I cant seem to find the answer to this question. I have a 92 sel 600 the third brake light is out. I'm assuming its the fuse?? Which fuse box is the third brake light located and anyone have an idea which fuse number it is?

Thanks in advance guys.

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1992 SEL 600..... 143,000 miles

Are you sure the light bulb isn't just bad?

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles

To tell you the truth I'm not even sure I got a fix it ticket like a month ago, I figured it was the fuse? THe brake light is in the backseat behind the backseat actually up against the rear window. How would I check that bulb? And if its not that does anyone know the fuse number for it?

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1992 SEL 600..... 143,000 miles

I doubt there is a fuse JUST for that lamp. If a fuse were bad, I would think none of the rear lights would work.

I'm not sure how your lamp is set-up, but there is usually a cover you can pop off to get to the bulb. Then just take the bulb to autozone, and they will give you a replacement.

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles

will check tomorrow. Thanks.

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1992 SEL 600..... 143,000 miles

Actually I just went out there now, and checked it, the bulb visually looks fine, the little connectors in there are fine there not broke in half or nothing. Could a bulb be blown out and look fine visually?

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1992 SEL 600..... 143,000 miles

will, I suggest you replace the bulb. It's likely the base has developed flat spots over time so it doesn't light ... commom problem that I've experienced with brake lamps/lights.

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Fred Hoelzle

Why not apply some voltage to that bulb and see if it lights up? Visual inspection doesn't always work.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

Are you getting a lamp-out warning when you step on the brakes? You should be - it's the yellow indicator on the dash with the lightbulb symbol.

The bulb is a dealer-only item. It's halogen.

I ran circles trying to get the lamp warning light to go out on my car without success - the 3rd stop lamp was the culprit, as the PO had replaced the halogen bulb with a standard bulb. Fewer watts to drive the standard bulb = light out circuit thinks the bulb is out.

The wire for the lamp runs under the rear package shelf towards the passenger side of the car and from there into the trunk.

It's most likely the bulb.

nope, no lamp out warning at all. I thought it would of been the fuse, just havent been able to figure out what number it is yet.

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1992 SEL 600..... 143,000 miles

any idea? i still cant find the exact number or where the fuse would be?

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1992 SEL 600..... 143,000 miles

checked all the fuses ( good) checked the bulb itself, looked good? what else can it be?

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1992 SEL 600..... 143,000 miles

Just because the bulb looked okay, doesn't mean it really is...

Try replacing it with a new one...it couldn't cost very much.

__________________
Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles