Long story short, I made the stupid decision to put a car battery from one of our other cars into our Optima to test if it needed a new battery (old one wasn't holding a charge, should have just replaced it lol). Immediately after connecting the new battery, the car honked and I saw the fuse by...

The other day I changed my cabin filter. It started getting hot here in Texas so I turned my temperature all the way down and the AC on. When the dial is at 3, I get no noise, but once I hit that 4 it sounds like something is out of place. I rechecked the filter to make sure it was installed...

I`ve got a 2012 EX that the AC and Heat both work but the blower fan hardly pushes anything out. Is there a common problem that causes this? Stuck door or leaking vacuum switch perhaps??