check engine TOYOTA RAV4 2022 Repair Manual

5757-3. Do-it-yourself maintenance
7
Maintenance and care
■Coolant selection
Only use “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 technology.
U.S.A.:
“Toyota Super Long Life Coolant” is
a mixture of 50% coolant and 50%
deionized water. (Minimum tem-
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is
a mixture of 55% coolant and 45%
deionized water. (Minimum tem-
perature: -44°F [-42°C])
For more details about coolant, con-
tact your To yota dealer.
■If the coolant level drops within
a short time of replenishing
Visually check the radiators, hoses,
engine/power control unit coolant
reservoir caps, drain cock and water
pump.
If you cannot find a leak, have your
Toyota dealer, t est the cap and
check for leaks in the cooling sys-
tem.
Check the radiator and con-
denser, and clear away any for-
eign objects.
If either of the above parts is
extremely dirty or you are not
sure of their condition, have
your vehicle inspected by your
Toyota dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
WARNING
■When the engine is hot
Do not remove the engine coolant
reservoir cap.
The cooling system may be under
pressure and may spray hot cool-
ant if the cap is removed, causing
serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct
mixture of water and antifreeze
must be used to provide proper
lubrication, corrosion protection
and cooling. Be sure to read the
antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to
prevent it from damaging parts or
paint.
Checking the radiator and
condenser
WARNING
■When the engine is hot
Do not touch the radiator or con-
denser as they may be hot and
cause serious injuries, such as
burns.
■When the electric cooling fan
is operating
Do not touch the engine compart-
ment.
With the engine switch in ON, the
electric cooling fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. Be sure the
engine switch is off when working
near the electric cooling fan or
radiator grille.
Checking and adding the
brake fluid

5777-3. 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)
●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 vehicle 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 may be a serious
problem.
Checking the battery
A
B:$51,1*
■Chemicals in the battery
A battery contains poisonous and
corrosive sulfur ic 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.

5797-3. Do-it-yourself maintenance
7
Maintenance and care
Check if the treadwear indica-
tors are showing on the tires.
Also check the tires for uneven
wear, such as excessive wear
on one side of the tread.
Check the spare tire condition
and pressure if not rotated.New tread
Worn tread
Treadwear indicator
The location of treadwear indicators
is shown by a “TWI” or “ ” mark,
NOTICE
■Do not use any fluid other
than washer fluid
Do not use soapy water or engine
antifreeze instead of washer fluid.
Doing so may cause streaking on
the vehicle’s painted surfaces, as
well as damaging the pump lead-
ing to problems of the washer
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as
necessary.
Refer to the freezing tempera-
tures listed on the label of the
washer fluid bottle.
Tires
Replace or rotate tires in
accordance with mainte-
nance schedules and tread-
wear.
Checking tires
A
B
C

5827-3. Do-it-yourself maintenance
■When rotating the tires (vehi-
cles with tire pressure warning
system)
Make sure that the engine switch is
OFF. If the tires are rotated while
the engine switch i s in ON, the tire
position informa tion will not be
updated. If this accidentally occurs,
either turn the engine switch to OFF
and then to ON, or initialize the sys-
tem after checking that the tire pres-
sure is properly adjusted.
Your vehicle is equipped with a
tire pressure warning system
that uses tire pressure warning
valves and transmitters to detect
low tire inflation pressure before
serious problems arise.
 If the tire pressure drops
below a predetermined level,
the driver is warned by a
screen display and a warning
light. ( P.628)
 The tire pressure detected by
the tire pressure warning sys-
tem can be displayed on the
multi-information display.
( P.89)
The illustration used is intended
as an example, and may differ
from the image that is actually
displayed on the multi-informa-
tion display.
■Routine tire inflation pressure
checks
The tire pressure warning system
does not replace routine tire inflation
pressure checks . Make sure to
check tire inflation pressure as part
of your routine o f daily vehicle
checks.
■Tire inflation pressure
●It may take a few minutes to dis-
play the tire inflation pressure
after the engine switch is turned to
ON. It may also take a few min-
utes to display the tire inflation
pressure after infl ation pressure
has been adjusted.
●Tire inflation pressure changes
with temperature. The displayed
values may also be different from
the values measured using a tire
pressure gauge.
■Situations in which the tire
pressure warning system may
not operate properly
●In the following cases, the tire
pressure warning system may not
operate properly.
• If non-genuine Toyota wheels are used.
• A tire has been replaced with a tire that is not an OE (Original
Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains, etc. are equipped.
• An auxiliary-support ed run-flat tire
is equipped.
• If a window tint that affects the radio wave signals is installed.
Tire pressure warning
system (if equipped)

6007-3. 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 claws and to com-
pletely release the lock, and then lift
up the cover.
Engine compartment: Type B
fuse box
Push claws 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

6308-2. 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.36)
■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.637
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.584)
■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-

6358-2. Steps to take in an emergency
8
When trouble arises
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level may be low.
Check the level of the engine oil,
and add engine oil if necessary.
This message may be displayed if
the vehicle is sto pped on a slope.
Move the vehicle to a level surface
and check if the message disap-
pears.
■If “Maintenance Required
Soon” is shown
Indicates that all maintenance
according to the dr iven distance on
the maintenance schedule
* should
be performed soon.
Comes on approximately 4500
miles (7200 km) after the message
has been reset.
If necessary, perf orm maintenance.
Please reset the message after the
maintenance is performed.
(  P.563)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is shown
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.)
Perform the necessary mainte-
nance. Please reset the message
after the maintenance is performed.
(  P.563)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your vehicle.
■If a message that indicates the
malfunction of front camera is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. (P.225,
622)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●AHB (Automatic High Beam)
●RSA (Road Sign Assist)*
●Dynamic radar cruise control with
full-speed range
*: If equipped
■If a message that indicates the
malfunction of radar sensor is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. (P.225,
622)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Radar Cruise Control
Unavailable See Owner’s Man-
ual” is shown
The dynamic radar cruise control
with full-speed range system is sus-
pended temporarily or until the prob-
lem shown in the message is
resolved. (causes and coping meth-
ods: P.225)
■If “Radar Cruise Control
Unavailable” is shown
The dynamic radar cruise control
with full-speed range system cannot
be used temporarily. Use the sys-
tem when it becomes available
again.
■Warning buzzer
 P.629

6478-2. Steps to take in an emergency
8
When trouble arises
The battery terminal connec-
tions may be loose or cor-
roded.
The engine starting system may
be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, an interim
measure is available to start the
engine. ( P.647)
One of the following may be the
cause of the problem:
 The battery may be dis-
charged. ( P.650)
 One or both of the battery ter-
minals may be disconnected.
Contact your Toyota dealer if
the problem cannot be repaired,
or if repair procedures are
unknown.
When the engine does not start,
the following steps can be used as an interim measure to start
the engine if the engine switch is
functioning normally:
1
Pull the parking brake switch
to check that the parking
brake is set. ( P.201)
Parking brake indicator will come
on.
2 Shift the shift lever to P.
3 Turn the engine switch to
ACC.
4 Press and hold the engine
switch for about 15 seconds
while depressing the brake
pedal firmly.
Even if the engine can be
started using the above steps,
the system may be malfunction-
ing. Have the vehicle inspected
by your Toyota dealer.
The starter motor does
not turn over (vehicles
with smart key system)
The starter motor does
not turn over, the interior
lights and headlights do
not turn on, or the horn
does not sound
Emergency start function
(vehicles with smart key
system)

6488-2. Steps to take in an emergency
■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.688)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.128)
●The electronic key function may
have stopped. ( P.128)
If you lose your keys
New genuine keys can be
made by your Toyota dealer
using the other key and the
key number stamped on
your key number plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.
NOTICE
■When an electronic key is lost
(if equipped)
If the electronic key remains lost,
the risk of vehicle theft increases
significantly. Visit your Toyota
dealer immediately with all
remaining electronic keys that
were provided wit h your vehicle.
If the electronic key
does not operate prop-
erly (vehicles with
smart key system)
If communication between
the electronic key and vehi-
cle is interrupted ( P.128)
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 engine
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.

6498-2. Steps to take in an emergency
8
When trouble arises
Use the mechanical key
(P.106) in order to perform the
following operations.
1 Locks all the doors
2 Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 5 seconds
unlocks the other doors.
■Key linked functions
1 Closes the windows and the
moon roof
*1 or panoramic moon
roof
*1 (turn and hold)*2
2 Opens the windows and the
moon roof
*1 or panoramic moon
roof
*1 (turn and hold)*2
*1
: If equipped
*2: These settings must be custom- ized at your Toyota dealer.
1 Ensure that the shift lever is
in P and depress the brake
pedal.
2 Touch the Toyota emblem
side of the electronic key to
the engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to ON.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
ACC.
Locking and unlocking
the doorsWARNING
■When using the mechanical
key and operating the power
windows or the moon roof (if
equipped) or panoramic
moon roof (if equipped)
Operate the power window or the
moon roof or panoramic moon
roof after checking to make sure
that there is no p ossibility of any
passenger having any of their
body parts caught in the window
or the moon roof or panoramic
moon roof. Also, do not allow chil-
dren to operate t he mechanical
key. It is possible for children and
other passengers to get caught in
the power window or the moon
roof or panoramic moon roof.
Starting the engine