1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Drivers Seat Belt Problem

Discussion in 'General Mercedes-Benz Related Discussion' started by Jimbo1959, Feb 9, 2019.

  1. Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    I have noticed recently that the drivers seat belt in my car does not run smoothly at first fitting in the morning. When you attach it it restricts forward movement for several seconds, and becomes very tight, it's quite uncomfortable.

    It's almost as if someone had held onto the belt to prevent the normal easy movement when the driver leans across the car from the driver's seat while wearing it for example, it restricts normal movement. After approx. five seconds or so it begins to function normally and run in and out with no restriction, very strange , something I have never experienced in any car before.

    The problem only occurs when the belt has not been used for several hours, I have checked all the guides and feeds, to make sure that they are clean, with no contamination to no avail.

    Any suggestions, ideas would be appreciated.
     
    Wighty likes this.
  2. Cleck

    Cleck Senior Member

    Messages:
    164
    Likes Received:
    71
    Joined:
    Jul 23, 2016
    Location:
    Wakefield
    Your Mercedes:
    E220 SE MY15
    It's the seatbelt pre-tensioner designed to pull the belt tight around you to make sure it works properly when needed. It can be turned off via the MFD.
     
    Jimbo1959 likes this.
  3. Wighty

    Wighty Senior Member

    Messages:
    5,192
    Likes Received:
    2,431
    Joined:
    Aug 4, 2016
    Location:
    Sunny Essex
    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    Did this seat belt problem occur before your accident , because if it is since the accident maybe a sensor has been triggered by impact or something needs resetting on Star ?
    Has the drivers seatbelt clip receiver been "triggered" by the impact , and is it shorter now than the passenger seatbelt clip receiver ?
     
  4. AJD

    AJD Senior Member

    Messages:
    5,042
    Likes Received:
    963
    Joined:
    May 31, 2015
    Location:
    Suffolk by the Sea, UK.
    Your Mercedes:
    2012 W204 Sport ///AMG Line 4dr Auto, Obsidian Black, Light Grey Faux Leather
    The pre-tensioner is just giving you a re-assuring hug Jim, perfectly normal.
     
  5. John Laidlaw

    John Laidlaw Senior Member

    Messages:
    18,149
    Likes Received:
    4,550
    Joined:
    Nov 15, 2013
    Location:
    Wirral
    Your Mercedes:
    UnMercs BMW i8 Volvo XC90
    As above, and it can be switched of as mentioned. I did it with both my 212’s - didn’t bother me but frightened the bejeesus out of my passengers ...(although with the last 212 there may have been other reasons)
     
  6. Capra

    Capra Senior Member

    Messages:
    2,024
    Likes Received:
    442
    Joined:
    Jan 27, 2018
    Location:
    Gloucestershire
    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    pre-tensioner, I had the same when my car was new to me. In the end I disabled it, but it's always amusing when someone new gets in.
     
  7. Srdl

    Srdl Senior Member

    Messages:
    1,579
    Likes Received:
    655
    Joined:
    Oct 8, 2015
    Location:
    Hampshire
    Your Mercedes:
    GLC43 AMG 2018 (X253) Premium Plus
    Perhaps you’ve put in a bit of weight and didn’t notice the tightness before! (I miss the emojis)
     
  8. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    I
    I'm not sure if it started before or after Wighty and, I'll check the receivers to see if one is shorter than the other.

    Fingers crossed that it's just the pre tensioner needing disabled. :p
     
    Wighty likes this.
  9. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    When you say "you disabled it" Andy, was this done at a garage or, did you physically do it yourself?

    If so, how, I need to know. Please!!!!! :D
     
  10. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    Receivers are both the same length, phew! Now all I need is to find out the procedure for disabling the pre tensioners.


    Sent from my iPhone using Tapatalk
     
    Wighty likes this.
  11. John Laidlaw

    John Laidlaw Senior Member

    Messages:
    18,149
    Likes Received:
    4,550
    Joined:
    Nov 15, 2013
    Location:
    Wirral
    Your Mercedes:
    UnMercs BMW i8 Volvo XC90
    Jimbo1959 likes this.
  12. Capra

    Capra Senior Member

    Messages:
    2,024
    Likes Received:
    442
    Joined:
    Jan 27, 2018
    Location:
    Gloucestershire
    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    Hi Jim, sorry, missed this. Hopefully you've seen the post from John.
     
    Jimbo1959 likes this.
  13. Andy.M

    Andy.M Senior Member

    Messages:
    841
    Likes Received:
    92
    Joined:
    Feb 20, 2012
    Location:
    Rochester Kent
    Your Mercedes:
    2014 GLA250 Premium Plus, Night, AMG Exclusive Leather, Driving Assistance Packs COMAND DAB HK Audio
    I like the Mercedes Hug :)
     
  14. AJD

    AJD Senior Member

    Messages:
    5,042
    Likes Received:
    963
    Joined:
    May 31, 2015
    Location:
    Suffolk by the Sea, UK.
    Your Mercedes:
    2012 W204 Sport ///AMG Line 4dr Auto, Obsidian Black, Light Grey Faux Leather
    Me too
     
  15. grayb

    grayb Senior Member

    Messages:
    518
    Likes Received:
    50
    Joined:
    May 16, 2003
    Location:
    Kent
    Your Mercedes:
    E350CDI (S212) 2010
    I'm also OK being 'hugged'. It also 'hugged' me the other day, when the other half braked rather sharply. That was a surprise!
     
    AJD likes this.
  16. Andy.M

    Andy.M Senior Member

    Messages:
    841
    Likes Received:
    92
    Joined:
    Feb 20, 2012
    Location:
    Rochester Kent
    Your Mercedes:
    2014 GLA250 Premium Plus, Night, AMG Exclusive Leather, Driving Assistance Packs COMAND DAB HK Audio
    Yes, happened to me last night for the first time ever. On the motorway I was braking for a queue and the car thought it would take over. The brake pedal disappeared from under my foot and the belt tightened while the dashboard was bleeping rather loudly at me!
     
  17. grayb

    grayb Senior Member

    Messages:
    518
    Likes Received:
    50
    Joined:
    May 16, 2003
    Location:
    Kent
    Your Mercedes:
    E350CDI (S212) 2010
    Ooh! 'Brake Assist'. Only experienced that once, when I met a tipper lorry coming the other way round a bend on a B-road. Apparently my brake lights flashed too (my partner was in the car behind).
     
  18. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    Well I've now disabled the pre-tensioner so, we'll see in the morning whether or not I'm still getting a 'Hug'. :rolleyes:
     
    John Laidlaw likes this.
  19. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    720
    Likes Received:
    424
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    That seems to have done the trick. Thanks guys for all the help.


    Sent from my iPhone using Tapatalk
     
    John Laidlaw, Wighty and Capra like this.

Share This Page