2023 TOYOTA YARIS CROSS Hybrid system

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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

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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
When trouble arises
vehicle and connect the clamp at the other end of the negative cable to
.
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclu sive jump
starting terminal and any moving parts as shown in the illustra tion
5 Start the engine of the second
vehicle. Increase the engine
speed slightly and maintain at
that level for approximately 5
minutes to recharge the 12-volt
battery of your vehicle.
6 Vehicles with a smart entry &
start system: Open and close
any of the doors of your vehicle
with the power switch OFF.
7 Maintain the engine speed of
the second vehicle and start the
hybrid system of your vehicle by
turning the power switch to ON.
8 Make sure the “READY” indica-
tor comes on. If the indicator
does not come on, contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
9 Once the hybrid system has
started, remove the jumper
cables in the exact reverse
order from which they were con-
nected.
10 Close the exclusive jump start-
ing terminal cover and install the
fuse box cover to its original
position.
Once the hybrid system starts,
have the vehicle inspected at any
authorized Toyota retailer or Toyota

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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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7-2. Steps to take in an emergency
When trouble arises
If the engine coolant temperature
gauge enters the red zone or
“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the multi-
information display
1 Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the hybrid
system.
2 If you see steam: Carefully lift
the hood after the steam sub-
sides.
If you do not see steam: Care-
fully lift the hood.
3 After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” line
5 Add coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant tempera-
ture gauge ( P.95, 100) is in
the red zone or a loss of hybrid
system power is experienced.
(For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown on
the multi-information display.
 Steam comes out from under
the hood.
Correction procedures

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7-2. Steps to take in an emergency
coolant is unavailable.
6 Start the hybrid system and turn
the air conditioning system on to
check that the radiator cooling
fan operates and to check for
coolant leaks from the radiator
or hoses.
The fan operates when the air condi- tioning system is turned on immediately
after a cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it is difficult to check
these, turn the air conditioning system on and off repeatedly. (The fan may not operate in freezing temperatures.)
7 If the fan is not operating: Stop
the hybrid system immediately
and contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer.
If the fan is operating: Have the
vehicle inspected at the nearest
any authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
If “Hybrid System Overheated
Output Power Reduced” is
shown on the multi-information
display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and
carefully lift the hood.
3 After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
If a large amount of coolant leaks, immediately contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “F” or “L”
lines on the reservoir.
Reservoir

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7-2. Steps to take in an emergency
When trouble arises
“F” line
“L” line
5 Add coolant if necessary.
If water was added in an emergency, have the vehicle inspected at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as soon as possible.
6 After stopping the hybrid system
and waiting for 5 minutes or
more, start the hybrid system
again and check for the multi-
information display.
If the message does not disap-
pear: Stop the hybrid system
and contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer.
If the message is not displayed:
The hybrid system temperature
has dropped and the vehicle
may be driven normally.
However, if the message appears again
frequently, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions. Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood
until the steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the “READY”
indicator is off. When the hybrid system is operating, the gasoline engine may automatically start, or
the cooling fan may suddenly oper- ate even if the gasoline engine stops. Do not touch or approach
rotating parts such as the fan, which may lead to fingers or cloth-ing (especially a tie, a scarf or a
muffler) getting caught, resulting in serious injury.
●Do not loosen the coolant reservoir caps while the hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power con-trol unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding cool coolant to a hot hybrid
system too quickly can cause dam- age to the hybrid system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or
dust etc.).

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7-2. Steps to take in an emergency
1Stop the hybrid system. Set the
parking brake and shift the shift
lever to P.
2 Remove the mud, snow or sand
from around the front wheels.
3 Place wood, stones or some
other material under the front
wheels to help provide traction.
4 Restart the hybrid system.
5 Shift the shift lever to D or R and
release the parking brake. Then,
while exercising caution,
depress the accelerator pedal.
■When it is difficult to free the vehi-
cle
Press the switch to turn off TRC.
A message will be shown on the multi-
information display.
Ty p e A
NOTICE
●Do not use any coolant additive.
If the vehicle becomes
stuck
Carry out the following proce-
dures if the tires spin or the
vehicle becomes stuck in mud,
dirt or snow:
Recovering procedure