2018 TOYOTA YARIS iA coolant temperature

YARIS iA_OM_OM99Q46z_(U)
4976-5. Overheating
6
If Trouble Arises
■If you find no problems, the engine is cool, and no leaks are
obvious:
Carefully add coolant as required (→P. 425).
WARNING
■ Pull over to a safe location, then switch the ignition to off and
make sure the fan is not running befo re 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 Toyota 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 Toyota dealer.

YARIS iA_OM_OM99Q46z_(U)
5036-7. Warning/Indicator Lights and Warning Sounds
6
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
vehicle in a safe place immediately and stop the engine.
Refer to Overheating P. 496.
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
Toyota dealer if the light illuminates/flashes continuously.
SignalWarning

5046-7. Warning/Indicator Lights and Warning Sounds
YARIS iA_OM_OM99Q46z_(U)
■Power Steering Malfunction Indicator Light
●If the indicator light illuminates/flashes, the power steering will not operate
normally. If this happens, the steering 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 vehicle safely and wait
several minutes for the system to return to normal.
WARNING
■Do not drive with the brake system warning light illuminated. Contact
your Toyota dealer to have the brakes inspected as soon as possible
Driving with the brake system warning light illuminated is dangerous. It indi-
cates that your brakes may not work at all or that they could completely fail
at any time. If this light remains illuminated, after checking that the parking
brake is fully released, have the brakes inspected immediately.
In addition, the effectiveness of the braking may diminish so you may need
to depress the brake pedal more strongly than normal to stop the vehicle.
■ Do not drive with both the ABS warning light and brake warning light
illuminated. Have the vehicle towed to your Toyota dealer to have the
brakes inspected as soon as possible
Driving when the brake system warning light and ABS warning light are illu-
minated simultaneously is dangerous.
When both lights are illuminated, the rear wheels could lock more quickly in
an emergency stop than under normal circumstances.
NOTICE
■ Charging System Warning Light
Do not continue driving when the charging system warning light is illumi-
nated because the engine could stop unexpectedly.
■ Engine Oil Warning Light
● Do not run the engine if the oil pressure is low. Otherwise, it could result in
extensive engine damage.
● Do not run the engine if the oil level is low. Otherwise, it could result in
extensive engine damage.
■ High Engine Coolant Temperature Warning Light
Do not drive the vehicle with the high engine coolant temperature warning
light illuminated. Otherwise, it could result in damage to the engine.

YARIS iA_OM_OM99Q46z_(U)
5136-7. Warning/Indicator Lights and Warning Sounds
6
If Trouble Arises
If the following messages are displayed in the center display (Type B
audio), a vehicle system may be malfunctioning. Stop the vehicle in a
safe place and contact your Toyota dealer.
Displays in the following cases:
Stop Vehicle in Safe Place Immediately
DisplayIndicated Condition
Displays if the engine coolant
temperature has increased
excessively.
Displays if the charging system
has a malfunction.
Verify Display Content
DisplayIndicated Condition/ Action to be taken
The following message is dis-
played when the temperature
around the center display is high.
Lowering the temperature in the
cabin or the temperature around
the center display by avoiding
direct sunlight is recommended.

572Alphabetical index
YARIS iA_OM_OM99Q46z_(U)
Exhaust Gas ............................. 109
Exterior Care ............................ 462Aluminum Wheel Maintenance ....................... 468
Bright-Metal Maintenance ..... 467
Maintaining the Finish ........... 464
Plastic Part Maintenance ...... 469
Flasher Hazard warning..................... 186
Headlights ............................. 175
Flat Tire..................................... 477 Mounting the Spare Tire ....... 487
Removing a Flat Tire ............ 483
Floor Mat .................................. 128
Fluid Brake/Clutch ......................... 428
Washer ................................. 429
Fluids
Classification......................... 557
Fog Lights ................................ 179
Foot Brake ................................ 187
Front Seat ................................... 21
Fuel Filler lid and cap.................... 110
Gauge ................................... 151
Requirements ....................... 107
Tank capacity........................ 557
Fuel Consumption Display ..... 200
Fuel Economy Monitor ............ 199
Ending display ...................... 200
Fuel consumption display ..... 200
Fuses ........................................ 455 Panel description .................. 458
Replacement......................... 455
Gauges ..................................... 148
Glove Compartment ................ 408 Hazard Warning Flasher ......... 186
Hazardous Driving................... 127
Head Restraint ........................... 27
Headlights
Coming home light................ 177
Control .................................. 175
Flashing ................................ 176
High-low beam...................... 176
Leaving home light ............... 177
Hill Launch Assist (HLA) ........ 191
Hood Release........................... 419
Horn .......................................... 112
If a Warning Light Turns On or Flashes ........................ 501
Ignition
Switch ................................... 140
Ignition not switched off (STOP) warning beep............ 516
Illuminated Entry System ....... 402
Immobilizer System................. 120
Indicator Lights ....................... 158 Low engine coolant temperature ........................ 159
Wrench ................................. 159
Inside Trunk Release Lever .... 105
Inspecting Brake/Clutch
Fluid Level ............................. 428
Inspecting Coolant Level ........ 425
Inspecting Engine Oil Level ... 424
Inspecting Washer Fluid Level ....................................... 429
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