When trouble arises -> Steps to take in an emergency-If your vehicle overheats for Your Toyota Corolla 4 Door 2023

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7-2. Steps to take in an emergency  
hoses and radiator core (radi-  
ator) for any leaks.  
If your vehicle over-  
heats  
The following may indicate  
that your vehicle is over-  
heating.  
The engine coolant tem-  
perature gauge (P.86, 89)  
is in the red zone or a loss  
of engine power is experi-  
enced. (For example, the  
vehicle speed does not  
increase.)  
Radiator  
Cooling fan  
If a large amount of coolant leaks,  
immediately contact your Toyota  
dealer.  
“Engine Coolant Temp High  
Stop in a Safe Place See  
Owner’s Manual” is shown  
on the multi-information dis-  
play.  
4 The coolant level is satisfac-  
tory if it is between the “MAX”  
and “MIN” lines on the reser-  
voir.  
Steam comes out from  
under the hood.  
Correction procedures  
7
1 Stop the vehicle in a safe  
place and turn off the air con-  
ditioning system, and then  
stop the engine.  
2 If you see steam: Carefully lift  
the hood after the steam sub-  
sides.  
Reservoir  
“MAX” line  
“MIN” line  
If you do not see steam:  
Carefully lift the hood.  
5 Add engine coolant if neces-  
sary.  
3 After the engine has cooled  
down sufficiently, inspect the  
Water can be used in an emer-  
gency if engine coolant is unavail-  
388  
7-2. Steps to take in an emergency  
If steam is seen coming from  
able.  
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 may cause the  
hands or clothing to be caught,  
resulting in serious injury.  
6 Start 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.  
Do not loosen the coolant reser-  
voir cap while the engine and  
radiator are hot.  
High temperature steam or  
coolant could spray out.  
NOTICE  
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 these, turn the air  
conditioning system on and off  
repeatedly. (The fan may not oper-  
ate in freezing temperatures.)  
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  
7 If the fan is not operating:  
Stop the engine immediately  
and contact your Toyota  
dealer.  
Observe the following precau-  
tions:  
Avoid contaminating the coolant  
with foreign matter (such as  
sand or dust etc.).  
If the fan is operating: Have  
the vehicle inspected at the  
nearest Toyota dealer.  
Do not use any coolant additive.  
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.