So, my LS400 was recharged with refrigerant, evidently it pissed it out overnight the leak is so bad, on top of this, the blower settings no longer function on medium or low, only high. I can't speculate on why this is and need ideas, and this happens whether or not the AC button is switched on

 

Did you have an A/C shop charge it? I'm pretty sure they would have put a dye in there to locate the leak.