Lucky13 Posted June 7, 2009 Share Posted June 7, 2009 The 15 amp fuse under the dash that controls the panel for the AC, Defrost, thermostat, fan...all those buttons, is always blown. I replace it and when I crank it up again it blows again. Sooo.... any thoughts? Quote Link to comment Share on other sites More sharing options...
90LS400Lexus Posted June 7, 2009 Share Posted June 7, 2009 Hi, what year is the car? Quote Link to comment Share on other sites More sharing options...
curiousB Posted June 8, 2009 Share Posted June 8, 2009 Well something is drawing too much current. So it points to something that worked before but now somehow is drawing more current. I doubt the rear defrost as that is a resistor in essence. If it were to get scratched it would become higher resistance and lower current. To isolate the blower from other AC stuck how about run the car on high heat and fan full speed. If it blows then it seem to point to blower motor. Maybe bearings starting to seize up, dirty cabin filter restricting blower, or something binding on the blower wheel. These would cause the current to rise on the blower motor and possibly blow fuse. If it only occurs on AC it could be the compressor clutch which is a solenoid. If it has overheated and the windings got burnt then it could be lower resistance and drawing more current. Quote Link to comment Share on other sites More sharing options...
Lucky13 Posted June 13, 2009 Author Share Posted June 13, 2009 Well even if the AC is turned off it blows when I crank it up. Quote Link to comment Share on other sites More sharing options...
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