Toyota 2011 Tundra, Owner'S Manual

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5-2. Steps to take in an emergency
n Overheating
If you observe the following, your vehicle may be overheating.
l
The engine coolant temperature gauge enters the red zone or a loss of
power is experienced.
l Steam is coming from under the hood.
l
“ENGINE COOLANT HOT” is shown on the multi-information display
(vehicles with multi-information display).
CAUTION
n To prevent an accident or injury when inspecting under the hood of
your vehicle
l If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injury such as burns.
l Keep hands and clothing away from the fan and other belts while the
engine is running.
l
Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
n When adding engine coolant
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.