The car: early 1979 240D
The location: under driver’s side lower dash cover on left side
The clue: Not plugged in, but everything but the radio seems to be working.

What does it do?

Attached Thumbnails

 

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

I'm going to guess and say it's either for the seat belt warning or the warning for leaving the lights on.

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Being that is has the Hella name on it, I venture a guess that it has something to do with either the headlights or fog lights.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Glow plug relay. Early W123 have it under the dash. Later (pencil plugs) it was relocated under the hood.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

You sure? Warngerat translates to "warning turn out"

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I'm not sure, I'm guessing. My W123 is an '83 now; my '78 is long gone.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

That was my thought, but the plugs work just fine. Head and fog lights work too. Now that I think about it I do not remember hearing the seatbelt buzzer in this car. I think we may have a winner!

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

probabaly a buzzer that wouldnt shut off

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

that is the thingy, duh, it is not fogs, or glow plugs, cuz i saw the same relay under my dash yesterday, and my 115 doesn't have those, i would say that it is your emerg. relay.

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I like cars.

Maybe unplug it and see what doesnt work

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85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International

It was un-plugged when I got the car. I'm trying to figure out what it does before I plug it back in.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

it's the spare relay?!?

does your windshield wiper works? i'm guessing that is it!?!

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'85 300D Turbo - CA Version

Yeah,that would make it much harder,hopefully someone will be able to identify it.Good luck

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85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International

Plug it in, turn your lights on with the door open and starter key out, and see if it buzzes.

If it is the original glow plug relay and someone upgraded to the new style under the hood it would stand to reason that it is unused.

Just a thought.