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Thread: Keyfob functions only when ignition switch is in position 4 & 5

  1. #1
    Join Date
    Nov 2012
    Location
    Washington, DC
    Age
    40
    Posts
    14

    Keyfob functions only when ignition switch is in position 4 & 5

    Hello all,

    My 2004 Marauder's two factory keyfobs operate only when the ignition switch is in position 4 or 5 (see attachment; position 3 is the "off" position). After nearly ten years of owning this wonderful machine, the issue started happening yesterday after arriving home.

    I have since replaced both fobs' batteries and attempted to reprogram them both via the programming procedure described in the owner's manual (attached) and via steps described in other posts on this fantastic site, but to no avail. The only "action" that occurs after conducting the manual-described procedure is the following:


    • When I press the brake pedal, the locks "activate" and move to the "locked" position.


    In addition, and simultaneous to, this keyfob issue, the following phenomenon also has begun taking place:


    • Key removed from ignition.
    • Passenger-side door opened.
    • Automatic lock button pressed.
    • All door locks proceed to locked position, then, one second later, unlock. This is the locking procedure that normally occurs when the key is left in the ignition.


    Any leads to help resolve and solve this dual mystery would be greatly appreciated.

    Update #1: I've made an appointment with my wizbang former Ford mechanic; will revert after he assesses the issue.
    Attached Images Attached Images
    Last edited by mp-rdp; 06-16-2021 at 12:00 PM.

  2. #2
    Join Date
    Aug 2011
    Location
    Wisconsin
    Posts
    4,240
    Changing the battery will not require reprogramming. Must be another issue. Good luck!

    WLB
    BB#1) 1996 ImpalaSS - 16,500 miles - 100% stock
    ______________________________ ___________

    BB#2) 2003 Marauder (300a) - 34k miles - Daily Driver
    #2912 of 7093
    Conceived 8/6/2002
    Delivered 9/19/2002
    Adopted 8/10/2011
    Trilogy 242 - Self Installed 9/9/12 (0-60 5.5 sec)
    Pioneer 6x8 Front
    Legacy 600w 6x9 Rears
    JL 6.5 SubWoofer
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    FBM CHMSL with Strobe mod 7/1/12
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    Sparta FOMOCO Racing 8.8 Girdle
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    ______________________________ ________________

    Rex "SC Cheesehead" Weinbender 11-14-13
    Ed "Baaad GN" Linthicum 8-6-2014

  3. #3
    Join Date
    Apr 2010
    Location
    South Florida
    Age
    32
    Posts
    1,764
    Usually when the doors unlock after pressing the lock switch means the driver door is open and the key is in the ignition so You don't lock The keys in the car while it's running. You may have a problem with the door striker mechanism inside the door.


    Sent from my iPhone using Tapatalk Pro

  4. #4
    Join Date
    Oct 2005
    Location
    Southwest Florida, Lee County
    Age
    52
    Posts
    3,251
    I have a spare DDM (driver door module) but you can program your existing fobs to it easily. Let me know if you need it.
    '04 Silver Marauder w/ sunroof - HID lighting, JL Audio / Eclipse DVD/NAV/iPod/camera, 4.10's, 2" drop, Progard Bumper Baffle, Delete tips, Billet Pedals, BC4E dead pedal, Lidio Tune, Mach1 chin spoiler, K&N CAI, TCE SS lines, Super40's, tinted tails, SS Inserts, Heinous Control Arms, Real oil gauge, Steeda UDP, lighted door handles.

    2004 Mercury Marauder
    Born March 2004, adopted October 2005. Sold January 2012, adopted AGAIN January 2016
    2,187 of 3,214
    997 in Silver Birch
    448 with light flint interior
    304 with heated seats
    336 with sunroof

  5. #5
    Join Date
    Nov 2012
    Location
    Washington, DC
    Age
    40
    Posts
    14
    All,

    After some scheduling delays, my mechanic was finally able to dive into his issue. After performing computer-based tests and making several other checks, he deduced that--as Bad Merc mentioned earlier in this thread--the driver door module (DDM) had failed and needed to be replaced. He found no other electrical or mechanical failures in the vehicle.

    Will revert when the work is completed.

    (Replacement DDM)
    Untitled.jpg
    Last edited by mp-rdp; 09-16-2021 at 09:02 AM.

  6. #6
    Join Date
    Nov 2012
    Location
    Washington, DC
    Age
    40
    Posts
    14
    All,

    The new driver door module (DDM) has been installed. All issues described in this thread are now resolved/fixed!!

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