2012 TOYOTA YARIS Owners Manual

5
When trouble arises
305
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 warnings indicate 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
(except Canada) (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 nor-
mally.
Calmly perform the following actio ns if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then goes
off, this does not necessarily indi cate a malfunction in the system.
However, if this continues to o ccur, have the vehicle inspected by
your Toyota dealer.

306 5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warnings indicate 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.Failure 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 sys-
tem.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
(Flashes or comes on) High engine coolant temperature warning light
Indicates that the engine is almost overheating.
(P. 334)
Warning lightWarning light/Details
(except Canada) (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.
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
307
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 goes off.
(except Canada)
(Canada) ABS warning light
Indicates a malfunction in:
• The ABS; or
• The Brake assist system.
Electric power steering syst em warning light (warn-
ing buzzer) Indicates a malfunction in the EPS system.
Slip indicator light Indicates a malfunction in:
• VSC system; or
• TRAC system.
(Flashes) Cruise control indicator light (if equipped)
Indicates a malfunction in the cruise control system.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
Indicates that a door is
not fully closed. Check that all the doors
are closed.
Low fuel level warning
light Indicates remaining fuel is
approximately 1.7 gal.
(6.3 L, 1.4 Imp.gal.) or
less. Refuel the vehicle.
Warning lightWarning light/Details

308 5-2. Steps to take in an emergency
Driver’s and front pas-
senger’s seat belt
reminder light
(warning buzzer)
*2
Warns the driver and front
passenger to fasten their
seat belts.Fasten the seat belt.
(except Canada)Tire pressure warning
light
When the light comes on:
Low tire inflation pressure
such as
• Natural causes (
P. 311)
• Flat tire ( P. 315) Adjust the tire inflation
pressure to the specified
level.
The light will turn off
after a few minutes. In
case the light does not
turn off even if the tire
inflation pressure is
adjusted, have the
system checked by
your Toyota dealer.
When the light comes on
after blinking for 1 minute:
Malfunction in the tire
pressure warning system.
(  P. 312) Have the system
checked by your Toyota
dealer.
(if equipped)
Low windshield washer
fluid warning light
Low level of washer fluid Fill the tank.
Warning lightWarning light/DetailsCorrection procedure

5
When trouble arises
309
5-2. Steps to take in an emergency
*1: Open door warning buzzer:
A buzzer will sound if the vehicle reaches a speed of 3 mph (5 km/h) or more
with any door open.
*2: Driver’s and front passenger’s seat belt buzzer:The driver’s and front passenger’s seat belt buzzer sounds to alert the driver
and front passenger that their seat belt is not fastened. Once the engine
switch is turned to the “ON” or “START” position, the buzzer sounds for 6
seconds. The buzzer sounds once if the driver’s or front passenger’s seat
belt is unfastened when the vehicle reaches a speed of 12 mph (20 km/h).
Then, if the seat belt is still unfastened after 30 seconds elapse, the buzzer
will sound intermittently for approximately 10 seconds, followed by a different
tone for approximately 20 more seconds.
*3: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s ManualSupplement” for the maintenance interval applicable to your vehicle.
(except Canada)
Maintenance required
reminder light
Indicates that maintenance
is required according 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
maintenance.
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 main-
tenance data has been
reset.) Perform the necessary
maintenance.
Please reset the mainte-
nance data after the
maintenance is per-
formed. (
P. 227)
Warning lightWarning light/DetailsCorrection procedure

310 5-2. Steps to take in an emergency
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors, driver’s seat belt buckle switch, front passen-
ger occupant classification system (ECU and sensors), “AIR BAG ON” indi-
cator light, “AIR BAG OFF” indicator light, front passenger’s seat belt buckle
switch, seat belt pretensioner assemblies, airbags, interconnecting wiring
and power sources. ( P. 80)
■ Front passenger detection sensor, passenger seat belt reminder and
warning buzzer
●If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash and the warning
buzzer to sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
■ Electric power steering system warning light (warning buzzer)
The electric power steering system warning light may come on and the
warning buzzer may sound when the voltage is low or the voltage drops.
■ 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 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.
■
When the tire pressure warning li ght comes on (vehicles with a tire
pressure warning system)
Check the tire inflation pressure and adjust to the appropriate level.
Pushing the tire pressure warning reset switch will not turn off the tire
pressure warning light.

5
When trouble arises
311
5-2. Steps to take in an emergency
■The tire pressure warning light may come on due to natural causes
(vehicles with a tire pressure warning system)
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflat
ion pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire (vehicles with a tire pres-
sure warning system)
The compact spare tire is not equipped with a tire pressure warning
valve and transmitter. If a tire goes flat, the tire pressure warning light will
not turn off even though the flat tire has been replaced with the spare
tire. Replace the spare tire with the re paired tire and adjust the tire infla-
tion pressure. The tire pressure wa rning light will go off after a few min-
utes.
■If the tire pressure warning system is not functioning (vehicles with
a tire pressure warning system)
The system will be disabled in the following conditions:
(When the condition be comes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmit-
ters are used
●If the ID code on the tire pressu re warning valves and transmitters
are not registered in the tire pressure warning computer
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher
The tire pressure warning system may be disabled in the following condi-
tions:
(When the condition be comes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies
are nearby
●If a radio set at a similar frequency is in use in the vehicle
●If a window tint that affects the radio wave signals is installed
●If there is a lot of snow or ice on the vehicle, particularly around the
wheels or wheel housings

312 5-2. Steps to take in an emergency
●If non-genuine Toyota wheels are used (Even if you use Toyota
wheels, the tire pressure warning system may not work properly with
some types of tires.)
●If tire chains are used
■If the tire pressure warning light frequently comes on after blinking
for 1 minute (vehicles with a tire pressure warning system)
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to the “ON” position, have it
checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features P. 368) However, Toyota recommends that the
seat belt reminder buzzer be operational to alert the driver and front passen-
ger when seat belts are not fastened.
CAUTION
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.
■
If the tire pressure warning light comes on (vehicles with a tire
pressure warning system)
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is pr obable that you have a flat tire. Check the tires.
If a tire is flat, change it with th e spare tire and have the flat tire
repaired by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.