coolant temperature TOYOTA COROLLA 2018 Owners Manual (in English)

772. Instrument cluster
2
Instrument cluster
COROLLA_TMMMS_TMMC_U (01999-02509)
Tachometer
Displays the engine speed in revolutions per minute.
Multi-information display
The multi-information display presents the driver with a variety of driving-
related data including the current outside air temperature.
Speedometer
Fuel gauge
Display change button (for Canada)
Switches the trip information and instrument panel light control.
Display change button (for U.S.A.)
Switches the trip information.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Gauges and meters (vehicles with a mono-
chrome display)
The displayed content may differ depending on the type of
meter.
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852. Instrument cluster
2
Instrument cluster
COROLLA_TMMMS_TMMC_U (01999-02509)
WARNING
■The display at low temperatures
Allow the interior of the vehicle to warm up before using the display. At
extremely low temperatures, the display monitor may respond slowly, and
display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear
number appearing on the display. This lag could cause the driver to down-
shift again, causing rapid and excessive engine braking and possibly an
accident resulting in death or injury.
■ Cautions during setting up the display
As the engine needs to be running during setting up the display, ensure that
the vehicle is parked in a place with adequate ventilation. In a closed area
such as a garage, exhaust gases including harmful carbon monoxide (CO)
may collect and enter the vehicle. This may lead to death or a serious
health hazard.
NOTICE
■To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge
are in the red zone. In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (→ P. 531)

862. Instrument cluster
COROLLA_TMMMS_TMMC_U (01999-02509)
Tachometer
Displays the engine speed in revolutions per minute.
Multi-information display
Presents the driver with a variety of driving-related data.
Displays warning messages in case of a malfunction (→P. 489)
Outside temperature display
→P. 393
Shift position/gear position display
Displays the currently selected the shift position and gear position.
→P. 181, 184
Speedometer
Fuel gauge
Odometer and trip meter display/Instrument panel light control dis-
play
*
→P. 87, 88
Engine coolant temperature gauge
Displays the engine coolant temperature.
*: Canada only
Gauges and meters (vehicles with a color
display)
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892. Instrument cluster
2
Instrument cluster
COROLLA_TMMMS_TMMC_U (01999-02509)
■The meters and display illuminate when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The engine switch is in IGNITION ON mode.
NOTICE
■ To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone. In this case, immediately stop the vehicle in a safe place,
and check the engine after it has cooled completely. (→ P. 531)

4247-3. Do-it-yourself maintenance
COROLLA_TMMMS_TMMC_U (01999-02509)
WARNING
■When working near the electric cooling fan or radiator grille
Vehicles without a smart key system: Be sure the engine switch is off. With
the engine switch in the “ON” position, the electric cooling fan may automat-
ically start to run if the air conditioning is on and/or the coolant temperature
is high. ( →P. 435)
Vehicles with a smart key system: Be sure the engine switch is off. With the
engine switch in IGNITION ON mode, the electric cooling fan may automat-
ically start to run if the air conditioning is on and/or the coolant temperature
is high. ( →P. 435)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

4337-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_TMMMS_TMMC_U (01999-02509)
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the engine is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
(→P. 531)
■ Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
For the U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% cool- ant and 50% deionized water. (Minimum temperature: -31 °F
[-35° C])
For Canada: “Toyota Super Long Life Coolant” is a mixture of 55% cool- ant and 45% deionized water. (Minimum temperature: -44 °F
[-42 °C])
For more details about engine coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
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4788-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (01999-02509)
●Fluid leaks under the vehicle.
(Water dripping from the air co nditioning 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 cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spon gy feeling, pedal almost touches
the floor
If you think something is wrong
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5318-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (01999-02509)
●The engine coolant temperature gauge ( →P. 77, 86) enters the red
zone or a loss of power is experienced.
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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5338-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (01999-02509)
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.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fan and belts.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additives.
●Do not loosen the radiator cap and the
coolant reservoir cap while the engine
and radiator are hot.
High temperature steam or coolant
could spray out.

598Alphabetical index
COROLLA_TMMMS_TMMC_U (01999-02509)
Emergency flashers ................ 470
Engine....................................... 540ACCESSORY mode ............. 176
Compartment ........................ 429
Engine switch................ 171, 174
Hood ..................................... 425
How to start the engine......................... 171, 174
Identification number ............ 539
If the engine will not start ...... 521
Ignition switch (engine switch) ........... 171, 174
Overheating .......................... 531
Engine coolant ......................... 433
Capacity ................................ 542
Checking ............................... 433
Preparing and checking before winter....................... 263
Engine coolant temperature gauge.................................. 77, 86
Engine immobilizer system ...... 67
Engine oil ................................. 430 Capacity ................................ 540
Checking ............................... 430
Preparing and checking
before winter....................... 263
Engine switch .................. 171, 174
Entune Audio ........................... 273
Audio input ............................ 272
AUX port/USB port ..................................... 272
Bluetooth
® audio................... 320
CD player .............................. 290
iPod....................................... 296
MP3/WMA disc ..................... 290
Optimal use........................... 287
Portable music player ........... 272
Radio .................................... 288
Steering wheel audio
switch ................................. 338
USB memory ........................ 301
Entune Audio Plus
*
Entune Premium Audio*
EPS (Electric Power Steering) ..... 257
Function ................................ 257
Warning light......................... 481
Flat tire Vehicles with a spare tire...... 509
Floor mats .................................. 24
Fluid Brake .................................... 545
Continuously variable
transmission ....................... 544
Washer ................................. 439
Front interior light ................... 385
Front passenger occupant classification system .............. 47
Front seats ............................... 130 Adjustment............................ 130
Cleaning ............................... 411
Correct driving posture ........... 26
Head restraints ..................... 134
Seat heaters ......................... 383
Front turn signal lights ........... 191 Replacing light bulbs ............ 464
Turn signal lever ................... 191
Wattage ................................ 547
Fuel ........................................... 204 Capacity................................ 540
Fuel gauge........................ 77, 86
Fuel pump shut off system ... 479
Information............................ 548
Refueling .............................. 204
Type.............................. 540, 548
Warning light......................... 481
Fuel filler door ......................... 204
Refueling .............................. 204
Fuel pump shut off system..... 479
Fuses ........................................ 458
F