Author Topic: Weird low beam pattern Mazda 3 BL 2012  (Read 2527 times)

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Offline amar1994

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Weird low beam pattern Mazda 3 BL 2012
« on: June 29, 2017, 05:14:14 PM »
Hello everyone  :) ,

Is this pattern normal , you can notice this elliptic black spot , tried many different halogen bulbs with same result  :(



Thanks in advance  ;)

Offline moozmooz

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #1 on: June 29, 2017, 05:23:53 PM »
Difficult to make anything from that. Can you do two more photos, one dipped, one full beam against a blank wall?

Offline amar1994

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #2 on: June 29, 2017, 07:56:00 PM »
Difficult to make anything from that. Can you do two more photos, one dipped, one full beam against a blank wall?
of course , will post pictures tonight  :)

Offline StevenRB45

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #3 on: June 30, 2017, 09:12:05 AM »
If I'm somewhere I can have look at mine I will, but we just had the longest day of the year so it's pretty much light until 1030 at night.

Only photo I can find is this one from December 2 years ago.



Doesn't appear to show a void in the beam, but the fog could be hiding it a bit.

However the steering wheel is on the other side so it may the setup is different although it should just be a mirror image.

Out of interest can you see inside the projector when the bulb is out? Could be something like a dead fly.

Offline amar1994

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #4 on: June 30, 2017, 10:19:31 PM »
Thanks Steven  :)

Against the wall images

Dipped beam



High beam






Offline StevenRB45

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #5 on: June 30, 2017, 11:33:06 PM »
Beam patterns look fine to me.

Your dark spots may be caused by this, never noticed before but there's a gap in light produced by both projectors straight down.

« Last Edit: July 01, 2017, 09:25:06 AM by StevenRB45 »

Offline amar1994

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #6 on: July 01, 2017, 03:54:04 PM »
Beam patterns look fine to me.

Your dark spots may be caused by this, never noticed before but there's a gap in light produced by both projectors straight down.


Thanks a lot man , I owe you a drink  ;) :D

Offline moozmooz

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #7 on: July 02, 2017, 12:38:17 AM »
I'm struggling to see any problem with your light pattern. Perhaps you could mark the problem areas in your photos.
What StevenRB45's referring to shouldn't have an effect on the light pattern. The reflectors effectively spill light round obstructions so the shadows you see looking into the light shouldn't have any effect on the light pattern produced on the road.

Offline StevenRB45

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #8 on: July 02, 2017, 09:09:10 AM »
I think you're looking at this from an mot point of view..from that point of view the lights are fine.

I believe what was being referred to was the darker areas I've circled here with my mad paint skills.



There's 2 of them which suggests one for each light.

Going back to my photo ignore the projector itself look at the light it is throwing onto the outer lens.




If you look at the red circle there is a line in the output at the 6 o'clock position. Amars original photo showed this in my opinion but bigger because it's further away from the light source.

Offline amar1994

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #9 on: July 02, 2017, 04:13:38 PM »
Yes Steven , i saw that the other day on my right headlight , thanks a lot for help  :). I'm quite relieved that headlight unit is OK  8)

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #10 on: July 03, 2017, 12:07:35 AM »
I'm looking at it for a uniform light output, hence the dipped and full beam images to eliminate any dark areas on the ground/wall. As already stated, there shouldn't be shadow areas projected from the lights. If the two blobs circled are indeed the problems amar's talking about, then the fact that one is significantly darker than the other would suggest something's not right.

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Re: Weird low beam pattern Mazda 3 BL 2012
« Reply #10 on: July 03, 2017, 12:07:35 AM »