2022 TOYOTA COROLLA ECU

4607-3. Do-it-yourself maintenance
WA R N I N G
■Replacing light bulbs
●Turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights. The bulbs
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 bulbs and any
parts used to secure them. Failure
to do so may result in heat damage, fire, or water entering the light unit.
This may damage the lights or
cause condensation to build up on the lens.
■To prevent damage or fire
Make sure bulbs are fully seated and
locked.

463
8
8-1. Essential information
When trouble arises
turning the engine switch to
ACC.
4 Vehicles with a smart entry &
start system: To stop the engine,
press and hold the engine
switch for 2 consecutive sec-
onds or more, or press it briefly
3 times or more in succession.
5 Stop the vehicle in a safe place
by the road.
WA R N I N G
■If the engine has to be turned off while driving
●Power assist for the brakes and
steering wheel will be lost, making the brake pedal harder to depress
and the steering wheel heavier to
turn. Decelerate as much as possi- ble before turning off the engine.
●Vehicles without a smart entry & start system: Never attempt to
remove the key, as doing so will
lock the steering wheel.

467
8
8-2. Steps to take in an emergency
When trouble arises
strapping belts.
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 80 km (50 miles) at
under 30 km/h (18 mph).
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.
For vehicles with a Multidrive, only
the front towing eyelet may be
used.
To have your vehicle towed by
another vehicle, the towing eyelet
must be installed to your vehicle.
Install the towing eyelet using the
following procedure.
1 Take out the wheel nut wrench
(if equipped) and towing eyelet.
( P.484, 499)
2 Remove the eyelet cover using
a flathead screwdriver.
To protect the bodywork, place a rag
between the screwdriver and the vehi- cle body as shown in the illustration.
3 Insert the towing eyelet into the
hole and tighten partially by
hand.
4 Tighten down the towing eyelet
securely using a wheel nut
wrench or hard metal bar.
NOTICE
■Using a flatbed truck
Do not overly tighten the tie downs or the vehicle may be damaged.
Emergency towing
Emergency towing proce-
dure

4688-2. Steps to take in an emergency
5Securely attach cables or chains
to the towing eyelet.
Take care not to damage the vehicle
body.
6 Enter the vehicle being towed
and start the engine.
If the engine does not start, turn the
engine switch to ON.
7 Shift the shift lever to N and
release the parking brake.
Vehicles with electric parking brake:
Turn automatic mode off. P. 1 7 4
When the shift lever cannot be shifted
(vehicles with a Multidrive): P. 1 6 6
■While towing
If the engine is not running, the power
assist for the brakes and steering will
not function, making steering and brak- ing more difficult.
■Wheel nut wrench
Vehicles with wheel nut wrench: Wheel
nut wrench is installed in trunk. ( P.482, 498)
WA R N I N G
Observe the following precautions.
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, bro-
ken debris may hit people, and cause serious damage.
●Vehicles without smart entry & start system: Do not tu rn the engine
switch to the “LOCK” position.
There is a possibility that the steer-
ing wheel is locked and cannot be operated.
●Vehicles with smart entry & start system: Do not turn the engine
switch off.
There is a possibility that the steer- ing wheel is locked and cannot be
operated.
■Installing towing eyelets to the
vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eye-
lets 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.

4968-2. Steps to take in an emergency
2 Check that the air pressure indicator
shows the specified air pressure.
If the air pressure is under the desig-
nated pressure, turn the compressor
switch on (type A) or (on) (type B)
again and repeat the inflation procedure
until the specified air pressure is
reached.
■After a tire is repaired with the emergency tire puncture repair kit
●The tire pressure warning valve and transmitter should be replaced.
●Even if the tire inflation pressure is at the recommended level, the tire pres-
sure warning light may come on/flash.
WA R N I N G
■Do not drive the vehicle with a
flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a
flat tire can damage the tire and the wheel beyond repair.
Driving with a flat tire may cause a cir-
cumferential groove on the side wall. In such a case, t he tire may explode
when using a repair kit.
■When fixing the flat tire
●Stop your vehicle in a safe and flat
area.
●Do not touch the wheels or the area
around the brakes immediately after the vehicle has been driven.
After the vehicle has been driven,
the wheels and the area around the brakes may be extremely hot.
Touching these areas with hands,
feet or other body parts may result in burns.
●Connect the valve and hose securely with the tire installed on
the vehicle. If the hose is not prop-
erly connected to the valve, air leakage may occur as sealant may
be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk
that the hose will move abruptly due
to air pressure.
●After inflation of the tire has com-
pleted, the sealant may splatter when the hose is disconnected or
some air is let out of the tire.
●Follow the operation procedure to
repair the tire. If the procedures not
followed, the sealant may spray out.
●Keep back from the tire while it is
being repaired, as there is a chance of it bursting while the repair opera-
tion is being performed. If you
notice any cracks or deformation of
the tire, turn off (type A) or (off)
(type B) the compressor switch and
stop the repair operation immedi- ately.
●The repair kit may overheat if oper-ated for a long period of time. Do
not operate the repair kit continu-
ously for more than 40 minutes.
●Parts of the repair kit become hot
during operation. Be careful when handling the repair kit during and
after operation. Do not touch the
metal part around the connecting area between the bottle and com-
pressor. It will be extremely hot.
●Do not attach the vehicle speed
warning sticker to an area other
than the one indicated. If the sticker is attached to an area where an
SRS airbag is located, such as the
pad of the steering wheel, it may
prevent the SRS airbag from oper- ating properly.

5028-2. Steps to take in an emergency
1Remove the deck mat. (P.501)
2 Remove the tool tray.
Vehicles with a compact spare tire:
Vehicles with a full-size spare tire:
3 Loosen the center fastener that
secures the spare tire.
1 Chock the tires.
2 Vehicles with a steel wheel:
Remove the wheel ornament (if
equipped) using the wrench.
To protect the wheel ornament, place a
rag between the wrench and the wheel
Taking out the spare tireWA R N I N G
■When storing the spare tire
Be careful not to catch fingers or
other body parts between the spare tire and the body of the vehicle.
Replacing a flat tire
Flat tireWheel chock posi-
tions
Front left-hand
side
Behind the rear
right-hand side tire
Front right-hand
side
Behind the rear
left-hand side tire
Rear left-hand sideIn front of the front
right-hand side tire
Rear right-hand
side
In front of the front
left-hand side tire

5088-2. Steps to take in an emergency
WA R N I N G
■When using the full-size spare
tire
●Replace the full-size spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden
engine braking.
■When using the compact spare
tire
●Remember that the compact spare tire provided is specifically
designed for use with your vehicle.
Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tires simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden
engine braking.
■When the compact spare tire is
attached
The vehicle speed may not be cor-
rectly detected, an d the following sys-
tems may not operate correctly:
• ABS & Brake assist
• VSC
•TRC
• Automatic High Beam (if equipped)
• Cruise control (if equipped)
• Dynamic radar cruise control with full-speed range (if equipped)
• Dynamic radar cruise control (if equipped)
• EPS
• PCS (Pre-Collision System) (if equipped)
• LDA (Lane Departure Alert with steering control) (if equipped)
• LTA (Lane Tracing Assist) (if equipped)
• Tire pressure warning system
• Toyota parking assist-sensor (if
equipped)
• PKSB (Parking Support Brake) (if
equipped)
• BSM (Blind Spot Monitor) (if
equipped)
• Rear view monitor system (if
equipped)
• S-IPA (Simple Intelligent Parking
Assist System) (if equipped)
• Navigation system (if equipped)
■Speed limit when using the com-
pact spare tire
Do not drive at speeds in excess of 80 km/h (50 mph) when a compact spare
tire is installed on the vehicle.
The compact spare tire is not
designed for driving at high speeds.
Failure to observe this precaution may lead to an accident causing
death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their storage location to reduce the possi-
bility of personal injury during a colli-
sion or sudden braking.

5168-2. Steps to take in an emergency
moving parts as shown in the illustration
5 Start the engine of the second
vehicle. Increase the engine
speed slightly and maintain at
that level for approximately 5
minutes to recharge the battery
of your vehicle.
6 Vehicles with a smart entry &
start system: Open and close
any of the doors of your vehicle
with the engine switch OFF.
7 Maintain the engine speed of
the second vehicle and start the
engine of your vehicle by turning
the engine switch to ON.
8 Once the vehicle’s engine has
started, remove the jumper
cables in the exact reverse
order from which they were con-
nected.
9 1ZR-FAE engine: Reinstall the
engine cover.
9 M15A-FKS engine: Reinstall the
positive (+) battery terminal
cover.
Once the engine starts, have the
vehicle inspected at any author-
ized Toyota reta iler or Toyota
authorized repairer, or any reliable
repairer as soon as possible.
■Starting the engine when the bat- tery is discharged
The engine cannot be started by
push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio
system while the engine is off.
●Turn off any unnecessary electrical
components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■When the battery is removed or dis-
charged
●Information stored in the ECU is
cleared. When the battery is depleted,
have the vehicle inspected at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
●Some systems may require initializa-
tion. ( P.547)
■When removing the battery termi- nals
When the battery terminals are
removed, the information stored in the ECU is cleared. Before removing the
battery terminals, contact any author-
ized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Charging the battery
The electricity stored in the battery will
discharge gradually even when the vehi- cle is not in use, due to natural dis-
charge and the draining effects of
certain electrical appliances. If the vehi- cle is left for a long time, the battery may
discharge, and the engine may be una-
ble to start. (The battery recharges auto- matically during driving.)
■When recharging or replacing the
battery (vehicles with a smart entry
& start system)
●Vehicles with entry function: In some
cases, it may not be possible to unlock the doors using the smart entry
& start system when the battery is dis-
charged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has
recharged but will start normally after
the second attempt. This is not a mal- function.