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2016 c250d coupe auto seatbelt passed not working

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by liamc, May 21, 2020.

  1. liamc

    liamc New Member

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    Have recently brought a 2016 c250d coupe. The seatbelt passer works on The passenger side however it doesn’t on the drivers side. Could anyone help?

    thanks,
     
  2. OP
    liamc

    liamc New Member

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  3. Dean Fletcher

    Dean Fletcher Senior Member

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    Mine started doing this when the battery was starting to go.
     
  4. OP
    liamc

    liamc New Member

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    With only one side working? When I brought it he did say the battery was flat
     
  5. Dean Fletcher

    Dean Fletcher Senior Member

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    Yeah on mine in the was only the drivers side. It came out but wouldn't go back in. And sometimes it wouldn't come out at all.
     
  6. OP
    liamc

    liamc New Member

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    Mine doesn’t work at all on the drivers side, no noise doesn’t even try
     
  7. Srdl

    Srdl Senior Member

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    Do you have the button on the fascia in the C Class to force the seat belt valet to work or are you just relying on it to do it automatically?
     
  8. Dean Fletcher

    Dean Fletcher Senior Member

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    Have you added any puddle lights or anything? Might be the control module.
     
  9. OP
    liamc

    liamc New Member

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    I think the only button is on the centre console however nothing comes out when pressed on drivers side
     
  10. OP
    liamc

    liamc New Member

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    I haven’t added any I think they come as standard
     
  11. Dean Fletcher

    Dean Fletcher Senior Member

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    After doing some research it seems that there can be a common fault with the micro switch inside the unit. To get to it I had to be a interior trim out job I'm afraid.
     
    Srdl likes this.
  12. Srdl

    Srdl Senior Member

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    Ok, I just wondered whether it was a door or seat sensor issue but it sounds like Dean has the answer ^
     
  13. OP
    liamc

    liamc New Member

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    Cheers for that mate, lucky the car is still in warranty as I have only recently brought it
     

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