There is a button near the hazard light button to do that.
There should be a button on the dash board
button on the dash
how can you reset the headrests after deployment
No. No "kit" is available. Just replace the headrest with a new one from a dealer or a replacement from a junkyard.
A rear end collision will cause your head to press against the headrest. You might also be pressed forward during this type of collision, but the first movement is against the headrest.
First you have to take it apart to see what is broken then you can determine how to fix it.
find the "hole" in the back of the seat. ... wait a sec.. read your manual.
there is a yellow pull tab under the right rear headrest
In the back seat behind the rear headrest under the platform between the 2 rear winshield speakers.
there's instructions on this in the Manuel. look up headrest in the index and it'll take you to the page where it shows you how to rest it, very easy.
How to fold rear seat to mercedes c230 kompressor
Make sure your entire body touches the back of your seat and headrest