2012 TOYOTA COROLLA warning

381
4-3. Do-it-yourself maintenance
4
Maintenance and care
■When replacing wheels
The wheels of your Toyota, except for the compact spare tire, are
equipped with tire pressure warning valves and transmitters that allow
the tire pressure warning system to provide advanced warning in the
event of a loss in tire inflation pressure. Whenever wheels are replaced,
the tire pressure warning valves a
nd transmitters must be installed.
(  P. 369)
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may re sult in loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or seri-
ous injury.
■When installing the wheel nuts
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Be sure to install the wheel nuts with
the tapered ends facing inward.
Installing the nuts with the tapered
ends facing outward can cause the
wheel to break and eventually cause
the wheel to come off while driving,
which could lead to an accident
resulting in death or serious injury.
Tapered
portion

382 4-3. Do-it-yourself maintenance
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitters, make sure to have tires serviced by your
Toyota dealer or other qualified service shop. In addition, make sure to
purchase your tire pressure warning valves and transmitters at your
Toyota dealer.
●Ensure that only genuine Toyota wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.

397
4-3. Do-it-yourself maintenance
4
Maintenance and care
14 POWER
30 A Power windows
15 SEAT HTR 15 A Seat heater
16 HTR-IG 10 A Air conditioning system
17 WIPER 25 A Windshield wipers
18 WASHER 15 A Windshield washer
19 ECU-IG NO. 1 10 A Automatic transmission, main body
ECU, electric power steering, elec-
tric cooling fan(s), shift lock control
system, anti-lock brake system, tire
pressure warning system, vehicle
stability control system, cruise con-
trol system
20 ECU-IG NO. 2 10 A Back-up lights, charging system,
rear window defogger, air condi-
tioning system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, moon roof
21 OBD 7.5 A On-board diagnosis system
22 STOP 10 AStop lights, high mounted stop-
light, anti-lock brake system, main
body ECU, multiport fuel injection
system/sequential multiport fuel
injection system, shift lock control
system, vehicle stability control
system
23 DOOR 25 A Power door lock system
24 ACC-B 25 A CIG, ACC
25 FR FOG 15 A Front fog lights
26 AM1 7.5 A Starting system, ACC, CIG
FuseAmpereCircuit

When trouble arises5
411
5-1. Essential informationEmergency flashers ......... 412
If your vehicle needs to be towed ........................ 413
If you think something is wrong ............................. 418
Fuel pump shut off system ........................... 419 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 420
If you have a flat tire......... 432
If the engine will not start ................................ 444
If the shift lever cannot be shifted from P............ 446
If you lose your keys ........ 447
If the electronic key does not operate properly....... 448
If the battery is discharged ..................... 450
If your vehicle overheats ....................... 456
If the vehicle becomes stuck .............................. 459
If your vehicle has to be stopped in an
emergency ..................... 461

420
5-2. Steps to take in an emergency
If a war ning light tur ns on or a war ning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicle in a safe place and contact your
Toyota dealer.
*: Parking brake engaged warning buzzer: The buzzer sounds to indicate that the parking brake is still engaged (with the vehicle having reached a speed
of 3 mph [5 km/h]).
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
Calmly perform the following actions if any of the warning lights turn
on or flash. If a light turns on or flashes, but then turns off, this does
not necessarily indicate a malfunction in the system.

5
When trouble arises
421
5-2. Steps to take in an emergency
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system (if
equipped).
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
•ABS; or
• The brake assist system.
Electric power steering warning light (warning buzzer)
Indicates a malfunction in the EPS system.
Slip indicator light
Indicates a malfunction in:
• The VSC system; or
• The TRAC system.
(Flashes) Cruise control indicator light (if equipped)
Indicates a malfunction in the cruise control system.

422 5-2. Steps to take in an emergency
Follow the correction procedures.After taking the specified steps to correct the suspected problem,
check that the warning light turns off.
■ If the malfunction indicator lamp comes on while driving
First check the following:
● Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after taking several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
CAUTION
■ When the electric power steering warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, firmly
hold and operate it using more force than usual.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
Indicates that a door or the
trunk is not fully closed. Check that all doors and the
trunk are closed.
Low fuel level warning
light Indicates that remaining
fuel is about 2.0 gal. (7.5
L, 1.7 Imp. gal.) or less Refuel the vehicle.

5
When trouble arises
423
5-2. Steps to take in an emergency
(on the instru-
ment cluster) Driver’s seat belt
reminder light
(warning buzzer)*2
Warns the driver to fasten
his/her seat belt.
Fasten the seat belt.
(on the center panel) Front passenger’s seat
belt reminder light
(warning buzzer)
*2
Warns the front passen-
ger to fasten his or her
seat belt.
Fasten the seat belt.
(Canada) Low windshield washer
fluid level warning light
Low level of washer fluid Fill the tank.
(U.S.A.) Maintenance required
reminder light
Indicates that mainte-
nance is required accord-
ing to the driven distance
on the maintenance
schedule.
*3
Illuminates for about 3 sec-
onds and then flashes for
about 15 seconds approxi-
mately 4500 miles (7200
km) after the maintenance
data has been reset. If necessary, perform main-
tenance.
Comes on and remains on if
the distance driven exceeds
5000 miles (8000 km) after
the maintenance data has
been reset.
(The indicator will not work
properly unless the mainte-
nance data has been reset.) Perform the necessary
maintenance.
Please reset the mainte-
nance data after the mainte-
nance is performed.
(
P. 340)
Warning lightWarning light/DetailsCorrection procedure