Not sure why no one as answered this, but on my 2015 Limited, you almost need two people to do this. One person squishes down the top of the seat material around each headrest post until you can see removable metal slide clips. The other person pulls those either with your fingers or needle nose pliers. Memorize the orientation of the clips. Once you pull them, your headrests will pull right out. Again, my 2015 and your 13 might be different but that’s how we did it on mine.
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