2021 TOYOTA RAV4 PRIME key battery

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

5348-2. Steps to take in an emergency
One of the following may be the
cause of the problem:
The AC charging cable may
be attached to the vehicle.
( P.123)
 The electronic key may not be
functioning properly.
( P.537)
 There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle. ( P.306)
 There may be a malfunction
in the immobilizer system.
( P.72)
 There may be a malfunction
in the steering lock system.
 The hybrid system may be
malfunctioning due to an elec-
trical problem such as elec-
tronic key battery depletion or
a blown fuse. However,
depending on the type of mal-
NOTICE
■Be careful when driving over
bumps with the compact
spare tire installed on the
vehicle
The vehicle height may become
lower when driving with the com-
pact spare tire compared to when
driving with standard tires. Be
careful when driving over uneven
road surfaces.
■Driving with tire chains and
the compact spare tire
Do not fit tire chains to the com-
pact spare tire.
Tire chains may damage the vehi-
cle body and adversely affect driv-
ing performance.
■When replacing the tires
When removing or fitting the
wheels, tires or the tire pressure
warning valve and transmitter,
contact your Toyota dealer as the
tire pressure warning valve and
transmitter may be damaged if not
handled correctly.
If the hybrid system
will not start
Reasons for the hybrid sys-
tem not starting vary
depending on the situation.
Check the following and
perform the appropriate
procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed ( P.279)

5378-2. Steps to take in an emergency
8
When trouble arises
carefully and slowly.
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on.
(Customizable features: P.574)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.218)
Use the mechanical key
( P.196) in order to perform the
If the electronic key
does not operate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.218)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the hybrid
system can be started by
following the procedure
below.
NOTICE
■In case of a smart key system
malfunction, o r other key
related problems
Take your vehicle with all the
electronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

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

5418-2. Steps to take in an emergency
8
When trouble arises
recharge the 12-volt battery
of your vehicle.
6 Open and close any of the
doors of your vehicle with the
power switch off.
7 Maintain the engine speed of
the second vehicle and start
the hybrid system of your
vehicle by turning the power
switch to ON.
8 Make sure the “READY” indi-
cator comes on. If the indica-
tor light does not come on,
contact your Toyota dealer.
9 Once the hybrid system has
started, remove the jumper
cables in the exact reverse
order from which they were
connected.
10 Close the exclusive jump
starting terminal cover, and
reinstall the fuse box cover to
its original position.
Once the hybrid system starts,
have the vehicle inspected at
your Toyota dealer as soon as
possible.
■Starting the hybrid system
when the 12-volt battery is dis-
charged
The hybrid system cannot be
started by push-starting.
■To prevent 12-vol t battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnec essary electri-
cal components when the vehicle is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at you
r Toyota dealer.
●Some systems may require initial-
ization. (P.582)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cleared. Before
removing the 12-vo lt battery termi-
nals, contact your Toyota dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt
battery will discha rge gradually even
when the vehicle i s not in use, due
to natural dischar ge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-
tery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing
the 12-volt battery
●In some cases, it may not be pos-
sible to unlock the doors using the
smart key system when the 12-
volt battery is discharged. Use the
wireless remote c ontrol or the
mechanical key to lock or unlock
the doors.
●The hybrid syste m may not start
on the first attemp t after reinstall-
ing the 12-volt battery. In that
case, start the hybrid system in
the same manner as when the
electronic key does not operate
properly ( P.538). This is not a
malfunction, as the hybrid system
will start normally on the second
attempt.

596What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your keys or
mechanical keys, new genu-
ine keys or mechanical keys
can be made by your Toyota
dealer. ( P.536)
 If you lose your electronic
keys, the risk of vehicle theft
increases significantly. Con-
tact your Toyota dealer imme-
diately. ( P.536)
 Is the key battery weak or
depleted? ( P.493)
 Is the power switch in ON?
When locking the doors, turn
the power switch off.
( P.283)
 Is the electronic key left inside
the vehicle?
When locking the doors,
make sure that you have the electronic key on your person.
 The function may not operate
properly due to the condition
of the radio wave. ( P.218)
 Is the child-protector lock set?
The rear door cannot be
opened from inside the vehi-
cle when the lock is set. Open
the rear door from outside
and then unlock the child-pro-
tector lock. ( P.202)
 Did you press the power
switch while firmly depress-
ing the brake pedal?
( P.279)
 Is the shift lever in P?
( P.279)
 Is the electronic key any-
where detectable inside the
vehicle? ( P.217)
 Is the steering wheel
unlocked? ( P.280)
 Is the electronic key battery
weak or depleted?
In this case, the hybrid sys-
If you have a problem,
check the following before
contacting your Toyota
dealer.
The doors cannot be
locked, unlocked, opened
or closed
You lose your keys
The doors cannot be
locked or unlocked
The rear door cannot be
opened
If you think something is
wrong
The hybrid system does
not start

Alphabetical Index603
Eco drive mode ...................... 377
EDR (Event data recorder)......... 8
E-Four (Electronic On-Demand AWD system) ........................ 381
Elapsed time ........................... 176
Electric motor Location.................................. 76
Specification ......................... 552
Electric Power Steering (EPS) Function ............................... 381
Warning light ........................ 513
Electronically Controlled Brake System (ECB) ....................... 380
Electronic key Battery-saving function......... 218
If the electronic key does not operate properly ................. 537
Replacing the battery ........... 493
Electronic sunshade .............. 252 Jam protection function ........ 253
Operation ............................. 252
Emergency, in case of If a warning buzzer sounds .. 511
If a warning light turns on ..... 511
If a warning message is dis-played................................. 523
If the 12-volt battery is dis- charged .............................. 539
If the electronic key does not operate properly ................. 537
If the fuel filler door cannot be opened ............................... 536
If the hybrid sy stem will not start
........................................... 534
If the vehicle is trapped in rising water .................................. 506
If you have a flat tire ............. 527
If you lose your keys ............ 536
If you think something is wrong ........................................... 509
If your vehicle becomes stuck ........................................... 548 If your vehicle has to be stopped
in an emergency .................505
If your vehicle needs to be towed ...........................................507
If your vehicle ove rheats ......544
Emergency flashers ...............504
Energy monitor .......................187
Engine Compartment........................460
Exhaust gas precautions ........49
Hood .....................................457
How to start the hybrid system...........................................279
Identification number ............551
If the hybrid sys tem will not start
...........................................534
If your vehicle has to be stopped in an emergency .................505
Overheating ..........................544
Power switch ........................279
Engine coolant Capacity ...............................553
Checking ..............................462
High coolant temperature warn-ing light ...............................512
Preparing and checking before winter ..................................387
Warning light ........................512
Engine oil Capacity ...............................552
Checking ..............................460
Preparing and checking before winter ..................................387
Warning light ........................512
Enhanced Vehicle Stability Con- trol (Enhanced VSC ) .............381
Enhanced VSC (Enhanced Vehi- cle Stability Control).............381
EPS (Electric Po wer Steering)
Function................................381
Warning light ........................513
EV/HV mode selection switch .78

606Alphabetical Index
Switch................................... 410
Wattage ................................ 556
Intuitive parking assist Function ............................... 356
Warning message ................ 359
J
JackPositioning a floor jack ......... 458
Vehicle-equipped jack .......... 528
Jack handle ............................. 528
Jam protection function Electronic sunshade ............. 253
Moon roof ............................. 249
Panoramic moon roof ........... 253
Power back door .................. 210
Power windows .................... 246
K
Keyless entrySmart key system................. 217
Wireless remote control ....... 196
Keys ......................................... 194 Battery-saving function......... 218
Electronic key ....................... 194
If the electronic key does not operate properly ................. 537
If you lose your keys ............ 536
Key number plate ................. 194
Keyless entry................ 196, 217
Mechanical key .................... 196
Power switch ........................ 279
Replacing the battery ........... 493
Warning buzzer .................... 217
Wireless remote control key . 196
Knee airbags ............................. 34
L
Lane Tracing Assist (LTA) ..... 323 Operation ............................. 323 Warning messages
...............332
Language (multi-information dis- play) ...............................179, 570
LATCH anchors ........................60
LED accessory lights .............296 Replacing light bulbs ............497
Lever Auxiliary catch lever .............457
Hood lock release lever ........457
Shift lever .............................285
Turn signal lever . ..................289
Wiper lever ...................301, 304
License plate lights Light switch...........................295
Replacing light bulbs ............497
Light bulbs Replacing .............................497
Wattage ................................556
Lights Automatic High Beam (AHB) 298
Emergency flasher switch ....504
Front interior lights................410
Headlight switch ...................295
Illuminated entry system .......411
Interior lights .........................410
Luggage compartment light .............................205, 209
Personal lights ......................411
Rear interior light ..................411
Replacing light bulbs ............497
Turn signal lever . ..................289
Vanity lights ..........................420
Wattage ................................556
Load capacity..........................268
LTA (Lane Tracing Assist) .....323 Operation..............................323
Warning messages ...............332
Luggage compartment light ................................205, 209Wattage ................................556
Luggage cover ........................418