warning light TOYOTA YARIS 2017 3.G Repair Manual

3097-2. Steps to take in an emergency
7
When trouble arises
■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. 363) However, Toyota recommends that the seat
belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.
WARNING
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavie r 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 co mes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires.
If a tire is flat, change it with the 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.
■If a blowout or sudden air leakage should occur (vehicles with a tire
pressure warning system)
The tire pressure warning system may not activate immediately.

3107-2. Steps to take in an emergency
WARNING
■Maintenance of the tire (vehicles with a tire pressure warning sys-
tem)
Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation pressure
label (tire and load information label). (If your vehicle has tires of a dif-
ferent size than the size indicated on the vehicle placard or tire inflation
pressure label [tire and load information label], you should determine
the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS-ti re pressure warning system) that
illuminates a low tire pre ssure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressure telltale (tire pressure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi ciency and tire tread life, and may
affect the vehicle’s hand ling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper ti re maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached
the level to trigger illumination of the TPMS low tire pressure telltale (tire
pressure warning light).

3117-2. Steps to take in an emergency
7
When trouble arises
WARNING
Your vehicle has also been equipped with a TPMS (tire pressure warn-
ing system) malfunction indicator to indicate when the system is not
operating properly. The TPMS (tire pressure warning system) malfunc-
tion indicator is combined with the lo w tire pressure telltale (tire pressure
warning light). When the system detects a malfunction, the telltale will
flash for approximately one minute and then remain continuously illumi-
nated. This sequence w ill continue upon subsequ ent vehicle start-ups
as long as the malfunction exists. When the malfunction indicator is illu-
minated, the system may not be able to detect or signal low tire pres-
sure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a vari-
ety of reasons, including the installation of replacement or alternate tires
or wheels on the vehicle that prevent the TPMS (tire pressure warning
system) from functioning properly. Always check the TPMS (tire pres-
sure warning system) malfunction te lltale after replacing one or more
tires or wheels on your vehicle to ensure that the replacement or alter-
nate tires and wheels allow the TPMS (tire pressure warning system) to
continue to function properly.
NOTICE
■To ensure the tire pressure warning system operates properly
(vehicles with a tire pr essure warning system)
Do not install tires with different sp ecifications or makers, as the tire
pressure warning system may not operate properly.

3227-2. Steps to take in an emergency
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(→ P. 345)
■After completing the tire change (vehicles with a tire pressure warn-
ing system)
The tire pressure warning system must be reset. ( →P. 254)
■When using the compact spare tire (vehicles with a tire pressure
warning system)
As the compact spare tire is not equipped with a tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you replace the
compact spare tire after the tire pressure warning light comes on, the light
remains on.
■If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the
vehicle.
Fit tire chains to the front tires.
1
2
3

3297-2. Steps to take in an emergency
7
When trouble arises
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with anything other than the intended ter-
minal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.
■ Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery:
● When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.
● Do not lean over the battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, an\
d
other battery-related parts.
● Do not allow children near the battery.
■ To prevent damage to the vehicle
Do not pull- or push-start the vehicle as the three-way catalytic conver\
ter
may overheat and become a fire hazard.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or engine drive belt.

3307-2. Steps to take in an emergency
If your vehicle overheats
●The high engine coolant temperature warning light ( →P. 302)
comes on or flashes, or a loss of engine power is experienced. (For
example, the vehicle sp eed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
4
1
2
3

3658-2. Customization
8
Vehicle specifications
Items to initialize
The following items must be initialized for normal system opera-
tion after such cases as the battery being reconnected, or main-
tenance being performed on the vehicle:
ItemWhen to initializeReference
Maintenance required
reminder light
(except Canada)After the maintenance
is performedP. 231
Tire pressure warning
system (if equipped)
When rotating the
tires on vehicles with
differing front and rear
tire inflation pressures
P. 2 5 4

384What to do if... (Troubleshooting)
●The seat belt reminder light is flashing
Is the driver wearing the seat belts? (→P. 304)
●The parking brake indicator is on
Is the parking brake released? (→P. 302)
Depending on the situation, other types of warning buzzer may also sound.
( →P. 302)
●When a warning light turns on, refer to P. 302.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( →P. 312)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. ( →P. 333)
A warning buzzer sounds during driving
A warning light turns on
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

385Alphabetical index
Alphabetical index
A/C ............................................ 202Air conditioning filter ............. 268
Manual air conditioning system ......... ....................... 202
ABS (Anti-lock Brake System) .................................. 192 Function ................................ 192
Warning light ......................... 303
Air conditioning filter .............. 268
Air conditioning system.......... 202 Air conditioning filter ............. 268
Manual air conditioning system ......... ....................... 202
Airbags ....................................... 34 Airbag operating conditions .... 41
Airbag precautions for your child .............................. 36
Airbag warning light .............. 303
Correct driving posture ........... 24
Curtain shield airbag operating conditions ............. 41
Curtain shield airbag
precautions ........................... 39
Front passenger occupant classification syst em............. 46
General airbag precautions .... 36
Locations of airbags................ 34
Modification and disposal of airbags ............... 40
Side airbag operating conditions ............................. 41
Side airbag precautions .......... 38
Side and curtain shield airbags operating
conditions ............................. 41
Side and curtain shield airbags precautions .............. 38
SRS airbags............................ 34 Anchor brackets ........................ 58
Anti-lock Brake System
(ABS) ...................................... 192
Function ................................ 192
Warning light......................... 303
Assist grips .............................. 222
Audio input .............................. 211
Automatic High Beam ............. 183
Automatic transmission ......... 139 If the shift lever cannot be
shifted from P ..................... 140
AUX port ................................... 211
Back door Back door ............................... 94
Luggage compartment
light....................................... 95
Back-up lights
Replacing light bulb .............. 288
Wattage ................................ 346
Battery ...................................... 249
If the battery is discharged ... 327
Preparing and checking before winter ...................... 197
Warning light......................... 302
Bottle holders .......................... 216
Brake Fluid ...................................... 344
Parking brake ....................... 144
Warning light......................... 302
Brake assist ............................. 192
Break-in tips ............................ 119
Brightness control Instrument panel light control .................................. 78
A
B

386Alphabetical index
Care................................... 224, 227Aluminum wheels.................. 225
Exterior ................................. 224
Interior................................... 227
Seat belts .............................. 228
Chains....................................... 198
Child restraint system ............... 53 Infant seats, definition ............. 54
Infant seats, installation .......... 59
Convertible seat, definition ..... 54
Convertible seat,installation ...................... 59, 60
Installing CRS with LATCH
anchors................................. 58
Installing CRS with seat belts .............................. 59
Installing CRS with top tether strap ........................... 63
Booster seats, definition ......... 54
Booster seats, installation ....... 62
Child safety ................................ 52 Airbag precautions .................. 36
Back door precautions ............ 95
Battery precautions ............... 250
Child restraint system ............. 53
How your child should wear
the seat belt .......................... 29
Installing child restraints ......... 57
Power window lock switch .... 113
Power window precautions ... 114
Rear door child-protectors ...... 92
Removed key battery
precautions ......................... 272
Seat belt precautions .............. 30
Child-protectors......................... 92
Cleaning ........................... 224, 227 Aluminum wheels.................. 225
Exterior ................................. 224
Interior................................... 227
Seat belts .............................. 228 Clock........................................... 81
Clutch ....................................... 343
Condenser................................ 248
Coolant ..................................... 246
Capacity................................ 341
Checking............................... 246
Preparing and checking before winter ...................... 197
Cooling system........................ 246 Engine overheating............... 330
CRS (Child Restraint System) .................................... 53
Cruise control .......................... 188
Warning lights ....................... 304
Cup holders ............................. 215
Curtain shield airbags............... 34
Customizable features ............ 363
C