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Volvo Driver seatbelt temporary fix with dental floss, and final replacement
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- čas přidán 17. 06. 2012
- On Saturday, the driver's seatbelt on our 1996 Volvo 850 would not extend and would only retract, i.e. get tighter. After a nerve-wracking drive home without a seatbelt, I took it apart and rigged a temporary fix with dental floss to get us through the weekend.
AS FAR AS I CAN TELL, THE TEMPORARY FIX DID NOT INHIBIT SAFE AND PROPER RESTRAINT OPERATION OF THE SEATBELT, BUT I CANNOT SUBSTANTIATE, AND DO NOT GUARANTEE, ANY SUCH CLAIM. IT JUST GOT US THROUGH THE WEEKEND.
The dental floss made manual the ability to extend or release the belt under normal driving conditions, which operation is normally automatic. It was annoying because as you drove, the belt would only get tighter and would not release without a gentle pull on the floss, which was needed to look around at intersections, while backing, and such. A piece of soft foam between the belt and collar bone would have been a welcome improvement.
On Monday I got a used replacement from Ithaca Foreign Car Service (Thanks, Dave, Jeremy, et al.!) and replaced the bad unit.
This video shows the replacement, the inertial device which seemed okay but was apparently no longer doing its job, then some details of the temporary fix with the floss.
I did forget to to video the feeding of the seatbelt through the side door post plastic panel. Also, posts in some fora state that a SRS error will be generated if the battery is not disconnected during this operation. Finally, the Torx bit is a probably a Torx 30, not a Torx 20 as I state in the video.
For my 2000 Volvo V40 (same as S40), thank you, that little tilting mechanism demo helped me understand why my used replacement didn't seem to be working. Put it in the vice at the right angle and it is working fine! Now I can bolt it in!
This bit, with the detail on the gravity switch, was exactly what I was looking for. Let's see if I can fix it without the floss.
So, did you fix it? I'm having the same stuck problem..
You didn't show how or why the dental floss was a temporary fix. Only r&r of assembly!
No fix without the floss, and I'm fighting getti
This video shows how to remove and reinstall the seat belt.
How to fix it when it won't feed out.... nada.
Nice video, can you explain some more how exactly you placed the dental floss?
Sorry, not really, that was over 2y ago, and I don't have the car any more.
Near the end of the video you can see where the floss goes into a plastic enclosure, and is attached to a device that controls the pawl; I am pretty sure the floss pulls toward the front end of the car when installed, at least for the driver's side seat belt. Normally the brass and plastic device (see 3:44 in the video) does this job, but apparently it had stopped working; I know not why.
And thanks for the compliment!
I just did this on my Volvo. I wasn't nearly as neat and tidy at prying open the plastic enclosure at the bottom of the device, but once inside found the gravity switch just as shown. In the demonstration of how it works you see the "finger" flip out when tilted in any direction. The finger sits in a curved slot of an arm that engages the seat belt and stops it from extending when the arm is pushed in by the finger. To bypass it you simply thread the floss through the curved slot in the arm so you can pull the arm back on demand. the gravity switch still works as well as it did before (which at least in my case is a bit hyperactive and always stopping the seat belt from extending.) The floss can be threaded through the slot in the cover when you reassemble everything to keep it available. My main takeaway from the experience is to be as gentle as possible when prying open the plastic enclosure that the gravity switch sits in. I broke the tab off and so I had to Jerry-rig it to stay closed with some rubber bands.
Nice Video.
Did you get an SRS error?
Care to share what the used replacement cost?
SRS: I don't think so; I may have disconnected the battery first (I remember going back to the shop to reset the radio).
Cost: Sorry, I don't remember and I don't have the paperwork, but it was nominal ($25). They were busy and let me take it off the parts car myself, which kept the cost down. I went to a you-pull-it place once for a bunch of parts and when I started pulling stuff out of my pockets, the guy at the counter, probably rolling his eyes, just said "$25" before I was done.