Lexus 2008 ES350 Owner's Manual page 406

5-2. Steps to take in an emergency
STEP 7
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
Overheating
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If you observe the following, your vehicle may be overheating.
The engine coolant temperature gauge enters the red zone or a loss of power is
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experienced.
Steam is coming from under the hood.
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CAUTION
To prevent an accident or injury when inspecting under the hood of your vehicle
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Keep hands and clothing away from the fan and other belts while the engine is
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running.
Do not loosen the radiator cap while the engine and radiator are hot.
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Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
NOTICE
When adding engine coolant
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Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine.
406
Install the reservoir cap.
Make sure that the engine cool-
ant reservoir hose is positioned
as shown in the illustration.