IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

Tail light warning stays on, even though all lights are working. Help please

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Old 12-24-16, 08:30 AM
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Starkyxx
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Default Tail light warning stays on, even though all lights are working. Help please

I have a few questions,

1. Does the warning activate if the bulb is about to go out?

2. If the answer to 1 is no, then what could trigger the warning to come on even though all of my rear lights are on and working correctly(at least looking at them from the outside)

3. Should I replace the bulbs anyway, just to see if that changes anything or makes the warning light stop coming on?

4. Does that warning include the lights that are on the trunk? or just the rear tail lights only?
Old 12-24-16, 08:45 AM
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4TehNguyen
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check your dual filament bulbs, one of the filaments maybe burned out
Old 12-24-16, 08:47 AM
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Starkyxx
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Originally Posted by 4TehNguyen
check your dual filament bulbs, one of the filaments maybe burned out

Im gonna go ahead and replace both bulbs with new ones, I'll keep ya posted. Hopefully that fixes it
Old 12-25-16, 09:49 AM
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Okay, so I thought I found the problem. My rear passenger brake light bulb had one side blown out, so I replaced both brake light bulbs with new bulbs... and the warning light still comes on when I turn on my car and press the brake pedal. I don't know what to do anymore
Old 12-25-16, 05:55 PM
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MIA_LEX
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Originally Posted by Starkyxx
Okay, so I thought I found the problem. My rear passenger brake light bulb had one side blown out, so I replaced both brake light bulbs with new bulbs... and the warning light still comes on when I turn on my car and press the brake pedal. I don't know what to do anymore
replace all 4 taillights with new bulbs
Old 12-25-16, 07:23 PM
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Originally Posted by MIA_LEX
replace all 4 taillights with new bulbs

Is the light mounted in the back windshield one of the things that count towards getting the rear light warning?
Old 12-26-16, 10:18 AM
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Vitveet
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With my 10 years of ownership of my is300, when that light comes on, it's VERY accurate! If it comes on when you press the brakes, one of the 5 bulbs is bad. Get a brick or concrete block or something to stand on the brake so the brake lights light up (if you don't have some one to press it for you while you stand back there and look).

V.
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