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10-22-2009, 07:27 PM
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'09 Yaris
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LEDs and heat
Howdy folks,
I did a brief search on the forum for this but didn't find what I was looking for. Granted, I didn't spend tons of time all of the posts from each thread but I did put forth minimal effort. :) Are there any issues with changing the interior light bulbs for LED lights and excessive heat? The reason I'm asking is that I see warning labels on home LED lights that warn about heat and some of the LED lights have small fans or cooling fins built in. Is this just because those LEDs have to put out 100w of light? Does an automotive LED have this issue since it's 5w or less? What about the HID kits? Are there heat issues with them? Thanks, S.R.
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2009 Yaris 3-Door Liftback MT Black Sand Pearl 
Last edited by SaerinRhoe; 10-22-2009 at 07:28 PM. Reason: typo |
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10-22-2009, 07:42 PM
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#2 |
  
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Not unless you run them with resistors in place , which is only required
if you are useing them for brake lights or indicators without the correct relay .  No heat issuses what so ever . with leds or hids . |
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10-22-2009, 07:48 PM
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#3 |
Drives: 08 Yaris Sedan Join Date: Oct 2008
Location: California - Bay Area
Posts: 2,773
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I was under the impression leds run cooler than normal bulbs.
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10-22-2009, 07:53 PM
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Reluctantly Crouched...
Drives: 2008 Yaris HB M/T Join Date: Oct 2008
Location: DFW, TX
Posts: 867
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Quote:
I think the home lights that put-out a lot of heat are not LED, but halogens. I've personally never seen any LED setup that put out near the heat of an incandescent bulb. |
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10-22-2009, 07:53 PM
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'09 Yaris
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So, to make sure I understand you 1NZ, there are no heat issues for LED bulbs unless a resistor is used on a LED bulb in the brake light or turn signal?
Thanks, S.R.
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2009 Yaris 3-Door Liftback MT Black Sand Pearl
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10-22-2009, 07:54 PM
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'09 Yaris
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Damn ninjas
S.R.
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2009 Yaris 3-Door Liftback MT Black Sand Pearl
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10-22-2009, 08:06 PM
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Drives: 2008 yaris, stripped, red Join Date: Jan 2009
Location: SE Texas
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led's run cooler than bulbs.
the only reason they have a warning on home use is there's like 75 led bulbs in a really tiny space. yes that will generate heat. |
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10-22-2009, 08:40 PM
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ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Actually, regular LEDs run cool, but the high output LEDs (>1 Watt) like the Luxeon Stars run very hot and require a heat sink and/or active cooling. You can buy automotive replacement bulbs with the high output LEDs. The automotive ones will use a heat sink for passive cooling and even though they are hot, they are no where near as hot as the incadnescent bulb that they replace.
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10-22-2009, 09:42 PM
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Drives: 08 Yaris Sedan Join Date: Oct 2008
Location: California - Bay Area
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Oh well just for the record i have replaced all my interior lights to led as well as my trunk light. The trunk light was like a 15 led cluster too very bright. Never had any issues and its been about a year.
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01-02-2010, 12:02 AM
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01-02-2010, 09:34 AM
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Banned
Drives: '10 Yaris5drHB+99 4runner LTD Join Date: Sep 2009
Location: NE
Posts: 672
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Quote:
I run 700 lumen (5 watt) LED's on my bikes (mtb, road bike) and they indeed get hot. they need heatsinks. yes less hot than incandescent or HID but still hot enough to degrade the life of LED from 100,000 hours to about 400 hours if heat is not managed led's at the power of interior lighting or side markers don't need heatsinks |
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