I noticed the drivers side tail light is not working but will light up when brake pedal is of pressed. I replaced bulbs and no change. Connections do not look corroded either. Also, the driver side parking light is out and I have one on order.

Any suggestions?

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1996 E300D

... if the "tail light" comes on when the BRAKE pedal is pressed there is a problem in the wiring for sure...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Left and right park lights are separate fuses.

The brake light current is chasing a ground, it's not finding one, so the current travelling back thru the taillight filament.

You've got two problems.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

The ground connection to the body under the trunk plastic is probably rusty

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

The W210 uses a molded tail light assembly with conductive runners for the bulb contacts. If you lose the ground on the brake/tail light bulb (such as if the shell of the bulb is not touching the socket) you will get the exact symptoms you describe.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Ok I will look into what y'all have listed. I did find the fuse was blown so I will replace and see if that fixes it. Hopefully that is all it is.

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1996 E300D