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-   -   Self tensioning seat belts - any information about them? (

chrischeung 10-09-2012 03:18 PM

Self tensioning seat belts - any information about them?
My wife absolutely loves the self tensioning front belts on our 7er - the way it tenses then slightly releases. I don't think this feature has filtered down to other cars yet. I expect this feature is for safety, where it estimates how much to draw slack in, rather than comfort, though to her it feels that way.

I don't recall any marketing or release info about this feature. Does anyone have any insight or links to information about this feature?

filmoreslim 10-09-2012 08:50 PM

I recall my E65 had it. One of the only features I don't like

Deutsch100 10-09-2012 09:55 PM

My 2011 Mercedes GL550 also had them. You could turn it off, if you wanted to. Under Convenience in the settings, you could enable or disable. I always thought it was odd, that you could choose this!

f01driver 10-09-2012 10:51 PM

My e92 had this feature as well and I'm also not a big fan of this feature.

dbs600 10-10-2012 07:29 AM

The feature is fine, but the way in which it is programmed is not. When I start the engine, buckle the belt and reverse, the delayed tensioning interferes with looking back, over my shoulder. Very annoying.

AdamG13 10-10-2012 05:29 PM

Most of my passengers are surprised by it, but seem to think it's pretty cool. If it saves my neck in an accident I'm a fan as well, but I also agree with DBS about it interfering when attempting to back up the vehicle. Maybe they should delay the auto-adjust until you pass a certain threshold such as 20mph.

dbs600 10-10-2012 08:58 PM

Agreed, AdamG; 20 mph would work. Also forgot / realized again this morning that it interferes with wearing a tie and wanting to flap it over the seat belt so it doesn't get crushed / damaged; a delay would solve this as well!

chrischeung 10-11-2012 07:16 AM

I generally let my engine warm up a little, usually until the idle drops to around 800rpm (about 10-15 seconds), so the tugging action doesn't affect my reversing.

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