IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

LEDs inside flicker when dimming on and off?

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Old 01-22-15, 04:05 PM
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tomiv9
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Default LEDs inside flicker when dimming on and off?

I just replaced my dome lights in front and back of cabin with Blue LEDs. They all sort of flicker a bit when they dim on and off. Is this normal?
Old 01-22-15, 05:23 PM
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gurble
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Yes, this is normal for LED's.
Old 01-23-15, 10:22 AM
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TophersToy
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Yes. Dimming is mimicked by turning the bulb on and off repeatedly. This works for a halogen bulb as it takes awhile for the bulb to charge up. This is almost instant for led which is why you actually see each on/off sequence.
Old 01-23-15, 11:53 AM
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Gville350
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Yep, happens with mine as well.
Old 01-23-15, 12:34 PM
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getafewliv
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Standard filament style bulbs vary the light output based on the voltage being applied to them.

LEDs on the other hand require a certain voltage before they turn on and operate properly. Without sufficient voltage they tend to flicker.

In order to create a nice dimming effect your car will increase the voltage up to 12V over a few seconds. This works for the incandescent bulbs but not the LEDs.
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