kd7iwp

If you still have your car, would you be willing to take a photo for me of the ventilated seat buttons in your car? I'm trying to figure out which switches I need to get to do the retrofit from comfort seats that I currently have to some M5 ventilated seats I just picked up. Realoem doesn't show me any photos of the various part numbers and doesn't say which switch is on the top. On my driver side I need to have a DTC, then I think the middle needs to be for the active side bolsters, and the bottom does heat/cooling. Just can't tell for sure. Thanks!

Edit, I was able to track down the part numbers I want and find photos from ECS Tuning: https://www.bimmerfest.com/threads/m.../post-13428253

kd7iwp

Hmmmm, I can't get this working. I installed ventilated seats, and switches, and did a bit of coding with NCS Expert so that this screen now shows up, but it does not show me the fan speed or the heating level. Any chance you'd be able to share a .TRC file from your CCC unit?

kd7iwp

Ok, I got everything working as it should now. I needed to code:

SEATVENTILATIONto aktiv (this enables the feature I believe, so that it can show up in climate settings in iDrive)

SITZHEIZUNG_SLIDER to aktiv (this allows you to see the heating/cooling intensity level, you may not need this if you have separate heating and ventilating buttons) Since I also have active backrests in these seats (which I haven't wired in yet) I needed a button that had seat ventilation and heating all in one switch so it was important to have the level show up in iDrive.

TOGGLE_SEAT_CLIMATE to aktiv (this makes it so that when you press a heating/cooling button that the screen will only come on the display for a few seconds, rather than permanently)

I'm not sure if this was necessary, but I added $453 to my VO in my CAS and LMA units. I doubt it does anything but since I have the feature, figured it should be in my VO.

For anyone else interested in retrofitting ventilated seats, if you're coming from comfort seats it is plug and play. If you have a basic seat you'll have to do some other wiring and I know I've seen comfort seat retrofit threads elsewhere. First I just dropped the new seats in, and then got the new buttons for the dash. Immediately they worked, but I had no display. After I did the coding above it all works as it should now. Next I'll get the active side bolsters working next month.