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Old 06-26-2011, 12:08 PM   #1
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Headlight keepd burning out

Can anyone help me? My drivers side headlight keeps burning out, it will last a week then it needs to be replaced again? I can't figure it out, fuses and wiring are good. This is the third time now.

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Old 06-26-2011, 05:18 PM   #2
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Can anyone help me? My drivers side headlight keeps burning out, it will last a week then it needs to be replaced again? I can't figure it out, fuses and wiring are good. This is the third time now.
You definately have an intermittant short in the system. There is so much crap associated with the canbus you're not going to find it by eyeballing it. It has to be addressed by a tech. who really knows what they're doing. If it's still under warranty bring it in. You didn't mention if the wiring is all stock or if you tapped into it for some other lights, etc.

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Old 06-26-2011, 05:37 PM   #3
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Can anyone help me? My drivers side headlight keeps burning out, it will last a week then it needs to be replaced again? I can't figure it out, fuses and wiring are good. This is the third time now.


The bulb is clean correct? No oil from your hands?
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Old 06-26-2011, 05:40 PM   #4
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Is it under warranty?
If not and you don't feel like tracking it down, you could make a fused relay circuit for the headlights that has its own power from the bat or terminal box and is triggered by the one headlight that doesn't go out. Would give more light output as well.
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Old 06-26-2011, 11:00 PM   #5
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Yes it is under warranty and I'll be bringing it in tomorrow. However I am just going to purchase the headlight set up from Daniel Stern later this week. And it was only the stock setup nothing was piggybacked on that. Thanks guys now I just have to read up and figure out what I need from Mr Stern, that should remedy the problem
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Old 06-26-2011, 11:05 PM   #6
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The bulb is clean correct? No oil from your hands?
X2 on this one. All you have to do is touch the bulb while replacing it and it won't last too long at all. The oils from your fingers placed on the bulb from touching it creates a hot spot on the glass when it is on. It stresses the glass and then fthhhhht it's gone.
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Old 06-30-2011, 07:13 AM   #7
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I have heard that too (over and over...) but yet I have never had a glass blow out, only ever a filament failure (in 29 years and dozens of vehicles/bikes).

Is yours the filament failing? If so, try to see if the headlight assembly will move, as in will it rattle around over bumps. This will cause a filament to fail very quickly.
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Old 06-30-2011, 08:49 AM   #8
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CAN BUS problems can't damage light bulbs. There are only few things that can shorten the life of a halogen light bulb:

- Too high voltage. The voltage should be between 13.8 and 14.3 V with the engine running. If it is higher than 14.5V, it will shorten the life of all light bulbs and may potentially damage other things. The cause is faulty voltage regulator / alternator and it should be covered by warranty.

- Touching halogen bulbs with your fingers while replacing them. It may not look like a big deal, but it is. ALWAYS hold the glass part of a halogen light bulb with CLEAN cloth or CLEAN gloves.

- Vibration: If the bulb is not mounted correctly, if will vibrate / shake resulting in premature failure. Make sure that the bulb is properly installed in the headlight assembly. Exact orientation is important - if the bulb is not placed correctly it won't sit well in the socket. This may not only damage the bulb, it will also affect your headlight's alignment.

- Water getting inside the headlights - that should be pretty apparent

- If your car has daylight running lights, a damaged "dimmer" resistor that keeps the light on at a reduced brightness will shorten the life of the bulbs, but they should last more than a week. There should be a visible difference in brightness between DRL and when the headlights are on - if the DRL appear as brigth as when you turn the lights on, then the "dimmer" resistor is damaged and needs to be replaced - again, this should be covered by the warranty.
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Old 06-30-2011, 10:07 AM   #9
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I have heard that too (over and over...) but yet I have never had a glass blow out, only ever a filament failure (in 29 years and dozens of vehicles/bikes).

Is yours the filament failing? If so, try to see if the headlight assembly will move, as in will it rattle around over bumps. This will cause a filament to fail very quickly.
If you are thinking 29 years back you may be remembering sealed beam headlights. I'm an old codger too and I have gotten past some things that I would now call antique. I rarely have to change the new type halogen bulbs out but have had some experience with projector bulbs. They are similar to what is now in vehicle headlights. Modern projector bulbs range from $100.00 to $500.00. I installed a bulb on a projector way back when they had just come out with these new higher intensity bulbs in a very small package and it blew out within a few days. When I went to the company for a replacement they pointed me to the directions for proper installation which pretty much says what the previous post says. You have to handle them either with a cloth, paper towel, cotton gloves or some similar material to keep your fingers from touching the glass of the bulb. If however you do touch the glass, a small amount of denatured alcohol on a cloth will clean it off. I've done that as well and that works. Such is the way of the modern headlight bulb.

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