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My high beams will not come on, the low beams work great, is it possible that both bulbs burned out. The high beam indicator works but the high beam lights don't, what could it be?

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  • kev smith
    kev smith Nov 22, 2013

    quite possible with newer cars when one bulb blows the power surges and blows the other bulb

  • kev smith
    kev smith Nov 22, 2013

    also check the fuses s high and low beams usually have seperate fuses

  • kev smith
    kev smith Nov 22, 2013

    ps check if you have two different headlamp bulbs in the same headilight there may be a high and low beam bulb it them

  • Richard Farlow Nov 25, 2013

    Both bulbs were blowed. Thank you for your help

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  • 42 Answers

Yes, it is possible both are burned out. I recall a police car coming in for no high beams, after some diagnostics I found both bulbs out.
The vehicle probably uses relays under the hood (year, make, model???) if it is one relay it could have bad contacts. Have someone turn beams on and off, listen under hood (key on, engine off) for a clicking sound, this will be high beam relay.

Posted on Nov 22, 2013

Testimonial: "Both bulbs were out. Thank You for your help."

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SOURCE: My low beams are not working but the high beams are

IT LOOKS LIKE THE DIMMER SWITCH.

Posted on Jul 26, 2009

ourhowse
  • 2007 Answers

SOURCE: low beams dont work, only high beams do. 02 tacoma

If there is power there, then it has to be the bulbs. The trouble that most people have is, they don't see how both bulbs could burn out at once... and they're right. They don't. But you see vehicles with one headlight all the time. They don't know it unless you tell them or they happen to see it themselves. Then the second light burns out, and they think it's a major catastrophe, when in fact, it's just bulbs. The high beam still works because the bulb is double filament. The only other thing it can be is the dimmer switch, and since you switched it to high, it appears to be working. However, if it's not bulbs, it still could be the switch.

Posted on Oct 07, 2009

dttech
  • 4803 Answers

SOURCE: 2005 Ford Focus ZX3 SES, the blue high beam

It sounds like you are confused about how your headlamp system is supposed to work. The DRL does not run on the High beam circuit, it runs on the low beam circuit. The fog lamps are supposed operate with the park lamps and also with the low beams, not the high beams. From your description, I would say that your system is operating as designed and you are having trouble telling High from Low. (Don't feel bad, that is why high beam indicators were invented in the first place.)

Posted on May 08, 2011

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4 Answers

I have a 2006 civic SI. DRL indicator is on, driver side low and high beam ok. Passenger side low beam ok but DRL and hi beam not working. Any help is appreciated.


When either the high or low beam light is out in either side, DRL (daytime running lights) indicator will come on. When one bulb goes out, that's a clue the opposite bulb will burn out soon, so its best to replace both bulbs. If it was a fuse issue, both left and right side would be out. If driver side is OK but passenger side is not, then its a bulb issue. A 2006 Honda civic takes 9006 (HB4) low beam bulbs and 9005 (HB3) high beam bulbs. Cheapest is online from Walmart site-2-store. After procuring, wear latex, vinyl, or ANY gloves to keep your (corrosive) oil skin from coming in contact with headlight glass bulbs. Your skin oil will chemically react and cause shorter life span on glass bulbs. Instruction don't tell you this, so you handle with your hands, then need to replace bulbs 3 years later instead of 5 years (or more) in the future. With gloves on, pop the hood and look behind each headlight. Turn counter clockwise to unlock headlight bulb holders. Its a quarter to half turn to unlock bulb holder lock. Replace one bulb at a time so you don't confuse high beam from low beam. The wire has a tab you need to lift to pull out & disconnect wire connector. You might need a slim narrow-**** (NOT phillips) screwdriver to lift the tab; or use your house key. Snap the wire connector to the new bulb, then twist into headlight housing to secure bulb holders, then move on to the next bulb to repeat the procedure. Pict below, 9005 high beam is on the left, 9006 low beam is on the right. Handle by grasping the plastic base, not the glass bulbs. The raised potrusion on the bottom center is where the tab locks onto wire connector. Replace all 4 bulbs now, but in the future, its likely the low beam will wear out before the high beam. In the future, replace only the pair, not all 4. The factory installs inferior bulbs that go out sooner, hoping you'll take to dealership and they ******** you with higher parts-n-labor fees. As opposed to Walmart online site-2-store, it would cost you AT LEAST triple in parts & labor from dealership to replace all 4 headlight bulbs :-(
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low beams are on with the high beams does NOT mean the bulbs are good. The low beams have two separate filaments, one that lights on low beam and one that lights on high beam. That's why the low beams have three terminals but the high beams have only two.It's entirely possible that both low beam filaments have burned out. If the bulbs really are good, then the dimmer switch is the most likely problem.

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1 Answer

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If there is power there, then it has to be the bulbs. The trouble that most people have is, they don't see how both bulbs could burn out at once... and they're right. They don't. But you see vehicles with one headlight all the time. They don't know it unless you tell them or they happen to see it themselves. Then the second light burns out, and they think it's a major catastrophe, when in fact, it's just bulbs. The high beam still works because the bulb is double filament. The only other thing it can be is the dimmer switch, and since you switched it to high, it appears to be working. However, if it's not bulbs, it still could be the switch.

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