LED lights in winter - Mazda CX3 Forum
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post #1 of 11 Old 01-10-2016, 08:03 PM Thread Starter
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LED lights in winter

This is how the LED headlights look like after a short drive in - 26 C.
All that frost is inside the "glass".
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post #2 of 11 Old 01-10-2016, 09:26 PM
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Hmmm. I wonder how Audi and BMW who have been using them for years go on?

Currently CX5 SportNav 2.2 diesel automatic and AWD.
Formerly CX3 SportNav 1.5 diesel automatic and AWD.

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post #3 of 11 Old 01-10-2016, 10:21 PM
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Needs headlight warmers

Does the frost compromise focus of the lighting much?

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post #4 of 11 Old 01-10-2016, 10:29 PM
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I wounder if a seal is broken and letting moisture in? My RX-8 and many others had moisture issues with the tail lights.
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post #5 of 11 Old 01-10-2016, 10:31 PM
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Quote:
Originally Posted by DJ9999 View Post
Needs headlight warmers

Does the frost compromise focus of the lighting much?
Exactly what I was thinking. And yet there is a heat sink at the back of the light???

Currently CX5 SportNav 2.2 diesel automatic and AWD.
Formerly CX3 SportNav 1.5 diesel automatic and AWD.

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post #6 of 11 Old 01-11-2016, 12:27 AM
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Without good heat sinking, the internal (junction) temperature of an LED rises, and this causes the characteristics to change. As the junction temperature of an LED is increased, the forward voltage, lumen output, and most significantly, the lifetime of the LED decrease significantly.

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post #7 of 11 Old 01-11-2016, 03:26 AM
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Quote:
Originally Posted by jtonline View Post
Without good heat sinking, the internal (junction) temperature of an LED rises, and this causes the characteristics to change. As the junction temperature of an LED is increased, the forward voltage, lumen output, and most significantly, the lifetime of the LED decrease significantly.
It's a pity some of the heat can't be wasted in keeping the headlight warm.

Currently CX5 SportNav 2.2 diesel automatic and AWD.
Formerly CX3 SportNav 1.5 diesel automatic and AWD.

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post #8 of 11 Old 01-11-2016, 06:56 AM
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i seem to have this problem as well. I just took a 40 min drive in -4F here in Madison and my headlights are also frosting over inside. im gonna try bring this up with the guys i work at Mazda and gets some answers. Will keep posted

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post #9 of 11 Old 01-11-2016, 07:11 AM Thread Starter
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Quote:
Originally Posted by DJ9999 View Post
Does the frost compromise focus of the lighting much?
Of course it does and also light output in general.

Both lights have the same problem. Frost melts if you can use HI-beams (more heat) for a longer period.

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post #10 of 11 Old 01-11-2016, 04:07 PM
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I haven't noticed this issue with mine, but it hasn't gotten quite that cold in Colorado so far this winter. I'll have to keep an eye on it.

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