ECU TOYOTA RAV4 2023 Repair Manual

4236-3. Do-it-yourself maintenance
6
Maintenance and care
Stopper
Claw
2 Remove the 2 metal plates
from the wiper insert pulled
out, and install the plates to a
new wiper insert.
Make sure that the cutout location
and warp direction of the metal
blades are same as the original.
3Install the wiper insert to the
wiper blade from the side
without the stopper.
4 Secure the stopper of the
wiper insert with the claw of
the wiper blade.
1 Lift up the rear window wiper
arm head cap.
2 Move the wiper blade until a
click sound can be heard and 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 between the claws of
the wiper blade to allow the wiper
insert to lift up, making it easier to
remove.
4 Remove the 2 metal plates
from the old wiper insert and
Rear window wiper
A
B

4266-3. 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

4306-3. Do-it-yourself maintenance
■After a fuse is replaced
●When installing the lid, make sure
that the tab is installed securely.
●If the lights do not turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.432)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow,
protecting the wiring harness from
damage.
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
■To prevent damage to the
engine compartment fuse box
cover
When opening the fuse box, com-
pletely release the claw locks
before lifting up the cover. Other-
wise, the claws may be damaged.

4366-3. Do-it-yourself maintenance
3Turn the bulb base counter-
clockwise.
4 Remove the light bulb.
5 Install a new light bulb then
install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.
6 Align the grooves on the light
unit with the claws, and insert
the light unit straight so that
the pin on the light unit fit into
the hole.Confirm that the light unit is com-
pletely secured.
7Reinstall the screws.
8 Reinstall the cover.
■Back-up lights
1 Open the back door and
remove the cover.
To prevent damage to the cover,
protect the tip of the screwdriver

4376-3. Do-it-yourself maintenance
6
Maintenance and care
with a rag.
2Turn the bulb base counter-
clockwise.
Remove the cord from the clip
before turning the bulb base.
3Remove the light bulb. 4
Install a new light bulb.
5 Install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.
Secure the cord wit h the clip back
again after installing the bulb base.
6 Reinstall the cover.

4386-3. Do-it-yourself maintenance
WARNING
■Replacing light bulb
●Turn off the light. Do not attempt
to replace the bulb immediately
after turning off the light.
The bulb become very hot and
may cause burns.
●Do not touch the glass portion
of the light bulb with bare
hands. When it is unavoidable
to hold the glass portion, use
and hold with a clean dry cloth
to avoid getting moisture and
oils on the bulb.
Also, if the bulb is scratched or
dropped, it may blow out or
crack.
●Fully install light bulb and any
parts used to secure it. Failure
to do so may result in heat dam-
age, fire, or water entering the
light unit. This may damage the
light or cause condensation to
build up on the lens.
●Do not attempt t o repair or dis-
assemble light bulbs, connec-
tors, electric circuits or
component parts.
Doing so may result in death or
serious injury due to electric
shock.
■To prevent damage or fire
●Make sure bulb is fully seated
and locked.
●Check the wattage of the bulb
before installing to prevent heat
damage.

4417-1. Essential information
7
When trouble arises
Vehicles with smart key sys-
tem
Press and hold the engine switch
for 2 consecutive seconds or more,
or press it briefly 3 times or more in
succession.
5Stop the vehicle in a safe
place by the road. 
If the door can be opened,
open the door and exit the
vehicle.
 If the door can not be opened,
open the window using the
power window switch and
ensure an escape route.
 If the window can be opened,
exit the vehicle through the
window.
 If the door and window cannot
be opened due to the rising
water, remain calm, wait until
the water level inside the
vehicle rises to the point that
the water pressure inside of
the vehicle equals the water
pressure outside of the vehi-
cle and then open the door
after waiting for the rising
water to enter the vehicle, and
exit the vehicle. When the
WARNING
■If the engine has to be turned
off while driving
●Power assist for the brakes and
steering wheel will be lost, mak-
ing the brake pedal harder to
depress and the steering wheel
heavier to turn. Decelerate as
much as possible before turning
off the engine.
●Vehicles without smart key sys-
tem: Never attempt to remove
the key, as doing so will lock the
steering wheel.
If the vehicle is sub-
merged or water on
the road is rising
This vehicle is not designed
to be able to drive on roads
that are deeply flooded with
water. Do not drive on roads
where the roads may be
submerged or the water
may be rising. It is danger-
ous to remain in the vehicle,
if it anticipated that the vehi-
cle will be flooded or set a
drift. Remain calm and fol-
low the following.

4457-2. Steps to take in an emergency
7
When trouble arises
If a tow truck is not available in
an emergency, your vehicle may
be temporarily towed using
cables or chains secured to the
emergency towing eyelets. This
should only be attempted on
hard surfaced roads for at most
50 miles (80 km) at under 18
mph (30 km/h).
A driver must be in the vehicle to
steer and operate the brakes.
The vehicle’s wheels, drive
train, axles, steering and brakes
must be in good condition.
To have your vehicle towed by
another vehicle, the towing eye-
let must be installed to your
vehicle. Install the towing eyelet
using the following procedure.
1Take out the wheel nut
wrench and towing eyelet.
( P.464)
2 Using a flathead screw-
driver, remove eyelet cover
( ), and then remove eyelet
cover ( ).
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body as shown in the
illustration.
Type A
Type B
3 Insert the towing eyelet into
the hole and tighten partially
by hand.
Type A
Emergency towing (vehi-
cles with towing eyelet)
Emergency towing proce-
dure (vehicles with towing
eyelet)
A
B

4467-2. Steps to take in an emergency
Type B
4 Tighten down the towing eye-
let securely using a wheel nut
wrench or hard metal bar.
Type A
Type B
5 Securely attach cables or
chains to the towing eyelet.
Take care not to damage the vehi-
cle body.
6Enter the vehicle being towed
and start the engine.
Turn off the Parkin g Support Brake function (if equipped):
P.299
If the engine does not start, turn the
engine switch to ON.
Vehicles with Stop & Start system:
Before towing the ve hicle, turn the
engine switch to OFF once, and
then start the engine.
7 Shift the shift lever to N and
release the parking brake.
Turn automatic mode off. ( P.215)
When the shift lever cannot be
shifted:  P.210
■While towing
If the engine is not running, the
power assist for the brakes and
steering will not function, making
steering and braking more difficult.
■Wheel nut wrench (if equipped)
Wheel nut wrench is installed in the
tool bag in luggage compartment.
(  P.464)
WARNING
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
■While towing
●When towing using cables or
chains, avoid sudden starts, etc.
which place excessive stress on
the towing eyelets, cables or
chains. The towing eyelets,
cables or chains may become
damaged, broken debris may hit
people, and cause serious dam-
age.
●Vehicles without smart key sys-
tem: Do not turn the engine
switch to the “LOCK” position.
There is a possibility that the
steering wheel is locked and
cannot be operated.

4477-2. Steps to take in an emergency
7
When trouble arises
Fluid leaks under the vehicle
(Water dripping from the air
conditioning after use is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Engine coolant temperature
gauge needle continually
points higher than normal.
 Changes in exhaust sound
 Excessive tire squeal when
cornering
 Strange noises related to the
suspension system
 Pinging or other noises
related to the engine
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one
WARNING
■Installing towi ng eyelets to
the vehicle
Make sure that towing eyelets are
installed securely. If not securely
installed, towing eyelets may
come loose during towing.
NOTICE
■To prevent damage to the
vehicle during emergency
towing
Do not secure cables or chains to
the suspension components.
■When towing the vehicle
(vehicles with Stop & Start
system)
If it is necessary to tow the vehicle
with all four wheels on the ground,
perform the following procedure
before towing the vehicle, in order
to protect t he system.
Turn the engine switch to OFF
and then start the engine or turn
the engine switch to ON.
If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms