Re water inside headlights solved.
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  • 2 Post By 1BadCadSTS
Cadillac STS Forum - 2005 through 2012 Discussion, Re water inside headlights solved. in Past Cadillac Vehicle Discussion; 07 1sf w washers on the headlights. This is totally unnecessary option. I've used the washers 2x in the last ...
  1. #1
    02603sec's Avatar
    02603sec is offline Cadillac Owners Fanatic
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    Re water inside headlights solved.

    07 1sf w washers on the headlights. This is totally unnecessary option. I've used the washers 2x in the last 6 yrs. both times wound up with wetness inside my headlights. Jack up front, pull front tires, pull inside right and left plastic pans. Do not take the whole thing apart. Undo the plastic fasteners on top side. There are only 2 bolts on top 8 mm i believe. Remove those. Remove both left and right 10 mm nuts inside front wheel well. Undo the side marker lights. Now slide the whole front facia assembly forward. The 3 10 mm nuts are now exposed for the headlight assemblies. Once the assemblies are free, pull the electric connection. Bench the assemblies. Using a 1/4 " socket remove both covers. You will find the worst designed ever rubber gaskets. These are the problem. If you have the headlight washers or a power washer or a high pressure car wash, water will get in. With the covers off, turn upside down, drain water. let sit until all water has evaporated. Reinstall, but use silicone sealer on bothe sides of the rubber gaskets. Clean reinstall should last for a couple yrs in an average climate.

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  3. #2
    Ludacrisvp's Avatar
    Ludacrisvp is offline Cadillac Owners Connoisseur
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    The headlight washers have _nothing_ to do with moisture in the headlight.

    There is way more water and pressure in a car wash than what those can ever put out.

    Any time you clean your windshield when your lights are on those will spray 3 blasts every 5 cleanings per ignition cycle.

  4. #3
    1BadCadSTS's Avatar
    1BadCadSTS is offline Cadillac Owners Connoisseur
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    Pull the jumper in the fuse box. Deactivated mine. While I don't agree they cause the water in the headlamp issue I do agree they are useless unless you like spraying the front end of your clean car on the highway so it can streak and a waste washer fluid
    jzamo and jzamo like this.

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    mckellyb is offline Cadillac Owners Enthusiast
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    Re: Re water inside headlights solved.

    They're perfect for icy/grimy conditions, however.

    I do believe the washers, both windscreen and headlamp, use heated water.

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    1BadCadSTS's Avatar
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    Quote Originally Posted by mckellyb
    They're perfect for icy/grimy conditions, however.

    I do believe the washers, both windscreen and headlamp, use heated water.
    No. Only the v does.

  7. #6
    PontiacV8's Avatar
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    Re: Re water inside headlights solved.

    Quote Originally Posted by 1BadCadSTS View Post
    No. Only the v does.
    ...and export STS does (all european sigma-based STS V6 and V8)...
    XA7 - WASHER NOZZLES, HEATED, WINDSHIELDS HTD W/S NOZ (XA7)

    ...headlamp washer nozzles/sprayer are not heated....

  8. #7
    EChas3's Avatar
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    Re: Re water inside headlights solved.

    I've never had any trouble with mine & have used high-pressure car washes about a dozen times a year for four years. The headlights on the 2007 are fine, too.

    However, we do keep the cars garaged at night and Wisconsin sun damage is a non sequitur.

  9. #8
    Ludacrisvp's Avatar
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    Re: Re water inside headlights solved.

    I can only see disabling the headlight washer in a few situations:
    1. Save on washer fluid.
    2. Prevent washer fluid streaks down side of car... but this is rather pointless as you still get some on the hood from the hood mounted sprayers.
    3. When you have previously lost a cover to the sprayer (1BadCadSTS)


    Speaking of this ...

    Anyone converted to wiper arm mounted washer sprayers and removed the hood mounted ones?
    I believe you get better controlled usage of the fluid when arm mounted sprayers are used.
    The previous gen STS / DTS I believe had 2 on each arm for proper coverage.

  10. #9
    1BadCadSTS's Avatar
    1BadCadSTS is offline Cadillac Owners Connoisseur
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    Yup lost one that sucked!

  11. #10
    EChas3's Avatar
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    Re: Re water inside headlights solved.

    I had blade-mounted sprayers on my Roadmaster. As I recall, the two nozzles per blade were quite stingy and had great coverage. I never had an issue in 225,000 Midwest miles of use.

    On the STS, I am amazed that the headlight washers use so little. Windshield coverage is fine (unless there's snow on the hood.)

  12. #11
    02603sec's Avatar
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    I dont think the flaps are opening, therefore the waterstream shoots directly at the highly engineered gasket.

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