radiator cap TOYOTA COROLLA 2021 Owners Manual (in English)

4667-3. Do-it-yourself maintenance
COROLLA_U
1.8 L 4-cylinder (2ZR-FAE) engine
Washer fluid tank ( P.474)
Engine coolant reservoir ( P.470)
Fuse boxes ( P.492)
Engine oil level dipstick ( P.467)
Engine oil filler cap ( P.468)
Battery ( P.472)
Brake fluid reservoir ( P.471)
Radiator ( P.471)
Condenser ( P.471)
Electric cooling fan
Engine compar tment
Components

4677-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
2.0 L 4-cylinder (M20A-FKS) engineWasher fluid tank ( P.474)
Engine coolant reservoir ( P.470)
Fuse boxes ( P.492)
Engine oil filler cap ( P.468)
Engine oil level dipstick ( P.467)
Battery ( P.472)
Brake fluid reservoir ( P.471)
Radiator ( P.471)
Condenser ( P.471)
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
more than 5 minutes for the
oil to drain back into the bot-
tom of the engine.Checking and adding the
engine oil

4707-3. Do-it-yourself maintenance
COROLLA_U
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines (type A) or “MAX”
and “MIN” lines (type B) on the
reservoir when the engine is
cold.
Ty p e A
Reservoir cap
“FULL” line
“LOW” line
I f t he le ve l is on o r be low th e “L O W ”
line, add coolant up to the “FULL”
line. ( P.550)
Ty p e B
Reservoir cap
“MAX” line
“MIN” line
If the level is on or below the “MIN”
line, add coolant up to the “MAX”
line. ( P.550)
■Coolant selection
Only use “Toyota Super Long Life
Coolant” or a similar high quality
ethylene glycol ba sed non-silicate,
non-amine, non-nitrite, and
non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is
a mixture of 50% c oolant and 50%
deionized water. (Minimum tem-
perature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is
a mixture of 55% c oolant 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.
Checking the engine cool-
ant
WA R N I N G
■When the engine is hot
Do not remove the engine coolant
reservoir cap.
The cooling system may be under
pressure and may spray hot cool-
ant if the cap is removed, causing
serious injuries, such as burns.

5518-2. Steps to take in an emergency
8
When trouble arises
COROLLA_U
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4 The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines (type
A) or “MAX” and “MIN” lines
(type B) on the reservoir.
Ty p e A
Reservoir cap
“FULL” line
“LOW” line
Type BReservoir cap
“MAX” line
“MIN” line
5 Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Type A
Type B
6 Start the engine and turn the
air conditioning system on to

5528-2. Steps to take in an emergency
COROLLA_U
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 operating by check-
ing the fan sound and air flow. If it is
difficult to check th ese, 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.
WA R N I N G
■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 scarf or a muffler)
away from the fan and belts.
Failure to do so m ay cause the
hands or clothing to be caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir 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 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.