2021 TOYOTA RAV4 PRIME stop start

4747-3. Do-it-yourself maintenance
be initialized. (P.476)
■When replacing the tires and
wheels
If the ID code of the tire pressure
warning valve and transmitter is not
registered, the tire pressure warning
system will not work properly. After
driving for about 20 minutes, the tire
pressure warning light blinks for 1
minute and stays on to indicate a
system malfunction.
■The tire pressure warning
system must be initialized
in the following circum-
stances:
 When rotating the tires. 
When changing the tire.
 After registering the ID codes.
( P.476)
 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
pressure 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.
2Adjust the tire inflation pres-
sure to the specified cold tire
inflation pressure level.
( P.555)
Make sure to adjust the tire pres-
sure to the specifie d cold tire infla-
tion pressure level. The tire
pressure warning system will oper-
ate based on this pressure level.
3Start the hybrid system.
4 Press or of the meter
control switches on the steer-
ing wheel and select .
NOTICE
■Repairing or replacing tires,
wheels, tire pressure warn-
ing valves, transmitters and
tire valve caps
●When removing or fitting the
w he e ls, tir es or th e t ir e pr es sur e
warning valves and transmit-
ters, contact your Toyota dealer
as the tire pr essure warning
valves and transmitters may be
damaged if not handled cor-
rectly.
●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 ti re valve caps,
do not use tire valve caps other
than those specified.
The cap may become stuck.
Initializing the tire pres-
sure warning system

4887-3. Do-it-yourself maintenance
8Install the clip.
■Cleaning the ai r intake vent
●Dust in the air intake vent may
interfere with the cooling of the
DC/DC converter. If the cooling
performance/capacity of the
DC/DC converte r becomes lim-
ited, the 12-volt battery may dis-
charge. Inspect and clean the air
intake vent periodically.
●Improper handling of the air intake
vent cover and filt er may result in
damage to them. If you have any
concerns about cleaning the filter,
contact your Toyota dealer.
■If “Maintenance required for
DCDC converter cooling parts
See Owner’s Manual” is shown
on the multi-information display
●If this warning m essage is shown
on the multi-information display,
remove the air in take vent cover
and clean the filter. ( P.486)
●After cleaning the air intake vent,
start the hybrid system and check
that the warning message is no
longer shown.
It may take approximately 20 min-
utes after the hybrid system is
started until the warning message
disappears. If the warning mes-
sage does not disappear, have
the vehicle inspected by your
Toyota dealer.
WARNING
■When cleaning the air intake
vent
●Do not use water or other liq-
uids to clean the air intake vent.
If water is applied to the DC/DC
converter or other components,
a malfunction or fire may occur.
●Before cleaning the air intake
vent, make sure to turn the
power switch off to stop the
hybrid system.
NOTICE
■When cleaning the air intake
vent
When cleaning the air intake vent,
make sure to onl y use a vacuum
to suck out dust and clogs. If a
compressed air blow gun, etc. is
used to blow out dust and clogs,
the dust or clog s may be pushed
into the air intake vent, which may
affect the perfor mance of the
DC/DC converter and cause a
malfunction.

4917-3. Do-it-yourself maintenance
7
Maintenance and care
the claw detaches, and then
remove the wiper blade from
the wiper arm.
3 Pull the wiper insert out past
the stopper on the wiper
blade, and then continue to
pull until it is completely
removed.
Lightly grasp betw een the claws of
the wiper blade to allow the wiper
insert to lift up, mak ing it easier to
remove.
4 Remove the 2 metal plates
from the old wiper insert and install them to the replace-
ment wiper insert.
5 Insert the wiper insert starting
from the claw at the center of
the wiper blade. Pass the
wiper insert through the 3
claws so that it sticks out
from the stopper, and then
pass the wiper insert through
the final remaining claw.
Applying a small amount of washer
fluid to the wiper i nsert can make it
easier to insert the claws into the
grooves.
6 Check that the wiper blade
claws are fitted in the
grooves of the wiper insert.
If the wiper blade claws are not fit-
ted in the grooves of the wiper
insert, grasp the wiper insert and
slide it back and forth multiple times
to insert the claws into the grooves.
Lightly lift up the center of the wiper
insert to make the rubber easier to

503
8
8
When trouble arises
When trouble arises
8-1. Essential informationEmergency flashers .... 504
If your vehicle has to be stopped in an emergency.................................. 505
If the vehicle is trapped in rising water ................ 506
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 507
If you think something is wrong ........................ 509
If a warning light turns on or a warning buzzer sounds.................................. 511
If a warning message is dis- played........................ 523
If you have a flat tire.... 527
If the hybrid system will not start ........................... 534
If you lose your keys ... 536
If the fuel filler door cannot be opened ................. 536
If the electronic key does not operate properly .. 537
If the 12-volt battery is dis- charged ..................... 539
If your vehicle overheats .................................. 544
If the vehicle becomes stuck .................................. 548

5238-2. Steps to take in an emergency
8
When trouble arises
pedal is shown
A warning message about an opera-
tion of the brake pedal may be
shown while the dr iving support sys-
tems such as PCS (Pre-Collision
system) or the dynamic radar cruise
control with full-speed range is oper-
ating. If a warning message is
shown, be sure to decelerate the
vehicle or follow an instruction
shown on the multi -information dis-
play.
• A warning message is shown when Brake Override System
operates. ( P.259, 517)
• A warning message is shown
when Drive-Start Control or Park-
ing Support Brake function (if
equipped) operates ( P.259,
363). Follow the instructions on
the multi-inform ation display.
●If a message about an operation
of the power switch is shown
An instruction for operation of the
power switch is shown when the
incorrect procedure for starting the
hybrid system is performed or the
power switch is operated incorrectly.
Follow the instructions shown on the
multi-information display to operate
the power switch again.
●If a message abou t a shift lever
operation is shown
To prevent the shift lever from being
operated incorrectly or the vehicle
from moving unexpectedly, a mes-
sage that requires shifting the shift
lever may be sho wn on the multi-
information display. In that case, fol-
low the instruction of the message
and shift the shift lever.
●If a message or image about an
open/close state of a part or
replenishment of a consumable is
shown
Confirm the part indicated by the multi-information
display or a warn-
ing light, and then perform the cop-
ing method such as closing the
open door or replenishing a con-
sumable.
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information di splay is malfunc-
tioning. Have the vehicle inspected
by your Toyota dea ler immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If the following messages are
shown, follow the instructions,
accordingly.
• “Blind Spot Monitor Unavailable” ( P.348, 523)
• “Rear Cross Traffic Alert Unavail- able”( P.348, 523)
• “Engine Coolant Temp High”
( P.544)
●If the following messages are
shown, there may be a malfunc-
tion. Immediately stop the vehicle
in a safe place and contact your
Toyota dealer. Continuing to drive
the vehicle may be dangerous.
• “Plug-in charging system malfunc-
tion”
• “Hybrid System Malfunction”
• “Charging System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunc-
tion”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction”
●If the following messages are
shown, there may be a malfunc-
tion. Immediately have the vehi-
cle inspected by your Toyota
dealer.
• “Oil Pressure Low”
• “Braking Power Low”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in

5248-2. Steps to take in an emergency
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid System Stopped”
• “Engine Stopped”
●If “Maintenance required for
DCDC converter cooling parts
See Owner’s Manual” is shown,
the filter may be clogged, the air
intake vent may be blocked, or
there may be a gap in the duct.
Therefore, perform the following
correction procedure.
• If the air intake vent or filter of the DC/DC converter are dirty, per-
form the procedures on P.486 to
clean them.
• If the warning message is shown
when the air intake vent and filter
of the DC/DC converter are not
dirty, have the vehicle inspected
at your Toyota dealer.
●If “12-Volt Battery Charging Sys-
tem Malfunction Stop in a Safe
Place See Owner’s Manual” is
shown
Indicates a malfunction in the vehi-
cle’s charging system. Pull over and
stop the vehicle as soon as it is safe
to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially lim ited in order to
reduce the power consumption of
the 12-volt battery.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.544
■If “Traction Battery Needs to be
Protected Refrain from the Use
of N Position” is shown
This message may be displayed
when the shift lever is in N. As the hybrid battery (traction bat-
tery) cannot be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.
■If “Traction Battery Needs to be
Protected Shift into P to
Restart” is shown
This message is displayed when the
hybrid battery (traction battery)
charge has becom e extremely low
because the shift lever has been left
in N for a certain amount of time.
When operating the vehicle, shift to
P and restart the hybrid system.
■If “Shift to P when Parked” is
shown
Message is displayed when the
driver’s door is opened without turn-
ing the power switch to OFF with the
shift lever in any p osition other than
P.
Shift the shift lever to P.
■If “Shift is in N Release Acceler-
ator Before Shifting” is shown
Message is displayed when the
accelerator pedal has been
depressed and the shift lever is in N.
Release the accelerator pedal and
shift the shift lever to D or R.
■If “Press Brake when Vehicle is
Stopped Hybrid System may
Overheat” is shown
Message is displayed when the
accelerator pedal is depressed to
maintain the vehicl e position when
stopped on a upward slope, etc.
If this continues, the hybrid system
may overheat.
Release the accelerator pedal and
depress the brake pedal.
■If “Auto Power OFF to Conserve
Battery” is shown
Power was turned off due to the
automatic power off function.
Next time when starting the hybrid
system, operate the hybrid system
for approximately 5 minutes to

5398-2. Steps to take in an emergency
8
When trouble arises
3Firmly depress the brake
pedal and check that
is displayed on the multi-
information display.
4 Press the power switch
shortly and firmly.
In the event that the hybrid system
still cannot be started, contact your
Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the
parking brake and press the power
switch as you no rmally do when
stopping the hybrid system.
■Replacing the key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly when the bat-
tery is depleted. ( P.493)
■Changing power switch modes
Release the brake pedal and press
the power switch in step 3 above.
The hybrid system does not start
and modes will be changed each
time the switch is pressed.
(  P.283)
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Vehicles with alarm: Confirm
that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and the doors locked. ( P.74)
2 Open the hood ( P.457) and
fuse box cover.
Push claw and to com-
pletely release the lock, and then lift
If the 12-volt battery is
discharged
The following procedures
may be used to start the
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your
Toyota dealer or a qualified
repair shop.
Restarting the hybrid sys-
tem
AB

5448-2. Steps to take in an emergency
■If the high coolant tempera-
ture warning light comes
on, flashes or “Engine
Coolant Temp High Stop in
a Safe Place See Owner’s
Manual” is shown on the
multi-information display
1 Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the hybrid system.
2 If you see steam:
Carefully lift the hood after
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan, etc.
■To prevent damaging the
vehicle
The exclusive jump starting termi-
nal is to be used when charging
the 12-volt battery from another
vehicle in an emergency. It cannot
be used to jump start another
vehicle.
If your vehicle over-
heats
The following may indicate
that your vehicle is over-
heating.
 The high coolant tempera-
ture warning light ( P.161)
comes on or flashes, or a
loss of hybrid system power
is experienced. (For exam-
ple, the vehicle speed does
not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown
on the multi-information dis-
play.
 Steam comes out from
under the hood.
Correction procedures