Lexus LX 570 2016 Service Manual page 558

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7-2. Steps to take in an emergency
WARNING
When inspecting under the hood of your vehicle
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Observe the following precautions.
Failure to do so may result in serious injury such as burns.
If steam is seen coming from under the hood, do not open the hood until the steam
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has subsided. The engine compartment may be very hot.
Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and
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belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-
ous injury.
Do not loosen the radiator cap or the coolant reservoir cap while the engine and radi-
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ator are hot. High temperature steam or coolant could spray out.
NOTICE
When adding engine coolant
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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.
To prevent damage to the cooling system
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Observe the following precautions:
Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
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Do not use any coolant additives.
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