1. Drive to the edge of the road, stop the car, engage the idle position, apply the handbrake. Turn off the air conditioner.
2. If coolant is leaking from the radiator or expansion tank or steam is coming out; turn off the engine, open the hood and wait until the steam evaporates. If neither steam nor liquid comes out, do not turn off the engine and check: does the cooling system fan work. If not, then turn off the ignition.
3. Additional control; tightness of the radiator, radiator hoses and the underside of the vehicle. It is acceptable for water to drip from the air conditioner after use. When the engine is running, be careful not to place your hands or clothing near the moving fan and V-belt.
4. If coolant leaks, turn off the engine immediately. Contact your Toyota dealer for any necessary repairs.
5. If no coolant leak is found, check the coolant expansion tank. If it is empty, add water to the tank approximately half full while the engine is running.
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Warning! Never attempt to remove the radiator cap if the engine and radiator are hot. Serious injuries can be caused by boiling liquid and steam escaping under pressure.
6. After the engine has cooled to normal temperature, check the fluid level in the tank again. If necessary, fill the tank halfway. A significant loss of coolant means that there are leaks in the cooling system. The cooling system should be checked at a Toyota workshop as soon as possible.