$4 Fix to Door Handle Micro Switch Woes
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  • 5 Post By ottawagta
  • 3 Post By russ1947
Cadillac STS Forum - 2005 through 2012 Discussion, $4 Fix to Door Handle Micro Switch Woes in Past Cadillac Vehicle Discussion; Here's how you can replace those pesky switches: Follow the handle removal steps in this thread: http://www.cadillacforums.com/forums...ement-how.html If you determine ...
  1. #1
    ottawagta is offline Cadillac Owners Member
    Automobile(s): 2006 STS
    Join Date
    Jul 2005
    Location
    Ottawa Valley
    Posts
    40

    $4 Fix to Door Handle Micro Switch Woes

    Here's how you can replace those pesky switches:

    Follow the handle removal steps in this thread: http://www.cadillacforums.com/forums...ement-how.html

    If you determine it is the microswitches, order a bunch of these (2/door, and get some spares): http://canada.newark.com/honeywell-s...35?Ntt=86r9335

    Remove the microswitch harness from the handle. With a fine screwdriver, remove the potting the bottom of the switches. Draw a diagram of how the wiring looks, and switches are placed in the holder. Once you have removed enough potting, the switches can be pushed out of the holder by pushing up on the bottom (wire side of the switches). Unsolder the wires from the switches (you made the diagram, right?)

    Here is a pic with the holder, switches removed, with new switch.
    http://www.cadillacforums.com/forums...1&d=1365120053


    Insert the new switches into the housing. They will only fit in one direction, and their body should be flush with the housing when in completely:

    http://www.cadillacforums.com/forums...1&d=1365120362

    Now, solder the wires accoring to your diagram.

    http://www.cadillacforums.com/forums...1&d=1365120941

    Lastly put potting compound on the connections. Do not use silicone as some kinds can damage the connections due to acid released during the cure. My low tech potting compound was a hot glue stick (it seems to work fine). It may be beneficial to first place the switch harness back into the handle assembly, to check how the wires exiting the switch housing relate to the handle body before potting (otherwise the wires may not clear the handle body).

    Installation is reverse to removal, make sure to read the note about this in the removal instructions posted at the start of this thread. Grease all plastic to plastic interfaces, it makes reassembly easier.

    Enjoy your work!
    Attached Images
    mckellyb, 3redlines, STSV8 and 2 others like this.

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  3. #2
    mreichel481980 is offline Cadillac Owners Member
    Automobile(s): STS 2005
    Join Date
    Mar 2015
    Age
    34
    Posts
    1

    Re: $4 Fix to Door Handle Micro Switch Woes

    Dear Sir.

    Thank you very much for your great work. I had this trouble too. Your instuction save a lot of my time and about $90 for the new part from Cadillac. Thank you again.

  4. #3
    cpetro45 is offline Cadillac Owners Member
    Join Date
    Jul 2011
    Posts
    5

    Re: $4 Fix to Door Handle Micro Switch Woes

    Yeah, thanks for this. I'm chasing down this issue now to. Both front doors, 05 sts, a real pleasure. They were intermittent with the weather, now neither have functioned for a few days. I'm concerned because it seems like neither antenna is working since the back doors don't unlock when I pull the front handles.

  5. #4
    russ1947 is offline Cadillac Owners Member
    Automobile(s): 2005 sts
    Join Date
    Apr 2015
    Posts
    1

    Re: $4 Fix to Door Handle Micro Switch Woes

    I did some research last night and came up with a switch that already has the wires attached. All you need to do is splice them in.

    switch.jpg

    ZD30SA01EA
    Switch Snap Action N.O./N.C.
    SPDT Pin Plunger PC Pins 3A
    125VAC 1.27N Screw Mount

    http://www.onlinecomponents.com/hone...tml?p=25257439
    mckellyb, nwjones18 and STSV8 like this.

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