check engine TOYOTA RAV4 2023 Repair Manual

4737-2. Steps to take in an emergency
7
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.473)
One of the following may be the
cause of the problem:
 The battery may be dis-
charged. ( P.476)
 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.213)
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)

4747-2. 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.515)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.141)
●The electronic key function may
have stopped. ( P.141)
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.141)
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.

4757-2. Steps to take in an emergency
7
When trouble arises
Use the mechanical key
(P.118) 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

4767-2. Steps to take in an emergency
3Firmly depress the brake
pedal and check that is
displayed on the multi-infor-
mation display.
4 Press the engine switch
shortly and firmly.
In the event that the engine still
cannot be started, contact your
Toyota dealer.
■Stopping the engine
Shift the shift lever to P, set the
parking brake and press the engine
switch as you no rmally do when
stopping the engine.
■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.425)
■Alarm (if equipped) (for Canada)
Using the mechanical key to lock
the doors will not set the alarm sys-
tem.
If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered.
■Changing engine switch modes
Release the brake pedal and press
the engine switch in step 3 above.
The engine does not start and
modes will be cha nged each time
the switch is pressed. ( P.207)
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.
1Vehicles with alarm system:
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.73)
2 Open the hood. ( P.395)
3 Connect a positive jumper cable clamp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connect a negative cable clamp to
If the vehicle battery
is discharged
The following procedures
may be used to start the
engine if the vehicle’s bat-
tery is discharged.
You can also call your
Toyota dealer or a qualified
repair shop.
Restarting the engine
A
B
C

4817-2. Steps to take in an emergency
7
When trouble arises
3After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be us ed in an emer-
gency if coolant is unavailable.
If water was added in an emer-
gency, have the vehicle inspected at your Toyota dealer as soon as
possible.
6
Start the engine and turn the
air conditioning system on to
check that the radiator cool-
ing fan operates and to check
for coolant leaks from the
radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check th ese, turn the air
conditioning system on and off
repeatedly. (The fa n may not oper-
ate in freezing temperatures.)
7 If the fan is not operating:
Stop the engine immediately
and contact your Toyota
dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
8 Check if “Engine Coolant
Temp High Stop in a Safe
Place See Owner’s Manual”
is shown on the multi-infor-
mation display.
If the message does not disappear:
Stop the engine and contact your
Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
A
B
A
B
C

4888-1. Specifications
■Oil capacity (Drain and refill  reference*)
*: The engine oil capacity is a reference quantity to be used whe n changing
the engine oil. Warm up and turn off the engine, wait more than 5 min-
utes, and check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is
used in your Toyota vehicle.
Use Toyota approved “Toyota
Genuine Motor Oil” or equiva-
lent to satisfy the following
grade and viscosity.
Oil grade:
ILSAC GF-6B multigrade engine
oil Recommended viscosity:
SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.
Engine
Model2.5 L 4-cylinder (A25A-FKS)
Type4-cylinder in line
, 4-cycle, gasoline
Bore and stroke3.44  4.07 in. (87.50  103.48 mm)
Displacement151.8 cu. in. (2487 cm3)
Valve clearanceAutomatic adjustment
Drive belt tensionAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity (Reference)14.5 gal. (55 L, 12.1 Imp.gal.)
Lubrication system
With filter4.8 qt. (4.5 L , 4.0 Imp. qt.)
Without filter4.4 qt. (4.2 L, 3.7 Imp. qt.)

540What 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.474)
 Vehicles with smart key sys-
tem:
If you lose your electronic
keys, the risk of vehicle theft
increases significantly. Con-
tact your Toyota dealer imme-
diately. ( P.474)
 Is the key battery weak or
depleted? ( P.425)
 Vehicles with smart key sys-
tem:
Is the engine switch in ON?
When locking the doors, turn
the engine switch to OFF.
( P.207) 
Vehicles with smart key sys-
tem:
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.117,
141)
 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.124)
 Is the shift lever in P?
( P.203)
 Is the battery discharged?
( P.476)
 Did you press the engine
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 engine does not start
(vehicles without smart
key system)
The engine does not start
(vehicles with smart key
system)

542What to do if... (Troubleshooting)
Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the
alarm sounds. ( P.71)
To stop the alarm, turn the engine
switch to ON or start the engine.
 Is the message displayed on
the multi-information display?
Check the message on the
multi-information display.
( P.459)
 When a warning light turns on
or a warning message is dis-
played, refer to P.449, 459.
 Stop the vehicle in a safe
place and replace the flat tire
with the spare tire. ( P.463)
Try the procedure for when
the vehicle becomes stuck in
mud, dirt, or snow. ( P.482)
An alarm is activated and
the horn sounds (if
equipped)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed
When a problem has
occurred
If you have a flat tire
The vehicle becomes
stuck

Alphabetical Index545
Checking .............................. 400
Preparing and checking before
winter.................................. 325
Warning light ........................ 450
Cooling system ...................... 400 Engine overheating .............. 480
Cruise control Dynamic radar cruise control with full-speed range .......... 264
Cup holders ............................ 351
Current fuel economy ...... 95, 105
Curtain shield airbags ............. 33
Customizable features ........... 509
D
Daytime running light system220 Replacing light bulbs ............ 432
Deck board .............................. 354
Defogger Outside rear view mirrors ... 333, 340
Rear window ................ 333, 340
Windshield.................... 333, 340
Differential .............................. 491
Digital Rear-view Mirror ......... 156
Dimensions ............................. 486
Dinghy towing ........................ 201
Display BSM (Blind Spot Monitor)..... 276
Consumption screen ............ 111
Drive information .................... 97
Driving information ......... 95, 106
Dynamic radar cruise control with full-speed range .......... 264
Intuitive parking assist .......... 280
LTA (Lane-Tracing Assist) ... 255
Multi-informatio n display 93, 102
RCTA (Rear Cross Traffic Alert) function............................... 289
Warning messages .............. 459
Do-it-yourself maintenance . 388, 393 Door lock
Back door .............................125
Side doors ............................119
Smart key system .................139
Wireless remote control........116
Doors Automatic door locking and unlocking system ................124
Back door .............................125
Door glasses ........................167
Door lock ..............................119
Open door warning buzzer ...124
Outside rear view mirrors .....165
Rear door child-protectors ....124
Side doors ............................119
Downhill assist control system ...............................................316
Drive information ......................97
Driver’s seat belt reminder light ...............................................455
Driver’s seat position memory ...............................................147Driving position memory .......147
Memory recall function .........149
Drive-Start Control (DSC) Sudden start restraint control184
Driving Break-in tips .........................180
Correct posture .......................27
Driving mode select switch ...310
Procedures ...........................179
Winter drive tips....................325
Driving informatio n display ...95,
106
Driving mode select switch ...310
Driving position memory .......147 Memory recall function .........149
Driving support system informa- tion display......................97, 106
DSC (Drive-Start Control) Sudden start restraint control184

546Alphabetical Index
Dynamic radar cruise control with full-speed rangeFunction ............................... 264
Warning message ................ 459
Dynamic Torque Control AWD system ................................... 319
Dynamic Torque Vectoring AWD system ................................... 319
E
Eco drive mode ...................... 310
Eco Driving Indicator ....... 96, 105
Eco Driving Indicator Light ... 96, 105
EDR (Event data recorder)......... 8
Elapsed time ............................. 97
Electric Power Steering (EPS) Function ............................... 319
Warning light ........................ 451
Electronic key Battery-saving function......... 141
If the electronic key does not operate properly ................. 474
Replacing the battery ........... 425
Electronic sunshade .............. 173 Jam protection function ........ 174
Operation ............................. 173
Emergency, in case of If a warning buzzer sounds .. 449
If a warning light turns on ..... 449
If a warning message is dis-played................................. 459
If the electronic key does not operate properly ................. 474
If the engin e will not start ..... 472
If the vehicle battery is dis- charged .............................. 476
If the vehicle is submerged or water on the road is rising .. 441
If you have a flat tire ............. 463
If you lose your keys ............ 474
If you think something is wrong ...........................................447
If your vehicle becomes stuck ...........................................482
If your vehicle has to be stopped in an emergency .................440
If your vehicle needs to be towed ...........................................443
If your vehicle ove rheats ......480
Emergency flashers ...............440
Engine Compartment........................398
Engine switch ...............203, 204
Fuel pump shut off system ...448
Hood .....................................395
How to start the engine 203, 204
Identification number ............487
If the engine will not start......472
If your vehicle has to be stopped in an emergency .................440
Ignition switch (Engine switch) ...................................203, 204
Overheating ..........................480
Tachometer ......................83, 88
Engine coolant Capacity ...............................489
Checking ..............................400
Preparing and checking before winter ..................................325
Warning light ........................450
Engine coolant temperature ..83, 88
Engine immobilizer system .....70
Engine oil Capacity ...............................488
Checking ..............................398
Preparing and checking before winter ..................................325
Warning light ........................450
Engine switch .................203, 204 Auto power off fun ction.........207
Changing the engine switch modes.................................207