2021 TOYOTA YARIS battery

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YARIS(HB) Owner's Manual_Europe_MK0001_en
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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YARIS(HB) Owner's Manual_Europe_MK0001_en
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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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
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.

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
When trouble arises
3Firmly depress the brake pedal
(Multidrive) or clutch pedal
(manual transmission) and
check that is shown on the
multi-information display.
4 Press the engine switch shortly
and firmly.
In the event that the engine still
cannot be started, contact any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■Stopping the engine
Shift the shift lever to P (Multidrive) or N (manual transmission) and press the
engine switch as you normally do when stopping the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the electronic key battery be replaced immediately when the battery is
depleted. ( →P.345)
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechani- cal key when the alarm system is set, the alarm may be triggered. ( →P. 7 8 )
■Changing engine switch modes
Release the brake pedal (Multidrive) or clutch pedal (manual transmission) and press the engine switch in step 3 above.
The engine does not start and modes will be changed each time the switch is pressed. ( →P.162)
If you have a set of jumper (or
booster) cables and a second vehi-
cle with a 12-volt battery, you can
jump start your vehicle by following
the steps below.
1 Vehicles with an alarm (→P. 7 8 ) :
Confirm that the key is being
carried.
When connecting the jumper (or
booster) cables, depending on the situ- ation, the alarm may activate and doors locked. ( →P. 7 9 )
2Open the hood. (→P.317)
If the vehicle battery is
discharged
The following procedures may
be used to start the engine if
the vehicle’s battery is dis-
charged.
You can also call any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer or a qualified
repair shop.
Restarting the engine

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
3Connect a positive jumper cable clamp to on your vehicle and con-
nect the clamp on the other end of the positive cable to on the sec-
ond vehicle. Then, connect a negative cable clamp to on the second
vehicle and connect the clamp at the other end of the negative cable to
.
1KR-FE engine
M15A-FKS engine
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
When trouble arises
Solid, stationary, unpainted metallic point away from the battery and any
moving parts as shown in the illustration
4 Start the engine of the second
vehicle. Increase the engine
speed slightly and maintain at
that level for approximately 5
minutes to recharge the battery
of your vehicle.
5 Vehicles with a smart entry &
start system: Open and close
any of the doors of your vehicle
with the engine switch OFF.
6 Maintain the engine speed of
the second vehicle and start the
engine of your vehicle by turning
the engine switch to ON.
7 Once the vehicle’s engine has
started, remove the jumper
cables in the exact reverse
order from which they were con-
nected.
Once the engine starts, have the
vehicle inspected at any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer as soon as possible.
■Starting the engine when the bat- tery is discharged
The engine cannot be started by push-
starting.
■To prevent battery discharge
●Turn off the headlights and the audio
system while the engine is stopped.
●Turn off any unnecessary electrical
components when the vehicle is run- ning at a low speed for an extended period, such as in heavy traffic.
■When the battery is removed or dis-charged
●Information stored in the ECU is cleared. When the battery is depleted, have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
●Some systems may require initializa-tion. ( →P.431)
■When removing the battery termi-
nals
When the battery terminals are removed, the information stored in the
ECU is cleared. Before removing the battery terminals, contact any autho-rized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehi-
cle is not in use, due to natural dis- charge and the draining effects of certain electrical appliances. If the vehi-
cle is left for a long time, the battery may discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■When recharging or replacing the battery (vehicles with a smart entry & start system)
●In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the battery is discharged. Use the wireless remote control or the mechanical key
to lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged but will start normally after the second attempt. This is not a mal-
function.
●The engine switch mode is memo-
rized by the vehicle. When the battery is reconnected, the system will return

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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.