I've had my R DX for about 2 weeks now so I'm not familiar with everything. I just got home an hour ago and noticed a lot of water dripping from a black tube near the front passenger side tire. Is this from the AC or something else? I didn't notice the AC on but I did have the temp set to auto at 73 degrees.

 

Yes, it's the AC. All cars do it.

Unless you have pushed the AC button so that "AC off" is displayed, the AC can cycle on and off in the background automatically, as needed to cool and/or dehumidify.

 

You can also just press the voice command button and say " ac off". Easy!

 

Especially noticeable if you park your car in a humid environment (and even when idling in traffic). All the Hondas I've owned (including the RDX) behave this way.

 

I had water on garage floor and windshield washers were not working it appeared the hose had come off. Its fixed and all is working fine. It may be a loose washer hose.