I'm wondering if anyone else with a fit has this issue, I'll be driving and then randomly the doors will either lock or unlock totally by themselves. It even does this when the ignition is off. It's not super frequent but it concerns me that it will unlock randomly when I'm away and I'll get car hopped.

 

this may indicate failure of the master switch on drive's door when water gets to it

 

that would make sense. I know there was a recall on the switch but I don't think it was ever done(I'm not the first owner of course) would I have to replace the switch?

 

Call your Honda dealer they should perform the recall for free -- there were two recalls for this. Mine had the first one done when I had bought it but not the 2nd. My door locks also were working inconsistently until I had the recall performed. Also inquire if the airbag recall has been done... they should have done the switch when they did the airbag(s).