Headrest adjustment doesn't work
 

I have a 98 C280 and neither of headrest adjustments work. The rest of seat adjustments work just fine. My question is, will replacing the switch fix it, or is this a common problem where the motor just breaks or whatever? Thanks for any input.

Can't say if your problem is the same as mine, and the cars are different too, but this may help....

http://v12uberalles.com/power_head_rest.htm

The C280 headrest mechanism is not the same as the one shown in the previous post. I have a post on what I did to fix mine. I am a little suspicious that both of yours are out at the same time. Search for "C280 headrest". My post is the 5th one down in the list that comes up.

Mike

Hey, I read your post and when I pulled the back of the seat off, I found the problem. The black plastic piece that is supposed to slide has come off the gear, and I can't get it back on. The motor turns perfectly, and gear just goes and goes, but I can't get the black piece's teeth to the gear. There is a stop on the top and bottom and I get it slide passed the stop. Any help would be appreciated.

Wow this is a really annoying problem. It's not even that I would adjust my headrest, it's just that knowing I can't is driving me crazy.

I have the same problem the driver side headrest
 

won't got up or down. I removed the back of the seat and found if I moved the black plastic away for the inside of the back of the seat it works. Or when I am in the car if I take of the weight of my shoulders off the area when this plastic piece is located it works. Haven't gotten around to try and figure out what exactly is wrong. But I have found this is a common problem in 98, 99 00 C280's. But as I said I can get a fix on the fix, so to say.

I would follow the instructions I wrote for removal of the mechanism and then once you have it out it should be much more obvious how to fix it or if something is actually broken. What I wrote at the time is way better than anything I can remember!

Mike