check engine light TOYOTA YARIS HATCHBACK 2021 User Guide

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4-2. Driving procedures
Driving
■Customization
If the smart entry & start system has been deactivated in a customized set-ting, refer to P.399.
Multidrive
1 Stop the vehicle completely.
2 Set the parking brake (→P.171),
and shift the shift lever to P.
Check the parking brake indicator is
illuminated.
3 Press the engine switch.
The engine will stop, and the meter dis- play will be extinguished.
4 Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown on
the multi-information display.
Manual transmission
1 Stop the vehicle completely.
2 If the parking brake is in manual
mode, set the parking brake.
( →P.171)
Check the parking brake indicator is illuminated.
3 Shift the shift lever to N.
( →P.168)
4 Press the engine switch.
The engine will stop, and the meter dis-
play will be extinguished.
5 Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown on
the multi-information display.
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the engine under any circumstances.Doing so may cause an accident
resulting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehi- cle is moving, do not lock or open the doors until the vehicle reaches a safe
and complete stop. Activation of the steering lock in this circumstance may lead to an accident, resulting in death
or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately.
■Symptoms indicating a malfunc-tion with the engine switch
If the engine switch seems to be oper- ating somewhat differently than usual, such as the switch sticking slightly,
there may be a malfunction. Contact any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer immediately.
Stopping the engine

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4-2. Driving procedures
Driving
1Right turn
2 Lane change to the right (move
the lever partway and release it)
The right hand signals will flash 3 times.
3 Lane change to the left (move
the lever partway and release it)
The left hand signals will flash 3 times.
4 Left turn
■Turn signals can be operated when
The engine switch is in ON.
■If the indicator flashes faster than
usual
Check that a light bulb in the front or rear turn signal lights has not burned
out.
1 Sets the parking brake
Fully pull the parking brake while
depressing the brake pedal.
The parking brake indicator light will
come on.
2 Releases the parking brake
Slightly raise the lever and lower it com-
pletely while pressing the button.
The parking brake indicator light will go
off.
■Parking the vehicle
→ P. 1 4 4
■Parking brake engaged warning
buzzer
A buzzer will sound if the vehicle is driven with the parking brake engaged.
“Release Parking Brake” is displayed on the multi-information display. (with the
vehicle reached a speed of 5 km/h [3
Turn signal lever
Operating instructions
Parking brake
Operating instructions

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4-3. Operating the lights and wipers
Driving
5Increases the rain-sensing wind-
shield wiper sensitivity
6 Decreases the rain-sensing
windshield wiper sensitivity
7 Washer/wiper dual oper-
ation
Pulling the lever operates the wipers
and washer.
Wipers will automatically operate a cou-
ple of times after the washer squirts.
■The windshield wiper and washer can be operated when
The engine switch is in ON.
■Effects of vehicle speed on wiper operation (vehicles with rain-sens-ing windshield wipers)
Vehicle speed affects the Intermittent wiper interval.
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●The raindrop sensor judges the amount of raindrops.
An optical sensor is adopted. It may
not operate properly when sunlight from the rising or setting of the sun intermittently strikes the windshield, or
if bugs etc. are present on the wind- shield.
●If the wiper is turned to AUTO mode while the engine switch is in ON, the wipers will operate once to show that
AUTO mode is activated.
●If the temperature of the raindrop sen-
sor is 85°C (185°F) or higher, or -15°C (5°F) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the windshield washer fluid reservoir.
WARNING
■Caution regarding the use of windshield wipers in AUTO mode (vehicles with rain-sensing wind-
shield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched
or the windshield is subject to vibra- tion in AUTO mode. Take care that your fingers or anything else do not
become caught in the windshield wip- ers.

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4-3. Operating the lights and wipers
Driving
3 Washer/wiper dual oper-
ation
Pushing the lever operates the wiper
and washer.
The wiper will automatically operate a
couple of times after the washer squirts.
■The rear window wiper and washer can be operated when
The engine switch is in ON.
■If no windshield washer fluid sprays
Check that the washer nozzle is not
blocked if there is washer fluid in the windshield washer fluid reservoir.
■Reverse-linked rear window wiper function
When the shift lever is shifted to R when the front wipers are operating, the rear window wiper will operate once.
■Back door opening linked rear win-
dow wiper stop function
When the rear window wiper are operat- ing, if a back door is opened while the
vehicle is stopped, operation of the rear window wiper will be stopped to prevent anyone near the vehicle from being
sprayed by water from the wiper. When the back door is closed, wiper operation will resume.
NOTICE
■When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-heat.
■When a nozzle becomes blocked
In this case, contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.Do not try to clear it with a pin or other
object. The nozzle will be damaged.

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4-5. Using the driving support systems
Driving
tance to the object.
Front corner sensor detection
Front center sensor detection
Rear corner sensor detection
Rear center sensor detection
Use the meter control switches to
enable/disable the Toyota parking
assist-sensor. ( →P.94, 100)
1 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select and then press .
When the Toyota parking assist-
sensor function is disabled, the
Toyota parking assist-sensor OFF
indicator ( →P.84) illuminates.
To re-enable the system when it
was disabled, select on the
multi-information display, select
and then on. If disabled using this
method, the system will not be re-
enabled by turning the engine
switch off and then to ON.
Turning Toyota parking
assist-sensor on/off
WARNING
■When using the Toyota parking
assist-sensor
Observe the following precautions. Failing to do so may result in the vehi-
cle being unable to be driven safely and possibly cause an accident.
●Do not use the sensor at speeds in excess of 10 km/h (6 mph).
●The sensors’ detection areas and reaction times are limited. When moving forward or reversing, check
the areas surrounding the vehicle (especially the sides of the vehicle) for safety, and drive slowly, using
the brake to control the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.
●The area directly under the bum-pers is not detected.Thin posts or objects lower than the
sensor may not be detected when approached, even if they have been detected before.
■When to disable the function
In the following situations, disable the
function as it may operate even though there is no possibility of a colli-sion.
●The vehicle is equipped with a fender pole, wireless antenna or fog
lights.

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6
Maintenance and care
Maintenance and care
6-1. Maintenance and care
Cleaning and protecting the
vehicle exterior ............... 308
Cleaning and protecting the
vehicle interior ................ 311
6-2. Maintenance
Maintenance requirements 314
6-3. Do-it-yourself maintenance
Do-it-yourself service precau-
tions ................................ 316
Hood ................................. 317
Positioning a floor jack...... 319
Engine compartment ........ 320
Tires .................................. 330
Tire inflation pressure ....... 340
Wheels.............................. 341
Air conditioning filter ......... 343
Wireless remote control/elec-
tronic key battery ............ 345
Checking and replacing fuses
....................................... 348
Light bulbs ........................ 351

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6-3. Do-it-yourself maintenance
Front
To equalize tire wear and help extend
tire life, Toyota recommends that tire
rotation is carried out approximately
every 10000 km (6000 miles).
When rotating front and rear tires which
have different tire inflation pressures,
do not fail to initialize the tire pressure
warning system after tire rotation.
Your vehicle is equipped with a tire
pressure warning system that uses
tire pressure warning valves and
transmitters to detect low tire infla-
tion pressure before serious prob-
lems arise.
The tire pressure warning system
of this vehicle adopts a 2-type
warning system.
zWhen “Adjust Pressure” is dis-
played (Normal Warning)
A warning with the tire pressure warn-
ing light and warning buzzer when
there is an unknown level of low tire
pressure with the appearance of the tire
due to natural air leakage as well as the
pressure lowering due to changes in
the pressure according to the outside
temperature. (Ways of coping: →P.375,
417)
zWhen “Immediately Check tire
when Safe” is displayed (Emer-
gency Warning)
A warning with the tire pressure warn-
ing light and warning buzzer when
there is a known level of low tire pres-sure with the appearance of the tire due
to pressure suddenly lowering. (Ways
of coping: →P.379, 389)
However, the system may not be able
to detect sudden tire ruptures (bursting,
etc.).
The tire pressure detected by the
tire pressure warning system can
be displayed on the multi-informa-
tion display.
The unit can be changed.
■How to change the unit
1Park the vehicle in a safe place
and turn the engine switch off.
Changing the unit cannot be performed
while the vehicle is moving.
2Turn the engine switch to ON.
3Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
4Press / (vertical display)
or / (horizontal display)
to select “Vehicle Settings” and
then press and hold .
Tire pressure warning sys-
tem

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6-3. Do-it-yourself maintenance
Maintenance and care
Check the wattage of the light bulb
to be replaced. ( →P.419)
Front
Front position lights (bulb type)
Front turn signal lights (bulb
type)
Front fog lights (bulb type)
Headlights (bulb type)
WARNING
●Never use a fuse of a higher amperage rating than that indi-
cated, or use any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.Never replace a fuse with a wire,
even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload
determined and repaired by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
■When installing the fuse box
cover (Engine compartment: type A and type B fuse boxes)
Press the fuse box cover, when
installing, after aligning all of the claw positions. Otherwise, the claws may
be damaged.
Light bulbs
You may replace the following
bulbs by yourself. The diffi-
culty level of replacement var-
ies depending on the bulb. As
there is a danger that compo-
nents may be damaged, we
recommend that replacement
is carried out by any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Preparing for light bulb
replacement
Bulb locations

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7-2. Steps to take in an emergency
When trouble arises
ble.
■Electric power steering system
warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering sys- tem warning light may come on and the warning buzzer may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured: →P.379, 389
If none of the tires are punctured: Turn the engine switch off then turn it to
ON. Check if the tire pressure warning light comes on or blinks.
If the tire pressure warning light blinks
for approximately 1 minute then stays on
There may be a malfunction in the tire
pressure warning system. Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer immedi- ately.
If the tire pressure warning light
comes on
1 After the temperature of the tires has lowered sufficiently, check the infla-tion pressure of each tire and adjust
them to the specified level.
2 If the warning light does not turn off even after several minutes have elapsed, check that the inflation
pressure of each tire is at the speci- fied level and perform initialization. ( →P.334)
■The tire pressure warning light may
come on due to natural causes
The tire pressure warning light may come on due to natural causes such as
natural air leaks and tire inflation pres- sure changes caused by temperature. 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 compact spare tire: The compact spare tire is not equipped with
a tire pressure warning valve and trans- mitter. 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 repaired tire and adjust the
tire inflation pressure. The tire pressure warning light will go off after a few min-utes.
Vehicles with a full-size spare tire: The spare tire is also equipped with a tire pressure warning valve and transmitter.
The tire pressure warning light will turn on if the tire inflation pressure of the spare tire is low. 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 repaired tire and adjust the tire inflation pressure. The tire pressure warning light will go off after a
few minutes.
■Conditions that the tire pressure warning system may not function properly
→ P. 3 3 3
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any autho-rized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. The vehicle will become extremely unstable during braking, and the ABS
system may fail, which could cause an accident resulting in death or seri-ous injury.

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7-2. Steps to take in an emergency
When trouble arises
■Warning messages
The warning messages explained below
may differ from the actual messages according to operation conditions and vehicle specifications.
■Warning buzzer
A buzzer may sound when a message is displayed.The buzzer may not be audible if the
vehicle is in a noisy location or if the audio system volume is high.
■If “Engine Oil Level Low Add or Replace” is displayed
The engine oil level is low. Check the
level of the engine oil, and add if neces-
sary.
This message may appear if the vehicle is stopped on a slope. Move the vehicle
to a level surface and check to see if the message disappears.
■If “Engine Stopped Steering Power Low” is displayed
This message is displayed if the engine is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering wheel firmly and operate it using more force than usual.
■If “Auto Power OFF to Conserve
Battery” is displayed
Power was cut off due to the automatic power off function. Next time when start-
ing the engine, increase the engine speed slightly and maintain that level for approximately 5 minutes to recharge the
battery.
■If “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunc-
tioning. Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately.
●The LED headlight system (if
equipped)
●Automatic High Beam (if equipped)
■If “Front Camera Out of Tempera-
ture Range Unavailable Wait until Normal Temperature”, “Front Cam-era Low Visibility Unavailable See
Owner’s Manual” or “Front Camera Unavailable See Owner’s Manual” is displayed
The following systems may be sus- pended until the problem shown in the message is resolved. ( →P.191, 368)
●PCS (Pre-Collision system) (if equipped)
●LTA (Lane Tracing Assist) (if equipped)
●Automatic High Beam (if equipped)
If a warning message is
displayed
The multi-information display
shows warnings for system
malfunctions and incorrectly
performed operations, and
messages that indicate a need
for maintenance. When a mes-
sage is displayed, perform the
appropriate corrective action
for the message.
If a warning message is dis-
played again after the appro-
priate actions have been
performed, contact any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Additionally, if a warning light
comes on or flashes at the
same time that a warning mes-
sage is displayed, take the
appropriate corrective action
for the warning light. ( →P.368)