2021 TOYOTA YARIS HATCHBACK check engine light

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YARIS(HB) Owner's Manual_Europe_MK0001_en
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

351
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YARIS(HB) Owner's Manual_Europe_MK0001_en
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

375
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YARIS(HB) Owner's Manual_Europe_MK0001_en
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.

377
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YARIS(HB) Owner's Manual_Europe_MK0001_en
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)

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
tions may be loose or corroded.
( →P.325)
The engine starting system may be
malfunctioning due to an electrical
problem such as electronic key bat-
tery depletion or a blown fuse.
However, an interim measure is
available to start the engine.
( →P.398)
One of the following may be the
cause of the problem:
z The battery may be discharged.
( →P.401)
z One or both of the battery termi-
nals may be disconnected.
( →P.325)
z There may be a malfunction in
the steering lock system (vehi-
cles with smart entry & start sys-
tem).
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer if the problem cannot
be repaired, or if repair procedures are
unknown.
When the engine does not start, the
following steps can be used as an
interim measure to start the engine
if the engine switch is functioning
normally.
Do not use this starting procedure
except in case of emergency.
1 Set the parking brake.
2 Check that the shift lever is in P
(Multidrive) or N (manual trans-
mission).
3 Turn the engine switch to ACC.
4 Press and hold the engine
switch for about 15 seconds
while depressing the brake
pedal (Multidrive) or clutch
pedal (manual transmission)
firmly.
Even if the engine can be started using
the above steps, the system may be
malfunctioning. Have the vehicle
inspected by any authorized Toyota
retailer or Toyota authorized repairer, or
any reliable repairer.
The starter motor does not
turn over (vehicles with a
smart entry & start system)
The starter motor does not
turn over, the interior lights
and headlights do not turn
on, or the horn does not
sound.
Emergency start function
(vehicles with a smart entry
& start system)

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
to the mode it was in before the bat-
tery was discharged. Before discon- necting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the bat-tery discharged, be especially careful
when reconnecting the battery.
■When replacing the battery
●Use a battery that conforms to Euro-
pean regulations.
●Use a battery that the case size is
same as the previous one, 20 hour rate capacity (20HR) is equivalent or greater, and performance rating
(CCA) is equivalent or greater. Check the label on top of the battery for the battery size and specifications (ex.
LN2, 60Ah, 345A). • If the sizes differ, the battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehi-cle is not used is a short time, the bat-
tery may discharge and the engine may not be able to start.
●For details, consult any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■When removing the battery ter-minals
Always remove the negative (-) termi-
nal first. If the positive (+) terminal contacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading to a fire in addition to electrical shocks and death or serious injury.
■Avoiding battery fires or explo-sions
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 any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to come into contact with
any other parts or metal surfaces in the area, such as brackets or unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into con-
tact with each other.
●Do not smoke, use matches, ciga-
rette 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 precautions when handling the bat-
tery:
●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 atten-
tion. Place a wet sponge or cloth over the affected area until medical attention can be received.
●Always wash your hands after han-dling the battery support, terminals,
and other battery-related parts.
●Do not allow children near the bat-
tery.

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YARIS(HB) Owner's Manual_Europe_MK0001_en
What to do if... (Troubleshooting)
Is the parking brake released?
(→
P. 1 7 1)
Depending on the situation, other
types of warning buzzer may also
sound. (→P.368, 377)
zDid anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. (→
P. 7 8)
Do one of the following to deacti-
vate or stop the alarms:
zUnlock the doors using the entry
function (if equipped) or wireless
remote control.
zStarting the engine. (The alarm
will be deactivated or stopped
after a few seconds.)
zIs the electronic key left inside
the vehicle?
Check the message on the multi-infor-
mation display. (→
P.377)
zWhen a warning light turns on or
a warning message is displayed,
refer to P.368, 377.zVehicles with an emergency tire
puncture repair kit: Stop the vehi-
cle in a safe place and repair the
flat tire temporarily with the
emergency tire puncture repair
kit. (→P.379)
zVehicles with spare tire: Stop the
vehicle in a safe place and
replace the flat tire with the spare
tire. (→P.389)
zTry the procedure for when the
vehicle becomes stuck in mud,
dirt, or snow. (→P.408)
An alarm is activated and the
horn sounds (vehicles with
an alarm)
A warning buzzer sounds
when leaving the vehicle
(vehicles with a smart entry
& start system)
A warning light turns on or a
warning message is dis-
played
When a problem has
occurred
If you have a flat tire
The vehicle becomes stuck

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YARIS(HB) Owner's Manual_Europe_MK0001_en
Alphabetical Index
Drive distance ......................... 97, 102
Drive information .................... 97, 102
Drive-start control ........................ 145
Driving ........................................... 144
Break-in tips ............................... 146
Correct driving posture................. 31
Driving mode select switch ........ 266
Procedures................................. 144
Winter drive tips ......................... 274
Driving information display ... 94, 100
Driving range .................. 95, 100, 101
Driving support system information
display ................................... 96, 102
Dynamic radar cruise control ...... 213
Road Sign Assist (RSA) ............. 220
Warning message ...................... 222
E
eCall ................................................. 66
“SOS” button ................................ 66
Eco drive mode ............................. 266
Eco Driving Indicator ..... 95, 101, 108
Eco Driving Indicator Light.... 95, 101
Elapsed time ........................... 97, 102
Electric Power Steering (EPS) ..... 269
Warning light .............................. 370
Electronic key ............................... 112
Battery-saving function .............. 124
If the electronic key does not operate
properly.................................... 399
Replacing the battery ................. 345
Emergency brake signal .............. 269
Emergency flashers ..................... 360
Emergency tire puncture ............. 379
Emergency, in case of
If a warning buzzer sounds ........ 368
If a warning light turns on ........... 368
If a warning message is displayed
................................................. 377
If the battery is discharged ......... 401
If the electronic key does not operate properly .................................... 399
If the engine will not start ........... 397
If the vehicle is trapped in rising
water ........................................361
If you have a flat tire ........... 379, 389
If you lose your keys ..................399
If you think something is wrong .. 366
If your vehicle becomes stuck .... 408
If your vehicle has to be stopped in
an emergency .......................... 360
If your vehicle needs to be towed
................................................. 363
If your vehicle overheats ............405
Engine ............................................ 412
ACC.................................... 158, 162
Compartment .............................320
Engine switch .....................158, 159
Fuel pump shut off system ......... 367
Hood........................................... 317
How to start the engine ...... 158, 159
Identification number .................. 411
If the engine will not start ........... 397
If your vehicle has to be stopped in
an emergency .......................... 360
Ignition switch (engine switch) . 158,
159
Overheating................................ 405
Tachometer .................... 86, 90, 108
Engine coolant .............................. 324
Capacity ..................................... 415
Checking .................................... 324
Preparing and checking before win-
ter ............................................. 274
Engine coolant temperature gauge
................................................. 86, 90
Engine immobilizer system ........... 76
Engine oil....................................... 321
Capacity ..................................... 413
Checking .................................... 321
Preparing and checking before win-
ter ............................................. 274