What was your final solution to the hatch problem. I'm having same thing on my 09 hatch.
From a little bit of searching I found your post. I'm hoping you could give me your best advice on cheapest and easiest fix. I've seen in my searches: passenger side part 80500-ELO18B needs replacing, or you can jump this part electrically, possible blown fuse, bad hatch button, or take to dealer for $350+ fix .
Looking for advice from somebody with direct experience with this.
Thank you, ---getting tired of crawling over back seats to manually open the hatch.