5-2. Steps to take in an emergency
If your vehicle overheats
If the needle of the engine coolant temperature gauge enters
the red zone
Stop the vehicle in a safe place and turn off the air condition-
Check to see if steam is coming out from the engine area.
If you see steam:
Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam:
Leave the hybrid system operating and carefully lift the
Check if the cooling fans are operating.
If the fans are operating:
Wait until the engine coolant temperature gauge begins to
fall and then stop the hybrid system.
If the fans are not operating:
Stop the hybrid system immediately and call your Toyota
The following may indicate that your vehicle is overheating:
The needle of the engine coolant temperature gauge enters the
The engine may be overheating.
“Hybrid System Overheat” is shown on the multi-information dis-
The power control unit may be overheating.
Follow the correction procedure as described below.