Page 275 of 436
2756-3. Do-it-yourself maintenance
6
Maintenance and care
Washer fluid tank (P.281)
Engine coolant reservoir ( P.275)
Fuse boxes ( P.306)
Engine oil filler cap ( P.276)
Engine oil level dipstick ( P.275)
Battery ( P.279)
Brake fluid reservoir ( P.278)
Radiator ( P.278)
Condenser ( P.278)
Electric cooling fan
With the engine at operating 
temperature and turned off, 
check the oil level on the dip- stick.
■Checking the engine oil
1 Park the vehicle on level 
ground. After warming up the 
engine and turning it off, wait 
Engine compar tment
Components
Checking and adding the 
engine oil 
     
        
        Page 278 of 436
![TOYOTA COROLLA HATCHBACK 2023  Owners Manual 2786-3. Do-it-yourself maintenance
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is 
a mixture of 55% coolant and 45% 
deionized water. (Minimum tem-
perature: -44°F [-42°C TOYOTA COROLLA HATCHBACK 2023  Owners Manual 2786-3. Do-it-yourself maintenance
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is 
a mixture of 55% coolant and 45% 
deionized water. (Minimum tem-
perature: -44°F [-42°C](/manual-img/14/59252/w960_59252-277.png)
2786-3. Do-it-yourself maintenance
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is 
a mixture of 55% coolant and 45% 
deionized water. (Minimum tem-
perature: -44°F [-42°C])
For more details about coolant, con-
tact 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 sys-
tem.
Check the radiator and con- denser and clear away any for-
eign objects. If either of the 
above parts is extremely dirty or 
you are not sure of their condi-
tion, have your vehicle 
inspected by your Toyota dealer.
■Checking fluid level
The brake fluid level should be 
between the “MAX” and “MIN” 
lines on the tank.
WARNING
■When the engine is hot
Do not remove the engine coolant 
reservoir cap. ( P.363)
The cooling system may be under 
pressure and may spray hot cool-
ant if the cap is removed, causing 
serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor 
straight 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 d amaging parts or 
paint.
Checking the radiator and 
condenser
WARNING
■When the engine is hot
Do not touch the radiator or con-
denser as they may be hot and 
cause serious injuries, such as 
burns.
Checking and adding the 
brake fluid 
     
        
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3637-2. Steps to take in an emergency
7
When trouble arises
able.
6Start the engine and turn the 
air conditioning system on to 
check that the radiator cool-
ing fan operates and to check 
for coolant leaks from the 
radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm 
that the fan is op erating by check-
ing 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 oper-
ate in freezing temperatures.)
7 If the fan is not operating:
Stop the engine immediately 
and contact your Toyota 
dealer.
If the fan is operating:
Have the vehicle inspected at 
the nearest Toyota dealer.
WARNING
■When inspecting under the 
hood of your vehicle
Observe the following precau-
tions. 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 sub-
sided. The engine compart-
ment may be very hot.
●Keep hands and clothing (espe-
cially a tie, a sca rf 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 reser-
voir caps 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 suffi-
ciently. 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 precau-
tions:
●Avoid contaminating the coolant 
with foreign matter (such as 
sand or dust etc.).
●Do not use any coolant additive.