Your specialist subject: The life and times of the BMW CIC unit in E89s

[TiAgAu]

AnubisZed wrote: ↑
B21 wrote: ↑
john-e89 wrote: ↑
Can you not get a 2nd hand 677 unit…?
Not many 677s were ever fitted to E89s..so you need a written off E89 with a 677..most breakers in my recent bitter experience haven't a clue about the car and its sub systems..it also has to be DAB'd which I guess most 677 are..and even then cause the VIN is encoded i 4 places on the CIC that still needs to be coded to your VIN to allow maps to be used..so the simple answer is no!
?? What?

609 - CIC
676 - Business sound system, speaker output to amplifier.
677 - Professional sound system with MOST fibre optic sound output.

The headunits are all the same. To change the system from 676 to 677 you simply remove 676 from the VO, and code the car accordingly. You then code 677 to the VO and code accordingly. Once this new code is then written to the CIC unit it then knows not to amplify the sound and, in so doing so, not to output via the wires but to instead to feed out via the fibre optic. It's a standard coding process that takes no more than about 10 minutes at most.
So, in short, it makes no difference where the headunit came from, as long as it has DAB, it'll code just the same.
That’s the theory…did exactly that..when I tried to do so this weekend it said it had done it..but no audio..no cigar..

Maybe the Mr 12 Volt MMI or ID4Motion got in the way…even if had it still wouldn’t sat nav..we covered that earlier..

That’s the theory…did exactly that..when I tried to do so this weekend it said it had done it..but no audio..no cigar..

Maybe the Mr 12 Volt MMI or ID4Motion got in the way…even if had it still wouldn’t sat nav..we covered that earlier..

Well you dont need to touch the vehicle order since #677 will already be in your VO cas/frm. Did you change anything there? Did you default code SG_CODIEREN the CIC? I know this wont get nav working etc but it's a start.

Everything you need to really know is in this thread. But since it's not a full retrofit you don't need to do all of it.
https://www.e90post.com/forums/showthre ... ht=faxdata

[B21]

I used a chap in Barnet..he was only half ok…my box that had problems he couldn’t fix..the replacement unit he coded but some things are a bit whacky..

But with an ID4Motion cluster and a MMI Mr 12 Voly box both sitting on the can bus I’m not sure what / who are causing the issues..

I’ll experiment further on that this winter..

Thnx for the link..very interesting