For the W116 300SD you are.

I'll be awaiting such a photo, myself. I've seen many 617's from '82-'85 and none of them had the temperature switch that you refer to.

Can you not read or something? LUVMBDiesels and MBeige both have the 100C aux fan switch, they both have a W123 diesel. Why would they lie about it??????

Geeeeeeezzzzzzz, you don't have to be a know it all.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

MBeige cited the manual for the W123, which has every possible combination............including the gassers and the models prior to the turbo versions.

LUV refers to a switch on the thermostat housing, but this switch operates the blower fan in the passenger compartment.

So, while I never claim to be know it all...........I do know a few things.

Take note of #40's caption in the posted attachment.

Attached Thumbnails

 

oooooooh HOOSH! you got sizzzerved!

__________________
1991 300 D 2.5 Turbo, 220k
also in the family:
1981 240 D 185k
1991 350 SD 185k
2006 S 500
2005 SLK 350

Why would the other 2 posters lie about having one then? Forced, did you photoshop that?

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

The t-stat housing on my '85 300D-T (CA version) has a temp sensor in it but I don't know if it's for the temp gauge, the aux fan, or something else. With the key switch on but the engine cold and not running, I tried grounding that sensor's wire. Nothing happened. None of my manuals say what that switch is for.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I'm betting that it's the same as the '84. The switch prevents the blower from operating when it's below 50C...........so it doesn't freeze you to death.

Jeremy, does your car get to 100C in traffic. Could you see if the aux fan comes on without the a/c being on? I bet it does.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

I bet it doesn't.

Well I bet MB doesn't design a car that overheats if the A/C isn't on. Thats just doesn't any make sense.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

This brand is not infallable. I am still searching for the water separator in the fuel system. Plus the warning system that water is present. Too expensive to have them ? Perhaps it's a built as no other kind of thing.