The following may indicate that your vehicle is overheating.
Correction procedures
1. Stop the vehicle in a safe place and turn off the air conditioning system, and then stop the engine.
2. If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
3. After the engine has cooled down sufficiently, inspect the hoses and radiator core (radiator) for any leaks.

If a large amount of coolant leaks, immediately contact your Toyota dealer.
4. The coolant level is satisfactory if it is between the "FULL" and "LOW" lines on the reservoir.

5. Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
If water was added in an emergency, have the vehicle inspected at your Toyota dealer as soon as possible.

6. Start the engine and turn the air conditioning system on to check that the radiator cooling fan operates and to check for coolant leaks from the radiator or hoses.
The fan operates when the air conditioning system is turned on immediately 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.)
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.
8. Check if "Engine Coolant Temp High Stop in a Safe Place See Owner's Manual" is shown on the multi-information display.
If the message does not disappear: Stop the engine and contact your Toyota dealer.
If the message is not displayed: Have the vehicle inspected at the nearest Toyota dealer.
WARNING
â– When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
The engine compartment may be very hot.
Failure to do so may cause the hands or clothing to be caught, resulting in serious injury.
NOTICE
â– 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.
â– To prevent damage to the cooling system
Observe the following precautions:
If the vehicle battery is discharged
If the vehicle becomes
stuckSystem description
General
The air conditioning system has the following
features:
In accordance with the temperature set using the
temperature control switch, the air conditioning
amplifier determines the outlet temperature
based on the input signals from various sensors.
In addition, corre ...
Glossary of sae and toyota terms
This glossary lists all sae-j1930 terms and abbreviations
used in this manual in compliance with sae
recommendations, as well as their toyota equivalents.
...
How to proceed with troubleshooting
Hint:
Use the following procedures to troubleshoot the occupant
classification system.
*: Use the intelligent tester.
Vehicle brought to workshop
Passenger airbag on/off indicator check
Dtc check (present and past dtc)*
Check for dtcs (see page rs-249 ).
Result ...