check engine TOYOTA COROLLA 2023 User Guide

902-1. Instrument cluster
Display change button (P.90)
■Outside temperature display
●In the following situations, the cor-
rect outside tempe rature may not
be displayed, or the display may
take longer than normal to
change:
• When stopped, or driving at low
speeds (less than 12 mph [20
km/h])
• When the outside temperature
has changed suddenly (at the
entrance/exit of a garage, tunnel,
etc.)
●When “--” or “E” is displayed, the
system may be malfunctioning.
Take your vehicle to your Toyota
dealer.
■Liquid crystal display
 P. 9 7
■Customization
The gauges and meters can be cus-
tomized in of the multi-informa-
tion display. ( P.412)■Changing the display
Press the display change button
until the desired item is dis-
played.
■Display items
 Odometer
Displays the total distance the vehi-
cle has been driven.
 Trip meter A/Trip meter B
Displays the distance the vehicle
has been driven since the meter
was last reset. Trip meters A and B
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before u sing the liquid
crystal informat ion display. At
extremely low temperatures, the
information display monitor may
respond slowly, and display
changes may be delayed.
For example, there is a lag
between the driver’s shifting and
the new gear number appearing
on the display. This lag could
cause the driver to downshift
again, causing rapid and exces-
sive engine braking and possibly
an accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
●Do not let the indicator needle
of the tachometer enter the red
zone, which indicates the maxi-
mum engine speed.
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.387)
Odometer and trip meter
display

1073-1. Key information
3
Before driving
• The wireless remote control does not operate.
• The detection area becomes
smaller.
Vehicles with a smart key system
●The standard battery life is 1 to 2
years.
●If the battery becomes low, an
alarm will sound in the cabin and a
message will be shown on the
multi-information display when the
engine is stopped.
●To reduce key battery depletion
when the electronic key is to not
be used for long periods of time,
set the electronic key to the bat-
tery-saving mode. ( P.121)
●As the electronic key always
receives radio waves, the battery
will become depleted even if the
electronic key is not used. The fol-
lowing symptoms indicate that the
electronic key battery may be
depleted. Replace the battery
when necessary. ( P.333)
• The smart key system or the wire- less remote control does not oper-
ate.
• The detection area becomes smaller.
• The LED indicator on the key sur-
face does not turn on.
●To avoid serious deterioration, do
not leave the electronic key within
3 ft. (1 m) of the following electri-
cal appliances t hat produce a
magnetic field:
• TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or
cordless phones
• Table lamps
• Induction cookers
●If the electronic key is near the
vehicle for longer than necessary,
even if the smart key system is not
operated, the key battery may
become depleted faster than nor-
mal.
■Replacing the battery (with a
wireless remote control func-
tion)
 P.333
■The electronic key function is
suspended when (vehicles with
a smart key system)
The electronic key function may be
suspended when the electronic key
is kept unmoved in a same location
for a certain period, such as it is left
on a same place. This is to reduce
battery consumption. The function
will be restored automatically when
the electronic key is moved, such as
it is picked up.
■If “A New Key has been Regis-
tered Contact Your Dealer for
Details” is shown on the
multi-information display (vehi-
cles with a smart key system)
This message will be displayed
each time the driver’s door is
opened when the doors are
unlocked from the outside for
approximately 10 days after a new
electronic key has been registered.
If this message is displayed but you
have not had a new electronic key
registered, ask your Toyota dealer to
check if an unknown electronic key
(other than those in your posses-
sion) has been registered.
■If a wrong key is used (with a
wireless remote control func-
tion)
The key cylinder rotates freely, iso-
lated from the internal mechanism.
NOTICE
■To prevent key damage
●Do not drop the keys, subject
them to strong shocks or bend
them.
●Do not expose the keys to high
temperatures for long periods of
time.

1143-2. Opening, closing and locking the doors
■If the smart key system or the
wireless remote control does
not operate properly (if
equipped)
Vehicles without a smart key sys-
tem
Replace the key battery with a new
one if it is depleted. ( P.333)
Vehicles with a smart key system
Use the mechanical key to lock and
unlock the doors. ( P.381)
Replace the key battery with a new
one if it is depleted. ( P.333)
■If the battery is discharged
(vehicles with a smart key sys-
tem)
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.382)
■Rear seat reminder function
In order to remind you not to forget
luggage, etc. in the rear seat, when
the engine switch is turned off after
any of the following conditions are
met, a buzzer will sound and a mes-
sage will be displayed on the
multi-information di splay for approx-
imately 6 seconds.
●The engine is started within
approximately 10 minutes after
opening and closing a rear door.
●A rear door has been opened and
closed after the engine was
started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds , the rear seat
reminder function may not operate.
The rear seat rem inder function
determines that luggage, etc. has
been placed in a rear seat based on
opening and closing of a rear door.
Therefore, depending on the situa-
tion, the rear seat reminder function
may not operate and you may still
forget luggage, etc. in the rear seat,
or it may operate unnecessarily.
■Customization
Some functions can be customized.
(  P.412)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
being thrown out o f the vehicle,
resulting in death o r serious injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside door han-
dle while driving.
Be especially careful of the front
doors, as the doors may be
opened even if the inside lock
buttons are in the locked posi-
tion.
●Set the rear door child-protector
locks when children are seated
in the rear seats.
■When opening or closing a
door
Check the surroundings of the
vehicle such as wh ether the vehi-
cle is on an incline, whether there
is enough space for a door to
open and whether a strong wind
is blowing. When opening or clos-
ing the door, hold the door handle
tightly to prepare for any unpre-
dictable movement.

1193-2. Opening, closing and locking the doors
3
Before driving
■Key (vehicles with a key
cylinder on the trunk lid)
Turn the key clockwise to
release the trunk lid.
■Trunk light
●The trunk light turns on when the
trunk is opened.
●If the trunk light is left on when the
engine switch is turned off, the
light will go off aut omatically after
20 minutes.
■Function to prevent the trunk
being locked with the electronic
key inside (vehicles with a
smart key system)
●When all doors are locked, closing
the trunk lid with the electronic key
left inside the tr unk will sound an
alarm.
In this case, the trunk lid can be
opened pressing the trunk release
button on the trunk lid.
●If the spare electronic key is put in
the trunk with all the doors locked,
the key confinement prevention
function is activated so the trunk
can be opened. In order to pre-
vent theft, take all electronic keys
with you when leaving the vehicle.
●If the electronic key is put in the
trunk with all the doors locked, the
key may not be detected depend-
ing on the location of the key and
the surrounding radio wave condi-
tions. In this case, the key con-
finement prevention function
cannot be activate d, causing the doors to lock when the trunk is
closed. Make sure to check where
the key is before closing the trunk.
●The key confinement prevention
function cannot be activated if any
one of the doors i
s unlocked. In
this case, open the trunk using the
trunk opener.
■Internal trunk release lever
The trunk lid can b e opened by pull-
ing up the glow-in-the-dark lever
located on the inside of the trunk lid.
The lever will contin ue to glow for
some time after the trunk lid is
closed.
■If the smart key system or the
wireless remote control does
not operate properly (if
equipped)
Replace the key battery with a new
one if it is depleted. ( P.333)
■Open door warning buzzer
 P. 1 1 6
■Customization
Some functions can be customized.
(  P.412)

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.)

1353-5. Opening and closing the windows
3
Before driving
pushing the switch in the
one-touch opening direction, and
hold it there for approximately 4
seconds or more.
6 Pull and hold the power window
switch in the one-touch closing
direction again. After the door
window is completely closed,
continue holding the switch for a
further 1 second or more.
If you release the switch while the
window is moving, start again from
the beginning.
If the window reverses and cannot
be fully closed or opened, have the
vehicle inspected by your Toyota
dealer.
■Door lock linked window opera-
tion
●Vehicles without a smart key sys-
tem: The power windows can be
opened and closed using the key.
*
(  P.112)
Vehicles with a smart key system:
The power windows can be
opened and closed using the
mechanical key.
* (  P.382)
●The power windows can be
opened using the wireless remote
control.
* (with a wireless remote
control function) ( P. 1 1 1 )
*: These settings must be custom-
ized at your Toyota dealer.
■Customization
Some functions can be customized.
(  P.412)
WARNING
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
■Closing the windows
●The driver is responsible for all
the power window operations,
including the operation for the
passengers. In order to prevent
accidental operation, especially
by a child, do not let a child
operate the power windows. It is
possible for children and other
passengers to have body parts
caught in the power window.
Also, when ridin g with a child, it
is recommended to use the win-
dow lock switch. (
P.136)
●Check to make sure that all pas-
sengers do not have any part of
their body in a pos ition where it
could be caught when a window
is being operated.
●When using the wireless remote
control (if equipped), key or
mechanical key and operating
the power windows, operate the
power window after checking to
make sure that there is no pos-
sibility of any passenger having
any of their body parts caught in
the window. Also do not let a
child operate window by the
wireless remote control (if
equipped), key or mechanical
key. It is possib le for children
and other passengers to get
caught in the power window.
●When exiting the vehicle, turn
the engine switch off, carry the
key and exit the vehicle along
with the child. There may be
accidental operation, due to
mischief, etc., that may possibly
lead to an accident.

1393-5. Opening and closing the windows
3
Before driving
WARNING
●Check to make sure that all pas-
sengers do not have any part of
their body in a position where it
could be caught when the moon
roof is being operated.
●When using the wireless remote
control or mechanical key and
operating the moon roof, oper-
ate the moon roof after checking
to make sure that there is no
possibility of any passenger
having any of their body parts
caught in the moon roof. Also,
do not let a child operate moon
roof by the wireless remote con-
trol or mechanical key. It is pos-
sible for children and other
passengers to get caught in the
moon roof.
●When exiting the vehicle, turn
the engine switch off, carry the
key and exit the vehicle along
with the child. There may be
accidental operation, due to
mischief, etc., that may possibly
lead to an accident.
■Jam protection function
●Never use any part of your body
to intentionally a ctivate the jam
protection function.
●The jam protection function may
not work if something gets
caught just before the moon
roof is fully closed. Also, the jam
protection function is not
designed to operate while the
moon roof switch is being
pressed. Take care so that your
fingers, etc. do not get caught.

1454-1. Before driving
4
Driving
WARNING
●During normal driving, do not
turn off the engine. Turning the
engine off while driving will not
cause loss of steering or brak-
ing control, but the power assist
to these systems will be lost.
This will make it more difficult to
steer and brake, so you should
pull over and stop the vehicle as
soon as it is safe to do so.
However, in the event of an
emergency, such as if it
becomes impossible to stop the
vehicle in the normal way:
P. 3 4 8
●Use engine braking (shift posi-
tion B*1 or downshift*2) to main-
tain a safe speed when driving
down a steep hill.
Using the brakes continuously
may cause the brakes to over-
heat and lose effectiveness.
(
P.160, 162)
*1: Vehicles without paddle shift
switches
*2: Vehicles with paddle shift switches
●Do not adjust the positions of
the steering wheel, the seat, or
the inside or ou tside rear view
mirrors while driving.
Doing so may result in a loss of
vehicle control.
●Always check that all passen-
gers’ arms, heads or other parts
of their body are not outside the
vehicle.
●Do not drive in excess of the
speed limit. Even if the legal
speed limit permits it, do not
drive over 85 mph (140 km/h)
unless your vehicle has
high-speed capability tires. Driv-
ing over 85 mph (140 km/h)
may result in tire failure, loss of
control and possible injury. Be
sure to consult a tire dealer to
determine whether the tires on
your vehicle are high-speed
capability tires or not before
driving at such speeds.
■When driving on slippery
road surfaces
●Sudden braking, acceleration
and steering may cause tire
slippage and reduce your ability
to control the vehicle.
●Sudden acceleration, engine
braking due to shifting, or
changes in engine speed could
cause the vehicle to skid.
●After driving through a puddle,
lightly depress the brake pedal
to make sure that the brakes
are functioning properly. Wet
brake pads may prevent the
brakes from functioning prop-
erly. If the brakes on only one
side are wet and not functioning
properly, steering control may
be affected.
■When shifting the shift lever
●Do not let the vehicle roll back-
ward while a fo rward driving
position is selected, or roll for-
ward while the shift lever is in R.
Doing so may cause the engine
to stall or lead to poor brake and
steering performance, resulting
in an accident or damage to the
vehicle.

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.

1484-1. Before driving
WARNING
■If the vehicle becomes stuck
Do not spin the wheels exces-
sively when a driven wheel is up
in the air, or the vehicle is stuck in
sand, mud, etc. This may damage
the driveline components or pro-
pel the vehicle forward or back-
ward, causing an accident.
NOTICE
■When driving the vehicle
●Do not depress t he accelerator
and brake pedals at the same
time during drivin g, as this may
restrain the engine output.
●Do not use the accelerator
pedal or depress the accelera-
tor and brake pedals at the
same time to hold the vehicle on
a hill.
■When parking the vehicle
Always set the parking brake and
shift the shift lever to P. Failure to
do so may cause the vehicle to
move or the vehi cle may acceler-
ate suddenly if the accelerator
pedal is accidentally depressed.
■Avoiding damage to vehicle
parts
●Do not turn the steering wheel
fully in either direction and hold
it there for an extended period
of time.
Doing so may damage the
power steering.
●When driving over bumps in the
road, drive as slowly as possible
to avoid damagi ng the wheels,
underside of the vehicle, etc.
●For APEX models: APEX vehi-
cle height is lower than other
vehicle grades.
Driving over rough or damaged
road surfaces, as well as park-
ing blocks, curbs, and other
obstacles may cause damage
to the underside of your vehicle.
Drive carefully under rough con-
ditions to avoid damage.
■If you get a flat tire while driv-
ing
A flat or damaged tire may cause
the following situations. Hold the
steering wheel firmly and gradu-
ally depress the brake pedal to
slow down the vehicle.
●It may be difficult to control your
vehicle.
●The vehicle will make abnormal
sounds or vibrations.
●The vehicle will lean abnor-
mally.
Information on what to do in case
of a flat tire (
P.370)
■When encountering flooded
roads
Do not drive on a road that has
flooded after h eavy rain etc.
Doing so may cause the following
serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by
water immersion
In the event that you drive on a
flooded road and the vehicle
becomes flooded or stuck in mud
or sand, be sure to have your Toy-
ota dealer check the following:
●Brake function