If you follow the upper radiator hose back to the engine block, it is located under the housing where the hose meets to block on the passenger side of the engine. Make sure to drain the fluid level out of the radiator lower than the point of the housing or you will have a mess once you start to unbolt the housing.
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The heat for the Toyota
highlander 2003 does not work untl after a 1/2 hour or more of driving.
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