the radiator is full but the heater is not working
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2003 Honda Element Question: Heater not working
Answer #1Visitor, December 30, 2010, 10:51
Check the heater core. Not an easy replacement.
Answer #2Paul Safranski from Safranski Bros Tire & Auto, April 19, 2011, 16:11Enthusiast
The thermostat maybe stuck open just enough that the coolant doesn't get a chance to warm up to operating temp. of approximately 185 degrees. Typically the simplest thing is the cause.