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Did you bleed the system? After engine cools down, remove radiator cap and top up coolant if necessary.
While bleeding cooling system, it is recommended to turn the heater on. Run engine for a rew minutes and if coolant does not drop, close radiator cap and run for 5 minutes. Stop engine and allow to cool. Recheck coolant level in radiator and repeat process till no more air are trapped in system.
Did you check the cooling fan? Is it working correctly?
Cooling fan used for ES300 is hydraulic and related to the power steering system.
As to the heater not blowing heated air, if the cooling system has air pockets, it would not work correctly.
Tuesday, October 19th, 2010 AT 7:50 AM