2023 TOYOTA YARIS CROSS key battery

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7-2. Steps to take in an emergency
One of the following may be the
cause of the problem:
 Vehicles with a smart entry &
start system: The electronic key
may not be functioning properly.
( P.470)
 There may not be sufficient fuel
in the vehicle’s tank. Refuel the
vehicle.
 There may be a malfunction in
the immobilizer system. ( P.84)
 Vehicles with a smart entry &
start system: There may be a
malfunction in the steering lock
system.
 Vehicles with a smart entry &
start system: The hybrid system
may be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, depend-
ing on the type of malfunction, an
interim measure is available to
start the hybrid system.
( P.469)
 The temperature of the hybrid
battery (traction battery) may be
extremely low (below approxi-
mately -30°C [-22°F]). ( P.189,
191)
One of the following may be the
cause of the problem:
 The 12-volt battery may be dis-
charged. ( P.472)
 The 12-volt battery terminal con-
nections may be loose or cor-
roded. ( P.388)
One of the following may be the
cause of the problem:
 The 12-volt battery may be dis-
charged. ( P.472)
 One or both of the 12-volt battery
terminals may be disconnected.
( P.388)
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.
If the hybrid system will
not start
Reasons for the hybrid system
not starting vary depending on
the situation. Check the follow-
ing and perform the appropri-
ate procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed. ( P.189,
191)
The interior lights and head-
lights are dim, or the horn
does not sound or sounds at
a low volume.
The interior lights and head-
lights do not turn on, or the
horn does not sound.

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7-2. Steps to take in an emergency
■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.494)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P.153)
Use the mechanical key (P.133)
in order to perform the following
operations:
1 Locks all the doors
2 Unlocks all the doors
■Key linked functions
1 Closes the windows (turn and hold)*
2Opens the windows (turn and hold)*
*: These settings must be customized at
any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer.
If the electronic key
does not operate prop-
erly (vehicles with a
smart entr y & start sys-
tem)
If communication between the
electronic key and vehicle is
interrupted ( P.154) 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 hybrid sys-
tem can be started by following
the procedure 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.
Locking and unlocking the
doors

471
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7-2. Steps to take in an emergency
When trouble arises
1Ensure that the shift lever is in P
and depress the brake pedal.
2 Touch the area behind the lock
button and unlock button on the
electronic key to the power
switch.
When the electronic key is detected, a
buzzer sounds and the power switch will turn to ON.
When the smart entry & start system is
deactivated in customization setting, the power switch will turn to ACC.
3 Firmly depress the brake pedal
and check that is shown on
the multi-information display.
4 Press the power switch shortly
and firmly.
In the event that the hybrid system
still cannot be started, contact any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when
stopping the hybrid system.
■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.409)
■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. 8 6 )
■Changing power switch modes
Release the brake pedal and press the
power switch in step 3 above. The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P.193)
WARNING
■When using the mechanical key and operating the power win-
dows
Operate the power window after checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window.
Also, do not allow children to operate the mechanical key. It is possible for children and other passengers to get
caught in the power window.
Starting the hybrid system

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7-2. Steps to take in an emergency
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. 8 6 ) :
Confirm that the electronic key
is being carried.
When connecting the jumper (or booster) cables, depending on the situ-
ation, the alarm may activate and doors
locked. ( P. 8 7 )
2Open the hood (P.380) and
fuse box cover.
3 Open the exclusive jump start-
ing terminal cover.
4 Connect a positive jumper cable clamp to on your vehicle and con-
nect the clamp on the other end of the positive cable to on th e sec-
ond vehicle. Then, connect a negative cable clamp to on the se cond
If the 12-volt batter y is
discharged
The following procedures may
be used to start the hybrid sys-
tem if the 12-volt 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 hybrid sys-
tem

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7-2. Steps to take in an emergency
authorized repairer, or any reliable
repairer as soon as possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by
push-starting.
■To prevent 12-volt battery dis- charge
●Turn off the headlights and the audio system while the hybrid system is off.
●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 12-volt battery is removed or discharged
●Information stored in the ECU is cleared. When the 12-volt battery is depleted, have the vehicle inspected
at any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer.
●Some systems may require initializa-tion. ( P.505)
■When removing the 12-volt battery
terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12- volt battery terminals, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Charging the 12-volt battery
The electricity stored in the 12-volt bat- tery will discharge gradually even when the vehicle is not in use, due to natural
discharge and the draining effects of certain electrical appliances. If the vehi-cle is left for a long time, the 12-volt bat-
tery may discharge, and the hybrid system may be unable to start. (The 12-volt battery recharges automatically
while the hybrid system is operating.)
■When recharging or replacing the
12-volt 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 12-volt
battery is discharged. Use the wire- less remote control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt bat-
tery has recharged but will start nor- mally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the 12-volt battery was discharged.
Before disconnecting the 12-volt bat- tery, turn the power switch off.If you are unsure what mode the
power switch was in before the 12-volt battery discharged, be especially careful when reconnecting the 12-volt
battery.
■When replacing the 12-volt battery
●Use a Central Degassing type 12-volt
battery (European 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.
LN0, 35Ah, 264A). • If the sizes differ, the 12-volt 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 12-
volt battery may discharge and the hybrid system may not be able to start.
●Use a ventilation type calcium battery
●Use a 12-volt battery with a handle. If a 12-volt battery without a handle is used, removal is more difficult.

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What to do if... (Troubleshooting)
1-1.What to d o if... (Tro ublesho oting)What to do if... (Troubleshooting)
If you lose your keys or mechani-
cal keys, new genuine keys or
mechanical keys can be made
by any authorized Toyota retailer
or Toyota authorized repairer, or
any reliable repairer. ( P.469)
 Vehicles with smart entry & start
system: If you lose your elec-
tronic keys, the risk of vehicle
theft increases significantly. Con-
tact any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer
immediately. ( P.469)
 Is the key battery weak or
depleted? ( P.409)
 Vehicles with a smart entry &
start system: Is the power switch
in ON?
When locking the doors, turn the power
switch off. ( P. 1 9 3)
Vehicles with a smart entry &
start system: Is the electronic
key left inside the vehicle?
When locking the doors, make sure that
you have the electronic key on your
person.
 The function may not operate
properly due to the condition of
the radio wave. ( P.133, 154)
 Is the child-protector lock set?
The rear door cannot be opened from
inside the vehicle when the lock is set.
Open the rear door from outside and
then unlock the child-protector lock.
( P.139)
Is the shift lever in P? (P.189)
 Is the steering wheel unlocked?
( P.189)
 Is the 12-volt battery dis-
charged? ( P.472)
 Did you press the power switch
If you have a problem, check
the following before contacting
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The doors cannot be locked
or unlocked
The rear door cannot be
opened
If you think something is
wrong
The hybrid system does not
start (vehicles without a
smart entry & start system)
The hybrid system does not
start (vehicles with a smart
entry & start system)

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What to do if... (Troubleshooting)
while firmly depressing the brake
pedal? ( P.191)
 Is the shift lever in P? (P.191)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.153)
 Is the steering wheel unlocked?
( P.192)
 Is the electronic key battery
weak or depleted?
In this case, the hybrid system can be
started in a temporary way. ( P. 4 7 1)
Is the 12-volt battery dis-
charged? ( P.472)
 Is the power switch in ON?
If you cannot release the shift lever by
depressing the brake pedal with the
power switch in ON. ( P.198)
Vehicles without a smart entry &
start system: It is locked to pre-
vent theft of the vehicle if the key
is pulled from the power switch.
( P.189)
 Vehicles with a smart entry &
start system: It is locked auto-
matically to prevent theft of the
vehicle. ( P.192)
 Is the window lock switch
pressed?
The power window except for the one
at the driver’s seat cannot be operated
if the window lock switch is pressed.
( P.171)
The auto power off function will
be operated if the vehicle is left
in ACC or ON (the hybrid system
is not operating) for a period of
time. ( P.194)
 The seat belt reminder light is
flashing
Are the driver and the passenger wear-
ing the seat belts? ( P. 4 3 8)
The parking brake indicator is on
Is the parking brake released?
( P.200)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.435, 445)
 Did anyone inside the vehicle
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The steering wheel cannot
be turned after the hybrid
system is stopped
The windows do not open or
close by operating the
power window switches
The power switch is turned
off automatically (vehicles
with a smart entry & start
system)
A warning buzzer sounds
during driving
An alarm is activated and the
horn sounds (vehicles with
an alarm)

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Alphabetical Index
Display
Dynamic radar cruise control with
full-speed range ....................... 252
Energy monitor........................... 123
Fuel consumption....................... 123
Head-up display ......................... 119
LTA (Lane-Tracing Assist) .......... 248
Multi-information display .... 106, 112
Speed limiter .............................. 264
Toyota parking assist-sensor ..... 276
Toyota Teammate Advanced Park
................................................. 306
Warning message ...................... 445
Display change button ........... 97, 104
Distance until next engine oil change
............................................... 98, 104
Do-it-yourself maintenance ......... 376
Door
Double locking system ................. 85
Door lock
Back door ................................... 139
Side doors .................................. 135
Smart entry & start system......... 152
Wireless remote control ............. 132
Doors
Back door ................................... 139
Door glasses .............................. 169
Door lock ............................ 135, 139
Open door warning buzzer. 137, 138
Outside rear view mirrors ........... 166
Rear door child-protectors ......... 139
Side doors .................................. 135
Double locking system .................. 85
Downhill assist control system ... 325
Drive distance ....................... 110, 116
Drive information .................. 110, 116
Driving ........................................... 175
Break-in tips ............................... 176
Correct driving posture................. 33
Driving mode select switch......... 322
Hybrid electric vehicle driving tips
................................................. 335
Procedures ................................. 175
Winter drive tips ......................... 337
Driving information display . 107, 114
Driving range......................... 107, 114
Driving support system information
display ................................. 109, 116
Dynamic radar cruise control with
full-speed range.......................... 252
Road Sign Assist (RSA) ............. 260
Warning message ...................... 262
E
eCall ................................................. 65
“SOS” button ................................ 65
ECB (Electronically Controlled Brake
System) ....................................... 328
Warning light .............................. 435
ECO Accelerator Guidance .. 108, 114
Eco drive mode .............................322
Eco score............................... 108, 114
Elapsed time.......................... 110, 116
Electric motor (traction motor) ...... 75
Electric Power Steering (EPS) ..... 329
Warning light .............................. 438
Electronic key ............................... 130
Battery-saving function............... 153
If the electronic key does not operate
properly .................................... 470
Replacing the battery ................. 409
Electronically Controlled Brake Sys-
tem (ECB) .................................... 328
Warning light .............................. 435
Emergency brake signal .............. 329
Emergency flashers...................... 426
Emergency tire puncture ............. 448