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  #1  
Old 11-24-2021, 07:56 PM
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yellow connector x275 and x279 under seat with photos

Hello,

Do you know where the seat buttons are fed? I know that those that do not have the SMFA or SMBF module under the seat are fed directly from pin 9 of the connector X275 and X279 respectively. I've been looking at schematics and apparently it's pin 6 of the X275 or 6 of the x276. I don't know what pin 7 is for, I can't find it in the diagrams.







if you click on the image it opens in a new tab and expands

A greeting and thanks in advance

Last edited by blackshark; 11-24-2021 at 08:15 PM.
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  #2  
Old 11-25-2021, 03:17 AM
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I'm chasing heated seats, myself. But this guy at #6...

https://www.bimmerfest.com/index.php?posts/13558745

...seems to have a firm grasp on schematics in the areas we're seeking a solution.
I'd contact him for starters....
Cheers!

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  #3  
Old 11-25-2021, 08:42 AM
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Quote:
Originally Posted by getty150 View Post
I'm chasing heated seats, myself. But this guy at #6...

https://www.bimmerfest.com/index.php?posts/13558745

...seems to have a firm grasp on schematics in the areas we're seeking a solution.
I'd contact him for starters....
Cheers!

Sent from my SM-A115U using Tapatalk
Hello,

Thanks for answering,@getty150 the truth is that this user M_Bimmer is a phenomenon!

They talk about an X3 but from what he says he knows very well what he does ... I'll get in touch with him and say what he tells me here and so we'll all know something else

thanks for your input!
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  #4  
Old 11-25-2021, 08:53 AM
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Quote:
Originally Posted by blackshark View Post
Hello,



Thanks for answering,@getty150 the truth is that this user M_Bimmer is a phenomenon!



They talk about an X3 but from what he says he knows very well what he does ... I'll get in touch with him and say what he tells me here and so we'll all know something else



thanks for your input!
Great...hope that helps...keep me posted.
Happy Thanksgiving

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  #5  
Old 11-25-2021, 08:56 AM
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Quote:
Originally Posted by getty150 View Post
Great...hope that helps...keep me posted.
Happy Thanksgiving

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I just answered him in the thread that you gave me, you can see it I will also send an MP if he does not answer through the thread.
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  #6  
Old 11-26-2021, 08:21 AM
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Old 11-26-2021, 08:38 AM
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Quote:
Originally Posted by getty150 View Post
Great...hope that helps...keep me posted.
Happy Thanksgiving

Sent from my SM-J727T using Tapatalk
Hello,

Now I am trying to find out the following:

for entries that are not active, it is necessary that the SMFA and SMFB module be connected to the K_CAN?

I suppose that if they have memory and we want to make use of it, the answer will be Yes.

then the following question comes to me:

pins 2 and 3 of X279 are from K_CAN so where do I connect them to enable minorities? to two pins whatever the sea. K_CAN because it is a network and it doesn't matter? Should they be free or can I weld them to ones that are already occupied?

So he learned the memories, say the keypads with memory, when using the memory, they work with the BZM module and this communicates with the CAS through K_CAN S and this in turn with the module under the seat through K_CAN P.

I also know that you have to feed the keypad by pulling a line to a fuse from the rear fuse box on the right side of the trunk to a 30G 5A fuse. since pin 4 or 9 that powers the module is 30G and 30A.

To save us from throwing out the line, it can be connected to another pin that is already connected to a 5A and will never be used at the same time .... I can get the mass by screwing to the base of the seat with a simple ring socket. although I think it is better to go to pin 8.
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Old 11-26-2021, 09:16 PM
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Old 11-28-2021, 01:05 AM
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Old 12-01-2021, 12:45 AM
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