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Thread: Rear Hatch and Glass Handles Inoperable

  1. #1
    Join Date
    Nov 2006
    Posts
    184

    Default Rear Hatch and Glass Handles Inoperable

    This weekend I opened up my wiring harness in the rear hatch repairing the wires which were broken on both the left and right side. I've tested the wires from the trunk floor up to gate to verify continuity. Then I tested both micro switches for hatch and glass release and they test fine. I jumped 12V to the release and they function perfectly. Still the handles themselves don’t work….Anyone have any thoughts on what to look for next?
    1992 525i Touring M50 5spd Manual 230k+ miles - SOLD:-(

  2. #2
    Join Date
    Nov 2006
    Posts
    184

    Default

    Well I never got a response from anyone so hopefully this post will help someone else. My problem turned out to extensive corrosion in the splice point below in the harness below the rear distribution box.

    This is the harness in question
    Simply untape the mess and inspect for corrosion


    Corrosion
    You can see here the white powder from the copper corroding. The one of the wires had actually broken free.


    I repaired the slice point - rejoining the wires and EURKEA!!! Both the glass and lid handle now work flawlessly!!!!
    1992 525i Touring M50 5spd Manual 230k+ miles - SOLD:-(

  3. #3
    Join Date
    Oct 2004
    Location
    Honolulu
    Posts
    3,105

    Default This may be related to some of the

    bad wiring under the rear seat, look for more bad connections


    Vee ave vays of dealing vid your kind...........

  4. #4
    Join Date
    Nov 2006
    Posts
    184

    Default

    Quote Originally Posted by Blitzkrieg Bob
    bad wiring under the rear seat, look for more bad connections
    Yup - I posted my findings from this weekend above :-)
    1992 525i Touring M50 5spd Manual 230k+ miles - SOLD:-(

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