Anyone know what year/ model this glow plug relay was used in?

Mercedes 002 545 06 32

Does this unit have an internal temperature sensor? If it does, can you identify it?

Anyone have a schematic of it?

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Was used on all 5-cylinder diesel models from 1979 (US-ver. only from MY1981) up to 01/1989 (except national versions).
Yes, this relay has the internal temperature sensor.

I don't know what year/model that unit is from. The temperature sensor is an ntc thermistor and has only 2 leads. Some of the earlier controllers used an external sensor. The sensor on my 1984 W123 is on the circuit board. Here is a link some factory info on the different year/model glowplug controllers, and how they worked. Some schematics are shown:
Operation of preglow system

The link you provided is a great resource on the Mercedes glow plug system. Looks like it is from the FSM?

After reading it, I have a much greater appreciation of how well designed this glow plug relay is.

I didn't know this before, that the relay is vented via a hole in a plastic pin (between terminals 61, 62). I thought the relay is totally sealed but it is not! The cover must be in place otherwise water will get in!

Installing preglow time relay with modified ventilation

__________________
85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Yes, that link appears to be of pages from the FSM - courtesy of someone in Poland. I also didn't know about the vent . I also have a spare controller and the circuit board is different in that one. I plan to modify it for afterglow. There are lots of links out there on how to modify the controller for afterglow, but the principle is to intercept the starter signal (purple wire) which turns off the glowplugs once a 12vdc positive pulse is received.

That is the relay that was supplied with the "fast glow + post-glow" retrofit kit for the OM617 family, and I believe was standard on some w124s and w201s and other models in Europe.

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

Yes, with the fast glow, but without post-glow.
Afterglow was available only from 02/1989 (earlier for national versions).

I say this with great respect, but you guys are real freaks.

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

They typically look like a black dime with 2 leads coming off it.

Ive had about 10 GPR's apart and as of yet not 2 of them are the same.

The schematics shown by MB do not show any of the electrolytic capacitors which are a highly suspect common failure item. When replacing them, make sure the new capacitor has the same or higher voltage rating.

Radio shack still has them or many many sellers of them on ebay. Just remember when buying from Asia you
will have a roughly 10/15 day delivery. Much cheeper from Asia.

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

The relay 002 545 06 32 above is a spare that I have. The one in my 85 300D has p/n 001 545 98 32, made by VDO. What's the difference between the two? I will open up the VDO 001 545 98 32 unit when I get a chance.

__________________
85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Do the relay connections orient the same way?

I found out recently that some are designed for the wiring bundles for the two connectors to enter from toward the rear of the car - I presume these were from w126s originally? On my '85 it is clearly meant that the wiring bundles enter from the front. The relay I installed a couple of months ago is the opposite.

The difference, besides having to ply the wires to the other end of the relay, is that the cover ends up with the open end facing backward and up, and in the current extreme temperature swings we have had here, I found that water had collected in the recess around the connectors.

I have therefore been reading the info about differences in ventilation holes with interest, given the intermittent issues I've had, which have particularly coincided with the days when the temperature was flucuating a lot. I had also assumed the relay was a sealed unit....

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

My spare relay I think came from a W123, don't know whether the wire bundles came in from the front or rear. On my 85 wire come in from the front and relay mounted at an angle so water drains out instead of trapped. Strange you have one that is opposite??? Do you have a part number?

One way to find out if you have water in the relay without taking it apart is put it in a glass jar with a sealed lid under hot sun for a few hours. If it fogs it has water.

__________________
85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

No any difference, except manufacturer.
002 545 06 32 (BOSCH) = 001 545 98 32 (VDO).

Today the BOSCH unit not available and replaced by VDO unit.

Thank you!

__________________
85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Info for freaks. Huh
The 002 545 06 32 were applied on chassis:
126.120
123.130/132/133/150/153/190/193/105
124.105/106/185/125
602.461/462/466/467/468/471/472/476/477/487
602.411/412/413/416/417/418/421/422/423/426/427/428
611.417/418/467/468

Salut!