Quote:
Originally Posted by Frank Lee
Maybe at the moment you selected "4" the compressor kicked off.
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That'd be my bet as well. A lot of vehicles automatically kick on the AC with the defogger (at least for a while). The idea is that the AC takes the humidy out to help defog. I personally think,the AC shouldn't be on unless I want it on. I'm working on putting in a relay on the compressor clutch so the AC compressor is disabled unless my AC button is manually pressed. In the meantime, I've unplugged my AC compressor clutch for the winter.