battery TOYOTA YARIS 2021 Workshop Manual

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YARIS(HB) Owner's Manual_Europe_MK0001_en
6-3. Do-it-yourself maintenance
Maintenance and care
6Operate the or switch
and check that the doors can be
locked/unlocked.
Vehicles with a smart entry &
start system
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the
cover damaged.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec- tronic key module may stick to the
cover and the battery may not be visi- ble. In this case, remove the electronic key module in order to remove the bat-
tery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” termi- nal facing up.
4 When installing the key cover
and mechanical key, install by
conducting step 2 and step 1
with the directions reversed.
5 Operate the or switch
and check that the doors can be
locked/unlocked.
WARNING
■Removed battery and other parts
These parts are small and if swal- lowed by a child, they can cause choking. Keep away from children.
Failure to do so could result in death or serious injury.
■Lithium battery precautions
CAUTION RISK OF EXPLOSION IF BATTERY
IS REPLACED BY AN INCORRECT TYPE.DISPOSE OF USED BATTERIES
ACCORDING TO THE INSTRUC- TIONS

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6-3. Do-it-yourself maintenance
1Turn the engine switch off.
2 Open the fuse box cover.
Engine compartment: type A
fuse box
Push the tabs in and lift the lid off.
Engine compartment: type B
fuse box
Push the tabs in and lift the lid off.
NOTICE
■When replacing the battery
Use a flathead screwdriver of appro-
priate size. Applying excessive force may deform or damage the cover.
■For normal operation after replacing the battery
Observe the following precautions to
prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote con-trol.
●Do not bend either of the battery terminals.
■When removing the battery cover (vehicles without a smart entry &
start system)
Do not forcibly remove the battery cover, otherwise it may be damaged.
If the battery cover is difficult to remove, lift the edge to remove it.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses

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7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers .......... 360
If your vehicle has to be
stopped in an emergency 360
If the vehicle is trapped in rising
water............................... 361
7-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 363
If you think something is wrong
....................................... 366
Fuel pump shut off system 367
If a warning light turns on or a
warning buzzer sounds... 368
If a warning message is dis-
played ............................. 377
If you have a flat tire (vehicles
with an emergency tire punc-
ture repair kit) ................. 379
If you have a flat tire (vehicles
with a spare tire) ............. 389
If the engine will not start .. 397
If you lose your keys ......... 399
If the electronic key does not
operate properly (vehicles
with a smart entry & start sys-
tem) ................................ 399
If the vehicle battery is dis-
charged .......................... 401
If your vehicle overheats... 405
If the vehicle becomes stuck
....................................... 408

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7-1. Essential information
7-1.Essential information
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch once
again.
■Emergency flashers
●If the emergency flashers are used for a long time while the engine is not
operating, the battery may discharge.
●If any of the SRS airbags deploy
(inflate) or in the event of a strong rear impact, the emergency flashers will turn on automatically.
The emergency flashers will turn off automatically after operating for approximately 20 minutes. To manu-
ally turn the emergency flashers off, press the switch twice.(The emergency flashers may not turn
on automatically depending on the force of the impact and conditions of the collision.)
1 Steadily step on the brake pedal
with both feet and firmly depress
it.
Do not pump the brake pedal repeat- edly as this will increase the effort required to slow the vehicle.
2 Shift the shift lever to N.
If the shift lever is shifted to N
3 After slowing down, stop the
vehicle in a safe place by the
road.
4 Stop the engine.
If the shift lever cannot be shifted
to N
3 Keep depressing the brake
pedal with both feet to reduce
vehicle speed as much as possi-
ble.
4 Perform the following proce-
dure to stop the engine:
Vehicles without a smart entry &
start system
Turn the engine switch to ACC.
Emergency flashers
The emergency flashers are
used to warn other drivers
when the vehicle has to be
stopped on the road due to a
breakdown, etc.
Operating instructions
If your vehicle has to be
stopped in an emer-
gency
Only in an emergency, such as
if it becomes impossible to
stop the vehicle in the normal
way, stop the vehicle using the
following procedure:
Stopping the vehicle

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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)

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7-2. Steps to take in an emergency
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control (if equipped)
■If “Pre-Collision System Unavail-
able See Owner’s Manual”, “Pre- Collision System Out of Tempera-ture Range Unavailable See
Owner’s Manual” or “Pre-Collision System Radar In Self Calibration 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)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control
■If “Oil Maintenance Required Soon” is displayed
Indicates that the engine oil should be
scheduled to be changed.
Check the engine oil and change it if necessary.
After changing the engine oil, make sure to reset the message. ( →P.323)
■If “Oil Maintenance Required Visit Your Dealer” is displayed
Indicates that the engine oil should be changed.
Check and change the engine oil, and
oil filter by any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer. After changing the engine
oil, make sure to reset the message. ( →P.323)
■If “Radar Cruise Control Unavail- able See Owner’s Manual” is dis-
played (if equipped)
The dynamic radar cruise control sys- tem is suspended temporarily or until
the problem shown in the message is resolved. (causes and coping methods: → P.191)
■If “Radar Cruise Control Unavail-
able” is displayed (if equipped)
The dynamic radar cruise control sys-
tem cannot be used temporarily. Use the
system when it becomes available again.
■If a message that indicates the need for visiting your Toyota dealer
is displayed
The system or part shown on the multi- information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately.
■If a message that indicates the need for referring to Owner’s Man-ual is displayed
●If “Engine Coolant Temp High” is dis-played, follow the instructions accord-
ingly. ( →P.405)
●If “Transmission Oil Temp. High” is
displayed, follow the instructions accordingly. ( →P.164)
●If “Exhaust Filter Full” is displayed, fol- low the instructions accordingly. ( →P.267)
●If any of the following messages are displayed on the multi-information dis-
play, it may indicate a malfunction. Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer immediately.• “Smart Entry & Start System Malfunc-
tion”
●If any of the following messages are
displayed on the multi-information dis- play, it may indicate a malfunction. Immediately stop the vehicle and con-
tact any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer.
• “Braking Power Low” • “12-Volt Battery Charging System Malfunction”
•“Oil Pressure Low”

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7-2. Steps to take in an emergency
When trouble arises
One of the following may be the
cause of the problem:
z There may not be sufficient fuel
in the vehicle’s tank. Refuel the
vehicle.
z The engine may be flooded. Try
to restart the engine again fol-
lowing correct starting proce-
dures. ( →P.158, 159)
z There may be a malfunction in
the engine immobilizer system.
( →P. 7 6 )
One of the following may be the
cause of the problem:
z The battery may be discharged.
( →P.401)
z The battery terminal connec-
NOTICE
■Driving with tire chains and the compact spare tire (if equipped)
Do not fit tire chains to the compact spare tire. Tire chains may damage the vehicle body and adversely affect
driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and transmitter, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning
valve and transmitter may be dam- aged if not handled correctly.
■To avoid damage to the tire pres-sure warning valves and trans-mitters (except for compact
spare)
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is used, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( →P.333)
If the engine will not
start
If the engine will not start even
though correct starting proce-
dures are being followed
( →P.158, 159), consider each of
the following points:
The engine will not start
even though the starter
motor operates normally.
The starter motor turns over
slowly, the interior lights
and headlights are dim, or
the horn does not sound or
sounds at a low volume.

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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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7-2. Steps to take in an emergency
When trouble arises
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on. (Customizable features: →P.422)
●Check if battery-saving mode is set. If it is set, cancel the function. ( →P.124)
If you lose your keys
New genuine keys can be
made by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable
repairer using the other key
(vehicles without a smart entry
& start system) or mechanical
key (vehicles with a smart
entry & start system) and the
key number stamped on your
key number plate.
Keep the plate in a safe place
such as your wallet, not in the
vehicle.
NOTICE
■When an electronic key is lost
(vehicles with a smart entry & start system)
If the electronic key remains lost, the
risk of vehicle theft increases signifi- cantly. Visit any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer immediately with all remaining electronic keys that were provided with your vehicle.
If the electronic key
does not operate prop-
erly (vehicles with a
smart entry & start sys-
tem)
If communication between the
electronic key and vehicle is
interrupted ( →P.124) or the
electronic key cannot be used
because the battery is
depleted, the smart entry &
start system and wireless
remote control cannot be used.
In such cases, the doors can
be opened and the engine can
be started by following the pro-
cedure below.
NOTICE
■In case of a smart entry & start system malfunction or other key-related problems
Take your vehicle with all the elec- tronic keys provided with your vehicle to any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer.