2012 TOYOTA MATRIX warning light

369
4-3. Do-it-yourself maintenance
4
Maintenance and care
■When the initialization of the tire pressure warning system has
failed
Initialization can be completed in a few minutes. However, in the follow-
ing cases, the settings have not b
een recorded and the system will not
operate properly. If repeated attempts to record tire inflation pressure
settings are unsuccessful, have the vehicle inspected by your Toyota
dealer.
●When operating the tire pressure warning reset switch, the tire pres-
sure warning light doe s not blink 3 times.
●After carrying out the initialization procedure, the tire pressure warn-
ing light blinks for 1 minute then stays on after driving for about 20
minutes.
■Routine tire inflation pressure checks
The tire pressure warning system doe s not replace routine tire inflation
pressure checks. Make su re to check tire inflation pressure as part of
your routine of daily vehicle checks.
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1/2
of the Gross Axle Weight Ratings (GAW R) of either the front axle or the
rear axle, whichever is greater.
■Low profile tires (models not equipped with 16-inch tires)
Generally, low profile tire s will wear more rapidly and tire grip perfor-
mance will be reduced on snowy and/or icy roads when compared to
standard tires. Be sure to use snow tires or tire chains
* on snowy and/or
icy roads and drive carefully at a speed appropriate for road and weather
conditions.
*: Tire chains cannot be mounted on 18-inch tires.
For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum cold
tire inflation pressure mentioned on the
sidewall of the tire. ( P. 473)

372 4-3. Do-it-yourself maintenance
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so
may cause damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or
serious injury.
● Do not mix tires of different makes, models or tread patterns. Also, do not
mix tires of remarkably different treadwear.
●
Do not use tire sizes other than those recommended by Toyota.
● Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
●
Do not mix summer, all season and winter tires.
■When initializing the tire pressure warning system
Do not push the tire pressure warnin g reset switch without first adjusting
the tire inflation pressure to the spec ified level. Otherwise, the tire pres-
sure warning light may not come on ev en if the tire inflation pressure is
low, or it may come on when the tire inflation pressure is actually normal.

392 4-3. Do-it-yourself maintenance
11 IGN7.5 ASRS airbag system, multiport fuel
injection system/sequential multi-
port fuel injection system, front
passenger occupant classification
system
12 METER 7.5 A Gauge and meters
13 HTR-IG 10 AAir conditioning system, rear win-
dow defogger, PTC heater
14 WIPER 25 A Windshield wipers
15 RR WIPER 15 A Rear window wiper
16 WASHER 15 A Windshield washer
17 ECU-IG NO. 1 10 A Main body ECU, electric power
steering, electric cooling fan(s),
shift lock control system, anti-lock
brake system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, tire pressure
warning system, vehicle stability
control system, all wheel drive sys-
tem
18 ECU-IG NO. 2 10 A Back-up lights, charging system,
rear window defogger, auto anti-
glare inside rear view mirror
19 OBD 7.5 A On-board diagnosis system
20 STOP 10 AStop lights, high mounted stop-
light, anti-lock brake system, vehi-
cle stability control system,
multiport fuel injection system/
sequential multiport fuel injection
system, shift lock control system
21 DOOR 25 A Power door lock system
22 ACC-B 25 A CIG, ACC
23 4WD 7.5 A All wheel drive system
FuseAmpereCircuit

When trouble arises5
403
5-1. Essential informationEmergency flashers ......... 404
If your vehicle needs to be towed ........................ 405
If you think something is wrong ............................ 411
Fuel pump shut off system ........................... 412 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 413
If you have a flat tire......... 424
If the engine will not start ................................ 438
If the shift lever cannot be shifted from P................. 439
If you lose your keys ........ 440
If the battery is discharged ..................... 441
If your vehicle overheats ....................... 446
If the vehicle becomes stuck .............................. 449
If your vehicle has to be stopped in an
emergency ..................... 451

5
When trouble arises
413
5-2. Steps to take in an emergency
If a war ning light turns 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]).
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.
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.

414 5-2. Steps to take in an emergency
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.
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
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.
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.

5
When trouble arises
415
5-2. Steps to take in an emergency
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
•ABS; or
• The brake assist system.
Electric power steering system 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.
(AWD models) Active Torque Control 4WD system warning light
Indicates a malfunction in the Active Torque Control 4WD
system.
■ 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.
Warning lightWarning light/Details

416 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.
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 is not
fully closed. Check that all doors are
closed.
Low fuel level warning
light Indicates that remaining
fuel is about 2.0 gal. (7.5
L, 1.6 Imp. gal.) or less. Refuel the vehicle.
(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.