Driving down the road the other night hit a bump, not all that big actually and I heard a hell of a loud noise and my head snapped forward, the headrests which are spring loaded activated for some reason. I guess this is meant for if you get rear ended so as to not get whiplash, but wow, now I can't get them to go back in. Took the tool and inserted it and heard the click but when I pull them back into their housing they don't want to stay, guess I'll take a trip to the dealer tomorrow. These cars are way too complicated. I nearly got whiplash from the thing that was suppose to prevent it Not sure why just a bump in the road would activate these to release, something not right there. I hope it never happens again. Maybe it's because my rear tires really need replacing and the car is riding rougher than normal, just ordered new rears last night, really let them go too long.

 

I've read of this happening before Neck-pro headrests. If your under warranty take it in. If you are not under warranty there are articles and you-tube videos of how to get them to go back. Good luck!

https://mbworld.org/forums/c-class-w...-headrest.html

 

Thanks I had watched the videos and I can't get it to stay closed, going to the dealer next week.

 

Spoke with the dealer today, I guess they are going to charge me for resetting the head rests, like a hundred bucks or so the service writer said. Every big bump I hit is going to cost me a hundred bucks in this car I guess.

 

I'm debating on whether or not to really complain at the dealer that this should be covered under warrantee? A bump should not set these things off, there was no wheel or tire damage. Anybody else had the headrests deploy? I'm just nervous it's going to happen again next bump I hit and I'll have to pay again to get them reset. According to the video's I've watched it does not look like too big a deal to put the headrests back in their housings where they belong, the guy at the dealer said to that "the internet makes everything look easy". That is a CLS though and those headrests look a little different than my 2012 E63 AMG.

 

Call a different dealer

 

Did they both deploy? It must have been some bump!

 

Yes, both of them. Anybody know how these things work. Is there a sensor near the rear bumper or something and soliniods in the headrests? Or is a mechanical thing with headrests themselves that go off from the shock of a bump? It could have something to do with the car is riding rough as the rear tires are so worn out, I milked them for 15000 miles and they are practically bald which makes the car ride bad. I think I'll just drop it off at this dealer, he said maybe 1/2 hour, so probably 60 bucks, the other dealer is so far away. I'm having the put on couple of new Bridgestone pole positions I got off tire rack and change the oil too. They are giving me a loaner for the day.

 

This has nothing to do with worn tires. Let's see what the stealer has to say.

 

More than likely the Stealer will say nothing, just pop them back in and charge me my 100 bucks or whatever, good thing I bought the extended warrantee for $4000.00

 

Mine popped out less than a week of ownership in my 2014 E63S. Dealer cldnt find a reason why it did that. Since then, it has been fine. Go figure.

 

Interesting, both mine popped out, I guess just the vibration from the bump, it was a gap where they were doing road work putting down pavement. When I got out of the car first thing I checked was the rims and tires, everything else was ok. Any idea how hard it was for them to put them back down Quarks? I'd still like to know if it's a purely self contained mechanical setup or if it's somehow tied into a sensor? I think it's just mechanical and when there is a jolt the pop out. It's the first time it's happened in 2 years of ownership for me, so it's rare. I still think having worn rear tires does not help as I do notice the car rides more rough, I'm going to have them check the suspension just to make sure everything is normal. No dash lights or anything.

 

According to page 65 of the 2016 the owner's manual, there are two types of Neck-Prohead restrains used - regular and 'luxury'. The manual shows you the way to reset both (the video provided earlier is for the Luxury type). It looks simple enough to reset ... you just need to use adequate force/pressure to push the cushion back into the frame. Have a look you might be able to save yourself some $$. As well the manual suggests the head restraints deploy with an impact from the rear - doesn't sound like a bump should cause this but who knows.

 

Yes, that's my main question is why did a bump deploy them? I tried to push them in but I'm disabled (paraplegic) and can't twist around and get a good enough grip and was trying to force them in with just one hand. I'll let you all know how much they charged me. Car is going in Weds and getting a Oil Change, new rear tires installed and the headrests fixed.

 

The chief mechanic could not figured out why both popped out. They fixed it up within 20 mins. They brought the car to the back so I didn't see them fix them.
Their theory was my car sensed that there was a imminent accident ie. another car behind mine got too fast and too close and then swerved away at last minute, hence triggering the presafe mechanism. There was no bump that resulted in mine.
I vaguely recall a car behind me, cld very well the reason for mine. *shrugs*

 

Wow, so maybe this system is more sophisticated than I originally thought. I don't recall though that my 2012 has any type of rear radar sensors as the distronic uses behind the grill? I do have back up camera but I don't think that would have anything to do with it? I dunno, maybe these headrests are just a purely mechanical self contained system that release the spring loading due to intense vibration as in the case of a rear ender? Ideas anyone, it would be good to know how these work. I will try to ask the service manager at the dealer but more than likely he will not know. I will google the workings of these again, but I've come up with no answers so far.