2023 TOYOTA COROLLA ECU

852-1. Instrument cluster
2
Vehicle status information and indicators
*1: These lights come on when the engine switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the engine is started, or
after a few seconds. There may
be a malfunction in a system if
the lights do not come on, or turn
off. Have the vehicle inspected
by your Toyota dealer.
*2: This light comes on when the system is turned off.
*3: This light illumi nates on the out-
side rear view mirrors.
*4: This light illuminates on the multi-information display.
*5: When the outside temperature is approximately 37°F (3°C) or
lower, this indicator will flash for
approximately 10 seconds, then
stay on.
*6: This light illuminates on the cen-ter panel.
*7: This light illuminates on the over-head console.
VSC OFF indicator
*1, 2
(  P.250)
Smart key system indica-
tor
*4 (if equipped)
(  P.155)
(U.S.A.)
Parking brake indicator
( P.168)
(Canada)
Parking brake indicator
( P.168)
Brake hold standby indi-
cator
*1 (  P.171)
Brake hold operated indi-
cator
*1 (  P.171)
Eco Driving Indicator
Light
*1 (  P. 9 3 )
Low outside temperature
indicator
*5 (  P.86, 89)
Security indicator
*6
(  P.77, 78)
“AIR BAG ON/OFF”
indicator
*1, 7 ( P. 4 1 )
Sport mode indicator (if
equipped) ( P.247)

1113-2. Opening, closing and locking the doors
3
Before driving
3-2.Opening, closing and locking the doors
■Smart key system (if
equipped)
Carry the electronic key to
enable this function.
1 Grip the driver’s door handle
to unlock the door. Holding
the driver’s door handle for
approximately 2 seconds
unlocks all the doors. Grip
the front passenger’s door
handle to unlock all the
doors.
*
Make sure to touch the sensor on
the back of the handle.
The doors cannot be unlocked for 3
seconds after the doors are locked.
*: The door unlock settings can be
changed. ( P.112, 412)
2 Touch the lock sensor (the
indentation on the side of the
front door handle) to lock all
the doors.
Check that the door is securely
locked.
■Wireless remote control (if
equipped)
Vehicles without a smart key
system
1 Locks all the doors
Check that the d oor is securely
locked.
2 Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 3 seconds unlocks the
other doors.
Press and hold to open the win-
dows
*1and moon roof*1, 2.
Vehicles with a smart key sys-
tem
1 Locks all the doors
Check that the d oor is securely
locked.
2 Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
Doors
Unlocking and locking the
doors from the outside

1133-2. Opening, closing and locking the doors
3
Before driving
is not opened within 60 seconds
after is pressed, the doors will
be locked again an d the alarm will
automatically be set.)
In case that the alarm is triggered,
immediately stop the alarm. ( P. 7 8 )
■Operation signals (with a wire-
less remote control function)
Vehicles without a smart key sys-
tem
A buzzer sounds and the emer-
gency flashers flash to indicate that
the doors have been
locked/unlocked using the wireless
remote control. (Locked: Once;
Unlocked: Twice)
Vehicles with a smart key system
A buzzer sounds and the emer-
gency flashers flash to indicate that
the doors have been
locked/unlocked using the entry
function or wireless remote control.
(Locked: Once; Unlocked: Twice)
A buzzer sounds to indicate that the
windows and moon roof
*are operat-
ing.
*: If equipped
■S e c u r i t y f e a t u r e ( w i t h a w i r e l e s s
remote control function)
Vehicles without a smart key sys-
tem
If a door is not opened within
approximately 60 seconds after the
vehicle is unlocked using the wire-
less remote control, the security fea-
ture automatically locks the vehicle
again.
Vehicles with a smart key system
If a door is not opened within
approximately 60 seconds after the
vehicle is unlocked using the entry
function or wireless remote control,
the security featu re automatically
locks the vehicle again.
■When the door cannot be
locked by the lock sensor on
the surface of the front door
handle (vehicles with a smart
key system)
If the doors cannot be locked by
touching the lock se nsor with a fin-
ger, touch the lock sensor with the
palm of your hand.
If you are wearing gloves, remove
them.
■Door lock buzzer (vehicles with
a smart key system)
If an attempt to lock the doors using
the entry function or wireless remote
control is made when a door is not
fully closed, a b uzzer will sound
continuously for 5 seconds. Fully
close the door to stop the buzzer,
and lock the doors again.
■Alarm (if equipped)
Locking the doors will set the alarm
system. ( P. 7 8 )
■Conditions affecting the opera-
tion of the smart key system or
wireless remote control (if
equipped)
Vehicles without a smart key sys-
tem
 P.109
Vehicles with a smart key system
 P.121

1173-2. Opening, closing and locking the doors
3
Before driving
Tr unk
The trunk can be opened
using the trunk opener,
entry function or wireless
remote control or key.
WARNING
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
■Before driving
●Make sure that the trunk lid is
fully closed. If the trunk lid is not
fully closed, it may open unex-
pectedly while driving and hit
near-by objects or luggage in
the trunk may be thrown out,
causing an accident.
●Do not allow child ren to play in
the trunk.
If a child is accidentally locked
in the trunk, they could suffer
from heat exhaustion, suffoca-
tion or other injuries.
●Do not allow a child to open or
close the trunk lid.
Doing so may cause the trunk
lid to open unexpectedly, or
cause the child’s hands, head,
or neck to be caught by the
closing trunk lid.
■Important points while driving
Never let anyone sit in the trunk.
In the event of sudden braking or
a collision, they are susceptible to
death or serious injury.
■Using the trunk
Observe the following precau-
tions.
Failure to do so may cause parts
of the body to be caught, resulting
in serious injury.
●Remove any heavy loads, such
as snow and ice, from the trunk
lid before openin g it. Failure to
do so may cause the trunk lid to
suddenly shut again after it is
opened.
●When opening or closing the
trunk lid, thoroughly check to
make sure the surrounding area
is safe.
●If anyone is in the vicinity, make
sure they are safe and let them
know that the trunk is about to
open or close.
●Use caution when opening or
closing the trunk lid in windy
weather as it may move
abruptly in strong wind.
●The trunk lid may suddenly shut
if it is not opened fully. It is more
difficult to ope n or close the
trunk lid on an incline than on a
level surface, so beware of the
trunk lid unexpectedly opening
or closing by itself. Make sure
that the trunk lid is fully open
and secure before using the
trunk.
●When closing the trunk lid, take
extra care to pre vent your fin-
gers etc. from being caught.

1233-2. Opening, closing and locking the doors
3
Before driving
the door handle, such as in the
rain or in a car wash when the
electronic key is within the effec-
tive range. (The doors will auto-
matically be locked after
approximately 60 seconds if the
doors are not opened and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possib ility that the door
may not be unlocke d by the entry
function. (Use the wireless remote
control to unloc k the doors.)
●If the doors have been locked
from outside of the vehicle and are
then not unlocked using the wire-
less remote contr ol or smart key
system, the engine cannot be
started using the smart key sys-
tem. (However, if the doors have
been locked from inside the vehi-
cle, the engine can be started
using the smart key system.)
If it is necessary to start the
engine, it can be started using the
procedure in “If the electronic key
dose not operate properly”
(  P.382).
●Touching the door lock or unlock
sensor while wearing gloves may
prevent lock or unlock operation.
●When the lock op eration is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recogniti on signals will be
given.
●If the door handle becomes wet
while the electronic key is within
the effective ran ge, the door may
lock and unlock repeatedly. In that
case, follow the fo llowing correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca- tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to bat-
tery-saving mode to disable the
smart key system. ( P.121)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-information display and a
buzzer will sound outside the vehi-
cle. To turn off the alarm, lock all
the doors.
●The lock sensor may not work
properly if it comes into contact
with ice, snow, mud, etc. Clean
the lock sensor and attempt to
operate it again.
●A sudden handle operation or a
handle operation immediately
after entering the effective range
may prevent the doors from being
unlocked. Touch the door unlock
sensor and check that the doors
are unlocked befo re pulling the
door handle again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●To prevent theft of the vehicle, do
not leave the electronic key within
6 ft. (2 m) of the vehicle.
●The smart key system can be
deactivated in advance. ( P.412)
●Setting the electronic key to bat-
tery-saving mode helps to reduce
key battery depletion. ( P.121)
■To operate the system properly
●Make sure to carry the electronic
key when operating the system.
Do not get the electronic key too
close to the vehicle when operat-
ing the system from the outside of
the vehicle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention function m ay not operate.)

1273-3. Adjusting the seats
3
Before driving
WARNING
●Do not allow anyone to sit on a
folded seatback or in the trunk
while driving.
●Do not allow child ren to enter
the trunk.
●Be careful not to get your hand
caught when folding the rear
seatbacks.
●Adjust the position of the front
seats before folding down the
rear seatbacks so that the front
seats do not interfere with the
rear seatbacks when folding
down the rear seatbacks.
■After returning the rear seat-
back to the upright position
●Make sure that the seatback is
securely locked in position by
lightly pushing it back and forth.
If the seatback is not securely
locked, the red marking will be
visible on the seatback lock
release button. Make sure that the
red marking is not visible.
●Check that the seat belts are
not twisted or caught in the
seatback.
If the seat belt gets caught
between the seatback’s securing
hook and latch, it may damage
the seat belt.
NOTICE
■When the right seatback is
folded down
Make sure the luggage loaded in
the enlarged trunk will not dam-
age the webbing of the rear cen-
ter seat belt.

1303-4. Adjusting the steering wheel and mirrors
3-4.Adjusting the steering wheel and mirrors
1Hold the steering wheel and
push the lever down.
2 Adjust to the ideal position by
moving the steering wheel
horizontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
Steering wheel
Adjustment procedure
WARNING
■Caution while driving
Do not adjust the steering wheel
while driving.
Doing so may cause the driver to
mishandle the vehicle and cause
an accident, resul ting in death or
serious injury.
■After adjusting the steering
wheel
Make sure that the steering wheel
is securely locked.
Otherwise, the steering wheel
may move suddenly, possibly
causing an accident, and resulting
in death or serious injury. Also,
the horn may not sound if the
steering wheel is not securely
locked.
Horn

1464-1. Before driving
WARNING
●Do not shift the shift lever to P
while the vehicle is moving.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the shift lever to R
while the vehicle is moving for-
ward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the shift lever to a
driving position while the vehicle
is moving backward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Moving the shift lever to N while
the vehicle is moving will disen-
gage the engine from the trans-
mission. Engine braking is not
available when N is selected.
●Be careful not to shift the shift
lever with the accelerator pedal
depressed. Shifting the shift
lever to any positions other than
P or N may lead to unexpected
rapid acceleration of the vehicle
that may cause an accident and
result in death or serious injury.
■If you hear a squealing or
scraping noise (brake pad
wear indicators)
Have the brake pads checked and
replaced by your Toyota dealer as
soon as possible.
Rotor damage may result if the
pads are not replaced when
needed.
It is dangerous to drive the vehicle
when the wear limits of the brake
pads and/or those of the brake
discs are exceeded.
■When the vehicle is stopped
●Do not race the engine.
If the vehicle is in any gear other
than P or N, the vehicle may
accelerate suddenly and unex-
pectedly, causing an accident.
●In order to prevent accidents
due to the vehic le rolling away,
always keep depressing the
brake pedal while the engine is
running, and apply the parking
brake as necessary.
●If the vehicle is stopped on an
incline, in order to prevent acci-
dents caused by the vehicle roll-
ing forward or backward, always
depress the brake pedal and
securely apply the parking
brake as needed.
●Avoid revving or racing the
engine.
Running the engine at high
speed while the vehicle is
stopped may cause the exhaust
system to overheat, which could
result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette
lighters, spray cans, or soft
drink cans in the vehicle when it
is in the sun.
Doing so may result in the fol-
lowing:
• Gas may leak from a cigarette lighter or spray can, and may
lead to a fire.
• The temperature inside the vehicle may cause the plastic
lenses and plastic material of
glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray
over the interior of the vehicle,
and may also cause a short cir-
cuit in the vehicle’s electrical
components.