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Lexus: new window motor

  1. #1
    DrDiamond
    Guest

    new window motor

    hi

    Have a 90 LS400. Seems the window motor in the drivers side door has
    gone out. The switch draws power, but the window wont move. I have
    the internal door skin off, and removed the speaker, but can't figure
    out how to remove the mechanism.

    Any advice?

    thanks

  2. #2
    Jerohm
    Guest

    Re: new window motor


    "DrDiamond" <com> wrote in message
    news:com... 

    This is kind of spooky. I JUST went through the exact same situation with
    the my 90 LS400 last weekend. AFTER you removed the four mounting bolts for
    the motor/gear assembly, did you try the switch again? My motor WORKED! On
    the outer top edge of the door, there is a round circle cutout stuck over an
    access hole (actually there are a total of three or four of these. They
    allow access to the bolts that the glass mount to the mechanism). The
    second hole (?) from the outer edge allows you to adjust the window stop
    (ORANGE is visible). Quite by accident, played around with this adjustment.
    If it allowed the window to go up too high, the window froze, and I had to
    remove the 4 mounting bolts to get things to work again - major pain... BUT
    if I moved the adjustment DOWN - just a hair, it has been working ever
    since!

    I also cleaned out the switch. The contact points for the auto down feature
    of the driver's window had a lot of carbon. Be careful if you decide to do
    this because there are 4 or 5 contact springs that just sit on pins and may
    go flying out when you open it up. It is actually very easy if you watch
    out for those springs.

    If this doesn't fix YOUR problem, I could see NO way of removing JUST the
    motor. It looked as if the motor was attacted to the gear assembly. If
    your remove the bolts to the glass, I think you may be able to get out the
    entire mechanism out the outer most access (not the speaker hole).

    Update me with your progress.



  3. #3
    Jerohm
    Guest

    READ: PART 1A

    I couldn't tell from your original post if you had removed the vapor
    barrier. It needs to come off and its another major pain. I used a sharp
    knife to cut between the black sealant and the door. Try to have most of it
    stays with the plastic vapor barrier, but it doesn't matter much, because
    you are going to re-apply it to the door anyway. The black sealant is
    sticky as hell.

    Be careful when removing the push on connectors (?) used to hold the wires
    in place. They all WILL come out intact(hopefully) with a small knife
    pushing in at just the right spot(s). After you get the first one out,
    study how it works. They are all similar and have the same configuration
    that needs to be worked with the knife to pry them out.



  4. #4
    DrDiamond
    Guest

    Re: new window motor

    On Sun, 11 Jul 2004 10:06:30 GMT, "Jerohm" <net>
    wrote:
     

    OOO, good timing!

    I didnt get as far as removing any bolts attached to the motor. I'm
    not a very daring person, as far as cars go. But I'll give that a
    try.

    The switch still works, at least it makes the motor 'growl' quietly,
    so I'm sure the connection is good. That was my first suspect.
    Lexus's (Lexi?) are famously predictible, even in failure, so I
    probably have the same problem as you. I hope. hehehe
    I'll update when I have news.

    And if you happen to have any pictures of the door, that'd be killer.
    I think I'll take a few for illustration purposes. Hell, the only
    reason I was able to get the skin off is from the pics at
    www.carstereohelp.com They have some really good info about all
    models.

    Thanks for the tip
    Doc

  5. #5
    DrDiamond
    Guest

    Re: new window motor

    Follow up!

    I just undid all four bolts. Motor still wont move the window. It
    still whirrs and tries to move, but no dice. The cogged gear looks
    to be fine. I'm not sure how the motor comes out. I'll work on
    it more tomorrow when it's light out and i'm sober.

    Doc

    On Sun, 11 Jul 2004 13:29:57 -0700, DrDiamond
    <com> wrote:
     


  6. #6
    Jerohm
    Guest

    Re: new window motor


    "DrDiamond" <com> wrote in message
    news:com... 

    If the motor is still working, with the bolts removed, the window WON'T
    move, but the entire mechanism (gear and motor assembly) SHOULD move when
    the switch is activated. With the 4 bolts out, the window may be stuck, but
    WILL be able to be pulled down (and up for that matter) by hand. Work the
    window up an down a couple of times so that it moves freely. As the window
    is moved manually (by hand) up & down, the entire mechanism is hanging on
    that 6"(?) track connected to the glass. If your motor IS working, manually
    position the glass at some open point. You will need to use the switch
    (motor) to position the mechanism to line up with the 4 holes for the
    mounting bolts. Re-bolt and try power window, BUT DO NOT RAISE TO THE
    COMPLETELY CLOSED POSITION.

    If your got this far, loosen the window stop adjustment (it has orange on
    it) and position it WAY LOW so that you can never completely close your
    window. Try it one or two time and see if everything still works. The
    motor seems to get pretty hot, so I would take a beer break here for an hour
    or so.

    Loosen the window stop adjustment and close window JUST enough to be closed
    without it binding up too tight against the top of its frame. Tighten the
    stop adjustment and try the switch.
    Good Luck



  7. #7
    DrDiamond
    Guest

    Re: new window motor

    On Mon, 12 Jul 2004 10:12:12 GMT, "Jerohm" <net>
    wrote:
     

    Well, the motor makes noise, but the geared 'wheel' does not budge.
    I would assume that wheel should move through the assembly when
    the button is pressed. The window is easily moved by hand, especially
    when the motor is unmounted from the door. But you can only go so
    high...

    I can get most of the wheel/motor assembly to show up in the vacated
    speaker box hole. I'm not sure what to do next. Vis-a-vis removal.
    I should drive it to the shop (they love me and my car by now) and
    have them test the motor, or whatnot. I'm pretty sure it's burnt.

    With the 4 bolts out, the window may be stuck, but 
    Try as I might, I never found any orange adjustment.

    Thanks for your help
    Doc
     


  8. #8
    Jerohm
    Guest

    Re: new window motor


    "DrDiamond" <com> wrote in message
    news:com... 

    Well that is too bad. The only way "I" saw to get the motor mechanism out
    is to disconnect it from the window. There is a short track that connects
    the motor assembly to the glass. I would have thought that the "slide"
    could just be snapped out of the track... but I didn't discover how; it
    seems like you have to unbolt the track. Well I am sorry that your
    situation wasn't the same as mine. I would like to know how things work out
    for you (including what it ultimately cost you - I still may not be out of
    the woods).



  9. #9
    DrDiamond
    Guest

    Re: new window motor

    On Tue, 13 Jul 2004 03:34:00 GMT, "Jerohm" <net>
    wrote:
     

    I took it to the shop i"ve used before... they have a new
    manager, and he's a fucking asshole. Damn. That place was really
    cool before. Anyway, Ted the good guy said, since the motor still
    makes noise, it's likely the regulator gone faulty. it tells the
    motor not to move, as if the window is all the way up or down.
    I'll have to bang on it some or get a new regulator. Part cost
    was quoted around 165 bucks. Dear god, all that for a window.

    Oh well, it's a great car
    Doc

  10. #10
    Jerohm
    Guest

    Re: new window motor

    > >"DrDiamond" <com> wrote in message 
     

    Thanks for the update, and I feel for your situation. Did you try to clean
    out the switch? I am (reasonably) sure that the regulator he is taking
    about is in there. Besides the switches, there is a little solenoid and
    circuit board that is definitely associated with the drivers window. As I
    pointed out in a previous post, there was a ton of carbon built up on the
    associated contacts - which I cleaned up. However, there is something
    DIFFERENT between your case and mine. When my window DIDN'T work, I did NOT
    hear the motor AT ALL. If I was a betting man (which I am), I would think
    that the problem was STILL the motor/gear assembly - maybe the drive gear on
    the motor came loose or stripped. Did you mention to the guy that with the
    assembly unbolted, and the switch activated, there was no moving of the
    (drive) gears?? Just something to think about... (if you DO tackle the
    switch, please read my previous post about the little springs ... and be
    careful when you dissemble!) Further update appreciated!
    Thanks and good luck.




 

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