Hey so i thought I'd share my latest retrofit project. Couple of my mates have f8X m cars after seeing the seats i wondered if they fit the e92. I couldn't find any info or even pictures on google. After acquiring some from a damaged f80 i got to work trying to fit them.
At first i was pleased to find they bolted directly in. I swapped the connectors from f80-e92. With only 5 wires(power,canbus,lighting). It was easy to swap. The car did not like the f80 seat module at all and quickly rejected it. Because of the can protocol between the chassis. Because the wake up signal was no longer being conveyed after 10sec the seat shut down.
Luckily the passenger seat was simply a high current switch. All worked as it should except the heated seats. Using the e92 seat module i use it to simply work the heated seats instead of all other seat functions it used too.
After looks playing around it was looking as though it would not be possible aside from a can emulator that would relay the wake up signal. However this isn't easy. I was running out of ideas. I brought a very cheap pair of seats from a x1 at first for parts but then noticed it used the same style of connectors as the f80 but the car was only a 2010. Part of a total fluke i tested the module out and to my surprise it worked. It was enough to makes the seat stay awake however no heated seats because the x1 seats weren't heated. After that i was stoked and immediately sourced the heated version of the same module which worked perfectly.
Only last remaining problem is because they were from a 4 door the seats do not release forward which is a problem in a 2 door so ill order the parts and try convert them😂