Question about Subaru Impreza

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I own a (pre owned) 2004 Subaru Impreza TS wagon, purchased in June 2008. I have an issue with the vehicle blowing the low beam passenger side headlight. The light blew on my first test drive and was replaced by the dealer prior to the transaction. I have since replaced the bulb 4x. The most recent replacement only lasting 5000Km. (1 oil change). The bulb works great for several weeks, then becomes randon, working by times and not at others. I colided with a deer on that side a year ago, but it hit the fender just behind the headlight assembly & did not blow any of the bulbs. There is only a small cosmetic dent in the fender behind the headlight assembly. I use clean nitril gloves when handling the bulbs and have replaced the driver side low beam bulb (once only since owning the vehicle) with no issues. Do I have a wiring issue or is the low beam bulb on the passenger side overheating? If so, what would cause the bulb to overheat? Thanks for your time, Dannie

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  • DannieS Aug 30, 2010

    Hey Jason,

    The bulb is not black and blue and sometimes the filaments don't even look bad. The first bulb I put in didn't seat correctly, but I made sure the rest did. The assembly is as tight as the the driver side assembly. I've banged on the fender on several occasions and the light came back on but would go out within several minutes of driving. Almost seems as if something in the wiring is loose, but I can't locate it. I've moved the wires on the bulb connecter with the light on and nothing changed. I can try that again when I'm off shift. Maybe something further back in the harness?

    Thanks,

    Dannie

  • DannieS Nov 02, 2010

    Hey all, thanks for the input. I found the issue and it was such a stupid little thing that I feel like an idiot. I followed the wires, wiggled them, moved them, no breaks, nothing...light stayed on. Step back and scratch my head, the light goes out! #!^^

  • DannieS Nov 02, 2010

    Try this again, as half my reply was cut off above.

    Hey all, thanks for the input. I found the issue and it was such a stupid little thing that I feel like an idiot. I followed the wires, wiggled them, moved them, no breaks, nothing...light stayed on. Step back and scratch my head, the light goes out! #!^^. Rap on the fender and the light comes back on. Wiggle the wires again, nothing. Stand back and look at it, the light goes out. Right about then I was ready to fix it for good. Instead, I pulled the cap of the back of the assembly to check the connections again. Everything in place, but I grabbed the ground tab anyway. The light came on! The female end of the ground wire was loose on the tab. I'm not sure what caused this, but it has been an issue since I have owned the vehicle. A gentle squeeze with a pair of pliers tightened the female end and I have not had a problem since. Thanks again for all the advise!
    Dannie

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If you have a new light in it,disconnect the wire.I would inspect the wire as far back as you can starting at the light.Look for a nick or a fray,something that may be touching the metal on the car somewhere.If you do find a nick or fray,where wire shows,cover it preferably with electrical tape and turn on the light and wiggle it around in that spot.If you come across some probably black tubing without finding anything yet,plug the light in and turn it on and wiggle the wires at the light in all kinds of directions,circles,and see if it affects the light.You will not get electrocuted.It is the same DC that the battery works from and won't hurt you.If the light is still okay go back to the tubing in the middle top with as small of a pair of scissors you have.Toenail scissors are great for this.Cut the tubing back about a foot or what about 34 cm. and keep checking the wire.If you find a nick or fray,cover with electric tape,turn on the light and wiggle the wire there.When you are done,you can just cover the cut tubing with some duct tape,you only cut one side and you just need to prevent water entry.It doesn't need to be special,just cover the cut tube with about a half-width of a roll of duct tape.It doesn't need to go all the way around.Let me know if it works or not.Just reply to this and I will get an auto link.
Good luck! Greg

Posted on Aug 30, 2010

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Hi,

First check what has happened with the bulb, if it is black and blue when it blows then it is the bulbs that you have been using, if the filaments are broken then this is a problem with the base and the locking tabs which hold the bulb in place, as it will be shaking to much and this will be breaking the filaments in the bulbs.

Make sure that when the bulb is fitted that it is tight in the headlamp base and can't move.

Check this and let me know if you you more information.

Thanks

Jason

Posted on Aug 29, 2010

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