14. So you have to resort to what all the california forums describe (if you want to permanently remove the headrests, for example) and hacksaw a retaining tab on the trim in order to bend it out and rotate it out of the way:
View attachment 134024
15. Then you can remove the spring clip on the metal post inside the headrest assembly and release the cover off the posts.
View attachment 134025
16. Now the cover and foam should be removable with a little jiggling of the isofix sleeves and other complications at the bottom.
17. Then there's just another 24 pig rings to remove (!) and the cover will be free of the foam.
Bung them on a quick machine wash and you can reverse the steps to refit the covers and pretend it was easy, or...