W123 OEM Heated Seat Switch & Wiring - Mercedes-Benz Forum

 
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post #1 of 7 (permalink) Old 04-23-2012, 09:18 AM Thread Starter
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W123 OEM Heated Seat Switch & Wiring

Attached is a picture of an OEM Heated Seat Switch from a 1985 300D. A somewhat rare option. I have almost all of the wiring harness, the correct bracket that holds the plug under the seat, but not the plug and wiring that actually goes to the switch. $50.00 plus $5.35 shipping. I saw just the switch on FleaBay going for $75.00 a few months back (there were a few bids, so I do not know what the final price was, but it was at least $75.00), and that was just the switch. There are a bunch of posts and threads on retro fits for the actual heating elements in the seat. PM if interested. Thanks.
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post #2 of 7 (permalink) Old 04-23-2012, 10:04 AM
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As mentioned elsewhere, this isn't OEM at all.

There were two versions of these - old-style W123's which used the same window and seat heater switches as W116's, and new-style W123's which use the newer W126-alike style. The correct switches look like this:





How about that OEM carphone option in the older model!

I've got six of the older-style switches available, two of them barely used from the rear seat heater option, two unused NOS (!!), and two that have some usual degree of wear from the front. The black plastic surround is broken on one of those two. Both switches function correctly and light up when switched on. I am willing to sell them if there's interest, but not any wiring otherwise.
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post #3 of 7 (permalink) Old 04-23-2012, 10:13 AM Thread Starter
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Might be true, but I wonder why these are selling on FleaBay, et cet as advertised. Also, if it was not OEM, then why is there option code for it ? Also, how could there be the precise bracket and plug under the seat? Your pictures did not post. Can you re-post them so that I can learn something and see what these are supposed to look like. As for rarity, is was an uncommon option and somewhat rare. Sounds like you cornered the market on them. LOL.
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post #4 of 7 (permalink) Old 04-23-2012, 10:35 AM
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If you right-click the images and open in a new window/tab, they'll work. Here are direct links though:

http://www.benzworld.org/forums/atta...00544058pm.jpg

http://www.benzworld.org/forums/atta...00544120pm.jpg

I only have six because I bought a car with four of them (it's one of the primary reasons I bought the car), and found the NOS ones online (seller had more, but they sold VERY fast and were over $100 each), so I bought two to replace the worn front ones.

There was an option code because seat heaters were an option. I think it was even possible to get a driver seat only option... But the switch(es) were never in the upper console panel and never looked like what you've got.

The plug comes from the heater element which is simply sewn to the pad under the skin (unlike W126's which integrated it into the skins). Aftermarket seat heaters are common, and you can even still buy the elements new from Mercedes for around $100 each last I checked.

I would be interested in the bracket though if that looks correct - mine are rusty. I also need some good elements as they were removed by a PO from the rear seat.
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post #5 of 7 (permalink) Old 04-23-2012, 10:47 AM
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Here's the pad installed on the squab when I removed the skin:
IMG_0106

Here's how it's sewn on:
IMG_0098

(these from a W116). Not sure if the orthopedic seatback option was available in W123's, but here it is in the W116 (simple to get the pad/strap/hole trim if you ever see it):
IMG_0099

When both options are present, the seat heater is sewn on OVER the orthopedic pad:
IMG_0097

These modules attach to the B-pillars (where the extra holes are) for the rear heat control:
IMG_0093
IMG_0094
IMG_0063
IMG_0133
I'm looking for these in green and/or red and possibly other colors if anybody has them.
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post #6 of 7 (permalink) Old 04-23-2012, 10:52 AM
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The newer-style switches are the same on the W126 - The two in this picture are available for sale if anybody's looking for them for a late-model W123 or any W126:
IMG_0080
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post #7 of 7 (permalink) Old 04-23-2012, 11:23 AM Thread Starter
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Garage
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Hey,

The bracket is in good shape. Check your email. Thanks.
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