This could be a possible solution to LED headlight bulbs incompatibility. - Mercedes-Benz Forum

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post #1 of 26 (permalink) Old 04-19-2017, 01:53 AM Thread Starter
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Vehicle: W124 E300 12v 1992 and a 2009 Crown Victoria
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This could be a possible solution to LED headlight bulbs incompatibility.

Hello.

Searching this, I understand that the headlight LED bulb incompatibility problem with W124's is that the LED bulbs have a different beam direction that does not work well in our cars' headlight housing giving dark spots.

Looking around, I found that some LED bulbs now have a 360 degree light angle that could supposedly (from what 360 means) distribute the light all around the housing allowing the reflectors to catch it and give the beam pattern correctly. Some come with three sides and others with four sides like these:



Is my analysis in place and has anyone tried one of these 360 degree three/four sided LED bulbs (or any others if exist), or heard of it at all? In case (only in case) no one specifically did to confirm it wouldn't work 100%, I'm willing to stick my neck out and do the test myself. I found a four sided 360 LED bulb sold locally for $40 USD. The brand is called "360 Light" (go figure) that says "works with all kinds of vehicles". I'll post some pics of it if this thread proves productive.


Important:
This is about the 360 degree three/four sided bulbs, not the traditional low/high beam bulbs I found tested so far with W124's and proven to not work correctly.

Current vehicles:
1-MB W124 300e 12v 1992 +455k Km (daily drive)
2-Ford Crown Victoria 2009 (used when needed).

Previous vehicles:
Ford Crown Victoria 2001 (sold in early 2009)
MB W124 200 1986 (sold in late 2005)
MB W126 500 1986 (sold in late 2004)

Last edited by smart_guy; 04-19-2017 at 03:55 AM.
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post #2 of 26 (permalink) Old 04-19-2017, 03:12 AM
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LED bulbs just do not work for housings designed to take halogen units regardless of make or model.

I've tried on my motorcycle, and the unit failed in about 1 month since the housing cannot dissipate the heat generated by the LED bulb unit despite the housing being equipped with air flow.

The only unit I have had success with is this one as a fog light replacement on the Honda Accord. No fans, no straps, well built, very wide beam pattern, but less so forward which is where you really need it for fog light duty.

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

LED bulbs are great for interior bulb substitutes, and depending on vehicle, license plate illumination.

But otherwise, stick with a qood quality inexpensive halogen.

Last edited by sbaert; 04-19-2017 at 03:20 AM.
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post #3 of 26 (permalink) Old 04-19-2017, 03:31 AM Thread Starter
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Oh, the heat is an issue too! I missed that point. I was under the impression LED's gave less heat than halogens on the same wattage.

Oh well, that was one short lived dream.

Current vehicles:
1-MB W124 300e 12v 1992 +455k Km (daily drive)
2-Ford Crown Victoria 2009 (used when needed).

Previous vehicles:
Ford Crown Victoria 2001 (sold in early 2009)
MB W124 200 1986 (sold in late 2005)
MB W126 500 1986 (sold in late 2004)
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post #4 of 26 (permalink) Old 04-19-2017, 03:42 AM
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Yeah, the cheaper ones use a little fan like the one you posted. The Philips I installed uses a passive heatsink at the base of the bulb to dissipate heat. On the Honda, the base of the bulb sits in the outside air so plenty of cooling and no fan to go belly up.

It is a clean, compact unit but for the price I wouldn't do it again.

Any LED design is going to have the problem of forward illumination, regardless of brand.

Last edited by sbaert; 04-19-2017 at 03:44 AM.
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post #5 of 26 (permalink) Old 04-19-2017, 04:15 AM Thread Starter
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Given the bulb(s) lived for a month in your motorbike, and I honestly think that's long for a passive cooled device, do you think adding active cooling (water resistant fans are available) could have extended that for the bulb's life time?

I have some points about the illumination, but my time is tights right now. Be back later.

Current vehicles:
1-MB W124 300e 12v 1992 +455k Km (daily drive)
2-Ford Crown Victoria 2009 (used when needed).

Previous vehicles:
Ford Crown Victoria 2001 (sold in early 2009)
MB W124 200 1986 (sold in late 2005)
MB W126 500 1986 (sold in late 2004)
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post #6 of 26 (permalink) Old 04-19-2017, 05:02 AM
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The one that failed was the type with a fan. The Philips ones are passive cooled, and no issues after 3+ months
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post #7 of 26 (permalink) Old 04-19-2017, 06:10 AM
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You can use LEDs for all your tail light bulbs. They make a difference especially on the brake lights which add up to 63w. Headlights don't work because LEDs can't be positioned in exactly the same spot as the old halogen filament. Your best choice there is HID.


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post #8 of 26 (permalink) Old 04-19-2017, 07:11 AM Thread Starter
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Good call. I meant to ask (the point about illumination) if installing a relay would enhance illumination distance as a result of enhancing output. Positioning issue is a whole new level.

Game over, I guess.

Current vehicles:
1-MB W124 300e 12v 1992 +455k Km (daily drive)
2-Ford Crown Victoria 2009 (used when needed).

Previous vehicles:
Ford Crown Victoria 2001 (sold in early 2009)
MB W124 200 1986 (sold in late 2005)
MB W126 500 1986 (sold in late 2004)
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post #9 of 26 (permalink) Old 04-19-2017, 08:43 AM
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And if you do install LEDs as is, you will trip the bulb out warning light as well.

I tried replacing the backup lights with these LEDs, and they ended up being less bright for the same pattern issue.

So I put the standard bulbs back in

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
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post #10 of 26 (permalink) Old 04-19-2017, 09:49 AM Thread Starter
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Any idea if all LED's use 12V as a standard? I heard HID's don't. Could that be the reason warning light come on. Or does the warning light come on for other reasons than the voltage change?

Current vehicles:
1-MB W124 300e 12v 1992 +455k Km (daily drive)
2-Ford Crown Victoria 2009 (used when needed).

Previous vehicles:
Ford Crown Victoria 2001 (sold in early 2009)
MB W124 200 1986 (sold in late 2005)
MB W126 500 1986 (sold in late 2004)
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