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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jul-20-2006, 01:11:13 AM   #11
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I currently have all options on my oem seats (heat, lumbar, power).. but am considering swapping for oem seats with everything except heat. so i am curious if it's possible to take the existing heating elements out of my current seats, and put them inside the new seats?

if you guys have any insights please let me know TIA.
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Old Thu, Jul-20-2006, 01:16:44 AM   #12
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Quote:
Originally Posted by geonet
I currently have all options on my oem seats (heat, lumbar, power).. but am considering swapping for oem seats with everything except heat. so i am curious if it's possible to take the existing heating elements out of my current seats, and put them inside the new seats?

if you guys have any insights please let me know TIA.
yeah i believe so. im planning to do that with my CSL seats. but i dont know if the heating element requires some type of pocket in the seat or can i just secure them between the paddings?
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Old Thu, Jul-20-2006, 01:18:35 AM   #13
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Quote:
Originally Posted by geonet
i am curious if it's possible to take the existing heating elements out of my current seats, and put them inside the new seats?
As soon as I am able to get my hands on some seat covers with heating elements, I will let you know. So far its not going so well!
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Old Thu, Jul-20-2006, 02:49:51 AM   #14
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thanks fern thats exactly what I was wondering.. whether I could re-use everything (and not have to buy any new pieces from the dealer).. I'm assuming the element that actually heats the seats is removable, and can somehow be placed into the new seats (maybe the pocket that holds the heating element is removable too?) i'm hoping that I can remove all the wiring from the old seats too, and re-use them


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Originally Posted by daytonaviolet
yeah i believe so. im planning to do that with my CSL seats. but i dont know if the heating element requires some type of pocket in the seat or can i just secure them between the paddings?
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Old Thu, Jul-20-2006, 02:50:22 AM   #15
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that sounds good, thanks!

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As soon as I am able to get my hands on some seat covers with heating elements, I will let you know. So far its not going so well!
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Old Thu, Jul-20-2006, 03:03:22 AM   #16
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It is going to be a bear of a job to pull off the old leather and swap (by reading through the dealer manuals) - if you can swap for seats w/heat instead definitely go that route!!

I wouldn't bother trying to swap if it wasnt for the fact that my leather is so new - if it was worn a bit I would just buy new OEM covers with heat.
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Old Thu, Jul-20-2006, 07:38:39 AM   #17
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yeah I have been looking for heated seats for a while but no luck yet, I was just hoping the heating elements wouldnt be too hard to swap. well thanks and let me know if you find anything else out..


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Originally Posted by YYZ-M3
It is going to be a bear of a job to pull off the old leather and swap (by reading through the dealer manuals) - if you can swap for seats w/heat instead definitely go that route!!

I wouldn't bother trying to swap if it wasnt for the fact that my leather is so new - if it was worn a bit I would just buy new OEM covers with heat.
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Old Sat, Aug-05-2006, 12:59:16 AM   #18
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Got it to work...

If you are going to try to pull the heating elements from a seat, you have to remove all the threads as they are sewn in - the seams will come apart (obviously) and you'll be left with a patchwork of leather. I wouldn't recommend trying this unless you're willing to have someone re-stich all the surfaces.

If anyone needs a leatherette headrest, LMK! - that's about all that is left of the donor seat.

Photos to follow.
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Old Sat, Aug-05-2006, 01:00:46 AM   #19
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Originally Posted by YYZ-M3
Got it to work...

If you are going to try to pull the heating elements from a seat, you have to remove all the threads as they are sewn in - the seams will come apart (obviously) and you'll be left with a patchwork of leather. I wouldn't recommend trying this unless you're willing to have someone re-stich all the surfaces.

If anyone needs a leatherette headrest, LMK! - that's about all that is left of the donor seat.

Photos to follow.
wow.. let's see the pics
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Old Sat, Aug-05-2006, 01:12:53 AM   #20
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The wiring is pretty simple - there are 2 wires that run from the switch panel to each seat (power and a temp sensor wire). I made up a harness (see pic) with the proper BMW connectors at each end, so I can simply slide them into the existing connectors and everything is good to go. I just wired everything up and tested it, I haven't yet installed the heating elements in my seats.

I was lucky and found the switch panel with the extra heated seat buttons from a guy in Germany. You cannot simply add the buttons to an existing switch panel, you must replace the entire unit. Cost was about $100.

I trashed the donor seat - I honestly didnt even make an effort to salvage any part of it, so I can't tell you how to take it apart "carefully" until I disassemble my own.

The other pic is the heating elements themselves. I think they are pretty self-explanatory.

Total cost on this will be about $550 - I paid $200/seat (they are actually from a 2004 sedan), $100 for the switches, and probably $50 for various wires, connectors, etc. I may have to get an upholstery shop to install the elements, not sure about that yet.

Cheers
Attached Images
File Type: jpg elements.jpg (121.1 KB, 180 views)
File Type: jpg harness.jpg (182.0 KB, 141 views)

Last edited by YYZ-M3; Sat, Aug-05-2006 at 01:16:39 AM.
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Discussing Heated Seat Retrofit in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)