Cooling System Pressure Cap
The cap must be fully tightened to prevent the loss of engine coolant (antifreeze), and to ensure that engine coolant (antifreeze) will return to the radiator from the coolant recovery bottle.
The cap should be inspected and cleaned if there is any accumulation of foreign material on the sealing surfaces.
WARNING!
• The warning words “DO NOT OPEN HOT” on
the cooling system pressure cap are a safety precaution.
Never add engine coolant (antifreeze)
when the engine is overheated. Do not loosen or
remove the cap to cool an overheated engine. Heat
causes pressure to build up in the cooling system.
To prevent scalding or injury, do not remove the
pressure cap while the system is hot or under
pressure.
• Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or engine
damage may result.
See also:
If Your Engine Overheats
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate action.
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• In city traffic — while stopped, place t ...
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