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Posted on Mar 25, 2013

My head lights do not work on low beam but when I have them ion high beam they work why is this

When my head lights are on they do not work, when I switch them to high beam they do work. it seems that the low beam bulbs will only work when on high beam?

5 Related Answers

Anonymous

  • 32 Answers
  • Posted on Jul 10, 2008

SOURCE: 1990 525i bmw headlights

Check the wiring in the lights it may be poor construction or mis care that has madr a wire become looseand only rarely turn on

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Anonymous

  • 1586 Answers
  • Posted on Oct 31, 2008

SOURCE: burned out headlight/bulb bmw 1991 325i 2dr

It's a bulb replacement. If it's anything similar to my Audi, there is a cover on the back of the headlight housing that you pop off. Then you can reach in, pull the wire connector off the bulb, and unclip a metal retainer over the bulb, and pull the bulb out. Installation of the new one is the reverse. Just be SURE not to touch the glass part of the bulb. Skin oils can cause a halogen bulb to burn very hot and burn out very quickly. If you do touch the glass, wipe it gently but thoroughly on a cotton cloth to clean it off before you install it.

Zack Wagers

  • 33 Answers
  • Posted on Apr 22, 2009

SOURCE: check low beam light - light goes on and off - wiring issue?

MAY TRY CLEANING THE BULB CONNECTION WHERE THE BULB SITS ON THE PLUG IN OR CHECK FOR A BAD OR LOOSE GROUND WIRE

airjoc

Rob Sinbad

  • 709 Answers
  • Posted on Sep 25, 2009

SOURCE: 2002 BMW 330XI, high beams do not come on fully

check fuse and relay, if its good, than you have faulty switch, only work on low but not high beam, to turn high beam on the switch move forward which is fauty or no contact, flashing high beam move toward you which has a good contact and working. it two switch in one unit.

alicantecoli

Colin Stickland

  • 22516 Answers
  • Posted on Oct 30, 2009

SOURCE: 2004 BMW X3 driver side low beam headlight

remove the air filter housing ,simple .this programme has a spell check thingy working and its driving me nuts ,it cant identify plain english ,write colour and it squiggles it out but color is ok .

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Are both low beams an high beams not working ? What engine does your car have ? Low beam relay only on 2.2 L .
On vehicles with manual headlamps, the LH HDLP and RH HDLP fuse in the fuse block - under hood, supply battery positive voltage to both low beam lamps and high beam lamps at all times. The low beam and high beam circuits continue through the fuse block - under hood, through the body control module (BCM), and to the headlamp switch. The low beam or high beam circuit then, depending on the position of the dimmer switch, continues through the headlamp switch. When the headlamp switch is placed in the ON position, it provides a ground path for the low beam or high beam lamps through G203. The low beam and high beam circuits are monitored by the BCM.
Is there B+ voltage at the headlamp fuse's ? Power runs from fuse through the head lamps to the dimmer switch through the head lamp switch to ground when turned on . If there is B+ voltage at the fuse ,check for voltage at the headlamp switch .
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My 87 k5 blazer headlights don't turn on when the car is started and running any more... all 4 headlights turn on fine when I pull the lever all the way out for high beams

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Daytime running light working fine but can not switch on the head light? 1998.

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High-low beams not working

Check for headlight relay and fuse. Some cars have separate circuits for head light flasher and normal high/low beam. From your description, I would suspect a bad connection to/from relay or relay itself.
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Low beam headlights do not work, but high beam headlights do

Clyde,

I've been troubleshooting this same problem on a different vehicle this week, and I can give you the steps I'd take.

1. If both sides went out at the same time, the problem is *NOT* likely to be the bulbs.

2. Check the fuses to see if both low beam lights are on the same fuse. Many cars have one fuse for low beam and another for high beam, so both lights out at the same time typically means fuse blown.

3. If the headlights are OK and the fuses are OK, then the problem is *LIKELY* the headlight switch. In my case, AutoZone has one and it can be installed easily; but in your case, that may not be as simple.

Please post your findings or comments.
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