battery TOYOTA RAV4 2021 (in English) Repair Manual

5827-3. Do-it-yourself maintenance
Fuse boxes (P.616)
Engine oil filler cap ( P.583)
Engine oil level dipstick ( P.582)
Battery ( P.587)
Brake fluid reservoir ( P.585)
Radiator ( P.585)
Electric cooling fan
Condenser ( P.585)
Washer fluid tank ( P.588)
Engine coolant reservoir ( P.584)
With the engine at operating
temperature and turned off, check the oil level on the dip-
stick.
Engine compartment
Components
A
B
C
D
E
F
G
H
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5877-3. Do-it-yourself maintenance
7
Maintenance and care
Check the battery as follows.
■Battery exterior
Make sure that the battery termi-
nals are not corroded and that
there are no loose connections,
cracks, or loose clamps.
Terminals
Hold-down clamp
■Before recharging
When recharging, t he battery pro-
duces hydrogen ga s which is flam-
mable and explosive. Therefore,
observe the following precautions
before recharging:
●If recharging wi th the battery
installed on the vehicle, be sure to
disconnect the ground cable.
●Make sure the power switch on
the charger is off when connecting
and disconnecting the charger cables to the battery.
■After recharging/reconnecting
the battery (vehicles with smart
key system)
The engine may not start. Follow the
procedure below to initialize the sys-
tem.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the engine.
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the battery. If this happens,
use the wireless remote control or
the mechanical key to lock/unlock
the doors.
●Start the engine with the engine
switch in ACC. T he engine may
not start with th e engine switch
turned off. However, the engine
will operate normally from the sec-
ond attempt.
●The engine switch mode is
recorded by the vehicle. If the bat-
tery is disconnected and recon-
nected, the vehi cle will return the
engine switch mode to the status
it was in before t he battery was
disconnected. Make sure to turn
off the engine switch before dis-
connecting the battery. Take extra
care when connecting the battery
if the engine switch mode prior to
the battery being disconnected is
unknown.
If the engine will no t start even after
multiple attempts, contact your
Toyota dealer.
NOTICE
■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 out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there ma y be a serious
problem.
Checking the battery
A
B

5887-3. Do-it-yourself maintenance
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.
WARNING
■Chemicals in the battery
A battery contains poisonous 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 precau-
tions while working on or near the
battery:
●Do not cause sparks by touch-
ing the battery terminals with
tools.
●Do not smoke or light a match
near the battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the battery.
●Keep children away from the
battery.
■Where to safely charge the
battery
Always charge the battery in an
open area. Do not charge the bat-
tery in a garage or closed room
where there is not sufficient venti-
lation.
■Emergency measures regard-
ing 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, continue
to apply water with a sponge or
cloth while traveling to the near-
est medical facility.
●If electrolyte gets on your skin
Wash the affected area thor-
oughly. If you fee l pain or burn-
ing, get medical attention
immediately.
●If electrolyte gets on your
clothes
It can soak through clothing on
to your skin. Imm ediately take
off the clothing and follow the
procedure above if necessary.
●If you accidentally swallow elec-
trolyte
Drink a large quantity of water
or milk. Get emergency medical
attention immediately.
■When there is insufficient bat-
tery fluid
Do not use if ther e is insufficient
fluid in the battery. There is a pos-
sible danger that the battery may
explode.
NOTICE
■When recharging the battery
Never recharge the battery while
the engine is running. Also, be
sure all accessories are turned
off.
Adding the washer fluid

6137-3. Do-it-yourself maintenance
7
Maintenance and care
■If the key battery is depleted
The following symptoms may occur:
●The smart key system (if
equipped) and wireless remote
control will no t function properly.
●The operationa l range will be
reduced.
Prepare the following before
replacing the battery:
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at
your Toyota dealer, local electrical
appliance shops or camera stores.
●Replace only with the same or
equivalent type recommended by
the manufacturer.
●Dispose of used batteries accord-
ing to the local laws.
Vehicles without smart key
system
1 Remove the cover.
Use a screwdriver of an appropriate
size. Forcedly prying may cause
the cover damaged.
NOTICE
■To prevent damage
●Be careful not to damage the
claws when replacing the wiper
insert.
●After the wiper blade is removed
from the wiper arm, place a
cloth, etc., between the rear
window and wiper arm to pre-
vent damage to the rear win-
dow.
●Be sure not to pull excessively
on the wiper insert or deform its
metal plates.
Wireless remote con-
trol/electron ic key bat-
tery
Replace the battery with a
new one if it is depleted.
Items to prepare
Replacing the battery

6147-3. Do-it-yourself maintenance
To prevent damag e to the key,
cover the tip of the screwdriver with
a rag.
2 Remove the battery cover.
If the battery cover is difficult to
remove, lift the ed ge to remove it.
3Remove the depleted bat-
tery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” ter-
minal facing up.
4Install the battery cover with
the tab facing up.
Push the entire edge of the battery cover into the key.
5
Install the key cover.
Align the key co ver with the key
and then press it straight into the
key.
Make sure that the key cover is
securely installed without any gaps
between it and the key.
Vehicles with smart key sys-
tem
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
Use a screwdriver of an appropriate
size. Forcedly prying may cause

6157-3. Do-it-yourself maintenance
7
Maintenance and care
the cover damaged.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec-
tronic key module may stick to the
cover and the battery may not be
visible. In this case, remove the
electronic key module in order to
remove the battery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” ter-
minal facing up.
4When installing, reverse the
steps listed.
WARNING
■Battery precautions
Observe the following precau-
tions. Failure to do so may result
in death or se rious injury.
●Do not swallow the battery.
Doing so may cause chemical
burns.
●A coin battery or button battery
is used in the electronic key. If a
battery is swa llowed, it may
cause severe chemical burns in
as little as 2 hours and may
result in death or serious injury.
●Keep away new and removed
batteries from children.
●If the cover cannot be firmly
closed, stop using the electronic
key and stow the key in the
place where children cannot
reach, and then contact your
Toyota dealer.
●If you accidentally swallow a
battery or put a battery into a
part of your b ody, get emer-
gency medical attention imme-
diately.
■To prevent battery explosion
or leakage of flammable liq-
uid or gas
●Replace the batt ery with a new
battery of the same type. If a
wrong type of ba ttery is used, it
may explode.
●Do not expose batteries to
extremely low pr essure due to
high altitude or extremely high
temperatures.
●Do not burn, bre ak or cut a bat-
tery.

6167-3. Do-it-yourself maintenance
1Turn the engine switch to
OFF.
2 Open the fuse box cover.
Engine compartment: Type A
fuse box (if equipped)
Push claw and to com-
pletely release the lock, and then lift
up the cover.
Engine compartment: Type B
fuse box
Push claw and to com-
pletely release the lock, and then lift
up the cover.
NOTICE
■For normal operation after
replacing the battery
Observe the following precautions
to prevent accidents:
●Always work with dry hands.
Moisture may cau se the battery
to rust.
●Do not touch or move any other
component inside the remote
control.
●Do not bend either of the battery
terminals.
Checking and replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses
AB
AB

627
8
8
When trouble arises
When trouble arises
8-1. Essential informationEmergency flashers .... 628
If your vehicle has to be stopped in an emergency
.................................. 628
If the vehicle is trapped in rising water ................ 629
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 631
If you think something is wrong ........................ 636
Fuel pump shut off system .................................. 637
If a warning light turns on or a warning buzzer sounds.................................. 638
If a warning message is dis- played........................ 649
If you have a flat tire.... 653
If the engine will not start .................................. 662
If you lose your keys ... 664
If the electronic key does not operate properly (vehi-
cles with smart key sys-
tem) ........................... 664
If the vehicle battery is dis- charged ..................... 666
If your vehicle overheats .................................. 670If the vehicle becomes stuck
.................................. 672

6288-1. Essential information
8-1.Essential information
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■Emergency flashers
●If the emergency flashers are
used for a long time while the
engine is not running, the battery
may discharge.
●If any of the SRS airbags deploy
(inflate) or in the event of a strong
rear impact, the emergency flash-
ers will turn on automatically.
The emergency flashers will turn
off automatically after operating
for approximatel y 20 minutes. To
manually turn t he emergency
flashers off, press the switch
twice. (The emergency flashers
may not turn on automatically
depending on the force of the
impact and conditions of the colli-
sion.)
1 Steadily step on the brake
pedal with both feet and
firmly depress it.
Do not pump the brake pedal
repeatedly as this will increase the
effort required to slow the vehicle.
2Shift the shift lever to N.
If the shift lever is shifted to N
3 After slowing down, stop the
vehicle in a safe place by the
road.
4 Stop the engine.
If the shift lever cannot be
shifted to N
3 Keep depressing the brake
pedal with both feet to reduce
vehicle speed as much as
possible.
4 Perform the following proce-
dure to stop the engine:
Vehicles without smart key
system
Turn the engine switch to ACC.
Emergency flashers
The emergency flashers are
used to warn other drivers
when the vehicle has to be
stopped in the road due to a
breakdown, etc.
Operating instructions
If your vehicle has to
be stopped in an emer-
gency
Only in an emergency, such
as if it becomes impossible
to stop the vehicle in the
normal way, stop the vehi-
cle using the following pro-
cedure:
Stopping the vehicle

6468-2. Steps to take in an emergency
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may not detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), driver’s seat position sen-
sor, driver’s seat belt buckle switch,
front passenger occupant classifica-
tion system (ECU and sensors),
“AIR BAG ON” indicator light, “AIR
BAG OFF” indicator light, front pas-
senger’s seat belt buckle switch,
driver’s seat belt p retensioner, front
passenger’s seat be lt pretensioner
and force limiter, airbags, intercon-
necting wiring and power sources.
(  P.34)
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel t ank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go o ff after several
driving trips.
If the light does not go off even after
several trips, contact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the battery charge becomes
insufficient or the voltage temporar-
ily drops, the electric power steering
system warning light may come on
and the warning buzzer may sound.
■When the tire pressure warning
light comes on ( vehicles with
tire pressure warning system)
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.653
If none of the tires are punctured:
Turn the engine switch to OFF then
turn it to ON. Check if the tire pres-
sure warning light comes on or
blinks.
If the tire pressur e warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your
Toyota dealer immediately.
If the tire pressur e warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.599)
■The tire pressure warning light
may come on due to natural
causes (vehicles with tire pres-
sure warning system)
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this ca se, adjusting the
tire inflation pressure will turn off the
warning ligh t (after a few minutes).
■When a tire is replaced with a
compact spare tire (vehicles
with tire pressure warning sys-
tem)
The compact spare tire is not
equipped with a tire pressure warn-