Low-beams not working, Chevy Spark 2011. High and fog work!

[Manoliskaye]

Hi all, I have the following problem:

My low-beam headlights have stopped working, while the high beams and fog still work perfectly.
From research, I have found that the following culprits could be to blame:

1.) Burned fuses;
2.) Bad relay for low beams;
3.) Bad bulbs;
4.) Bad switch;
5.) Bad wiring.

My process so far, according to the above has been:
1.) Fuses: I have experimented with interchanging the fuse of both the fuse boxes; they seem ok (encircled with the yellow circles in Figures 1). Am I missing another fuse which might be causing them not to work?;
2.) Relays: I now know that the low-beam relays is soldered into the fuse box. Although, whilst switching from high to low-beam, I can still hear the characteristic relay sound; perhaps it is OK? Any other diagnostics of a faulty relay?
3.) Bulbs: Is it possible that the low beams of the two lightbulbs have failed simultaneously? It sounds very strange! I will investigate changing one bulb next perhaps it is to blame.
4.) Switch: This is something I hope it's not and will solve if 1,2,3 don't work!
5.) Wiring: This is something I hope it's not and will solve if 1,2,3 don't work!

Thanks

[Twig62]

Dipped beam filaments failed in both bulbs would be my guess. One could have blown weeks ago and being summer may not have been noticed.

[PositronicRay]

Using a multimedia and or test light, start at the fuse box then chase either up or down stream.

If you don't have a bulb out lit on the dash, good chance it's a switch.

Edited by PositronicRay on Tuesday 30th August 21:01

[Manoliskaye]

Thanks mate! Will try that

[Manoliskaye]

Hi everyone, turns out it was the two light bulbs burned out simultaneously. How bloody mad is that!

[Cylon2007]

Manoliskaye said:

Hi everyone, turns out it was the two light bulbs burned out simultaneously. How bloody mad is that!

Really, surely the first check, before takes ages putting a post on the interent, is to check the bilbs????? Simples really. Can no body solve simple problems nowadays without turning the the internet BEFORE actually trying to fix the issue, or is it me being old and grumpy??

[Manoliskaye]

What are you extracting conclusions for mate? I only asked for help. Please don't respond if its for criticism like that this. I guess you don't mistakes?

[Polly Grigora]

Check charging voltage is good, over-charging problem will blow bulbs

[E-bmw]

Possibly a knock/large pothole when they are on could do that if they were cheap bulbs.

[Manoliskaye]

Thanks a lot, I get that! I think it happened on the motorway during the summer. Also: Polly Grygora, are you Greek by any chance? Cause your name means very fast in Greek haha

[Polly Grigora]

Kalispera

Manolis......, only just realised that you're very likely Greek

I moved to Greece several years ago

[Manoliskaye]

Nice one mate. I am half Greek, half Liverpool lad. My dad is Greek and lived there too (crete). He also got me into my cars and motorbikes haha

[Polly Grigora]

Manoliskaye said:

Nice one mate. I am half Greek, half Liverpool lad. My dad is Greek and lived there too (crete). He also got me into my cars and motorbikes haha

Very good then matey, the Greeks on the mainland are crazy about cars

Crete is very beautiful, nearly bought a house there, visited twice for holidays and once house hunting

Did your dad end up with a Liverpudlian accent?

[Scrump]

Manoliskaye said:

Hi everyone, turns out it was the two light bulbs burned out simultaneously. How bloody mad is that!

As said before, it is more likely that one had blown some time ago and you hadn’t realised. Only when the second one went that you realised the headlights were out.
If the bulbs were fitted new at the same time (very likely) then no real surprise that they reached end of life around the same time.


Glad you got it sorted with an easy fix.