Lights Dim
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This is a discussion on Lights Dim within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Every time i put my windows up and down my lights dim. Also, if i put more then one windows ...

  1. #1
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    Lights Dim

    Every time i put my windows up and down my lights dim. Also, if i put more then one windows up or down at the time the windows slow down and the lights get really dim. I am thinking battery alternator or a connection some where. What do you guys think?

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    Registered User EvoEatr's Avatar
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    Quote Originally Posted by johnbmackin View Post
    Every time i put my windows up and down my lights dim. Also, if i put more then one windows up or down at the time the windows slow down and the lights get really dim. I am thinking battery alternator or a connection some where. What do you guys think?

    Your on the right track, load test the battery, and check alternator output first, these are the first two steps of a lot of electrical troubleshooting problems. How many miles are on the car? What year? model?

  4. #3
    The Fruit mangostick's Avatar
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    my 2010 does this.. no noticeable light dimming.. but the windows drastically slow down when moving more than one at a time. Boils down to oem electrical systems that are only just adequate to handle the basic vehicle needs and nothing more. Especially at Idle.

    I second having your battery load tested though.. even better, pop it out of the car and have them test it independently.

    Also remember, that at a Idle you're alternator is not producing full voltage/amperage. So that coupled with a possibly weak battery.. yep, def get the symptoms you're seeing.

    Do you by chance have a healthy sound system in the car?
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  5. #4
    Registered User teflon_jones's Avatar
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    A third vote for testing the battery. How old is it? Sounds like it's starting to go.
    Scott
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  6. #5
    Registered User Heide264's Avatar
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    I suspect alternator. Does it do it when the engine is both off and on?
    Quote Originally Posted by Trainrex
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  7. #6
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    Problems solved,
    The battery needed to be replaced. My lights no longer get dimmer when i put the windows up. But, if i do multiple windows is slows downs a tiny amount but i am happy with this because the car is an 02' WRX that i bought when they originally launched years ago so i know its not gonna be perfect.
    Thanks guys for all of your help, i am glad i know where i can turn to when i got a car question.

  8. #7
    The Fruit mangostick's Avatar
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    good stuff!! Always nice to see problems remedied with simple solutions
    OBP 2010 5dr *traded*
    SWP 2013 FRS
    My name is Shawn, I'm a Devout Practicalist and I'm addicted to flat4's
    This page has had 1,666 visits
    SUCH IS MANGO!

  9. #8
    Registered User EvoEatr's Avatar
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    Quote Originally Posted by mangostick View Post
    good stuff!! Always nice to see problems remedied with simple solutions :d
    +1^

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