Why don't my low beam headlights work?

Tiny
ROQROME
  • 2007 BUICK LA CROSSE
  • 85,000 MILES

My low beam headlights don't work, high beam works and running lights work. I replaced the low beam bulbs and checked the fuses and they still do not come on. I checked the old bulbs with a meter and they are ok. Can you tell me why they are not working and how much it will cost approx. To get it fixed?

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Wednesday, December 7th, 2011 AT 12:05 AM

17 Replies

Tiny
2CARPROS KEN
  • ADMIN
  • 5,897 POSTS

Hello,

It looks like it could be a fuse please check all headlight fuses. If the fuses are okay there is a high beam relay that if it is not working will cause the low beams not to work, here is a guide and a wiring diagram so you can test for power and test the relay.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Thursday, March 9th, 2017 AT 12:28 PM
Tiny
WALTERMICHALIK
  • 2007 BUICK LA CROSSE
  • 54,000 MILES
  • MERGED

The low beam headlidhts stopped working I put in new 10 amp fuses but that was'nt the problem what do I do next? Walter M

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
WRENCHTECH
  • EXPERT
  • 20,758 POSTS
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Test for power and ground at the light and post the results here.

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
15DENNIS
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I have the exact same problem with my 07 Buick lacross.

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
WRENCHTECH
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You're welcome to read this thread but it belongs so someone else so if you want to ask questions, please start a new question of your own.

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
BRIANOGLESBY
  • 2007 BUICK LA CROSSE
  • 96,060 MILES
  • MERGED

Where is the low beam relay located

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
WRENCHTECH
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There is no low beam relay in the circuit.

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
  • 2007 BUICK LA CROSSE
  • 54,000 MILES
  • MERGED

I SEE THER ARE MORE PEOPLE THAT HAVE THE SAME LOW BEAM HEADLIGHT PROBLEM AS I DO, IS THIS A COMMON PROBLEM WITH 2007 BRICK LA CROSE?

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
ASEMASTER6371
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No, not at all. No tsb or recalls for this model. Just people overlooking the issue by trying to fix it themselves.

Roy

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Thursday, March 9th, 2017 AT 12:30 PM
Tiny
ACEPA1001
  • 2011 BUICK LA CROSSE
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
  • MERGED

My low beams and side lights stopped without warning. The auto light control continues to working plus high beams. What is the possible cause?

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
HMAC300
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There are three different types of headlights for this and we need to know what type you have in order to give a correct answer.

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
CHARLESM0N21
  • 2006 BUICK LA CROSSE
  • 240,890 MILES
  • MERGED

I'm having a problem with my low beam headlights it turns off when I only driving at night. I have tested the headlamp, mini fuse, wire connection, battery voltage, I replace the relay switch (#35 on under hood fuse/relay box), check the light switch and replace the power cable. After all that the headlights sill turns off, first dimming low lowest before turning off when I pull check the relay it is hot to the touch like its getting a lot of voltage where would it come from? A module? Or another relay? Or it is something else? How can I balance this out, I have taken my car to a shop they couldn't figure out the issue.

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
HMAC300
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Check the ground by headlight they are behind headlights on bar and check grounds on engine 1 by transmission on a stud and the other behind lh head. Make sure they are clean and tight. This cold also be a module problem so if that doesn't stop it from doing that then have it scanned.

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
  • 2006 BUICK LA CROSSE
  • 85,000 MILES
  • MERGED

Low beam headlamps will not come on. I replaced both bulbs, the fuses are good, but the contacts for the fuses are dead, I tried all different configurations with the light switch with no results. The parking lamps operate. I would suspect a relay but have no schematic. Do the relays pull straight out of the fuse box? Thank you Patrick Gallamore

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
HMAC300
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Check fuses underhood fuse box

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
  • 2008 BUICK LA CROSSE
  • 52,000 MILES
  • MERGED

Driver sid e low beam headlight went off

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Thursday, March 9th, 2017 AT 12:31 PM
Tiny
JACOBANDNICKOLAS
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CHeck bulb and fuses.

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Thursday, March 9th, 2017 AT 12:31 PM

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