engine TOYOTA YARIS CROSS 2021 Workshop Manual

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6-3. Do-it-yourself maintenance
Maintenance and care
Check the radiator and condenser
and clear away any foreign objects.
If either of the above parts is
extremely dirty or you are not sure
of their condition, have your vehicle
inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
If the washer fluid level is at “1/2”,
add washer fluid.
NOTICE
■If you spill coolant
Be sure to wash it off with water to
prevent it from damaging parts or paint.
Checking the radiator and
condenser
WARNING
■When the hybrid system is hot
Do not touch the radiator or con-
denser as they may be hot and cause serious injuries, such as burns.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the
hybrid system is hot or operating as washer fluid contains alcohol and may catch fire if spilled on the engine,
etc.
NOTICE
■Do not use any fluid other than
washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as damaging the pump leading to prob-
lems of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as nec- essary.Refer to the freezing temperatures
listed on the label of the washer fluid bottle.

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6-3. Do-it-yourself maintenance
1Turn the power 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.
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
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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6-3. Do-it-yourself maintenance
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
●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.

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7-1. Essential information
opened from the inside due to
water pressure.
■Water level exceeds the floor
When the water level exceeds the floor and time has passed, the electrical
equipment will get damaged, the power windows will not operate, the engine and motor stop, and the vehicle may not
be able to get moving.
■Using an emergency escape ham-
mer*
Laminated glass is used in the wind- shield on this vehicle.Laminated glass cannot be shattered
with an emergency hammer*. Tempered glass is used in the windows on this vehicle.*: Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer, or aftermarket acces-
sory manufacturer for further informa-
tion about an emergency hammer.
WARNING
■Caution while driving
Do not drive on roads where the roads may be submerged or the water
may be rising. Otherwise the vehicle may be damaged and cannot move, as well as become flooded and set a
drift, which may lead to death.

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7-2. Steps to take in an emergency
When trouble arises
ing more difficult.
■Wheel nut wrench*1, 2
Wheel nut wrench is installed in luggage compartment. ( P.464)*1: If equipped
*2: If your vehicles does not provide a
wheel nut wrench, you can purchase
it from any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
 Fluid leaks under the vehicle.
(Water dripping from the air con-
ditioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature
gauge needle continually points
higher than normal.
 Changes in exhaust sound
 Excessive tire squeal when cor-
nering
 Strange noises related to the
suspension system
 Pinging or other noises related to
the hybrid system
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■While towing
●When towing using cables or
chains, avoid sudden starts, etc. which place excessive stress on the towing eyelets, cables or chains.
The towing eyelets, cables or chains may become damaged, bro-ken debris may hit people, and
cause serious damage.
●Do not turn the power switch off.
There is a possibility that the steer- ing wheel is locked and cannot be operated.
■Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.If not securely installed, towing eye-
lets may come loose during towing.
NOTICE
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the
suspension components.
If you think something is
wrong
If you notice any of the follow-
ing symptoms, your vehicle
probably needs adjustment or
repair. Contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

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7-2. Steps to take in an emergency
When trouble arises
■Brake system warning light (warning buzzer)
■Brake system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
If a warning light turns on or a warning buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then g oes
off, this does not necessarily indicate a malfunction in the sy stem.
However, if this continues to o ccur, have the vehicle inspected by
any authorized Toyota retailer or Toyota authorized repairer, o r any
reliable repairer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(Red)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. Continuing to drive the
vehicle may be dangerous.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in:
 The regenerative braking system;
 The electronically controlled brake system; or
 The parking brake system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is excessively hi gh
 Immediately stop the vehicle in a safe place.
Handling method ( P.481)

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7-2. Steps to take in an emergency
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Charging system warning light*
*: This light illuminates on the multi-information display.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Malfunction indicator lamp* (warning buzzer)
*: This light illuminates on the multi-information display (with 7-inch display only).
Warning lightDetails/Actions
Indicates the hybrid system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.481)
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning lightDetails/Actions
Indicates that the engine oil pressure is excessively low
 Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning lightDetails/Actions
Indicates a malfunction in:
 The hybrid system;
 The electronic engine control system; or
 The electronic throttle control system
 Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

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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 “Hybrid System Stopped Steering Power Low” is displayed
This message is displayed if the hybrid system 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 “Hybrid System Overheated Out-
put Power Reduced” is displayed
This message may be displayed when driving under severe operating condi-
tions. (For example, when driving up a long steep hill.) Handling method: P. 4 8 1
■If “Traction Battery Needs to be
Protected Refrain from the Use of N Position” is displayed
This message may be displayed when
the shift lever is in N.
As the hybrid battery (traction battery) cannot be charged when the shift lever
is in N, shift the shift lever to P when the vehicle is stopped.
■If “Traction Battery Needs to be Protected Shift into P to Restart” is
displayed
This message is displayed when the hybrid battery (traction battery) charge
has become extremely low because the shift lever has been left in N for a certain amount of time.
When operating the vehicle, shift to P and restart the hybrid system.
■If “Shift to P Before Exiting Vehicle” is shown
Message is displayed when the driver’s door is opened without turning the power switch to OFF with the shift lever
in any position other than P. Shift the shift lever to P.
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.439)

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7-2. Steps to take in an emergency
■If “Shift Out of N Release Accelera-
tor Before Shifting” is displayed
The accelerator pedal has been depressed when the shift lever is in N.
Release the accelerator pedal and shift the shift lever to D or R.
■If “Press Brake when Vehicle is Stopped Hybrid System may Over-
heat” is displayed
The message may be displayed when the accelerator pedal is depressed to
hold the vehicle while the vehicle is stopped on an incline, etc. The hybrid system may overheat. Release the
accelerator pedal and depress the brake pedal.
■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 hybrid system, operate the
hybrid system for approximately 5 min- utes to recharge the 12-volt 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)
●AHS (Adaptive High-beam System) (if equipped)
●Automatic High Beam (if equipped)
■If a message that indicates the mal-function of front camera is dis-played
The following systems may be sus- pended until the problem shown in the message is resolved. ( P.229, 439)
●PCS (Pre-Collision System) (if equipped)
●LTA (Lane Tracing Assist) (if equipped)
●AHS (Adaptive High-beam System) (if
equipped)
●Automatic High Beam (if equipped)
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control with full-
speed range (if equipped)
■If a message that indicates the mal- function of radar sensor is dis-played
The following systems may be sus- pended until the problem shown in the message is resolved. ( P.229, 439)
●PCS (Pre-Collision System) (if equipped)
●LTA (Lane Tracing Assist) (if equipped)
●Dynamic radar cruise control with full-speed range (if equipped)
■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.391)
■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.391)
■If “Radar Cruise Control Temporar- ily Unavailable See Owner’s Man-ual” is displayed (if equipped)
The dynamic radar cruise control with full-speed range system is suspended temporarily or until the problem shown
in the message is resolved. (causes and coping methods: P.229)

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7-2. Steps to take in an emergency
When trouble arises
■If “Radar Cruise Control Unavail-
able” is displayed (if equipped)
The dynamic radar cruise control with full-speed range system 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 Stop in a Safe Place See Owner’s Manual” is
displayed, follow the instructions accordingly. ( P.481)
●If “Exhaust Filter Full See Owner’s Manual” is displayed, follow the instructions accordingly. ( P.335)
●If “Oil Pressure Low Stop in a Safe Place See Owner’s Manual” is dis-
played, follow the instructions accord- ingly. ( P.389)
●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 See Owner’s Manual”
• “Hybrid System Malfunction” • “Check Engine”• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction” • “Hybrid System Stopped”• “Engine Stopped”
●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 Visit Your Dealer”• “12-Volt Battery Charging System
Malfunction Visit Your Dealer”
●If “Low Auxiliary Battery See Owner’s
Manual” is shown, • When the display goes off after sev-eral seconds (displays for about 6
seconds): Maintain the hybrid system operation for more than 15 minutes and charge the 12-volt battery.
• When the display does not go off: Start up the hybrid system using the procedures: P. 4 7 6
●If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is shown, the filters may be clogged, the air intake vents may be blocked, or there may be a gap in the
duct. Therefore, perform the following correction procedure.• If the air intake vents and filters of the
hybrid battery (traction battery) are dirty, perform the procedure on P.412 to clean them.
• If the warning message is shown when the air intake vents and filters of the hybrid battery (traction battery) are
not dirty, have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer immediately.
■If “Maintenance Required For Trac- tion Battery At Your Dealer” is dis-played
The hybrid battery (traction battery) is scheduled to be inspected or replaced. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately.
●Continuing to drive the vehicle without having the hybrid battery (traction bat-
tery) inspected will cause the hybrid system not to start.
●If the hybrid system does not start, contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.