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E28 (1982 - 1988)

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Old 11-21-2011, 11:23 AM
idc4mhc idc4mhc is offline
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Location: NC, USA
Join Date: Aug 2008
Posts: 40
Mein Auto: 1986 325 E30
Mystery Switch

Anyone know what this is?

About the size of a window switch.

I was thinking it may be aftermarket at first, but then I noticed the tiny BMW stamp and an LK stamp in a circle on the back.

The seven prongs are identified by stamped numbers starting from top left as: 2, 7, 4, 5, (one unmarked), 1, and 3. Stamped number between prongs: 03 8313 00;

Old faded paper label on side of switch states:
US. 83 [illegible];
BMW [illegible];
1 370 097;

And I just realized that the three divets are small switches also. So it has a long bar switch on top, three in the divets, and three small buttons on bottom with the LEDs in between them.

Maybe from older 5 or 6 series? You can text me too if you prefer: 252 622-5O2O
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Last edited by idc4mhc; 11-21-2011 at 11:24 AM.
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Old 11-21-2011, 03:47 PM
south26 south26 is offline
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Location: Dayton, OH
Join Date: May 2009
Posts: 1,538
Mein Auto: 535i 1989
Hi, I have no idea, but I have never seen this before on a e28.

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Old 11-22-2011, 07:47 PM
IEbimmerguy's Avatar
IEbimmerguy IEbimmerguy is offline
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Location: Cali
Join Date: Oct 2010
Posts: 129
Mein Auto: E38, e23, e3
That's a power seat switch for the "memory" setting. I have that in my 735i.
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