2021 TOYOTA RAV4 PLUG-IN HYBRID warning light

497
7
7-3. Do-it-yours elf maintenance
Maintenance and care
WARNING
■When working on the engine
compartment
●Make sure that “IGNITION ON” on the multi-information display and
the “READY” indicat or 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 anyt hing that may burn easily, such as paper and
rags, in the engi ne compartment.
●Do not smoke, cause sparks or
expose an open flame to fuel or the
12-volt battery. Fu el and 12-volt battery fumes are flammable.
●Take care because brake fluid can harm your hands or eyes and dam -
age painted surfac es. 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 swi tch 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.504)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.,
from getting in your eyes.
NOTICE
■If you remove th e 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 br ake 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.

4987-3. 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 lo cked properly, it
may open while the vehicle is in motion and cause an accident, which
may result in death or serious injury.
■To prevent burns
Do not touch the pipes when the com -
pressor is operati ng or after it is stopped, because the pipes are hot.
Touching by hands before the pipes
cool down may cause burns.
■After installing the support rod
into the slot
Make sure the rod supports the hood
securely from falli ng down on to your
head or body.

507
7
7-3. Do-it-yours elf maintenance
Maintenance and care
doors.
●Start the hybrid system with the power
switch in ACC. The hybrid system
may not start with the power switch turned off. Howeve r, 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 b efore disconnect
the 12-volt battery. Take extra care when connecting the 12-volt battery if
the power switch m ode prior to dis-
charge is unknown.
If the hybrid system will not start even
after multiple attem pts 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 expl osive. 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 batter y 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 wate r with a sponge or
cloth while traveling to the nearest
medical facility.
●If electrolyte g ets on your skin
Wash the affec ted 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. Immediat ely 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 insu fficient 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.

511
7
7-3. Do-it-yours elf maintenance
Maintenance and care
every 5000 km (3000 miles).
Do not fail to initial ize the tire pressure
warning system after tire rotation.
Front
■When rotating the tires
Make sure that the power switch is OFF. If the tires are rotated while the power
switch is in ON, the tire position informa -
tion will not be updated.
If this accidentally occurs, either turn the
power switch to OFF and then to ON, or
initialize the system after checking that
the tire pressure is properly adjusted.
Your vehicle is equi pped with a tire
pressure warning system that uses
tire pressure warning valves and
transmitters to detect low tire infla -
tion pressure before serious prob -
lems arise.
The tire pressure warning system
of this vehicle adopts a 2-type
warning system
 When “Adjust Pressure” is dis-
played (Normal Warning)
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.575, 624)
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.575, 582, 593)
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.
■How to change the unit
1 Park the vehicle in a safe place
and turn the power switch off.
Changing the unit cannot be performed while the vehicle is moving.
2 Turn the power switch to ON.
Tire pressure warning sys-
tem
A

523
7
7-3. Do-it-yours elf maintenance
Maintenance and care
(→P.525)
■When replacing the tires and
wheels
If the ID code of the tire pressure warn -
ing valve and transm itter is not regis-
tered, the tire pre ssure 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.
■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.525)
 When changing between two
registered wheel sets.
When the tire pressure warning
system is initialized, the current tire
inflation pressu re is set as the
benchmark pressure.
■How to initialize the tire pres -
sure warning system
1 Park 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.
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 auth orized 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 v alve 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 repa ired 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 authoriz ed repairer, or any reliable repairer or other qualified ser -
vice shop as soon as possible. Make
sure to replace the tire pressure warn - ing valve and transm itter when repair-
ing or replacing the tire. ( →P.511,
531)
Initializing the tire pressure
warning system

5247-3. Do-it-yourself maintenance
2Adjust the tire inflation pressure
to the specified cold tire inflation
pressure level. ( →P.624)
Make sure to adjust the tire pressure to
the specified cold tire inflation pressure level. The tire pressure warning system
will operate based o n this pressure
level.
3 Start the hybrid system.
4 Press or of the meter
control switches on the steering
wheel and select .
5 Press or of the meter
control switches, select “Vehi -
cle Settings” and then press and
hold .
6 Press or of the meter
control switches, select “TPWS”
and then press .
7 Press 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-informat ion display while
the tire pressure w arning system deter- mines the position.
8 Drive 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 k m/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 mor e, park the vehicle in a safe place for approximately 20
minutes and then drive the vehicle
again.
■When initializing
●Initialization is performed while driving at a vehicle speed of approximately
40 km/h (25 mph) or more.
●Make sure to carry out initialization
after adjusting the tire inflation pres -
sure. Also, make s ure the tires are
cold before carrying out initialization or tire inflation pressure adjustment.
●The tire pressure warning system can be initialized by yourself, but depend -
ing on the driving conditions and driv -
ing environment, initialization may take some time to complete.
■The initialization operation
●If you have accident ally turned the power switch to OFF during initializa -
tion, it is not necessary to restart the
initialization again as initialization will restart automatically when the power
switch has been tu rned to ON for the
next time.

525
7
7-3. Do-it-yours elf maintenance
Maintenance and care
●If you accidentally perform initializa-
tion when initializ ation is not neces- sary, adjust the tire inflation pressure
to the specified level when the tires
are cold, and conduct initialization again.
●While the position of each tire is being determined and the inflation pres -
sures are not being displayed on the
multi-information display, if the infla - tion pressure of a ti re drops, the tire
pressure warning light will come on.
■If the tire pressure warning system
is not initialized properly
●In the following situations, initialization
may take longer than usual to be com - pleted or may not be possible. Nor -
mally, initialization completes within
approximately 30 minutes. • Vehicle is not drive n at approximately
40 km/h (25 mph) or more
• Vehicle is driven on unpaved roads • Vehicle is driven near other vehicles
and system cannot recognize tire
pressure warning valve and transmit - ters of your vehicle over those of other
vehicles.
• If the vehicle is dri ven in heavy traffic or another situation where other vehi -
cles are driven close by, it may take
time for the system t o recognize the tire pressure warning valve and trans -
mitters of your vehicle over those of
other vehicles.
●If initialization does not complete after
driving for 1 hour or more, park the vehicle in a safe place for approxi-
mately 20 minutes and then drive the
vehicle again.
●If the vehicle is rev ersed during initial-
ization, the data up to that point is
reset, so perform the initialization pro - cedure again from the beginning.
●In the following situations, initialization will not be started or was not com -
pleted properly and the system will not
operate properly. Pe rform the initial- ization procedure again.
• If, when attempting to start initializa -
tion, the tire pressure warning light
does not blink 3 times.
• If, when the vehicl e has been driven for about 20 minutes after performing
initialization, the tire pressure warning
light blinks for approximately 1 minute and then illuminates.
If initialization cannot be completed after
performing the above procedure, con -
tact any authorized T oyota retailer or
Toyota authorized repairer, or any reli -
able repairer.
Every tire pressure warning valve
and transmitter has a unique ID
code. When replacing a tire pres -
sure warning valve and transmitter,
it is necessary to register the ID
code.
When registering the ID codes, per -
form the following procedure.
1 Park the vehicle in a safe place,
wait for approxi mately 20 min-
utes, and then start the hybrid
system.
WARNING
■When initializing the tire pres -
sure warning system
Do not initialize tire inflation pressure without first adjusting the tire inflation
pressure to the specified level. Other -
wise, the tire pressu re warning light may not come on even if the tire infla-
tion pressure is lo w, or it may come
on when the tire inf lation pressure is actually normal.
Registering ID codes

5267-3. Do-it-yourself maintenance
2Press or of the meter
control switches on the steering
wheel and select .
3 Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold .
4 Press or of the meter
control switches and select
“TPWS”, and then press .
5 Press or of the meter
control switches and select
“Identifying Each Wheel & Posi -
tion”. Then press and hold
until the tire pressure warning
light starts slowly blinking 3
times.
The change wheel set mode is acti - vated and registration is started.
Then a message will be displayed on
the multi-information display.
When registration is being performed,
the tire pressure warning light will blink
for approximately 1 minute then illumi - nate and “--” will be displayed for the
inflation pressure o f each tire on the
multi-information display.
6 Drive straight (with occasional
left and right turns) at approxi -
mately 40 km/h (25mph) or
more for approximately 10 to 30
minutes.
When registration is completed, the tire
pressure warning light will go off and
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 k m/h (25 mph) or
more, registration c an be completed by
driving for a long ti me. However, if reg- istration does not complete after driving
for 1 hour or more, perform the proce-
dure again from the beginning.
7 Initialize the tire pressure warn-
ing system. ( →P.523)
■When registering ID codes
●ID code registration is performed
while driving at a vehicle speed of
approximately 40 km/h (25 mph) or more.
●Before performing ID code registra -
tion, make sure that no wheels with tire pressure warning valve and trans -
mitters installed ar e near the vehicle.
●Make sure to initialize the tire pres-
sure warning system a fter registering
the ID codes. If t he system is initial- ized before registering the ID codes,
the initialized val ues will be invalid.