2018 TOYOTA COROLLA iM coolant

2436-3. Do-it-yourself maintenance
6
Maintenance and care
COROLLA iM_U (OM12M42U)
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor stra ight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

2907-2. Steps to take in an emergency
COROLLA iM_U (OM12M42U)
●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

3187-2. Steps to take in an emergency
COROLLA iM_U (OM12M42U)
●The engine coolant temperature gauge ( →P. 74) enters the red
zone or a loss of power is exper ienced (for example, the vehicle
speed does not increase).
● 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
1
2
3
1
2

3197-2. Steps to take in an emergency
7
When trouble arises
COROLLA iM_U (OM12M42U)
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan opera tes and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately 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.)
If the fan is not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle in spected at the nearest Toyota dealer.
4
1
2
3
5
6
7

3207-2. Steps to take in an emergency
COROLLA iM_U (OM12M42U)
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. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
● Do not loosen the coolant reservoir cap while the engine and radiator are
hot.
High temperature steam or coolant could spray out.
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.

3288-1. Specifications
COROLLA iM_U (OM12M42U)
Cooling system
Capacity
Vehicles with a continuously variable transmission
6.1 qt. (5.8 L, 5.1 Imp. qt.)
Vehicles with a manual transmission
5.9 qt. (5.6 L, 4.9 Imp. qt.)
Coolant type
Use either of the following. • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO SC16HR11 or DENSO SC20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust spark plug gap.

3438-1. Specifications
8
Vehicle specifications
COROLLA iM_U (OM12M42U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

376Alphabetical index
COROLLA iM_U (OM12M42U)
Emergency flashers ................ 282
Engine....................................... 326Compartment ........................ 238
Engine switch........................ 128
Hood ..................................... 235
How to start the engine................................. 128
Identification number ............ 325
If the engine will not start ...... 314
Ignition switch (engine switch) ................... 128
Overheating .......................... 318
Engine coolant ......................... 242 Capacity ................................ 328
Checking ............................... 242
Preparing and checking before winter....................... 192
Engine coolant temperature gauge........................................ 74
Engine immobilizer system ...... 66
Engine oil ................................. 239
Capacity ................................ 326
Checking ............................... 239
Preparing and checking before winter....................... 192
Engine switch .......................... 128
EPS (Electric Power Steering)...... 186 Warning light ......................... 293 Flat tire
Vehicles with a spare tire...... 303
Floor mats .................................. 22
Fluid Brake .................................... 331
Clutch ................................... 330
Continuously variable transmission ....................... 329
Washer ................................. 249
Front interior light ................... 204 Wattage ................................ 332
Front passenger occupant classification system .............. 45
Front personal lights............... 204
Wattage ................................ 332
Front seats ................................. 95 Adjustment.............................. 95
Cleaning ............................... 223
Correct driving posture ........... 24
Head restraints ....................... 98
Front sensor ............................ 155 Automatic High Beam ........... 155
LDA (Lane Departure Alert)................................... 155
PCS (Pre-Collision system)......... ...................... 155
Precautions........................... 156
Front turn signal lights ........... 139 Replacing light bulbs ............ 276
Turn signal lever ................... 139
Wattage ................................ 332F