2023 TOYOTA RAV4 PLUG-IN HYBRID light

4747-3. 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.484)
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Engine/power
control unit
coolant level
( P.481)
• “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.479)
• “Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only
for adding engine
oil)
Fuses
( P.513)
• Fuse with same
amperage rating as
original
DC/DC Con-
verter air
intake vent
( P.504)
• Vacuum cleaner,
etc,
• Phillips screwdriver
Light bulbs
( P.516)
• Bulb with same
number and watt-
age rating as origi-
nal
• Phillips-head screw-
driver
• Flathead screw-
driver
•Wrench
Radiator and
condenser
( P.482)

Tire inflation
pressure
( P.498)
• Tire pressure gauge
• Compressed air
source
Washer fluid
( P.483)
• 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

475
7
7-3. Do-it-yourself maintenance
Maintenance and care
WARNING
■When working on the engine compartment
●Make sure that “IGNITION ON” on the multi-information display and the “READY” indicator are both off.
●Keep hands, clothing and tools away from the moving fan.
●Be 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.
●Do not leave anything that may burn easily, such as paper and
rags, in the engine compartment.
●Do not smoke, cause sparks or
expose an open flame to fuel. Fuel fumes are flammable.
●Take 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.
■When 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.482)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc., from getting in your eyes.
NOTICE
■If 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.
■If 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.

4767-3. Do-it-yourself maintenance
1Pull the hood lock release lever.
The hood will pop up slightly.
2Push the auxiliary catch lever to
the left and lift the hood.
3 Hold the hood open by inserting
the supporting rod into the slot.Hood
Release the lock from the
inside of the vehicle to open
the hood.
Opening the hood
WARNING
■Pre-driving check
Check that the hood is fully closed
and locked. If the hood is not locked properly, it
may open while the vehicle is in motion and cause an accident, which may result in death or serious injury.
■To prevent injuries
The support rod may be hot after driv-
ing the vehicle. Touching the hot sup- port rod may lead to burns or other serious injuries.
■To prevent burns
Do not touch the pipes when the com-
pressor is operating or after it is stopped, because the pipes are hot.
Touching by hands before the pipes
cool down may cause burns.

485
7
7-3. Do-it-yourself maintenance
Maintenance and care
mechanical key to lock/unlock the
doors.
●Start the hybrid system with the power
switch in ACC. The hybrid system may not start with the power switch turned off. However, the hybrid sys-
tem will operate normally from the second attempt.
●The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected, the vehicle will return
the power switch mode to the status it was in before the 12-volt battery was disconnected. Make sure to turn off
the power switch before disconnect the 12-volt battery. Take extra care when connecting the 12-volt battery if
the power switch mode prior to dis- charge is unknown.
If the hybrid system will not start even
after multiple attempts at all methods above, contact any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.
WARNING
■Chemicals in the 12-volt battery
The 12-volt battery contains poison-
ous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce
the risk of death or serious injury, take the following precautions while work-ing on or near the 12-volt battery:
●Do not cause sparks by touching the 12-volt battery terminals with
tools.
●Do not smoke or light a match near
the 12-volt battery.
●Avoid contact with eyes, skin and
clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the 12-volt bat-
tery.
●Keep children away from the 12- volt battery.
■Where to safely charge the 12-volt battery
Always charge the 12-volt battery in
an open area. Do not charge the 12- volt battery in a garage or closed room where there is not sufficient
ventilation.
■Emergency measures regarding
electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for
at least 15 minutes and get immediate
medical attention. If possible, con-
tinue to apply water with a sponge or
cloth while traveling to the nearest
medical facility.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If
you feel pain or burning, get medical
attention immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to
your skin. Immediately take off the
clothing and follow the procedure
above if necessary.
●If you accidentally swallow electro- lyte
Drink a large quantity of water or milk.
Get emergency medical attention
immediately.
■When there is insufficient 12-volt
battery fluid
Do not use if there is insufficient fluid in the 12-volt battery. There is a pos-
sible danger that the 12-volt battery may explode.

489
7 7-3. Do-it-yourself maintenance
Maintenance and care
The tire pressure warning light comes
on and a buzzer sounds when the tire
inflation pressure becomes low due to
natural air leakage or outside tempera-
ture. (Ways of coping: P.541, 590)
When “Immediately Check tire
when Safe” is displayed (Emer-
gency Warning)
The tire pressure warning light comes
on and a buzzer sounds when the tire
inflation pressure becomes low sud-
denly due to a blowout. (Ways of cop-
ing: P.541, 548, 559)
However, the system may not be able
to detect sudden tire ruptures (bursting,
etc.).
The tire pressure detected by the
tire pressure warning system can
be displayed on the multi-informa-
tion display.
The unit can be changed.
With 7-inch display:
With 12.3-inch display:
■How to change the unit (with
7-inch display)
1Park the vehicle in a safe place
and turn the power switch off.
Changing the unit cannot be performed
while the vehicle is moving.
2Turn the power switch to ON.
3Press or of the meter
control switches on the steering
wheel and select .
4Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold .
5Press or of the meter
control switches and select
“TPWS”, and then press .
6Press or to select “Set-
ting Unit”.
7Press or to select the
desired unit and then press .
■How to change the unit (with
12.3-inch display)
1Park the vehicle in a safe place
and turn the power switch off.
Changing the unit cannot be performed

491
7
7-3. Do-it-yourself maintenance
Maintenance and care
could be extended.
●When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.
■Warning performance of the tire pressure warning system
The warning of the tire pressure warning
system will change in accordance with the conditions under which it was initial-ized. For this reason, the system may
give a warning even if the tire pressure does not reach a low enough level, or if the pressure is higher than the pressure
that was adjusted to when the system was initialized.
When replacing tires or wheels, tire
pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning
valves and transmitters are
installed, new ID codes must be
registered in the tire pressure warn-
ing computer and the tire pressure
warning system must be initialized.
( P.495)
■When replacing the tires and
wheels
If the ID code of the tire pressure warn- ing valve and transmitter is not regis-
tered, the tire pressure warning system will not work properly. After driving for about 10 minutes, the tire pressure
warning light blinks for 1 minute and stays on to indicate a system malfunc-tion.
Installing tire pressure warn-
ing valves and transmitters
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning
valves, transmitters and tire valve caps
●When removing or fitting the
wheels, tires or the tire pressure warning valves and transmitters, contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning valves
and transmitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water could enter the tire
pressure warning valves and the tire pressure warning valves could be bound.
●When replacing tire valve caps, do not use tire valve caps other than
those specified. The cap may become stuck.
■To avoid damage to the tire pres-sure warning valves and trans-mitters (vehicles without spare
tire)
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is used, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer or other qualified ser-vice shop as soon as possible. After
use of liquid sealant, make sure to replace the tire pressure warning valve and transmitter when repairing
or replacing the tire. ( P.491)

4927-3. Do-it-yourself maintenance
■The tire pressure warning sys-
tem must be initialized in the
following circumstances:
When rotating the tires.
When changing the tire.
After registering the ID codes.
(P.495)
When changing between two
registered wheel sets.
When the tire pressure warning
system is initialized, the current tire
inflation pressure is set as the
benchmark pressure.
■How to initialize the tire pres-
sure warning system (with 7-
inch display)
1Park the vehicle in a safe place
and stop the hybrid system for
20 minutes or more.
Initialization cannot be performed while
the vehicle is moving.
2Adjust the tire inflation pressure
to the specified cold tire inflation
pressure level. (P.590)
Make sure to adjust the tire pressure to
the specified cold tire inflation pressure
level. The tire pressure warning system
will operate based on this pressure
level.
3Start the hybrid system.
4Press or of the meter
control switches on the steering
wheel and select .5Press or of the meter
control switches, select “Vehi-
cle Settings” and then press and
hold .
6Press or of the meter
control switches, select “TPWS”
and then press .
7Press or of the meter
control switches, select the “Set-
ting Pressure”. Then press and
hold .
“Set Pressure Accepted” will be dis-
played on the multi-information display
and the tire pressure warning light will
blink 3 times.
When the message disappears, initial-
ization is complete.
A message is displayed on the multi-
information display. Also, “--” is dis-
played for inflation pressure of each tire
on the multi-information display while
the tire pressure warning system deter-
mines the position.
8Drive straight (with occasional
left and right turns) at approxi-
mately 40 km/h (25mph) or
more for approximately 10 to 30
minutes.
When initialization is complete, the
inflation pressure of each tire will be
displayed on the multi-information dis-
Initializing the tire pressure
warning system

493
7 7-3. Do-it-yourself maintenance
Maintenance and care
play.
Even if the vehicle is not driven at
approximately 40 km/h (25 mph) or
more, initialization can be completed by
driving for a long time. However, if ini-
tialization does not complete after driv-
ing for 1 hour or more, park the vehicle
in a safe place for approximately 20
minutes and then drive the vehicle
again.
■How to initialize the tire pres-
sure warning system (with
12.3-inch display)
1Park the vehicle in a safe place
and stop the hybrid system for
20 minutes or more.
Initialization cannot be performed while
the vehicle is moving.
2Adjust the tire inflation pressure
to the specified cold tire inflation
pressure level. (P.590)
Make sure to adjust the tire pressure to
the specified cold tire inflation pressure
level. The tire pressure warning system
will operate based on this pressure
level.
3Start the hybrid system.
4Press and hold to display
the cursor on the content display
area (center) of the multi-infor-
mation display.
5Press or of the meter
control switches to select
and then press .
6Press or of the meter
control switches, select “
Vehicle Settings” and then press
and hold .7Press or of the meter
control switches, select “TPWS”
and then press .
8Press or of the meter
control switches, select the “Set-
ting Pressure”. Then press and
hold .
“Set Pressure Accepted” will be dis-
played on the multi-information display
and the tire pressure warning light will
blink 3 times.
When the message disappears, initial-
ization is complete.
A message is displayed on the multi-
information display. Also, “--” is dis-
played for inflation pressure of each tire
on the multi-information display while
the tire pressure warning system deter-
mines the position.
9Drive straight (with occasional
left and right turns) at approxi-
mately 40 km/h (25mph) or
more for approximately 10 to 30
minutes.
When initialization is complete, the
inflation pressure of each tire will be
displayed on the multi-information dis-
play.
Even if the vehicle is not driven at
approximately 40 km/h (25 mph) or
more, initialization can be completed by
driving for a long time. However, if ini-
tialization does not complete after driv-