engine overheat TOYOTA iA 2016 Owners Manual (in English)

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iA_OM_OM99M17z_(U)
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5-1. Essential InformationIntroduction ....................... 418
5-2. Scheduled Maintenance Maintenance Monitor......... 420
5-3. Owner Maintenance Owner Maintenance Precautions ..................... 424
Hood.................................. 426
Engine Compartment Overview ......................... 428
Engine Oil.......................... 429
Engine Coolant.................. 431
Brake/Clutch Fluid ............. 434
Window Washer Fluid ....... 435
Body Lubrication ............... 436
Wiper Blades ..................... 437
Battery ............................... 440
Key Battery Replacement ................... 443
Tires .................................. 446
Light Bulbs ........................ 451
Fuses ................................ 460
5-4. Appearance Care Exterior Care ..................... 468
Interior Care ...................... 476 6-1. Parking in an Emergency
Parking in an Emergency ...................... 482
6-2. Flat Tire Spare Tire and Tool Storage ............................ 483
Changing a Flat Tire .......... 487
6-3. Battery Runs Out Jump-Starting .................... 497
6-4. Emergency Starting Starting a Flooded Engine ............................. 500
Push-Starting ..................... 501
6-5. Overheating Overheating ....................... 502
6-6. Emergency Towing Towing Description ............ 504
Tiedown Hooks .................. 505
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes .................. 507
Message Indicated on Display............................. 520
Warning Sound is Activated.......................... 522
6-8. When Trunk Lid Cannot be Opened
When Trunk Lid Cannot be Opened....................... 525
5Maintenance and Care6If Trouble Arises

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2-8. Driving Tips
Rocking the Vehicle
If you must rock the vehicle to free it from snow, sand or mud, depress
the accelerator slightly and slowly move the shift lever from 1 (D) to R.
WARNING
■Do not spin the wheels at more th an 35 mph (56 km/h), and do not
allow anyone to stand behind a wheel when pushing the vehicle
When the vehicle is stuck, spinning the wheels at high speed is dangerous.
The spinning tire could overheat and explode. This could cause serious
injuries.
NOTICE
Too much rocking may cause engine overheating, transaxle failure, and tire
damage.

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3-3. Transaxle
■Passing
For extra power when passing another vehicle or climbing steep
grades, depress the accelerator full y. The transaxle will shift to a
lower gear, depending on vehicle speed.
Some models:
The accelerator pedal may initially feel heavy as it is being depressed,
then feel lighter as it is depressed further. This change in pedal force
aids the engine control system in determining how much the accelerator
pedal has been depressed for performing kickdown, and functions to
control whether or not kickdown should be performed.
■
Climbing steep grades from a stop
To climb a steep grade from a stopped position:
Depress the brake pedal.
Shift to D or M1, depending on the load weight and grade steep-
ness.
Release the brake pedal while gradually accelerating.
■Descending steep grades
When descending a steep grade, shift to lower gears, depending on
load weight and grade steepness. Descend slowly, using the
brakes only occasionally to pr event them from overheating.
Driving Tips
WARNING
■Do not let the vehicle move in a di rection opposite to the direction
selected by the selector lever
Do not let the vehicle move backward with the selector lever in a forward
position, or do not let the vehicle move forward with the selector lever in the
reverse position. Otherwise, the engine may stop, causing the loss of the
power brake and power steering functions , and make it difficult to control
the vehicle which could result in an accident.
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3-5. Brake
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When Driving
Brake System
This vehicle has power-assisted brakes that adjust automatically
through normal use.
Should power-assist fail, you can st op by applying greater force than
normal to the brake pedal. But th e distance required to stop will be
greater than usual.
Foot Brake
WARNING
■ Do not coast with the engine stalled or turned off, find a safe place to
stop
Coasting with the engine stalled or turned off is dangerous. Braking will
require more effort, and the brake’s power-assist could be depleted if you
pump the brake. This will cause longer stopping distances or even an acci-
dent.
■ Shift to a lower gear when going down steep hills
Driving with your foot continuously on the brake pedal or steadily applying
the brakes for long distances is dangerous. This causes overheated brakes,
resulting in longer stopping distances or even total brake failure. This could
cause loss of vehicle control and a serious accident. Avoid continuous
application of the brakes.
■ Dry off brakes that have become wet by driving slowly, releasing the
accelerator pedal and lightly applyi ng the brakes several times until
the brake performance returns to normal
Driving with wet brakes is dangerous . Increased stopping distance or the
vehicle pulling to one side when braking could result in a serious accident.
Light braking will indicate whether the brakes have been affected.
■ To apply the brakes correctly
● Wear shoes appropriate for driving in order to avoid your shoe contacting
the brake pedal when depressing the accelerator pedal.
●Always depress the brake pedal with
the right foot. Applying the brakes with
the unaccustomed left foot could slow
your reaction time to an emergency sit-
uation resulting in insufficient braking
operation.

iA_OM_OM99M17z_(U)
2414-1. Climate Control System
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Interior Features
Set the mode selector dial to the position.
Set the temperature control dial to the cold position.
Set the fan control dial to the desired speed.
Turn on the air conditioner by pressing the A/C switch.
After cooling begins, adjust the f an control dial and temperature
control dial as needed to maintain maximum comfort.
■ Cooling
●When maximum cooling is desired, set the temperature control dial to the
extreme cold position and set the air intake selector to the recirculated air
position, then set the fan control dial to position 4.
● If warmer air is desired at floor level, set the mode selector dial to the
position and adjust the temperature control dial to maintain maximum com-
fort.
● The air to the floor is warmer than air to the face (except when the tempera-
ture control dial is set at the extreme hot or cold position).
Cooling
NOTICE
If the air conditioner is used while driving up long hills or in heavy traffic,
monitor the engine coolant temperature warning light to see if it is illumi-
nated or flashing ( P. 148).
The air conditioner may cause engine overheating. If the warning light is
illuminated or flashing, turn the air conditioning off ( P. 502).
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6If Trouble Arises
6-1. Parking in an EmergencyParking in an Emergency ...................... 482
6-2. Flat Tire Spare Tire and Tool Storage ........................... 483
Changing a Flat Tire.......... 487
6-3. Battery Runs Out Jump-Starting .................... 497
6-4. Emergency Starting Starting a Flooded Engine ............................. 500
Push-Starting .................... 501 6-5. Overheating
Overheating ...................... 502
6-6. Emergency Towing Towing Description ........... 504
Tiedown Hooks ................. 505
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes ................. 507
Message Indicated on Display ............................ 520
Warning Sound is Activated ......................... 522
6-8. When Trunk Lid Cannot be Opened
When Trunk Lid Cannot be Opened ...................... 525

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6-5. Overheating
Overheating
If the high engine coolant temperature warning light illuminates:
Drive safely to the side of the road and park off the right-of-way.
Put a vehicle with an automatic transaxle in park (P), a manual tran-
saxle in neutral.
Apply the parking brake.
Turn off the air conditioner.
Check whether coolant or steam is escaping from the engine com-
partment.
If steam is coming from the engine compartment:
Do not go near the front of the vehicle. Stop the engine.
Wait until the steam dissipates, then open the hood and start the
engine.
If neither coolant nor steam is escaping:
Open the hood and idle the engine until it cools.
Make sure the cooling fan is operat ing, then turn off the engine after
the temperature has decreased.
When cool, check the coolant level.
If it is low, look for coolant leaks from the radiator and hoses.
■If you find a leak or other damage , or if coolant is still leaking:
Stop the engine and call your Scion dealer.
Cooling fan
Cooling system cap
Coolant reservoir
If the high engine coolant temper ature warning light illuminates,
the vehicle loses power, or you hear a loud knocking or pinging
noise, the engine is probably too hot.
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iA_OM_OM99M17z_(U)
5036-5. Overheating
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If Trouble Arises
■If you find no problems, the engine is cool, and no leaks are
obvious:
Carefully add coolant as required (P. 431).
WARNING
■ Switch the ignition to off and make sure the fan is not running
before attempting to work near the cooling fan
Working near the cooling fan when it is running is dangerous. The fan could
continue running indefinitely even if the engine has stopped and the engine
compartment temperature is high. You could be hit by the fan and seriously
injured.
■ Do not remove either cooling system cap when the engine and
radiator are hot
When the engine and radiator are hot, scalding coolant and steam may
shoot out under pressure and cause serious injury.
■ Open the hood ONLY after steam is no longer escaping from the engine
Steam from an overheated engine is dangerous. The escaping steam could
seriously burn you.
NOTICE
● If the cooling fan does not operate while the engine is running, the engine
temperature will increase. Stop the engine and call your Scion dealer.
● If the engine continues to overheat or frequently overheats, have the cool-
ing system inspected. The engine could be seriously damaged unless
repairs are made. Consult your Scion dealer.

iA_OM_OM99M17z_(U)
5096-7. Warning/Indicator Lights and Warning Sounds
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If Trouble Arises
(Red)
High Engine Coolant Temperature Warning LightThe light flashes when the engine coolant temperature is
extremely high, and illuminates when the engine coolant
temperature increases further.
Handling Procedure:
Flashing light
Drive slowly to reduce engine load until you can find a
safe place to stop the vehicle and wait for the engine to
cool down.
Illuminated light This indicates the possibility of overheating. Park the vehi-
cle in a safe place immediately and stop the engine.
Refer to Overheating P. 502.
Do not drive the vehicle with the high engine coolant tem-
perature warning light illuminated. Otherwise, it could
result in damage to the engine.
Power Steering Malfunction Indicator Light
The light illuminates/flashes if the electric power steering
has a malfunction.
If the light illuminates/flashes, stop the vehicle in a safe
place and do not operate the steering wheel. There is no
problem if the light turns off after a while. Contact your
Scion dealer if the light illuminates/flashes continuously.
• If the indicator light illuminates/flashes, the power steer-ing will not operate normally. If this happens, the steer-
ing wheel can still be operated, however, the operation
may feel heavy compared to normal, or the steering
wheel could vibrate when turning.
• Repeatedly jerking the steering wheel left and right while the vehicle is stopped or moving extremely slowly will
cause the power steering system to go into protective
mode which will make the steering feel heavy, but this
does not indicate a problem. If this occurs, park the vehi-
cle safely and wait several minutes for the system to
return to normal.
SignalWarning

585Alphabetical index
iA_OM_OM99M17z_(U)
Interior Care ............................. 476Cleaning the Lap/Shoulder
Belt Webbing ...................... 479
Cleaning the Upholstery and Interior Trim ........................ 477
Cleaning the Window Interiors .............................. 479
Dashboard Precautions ........ 476
Interior Lights .......................... 407 Luggage Compartment Light.................................... 408
Map Lights ............................ 407
Overhead Lights ................... 407
Jack........................................... 483
Jump-Starting .......................... 497
Key Suspend Function.............. 93
Keyless Entry System ............... 88
Key removed from vehicle warning beep ......................... 524
Keys ............................................ 86 Key suspend function ............. 93
Smart Key ............................... 89
Label Information .................... 564
Lane-Change Signals .............. 180
Laser Sensor ............................ 211
Leaving Home Light System ................................... 177
Light Bulbs Replacement......................... 451
Specifications........................ 569
Lighting Control....................... 175
Lights-on reminder .................. 522
Lubricant Quality ..................... 567
Luggage Compartment Light ....................................... 408 Maintenance
Information............................ 418
Maintenance Monitor .............. 420
Manual Transaxle Operation ............................... 160
Recommendations for shifting ................................ 162
Map Lights ............................... 407
Message Indicated on
Display ................................... 520
Meters and Gauges ................. 148
Mirror Defogger ....................... 185
Mirrors Outside mirrors ..................... 113
Rearview mirror .................... 114
Odometer and Trip Meter ...................................... 149
Outside Mirrors........................ 113
Outside Te mperature
Display ................................... 153
Overhead Lights ...................... 407
Overheating ............................. 502
Overloading ............................. 135
Owner Maintenance Closing the Hood .................. 427
Engine Compartment
Overview ............................ 428
Key battery replacement....... 443
Opening the Hood ................ 426
Owner Maintenance Precautions ........................ 424
Parking Brake .......................... 188
Power Steering ........................ 203
Power Windows ....................... 116
Power steering warning buzzer..................................... 524
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