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Red alert, door open alarm won't go away

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by louis.swordfish, Mar 31, 2015.

  1. louis.swordfish

    louis.swordfish New Member

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    Joined:
    Mar 31, 2015
    Location:
    Welwyn Garden City
    Your Mercedes:
    2006 c220 sport coupe
    Hi guys,
    This is my first post and I'm not sure whether it's an electrical or mechanical fault so forgive me if I've posted in the wrong section.

    My 56 plate c220 started displaying the red dashboard alarm telling me the drivers door is open,
    I've tried slamming the door making sure nothings caught in the mechanism and turning the car off and on. No luck, it won't go away.
     

    Attached Files:

    Last edited: Mar 31, 2015
  2. whitenemesis

    whitenemesis Senior Member

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    Joined:
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    Your Mercedes:
    CLS55 AMG '05
    Check correct operation of the driver's door courtesy light pin switch. The pin may be faulty leading the car to think the door is open. Do the interior lights go on and off automatically when the driver's door is opened/closed?
     
  3. television

    television Always remembered RIP

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    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    The should be the door switch, they can get dislodged on the C class. It could be on the A pillar lower half or just underneath the lock keep on B pillar.
     
  4. OP
    louis.swordfish

    louis.swordfish New Member

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    Welwyn Garden City
    Your Mercedes:
    2006 c220 sport coupe
    Hi and thanks for your reply, No idea what the light pin switch is do you have a picture of one? Yes the lights automatically come on when the door is opened so I've flicked the switch to permanently off for now
     
  5. OP
    louis.swordfish

    louis.swordfish New Member

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    Your Mercedes:
    2006 c220 sport coupe
    So I got a friend to show me where the door light pin was and turns out there's a plastic cover that surrounds the door lock mechanism which presses the pin down when the door is closed. This was missing, found it on my drive when I got home and fitted it back on.
    Thanks for the replies guys.
     
  6. television

    television Always remembered RIP

    Messages:
    164,074
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    Joined:
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    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    I have heard it is the seat belt that gets caught up in this and knocks it off.
     

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