Question about 1984 Mercedes-Benz 190

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All four doors will not open. Door locks accuate with key in drivers door, trunk is only one that actually unlocks and can be opened, all other "sound" like they are unlocking but will not open. Can lock them and see buttons go down, unlock them and buttons go up with key in door. Doors will not open.

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  • Wayne Holden May 17, 2009

    When you say try and remove the rear seat, you do mean through the trunk as we cannot open any doors.



    This problem occured when car was driven, parked, key left in ingnition (I got it out via clothes hanger) and door shut WITHOUT locks being deliberatly accuated.



    Is sons (and our) first Mercedes and a project car so many things are worn out so not surprised to hear possible bad switch, just not familiar with MB systems and the book is inside the car.



    Thanks,

  • Wayne Holden May 17, 2009

    My rating as "not helpful" is not actually true, just not helpful YET!



    lastech, you sound very knowledgeable about the MB (your guru rank is probably not high enough) and welcome your assistance, just going to have to have a little patience with me/us as my experience is with GM/Ford/Chrysler and bigger stuff.

  • Wayne Holden May 17, 2009

    Ok. We got one door opened by cycleing the locks about 50 times. The other doors will open from the inside only. The outside handles are not functioning even when the lock knobs are all the way up either manually or by using the key in the door. Is there some type of electrical solenoid in the door latch that has to be powered or unpowered to make the outside handle work?

  • Wayne Holden May 18, 2009

    Ty, Ok, will remove rear seat tomorrow and see if pump is working or intermittent or if we have bad hoses or electircal problem. Lots to check but better to know that it was under rear seat. Just really weird that doors will open from inside only even when unlocked!

    Thanks. Wayne

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Hello,good day,seems your have a bad contact on driver and passenger switch door actuator,maybe loose contact or mechanical defect,which not sending a signal to your central locking pump,try to remove your rear seat,look your pump,right side,driving direction,lock and unlock your car,observe your pump is working,if not,check or replaces your switch door actuator,ty

Posted on May 17, 2009

Testimonial: "Good instructions, didn't exactly get the locks to work but gave us enough info to work the system and get the door open."

  • manuel domingo
    manuel domingo May 18, 2009

    hello,good day,try to open your rear door from inside,then remove your rear seat only, to check your central locking pump,could be vacuum or electrical connection,waiting for your comment,ty

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