill the vehicle.
OBe sure the engine oil filler cap is properly tightened.
QIf oil is spilled on the engine cover
To prevent the engine cover from
being damaged, remove any engine oil from the engine cover as soon as possible using a neutral detergent. Do
not use an organic solvent such as brake cleaner.
Checking the coolant
A
B

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