engine TOYOTA RAV4 PLUG-IN HYBRID 2023 Workshop Manual

481
7
7-3. Do-it-yourself maintenance
Maintenance and care
■Engine 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.
●When the engine is new, for example directly after purchasing the vehicle or after replacing the engine
●If low quality oil or oil of an inappropri-ate viscosity is used
●When driving at high engine speeds or with a heavy load, when towing, or
when driving while accelerating or decelerating frequently
●When 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.
■Engine coolant reservoir
Reservoir cap
“FULL” line
WARNING
■Used engine oil
●Used 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.
●Dispose 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.
●Do not leave used engine oil within
the reach of children.
NOTICE
■To prevent serious engine dam- age
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
■If 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

4827-3. Do-it-yourself maintenance
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( P.578)
■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.580)
■Coolant 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.
■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 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
■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 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

483
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.
■Using 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
■When 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.
■When 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
■When 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

4847-3. Do-it-yourself maintenance
The 12-volt battery is located in the
right-hand side of luggage compart-
ment.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-mable and explosive. Therefore,
observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to dis-connect the ground cable.
●Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●Vehicles with steering lock function: The hybrid system may not start. Fol-
low the procedure below to initialize the system.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the hybrid system.
●Unlocking the doors using the smart entry & start system may not be possi-ble immediately after reconnecting the
12-volt battery. If this happens, use the wireless remote control or the
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.Doing so may cause streaking on the
vehicle’s painted surfaces, as well as damaging the pump leading to prob-lems of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as nec-
essary. Refer to the freezing temperatures listed on the label of the washer fluid
bottle.
12-volt battery
Location

513
7
7-3. Do-it-yourself maintenance
Maintenance and care
1 Turn the power switch off.
Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.
2 Open the fuse box cover.
Engine compartment: Type A
fuse box
Push claws and to completely
release the lock, and then lift up the
cover.
Engine compartment: Type B
fuse box
Push claws and to completely
release the lock, and then lift up the
cover.
WARNING
■To prevent battery explosion or leakage of flammable liquid or
gas
●Replace the battery with a new bat- tery of the same type. If a wrong
type of battery is used, it may explode.
●Do not expose batteries to extremely low pressure due to high altitude or extremely high tempera-
tures.
●Do not burn, break or cut a battery.
■Certification for the electronic key battery
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUC-
TIONS
NOTICE
■When replacing the battery
Use a flathead screwdriver of appro- priate size. Applying excessive force may deform or damage the cover.
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote con-trol.
●Do not bend either of the battery terminals.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses
AB
AB

5167-3. Do-it-yourself maintenance
Check the wattage of the light bulb
to be replaced. ( P.591)
Outside rear view mirrors
Outer foot lights (if equipped)
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
●Never use a fuse of a higher amperage rating than that indi-
cated, or use any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.Never replace a fuse with a wire,
even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as soon as possible.
■To prevent damage to the engine compartment fuse box cover
When opening the fuse box, com- pletely release the claw locks before lifting up the cover. Otherwise, the
claws may be damaged.
Light bulbs
You may replace the following
bulbs by yourself. The diffi-
culty level of replacement var-
ies depending on the bulb. As
there is a danger that compo-
nents may be damaged, we
recommend that replacement
is carried out by any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Preparing for light bulb
replacement
Bulb location
A

5288-1. Essential information
water pressure.
■Water level exceeds the floor
When the water level exceeds the floor and time has passed, the electrical equipment will get damaged, the power
windows will not operate, the engine and motor stop, and the vehicle may not be able to get moving.
■Using an emergency escape ham-
mer*1
Laminated glass*2 is used in the wind- shield and the windows on this vehicle.
Laminated glass cannot be shattered
with an emergency hammer*1.*1: Contact any authorized Toyota
retailer or Toyota authorized repairer,
or any reliable repairer or aftermarket
accessory manufacturer for further
information about an emergency
hammer.
*2: If equipped
■How to distinguish laminated glass
When looking from the cross-sectional
view point, laminated glass is two sheets of glass pasted together.
Laminated glass
Tempered glass
A
B
WARNING
■Caution while driving
Do not drive on roads where the
roads may be submerged or the water may be rising. Otherwise the vehicle may be damaged and cannot move,
as well as become flooded and set a drift, which may lead to death.

5328-2. Steps to take in an emergency
Wheel nut wrench can be purchased
at any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer.
 Fluid leaks under the vehicle
(Water dripping from the air con-
ditioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 High coolant temperature warn-
ing light flashes or come on
 Changes in exhaust sound
 Excessive tire squeal when cor-
nering
 Strange noises related to the
suspension system
 Pinging or other noises related to
the hybrid system
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■While towing
●When towing using cables or
chains, avoid sudden starts, etc. which place excessive stress on the towing eyelets, cables or chains.
The towing eyelets, cables or chains may become damaged, bro-ken debris may hit people, and
cause serious damage.
●Vehicles with steering lock function:
Do not turn the power switch off. There is a possibility that the steer-ing wheel is locked and cannot be
operated.
■Installing towing eyelets to the
vehicle
Make sure that towing eyelets are installed securely. If not securely
installed, towing eyelets may come loose during towing.
NOTICE
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.
If you think something is
wrong
If you notice any of the follow-
ing symptoms, your vehicle
probably needs adjustment or
repair. Contact any authorized
Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer as soon as possi-
ble.
Visible symptoms
Audible symptoms
Operational symptoms

535
8
8-2. Steps to take in an emergency
When trouble arises
■Charging system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging sys-
tem
 Immediately stop the vehicle in a safe place
and contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe place.
Handling method ( P.578)
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.578)
Warning lightDetails/Actions
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place
and contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.

5368-2. Steps to take in an emergency
■Malfunction indicator lamp
■SRS warning light
■ABS warning light
■Electric power steering system warning light (warning buzzer)
Warning lightDetails/Actions
Indicates a malfunction in:
 The hybrid system;
 The electronic engine control system;
 The electronic throttle control system; or
 The emission control system (if equipped)
 Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer,
or any reliable repairer immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
 The SRS airbag system; or
 The seat belt pretensioner system
 Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer,
or any reliable repairer immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
 The ABS; or
 The brake assist system
 Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer,
or any reliable repairer immediately.
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunction in the EPS (Electric Power
Steering) system
 Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer,
or any reliable repairer immediately.