Memory Seats Retrofit - K-Bus help

[nick_l]

I've fitted heated memory seats in place of my non heated manual seats in my 2007 E85. All working fine with the exception of the memory function. I understand I need conect it into the k-bus somewhere in the car. I thought I found a suitable place to connect, into a wire behind the seat heating buttons...but this just caused the radio to totally spaz out on me and memory didn't work.

Has anyone else successfully managed to get the memory side working? If so how?

[mac27040]

might be of use!!!

A21 Driver's seat memory

Plug connector overview

X650 12-pin, black Plug connector Driver's seat memory
X1465 15-pin, black Plug connector Driver's seat memory

Pin assignments at plug connector X650


1 Not used

2 A Positive activation Drive, driver's seat backrest angle adjustment Drive, driver's seat backrest angle adjustment

3 A Positive activation Drive, driver's seat height adjustment Drive, driver's seat height adjustment

4 A Positive activation Drive, driver's seat angle adjustment Drive, driver's seat angle adjustment

5 A Positive activation Drive, driver's seat forward/backward adjustment Drive, driver's seat forward/backward adjustment

6 Not used

7 Not used


8 E Negative activation Drive, driver's seat backrest angle adjustment Drive, driver's seat backrest angle adjustment

9 E Negative activation Drive, driver's seat height adjustment Drive, driver's seat height adjustment

10 E Negative activation Drive, driver's seat angle adjustment Drive, driver's seat angle adjustment

11 E Negative activation Drive, driver's seat forward/backward adjustment Drive, driver's seat forward/backward adjustment

12 Not used

Pin assignments at plug connector X1465


1 A Signal Motor, driver's seat upward tilt Drive, driver's seat angle adjustment

2 A Signal Motor, driver's seat downward tilt Drive, driver's seat angle adjustment

3 A Signal Motor, driver's seat sled back Drive, driver's seat forward/backward adjustment

4 A Signal Motor, driver's seat sled forward Drive, driver's seat forward/backward adjustment

5 A Signal Motor, driver's seat height up Drive, driver's seat height adjustment

6 A Ground Ground point

7 A Signal Motor, driver's backrest forward Drive, driver's seat backrest angle adjustment

8 E Terminal 30 LHD: Fuse F29 RHD: Fuse F15

9 E/A K-bus signal K-bus connector

10 A Signal Motor, driver's seat height down Drive, driver's seat height adjustment

11 Not used

12 Not used

13 Not used

14 A Signal Motor, driver's backrest back Drive, driver's seat backrest angle adjustment

15 Not used

[mac27040]

also this might help

http://www.realoem.com/bmw/enUS/showpar ... Id=61_1636

[vester86]

I had no problem at all fitting mmory seats in my Z4 (2003my), but my seats come from a 3 series (M3) somthat might be a Difference?

[srhutch]

I had no problem at all fitting mmory seats in my Z4 (2003my), but my seats come from a 3 series (M3) somthat might be a Difference?

More likely that being a facelift Bmw left half the wiring out.

[vester86]

Good point you have there, early Z4's have a full wiring loom.