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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY Powered seat retrofit (WIP)



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      01-19-2020, 05:32 AM   #397
david in germany
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Retraced, everything wired to where it should be... nothing.. I give up.

Edit
Ok, tried one more thing,
Recoding iaw this thread.
https://www.e90post.com/forums/showthread.php?t=1674110
I HAVE HEAT!
Woooooohoooooo!
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Last edited by david in germany; 01-19-2020 at 08:13 AM..
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      01-20-2020, 01:08 AM   #398
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Quote:
Originally Posted by david in germany View Post
Retraced, everything wired to where it should be... nothing.. I give up.

Edit
Ok, tried one more thing,
Recoding iaw this thread.
https://www.e90post.com/forums/showthread.php?t=1674110
I HAVE HEAT!
Woooooohoooooo!
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      02-03-2020, 11:37 AM   #399
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hi, first time posting, and am hoping I’m in in for an easy job. I have 2 2011 e90s, and am looking to swap some stuff before I sell one. One has manual heated seats and the other has powered heated seats. I want the manual seats but just the seats to go in the powered seats place but remaining the power seat function in that car and vice versa, if that makes sense. Am I going to be able to swap the seats and plug?

Last edited by polo 1992; 02-03-2020 at 10:15 PM..
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      02-04-2020, 09:12 AM   #400
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Hi all! Thank you EVERYONE for all the contributions thus far.

I have a slightly different situation and hoping someone can clarify for me.

Iíve currently got MANUAL, HEATED and BOLSTER sport seats in my 2013 E82.

I picked up a set of ELECTRIC/MEMORY HEATED LUMBAR BOLSTER seats/interior.

I am going to swap the full seat backs and seat cushions from the ELECTRIC base onto the MANUAL bases. I have no problem with the mechanical specifics of the swap.

My question is:
Is there a good way to allow for the LUMBAR adjustments after itís been swapped onto the MANUAL frame? I read that BOLSTER and LUMBAR run off the same air pump but I would need to fit the switch unit to the MANUAL frame. What sort of wiring would I need to do to make this happen? Would wire taps off of the stop valve wiring be sufficient?

Thanks in advance!

Pic for attention
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      02-10-2020, 02:06 AM   #401
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Hello All,

Thank you very much for the great thread.

I have an issue that is quite complicated and any help would be greatly appreciated.

I have an E93 2007 which originally comes from the UK.
The car is fully converted from RHD to LHD with completely replaced wiring harness.
Seats are powered and heated from the RHD with control modules from LHD car.
Both seats have the black control modules and K-Can communication.


All was working fine before I have messed something with the coding.
I would like to ask for some help with the following issues :
1. Seat control forward, backward is reversed.
2. Easy entry buttons are no longer operational
3. In reverse gear the left mirror tilts down (instead of the right)
4. When the Backrest is unlocked - it displays on the Idrive Passenger for the left seat and Driver for the right seat (it should be the other way arround)

I am sorry if my description is not detailed enough, but I will try to add all necessary.

Many thanks in advance for all advices.
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      02-11-2020, 11:22 PM   #402
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the VO/FA list used in coding contain RHD/LHD attribute
the seat wiring harness also code which seat is driver and which one is passenger
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      02-14-2020, 09:34 AM   #403
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Quote:
Originally Posted by ptpending View Post
the VO/FA list used in coding contain RHD/LHD attribute
the seat wiring harness also code which seat is driver and which one is passenger
Hello,

Thank you so much for the feedback!

I have changed the VO/FA to LHD and coded both seats modules to factory settings, unfortunately without any improvement.

Would you please let me know what should i change in the wiring harness of the seats ?

Many thanks in advance!
Best regards from Bulgaria!
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      02-16-2020, 06:40 PM   #404
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Hi, I have one question. I got M3 swapped seats and I am not sure if they are heated. Number of seat module is 61359264974. My question is, if they are heated?
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      02-24-2020, 01:55 AM   #405
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Quote:
Originally Posted by donchev View Post
Hello All,

Thank you very much for the great thread.

I have an issue that is quite complicated and any help would be greatly appreciated.

I have an E93 2007 which originally comes from the UK.
The car is fully converted from RHD to LHD with completely replaced wiring harness.
Seats are powered and heated from the RHD with control modules from LHD car.
Both seats have the black control modules and K-Can communication.


All was working fine before I have messed something with the coding.
I would like to ask for some help with the following issues :
1. Seat control forward, backward is reversed.
2. Easy entry buttons are no longer operational
3. In reverse gear the left mirror tilts down (instead of the right)
4. When the Backrest is unlocked - it displays on the Idrive Passenger for the left seat and Driver for the right seat (it should be the other way arround)

I am sorry if my description is not detailed enough, but I will try to add all necessary.

Many thanks in advance for all advices.

Just to shortly update that it turned out that both seats have different wiring harness. Once you switch them - all works fine.
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      11-19-2020, 04:02 PM   #406
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Quote:
Originally Posted by MichalS View Post
Hi Folks,

There is one wire with two pins and round socket coming out of the inner rail of the passenger seat. I couldn't figure out where it goes so i left it not connected. Maybe this is the reason. See the picture below. Any idea where it goes? there is no place for it in the big yellow plug.

I read this whole thread and went back a second time to read the first few pages. Really good stuff. Sheds a lot of light on swapping seats and issue related to that. I also have searched all over google for more info.

There are a few things I have not seen or barely seen and that's the Seat Position Sensor(like the pic above part #65779125897), and the different seat modules that exist.

Start with the position sensor: It's part of the airbag system and if your car has that plug on the car harness but the new seats don't you will trigger the airbag light to come on. I read one thread on another forum where 128I guys swapping seats figured this out. Other than that I can't find any info. I have a 2012 335i e92 pretty high optioned car. According to the vin it originally came with heated sport seats. But when I bought it there was standard powered, heated, lumbar and memory but no bolsters. Let's not get into that. So I swapped in sport seats with power, lumbar, bolster, heat, and memory. Neither seat has the position sensor so that black little plug on the car side was left unplugged. There has always been an airbag light on this car and the codes are for both driver and passenger position sensor. 93BF & 93C0. There is the white plug for active head rest which seem to be working. So who has the little black plug for the position sensor? I will probably end up buying new sensors off ECS and hope that solves that issue.

Now the modules: After swapping seats everything works except the heat. Which is weird because the old seats the heat did work. I have yet to check the pins in both seats and the car side but I will here soon. The new sport seats have big white modules under them both, but the old seats have big black modules under both. I can find a little info on the black modules but not the white. Looking at pics there is more plugs for the white modules. Why is there two different big modules? I'm not even sure the new sport seats are heated but I was told they are. I still need to pull the seats back out and investigate what's going on. When I push the seat heating button on the dash nothing happens at all. I hope more people can shed light on the difference's between the big modules.

Sorry for the long post! Will report back what I find.

Edit: I just came across some info that suggest the white module ending with 861 is heated and 860 is not. Apparently the white module uses the same plugs as the F8x cars. So maybe the white module is newer than the black. My module is the 861 so they should be heated

Last edited by Yotaismygame; 11-19-2020 at 04:33 PM..
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      11-30-2020, 01:03 PM   #407
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I checked the seat plugs from the old seats to the new ones and they are wired exactly the same. The car side matches as well. But these new sport seats I added do not have heat I guess. They have the big white seat module under both sides. Wiring appears to be there. The old non sport seats have the big black boxes under both and heat works. I'm lost now.
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      12-01-2020, 02:50 AM   #408
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you can check if the modules have pins in the heated mat connection sockets
modules without heating simply have empty sockets
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      01-05-2021, 09:25 PM   #409
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Quote:
Originally Posted by ptpending View Post
you can check if the modules have pins in the heated mat connection sockets
modules without heating simply have empty sockets
I missed your reply. Does this pic help?
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      01-05-2021, 09:51 PM   #410
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I did end up installing the seat position sensors. I'll get pics another time. It was difficult to find where they attached on the seat and the internet has almost no pics of said sensors. After clearing the codes the air bag light went off. The sensor is two pieces and the bottom sensor needs a hole drilled for it to mount. All is good with these seats now except for the heat not working.
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      01-05-2021, 09:55 PM   #411
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Is there a chance the coding needs to be different for the black vs white big modules?
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      01-06-2021, 02:53 AM   #412
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Quote:
Originally Posted by Yotaismygame View Post
I missed your reply. Does this pic help?
i hope this pic will give you some hints
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      01-06-2021, 10:00 AM   #413
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I'll take another hint
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      01-08-2021, 01:16 PM   #414
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I'm thinking no heat since I only have 1 of the 3 plugs you pointed out.
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      01-16-2021, 09:50 PM   #415
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hey guys, it's nice to see that this thread is still useful 10 years after it started.

I still run my retrofited seats without any issue.

good luck!
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      02-01-2021, 11:12 AM   #416
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is there any issue if i merge pin 4 with pin 5 ?
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      02-02-2021, 09:00 PM   #417
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2008 BMW 128i  [10.00]
1992 Honda Beat  [10.00]
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This thread has been a huge help, thanks to all!

I have an 08 128i that came with electric memory sport seats (both with seat modules) and I just installed 2006 330i electric memory heated seats. The driver's side works 100%, and passenger seat almost everything works except heat (has just seat heat module). I imagine I just need to move or run a couples of wires, but where lol? I have pins 1 and 5 occupied on the seat harness
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      02-03-2021, 03:14 PM   #418
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so what happen if i connect pin5 on steady plus ? it will work ? or it must only connect to ignition plus ?
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