mr12volt install - CD changer coding advice

fatbaldboy said:
switched the CDMM changer to the mp3 value and i can see multiple empty CDs in the head unit (so it worked) but no mr212volt interfaces appears.

Have you muted the head unit as that then only shows the cd screen.
 
Chippie said:
fatbaldboy said:
switched the CDMM changer to the mp3 value and i can see multiple empty CDs in the head unit (so it worked) but no mr212volt interfaces appears.

Have you muted the head unit as that then only shows the cd screen.
A very good point indeed, as I've done this on installation before :headbang:
 
Head unit not muted, I've toggled it on and off.
Still nothing :(
@anubiszed - can I change the VO value with bimmercode, do you know? What is that value?
 

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Alas I don't work with Bimmercode, so I don't know how it operates, hopefully someone who does can explain better.
But if you didn't have the multiple CD positions before, and you do now then I'd say you've done something with the VO already.
Just to check, you have done tge following:
Disconnected the Pink LVDS plug from the rear if the headunit and plugged it into the new Y LVDS, and the plugged the other end of the new LVDS cable (greeny blue) into the pink socket of the headunit.
You've unplugged the MOST connector from the old Quadlock connector, then having swapped it into the new MOST Y jumper, plugged the new end into the new Quadlock in the rear of the headunit?
So as your phone can see the Mr12volt box then you are obviously using the new Quadlock Y loom, as this is powering it, so I was wondering if you'd missed some connector out somewhere (as questions above)
 
Aaaaasand it was as easy as that.

I'd plugged the MOST connector into the old quadlock instead of the quadlock in the back of the media unit. I only noticed as it was dark out so could see the flashing red light from the back of the unit.

Also the suggestion of @anubiszed had it bang on!

Thanks for your help guys, much appreciated.

No time to feed all the wires and take apart gloveboxes tonight - probably one for the weekend.
 

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So in summary to my original ask:

I bought a fairly (I think) expensive obd adaptor for £85:
https://amzn.eu/d/55tzfja

I bought the bimmercode app for I think around £35.

My car was already prepped for cd changer from factory. You can see if yours is using mdecoder.com and looking for s694 in the multimedia section.

Using bimmercode to enable the unit to recognise mp3s then makes the multi CD appear in your idrive menu. That's where the MMI unit should show up.

Bimmercode instructions (thanks @b21)
From the 'home' screen of the app:
Headunit -> Expert Mode (toggle) -> 3000 HMI
Find CDMM_CHANGER_3 option and change it to mp3_cdc
CODE -> START CODING
 
fatbaldboy said:
So in summary to my original ask:

You can code the cd changer using bimmercode.

Not sure it's cheapest way but I'm happy.

I bought a fairly (I think) expensive obd adaptor for £85:
https://amzn.eu/d/55tzfja

I bought the bimmercode app for I think around £35.

To add the changer using bimmercode...

From the 'home' screen of the app:
Headunit -> Expert Mode (toggle) -> 3000 HMI
Find CDMM_CHANGER_3 option and change it to mp3_cdc
CODE -> START CODING

Err that’s what I told you in reply to your original post…. :tumbleweed: :headbang:

Tips for coding with Bimmercode
Headunit -> Expert Mode -> 3000 HMI
Find CDMM_CHANGER_3 option and change it to mp3_cdc
CODE -> START CODING
 
Gentlemen, changing the value of CDMM_CHANGER_3 does not give you CDC, it mearly allows the reading of mp3 files. To obtain CDC you need to tell the CAS, NFRM & CIC to look for the CDC in the first place, hence adding 672 to the VO.
And, as I stated earlier, the fact that there is the multiple CD positions, instead of just one, is the tell-tale. So somewhere you've either got to have done it, or it was already there.
 
Yep, I should have added that was from you. I was just summarising the thread is all.

B21 said:
fatbaldboy said:
So in summary to my original ask:

You can code the cd changer using bimmercode.

Not sure it's cheapest way but I'm happy.

I bought a fairly (I think) expensive obd adaptor for £85:
https://amzn.eu/d/55tzfja

I bought the bimmercode app for I think around £35.

To add the changer using bimmercode...

From the 'home' screen of the app:
Headunit -> Expert Mode (toggle) -> 3000 HMI
Find CDMM_CHANGER_3 option and change it to mp3_cdc
CODE -> START CODING

Err that’s what I told you in reply to your original post…. :tumbleweed: :headbang:

Tips for coding with Bimmercode
Headunit -> Expert Mode -> 3000 HMI
Find CDMM_CHANGER_3 option and change it to mp3_cdc
CODE -> START CODING
 
That's interesting. The only coding I did was the bimmercode change and I definitely didn't have multi-cd before.

It it possible that the bimmercode did that VO change as well - behind the scenes?


AnubisZed said:
Gentlemen, changing the value of CDMM_CHANGER_3 does not give you CDC, it mearly allows the reading of mp3 files. To obtain CDC you need to tell the CAS, NFRM & CIC to look for the CDC in the first place, hence adding 672 to the VO.
And, as I stated earlier, the fact that there is the multiple CD positions, instead of just one, is the tell-tale. So somewhere you've either got to have done it, or it was already there.
 
fatbaldboy said:
That's interesting. The only coding I did was the bimmercode change and I definitely didn't have multi-cd before.

It it possible that the bimmercode did that VO change as well - behind the scenes?



AnubisZed said:
Gentlemen, changing the value of CDMM_CHANGER_3 does not give you CDC, it mearly allows the reading of mp3 files. To obtain CDC you need to tell the CAS, NFRM & CIC to look for the CDC in the first place, hence adding 672 to the VO.
And, as I stated earlier, the fact that there is the multiple CD positions, instead of just one, is the tell-tale. So somewhere you've either got to have done it, or it was already there.

VO and thr associated CAS etc are one way..and usually the easy way to change major systems..you can often do things at a more individual level to the same effect..
 
OK, so there is something else here that may be the reason....
With CDMM_CHANGER_3 having a value of "cdc_vorbereitung", this translated into English is "CDC Preaeration", so if you had 694 (CDC Prep) then that would have meant that that value would have been there already. So changing it to mp3 would have told it that there was now a CD Changer. Thus I'll assume you have 694 and there being no need to add 672 to the VO. That then means that no other modules know you have CDC, but that's no problem really as they don't need to :D
Problem solved :rofl:
 
That must be it

This site I mentioned in my first post listed the 'options and s694 was on there under multimedia.

So it came prepped.

Mdecoder.com

AnubisZed said:
OK, so there is something else here that may be the reason....
With CDMM_CHANGER_3 having a value of "cdc_vorbereitung", this translated into English is "CDC Preaeration", so if you had 694 (CDC Prep) then that would have meant that that value would have been there already. So changing it to mp3 would have told it that there was now a CD Changer. Thus I'll assume you have 694 and there being no need to add 672 to the VO. That then means that no other modules know you have CDC, but that's no problem really as they don't need to :D
Problem solved :rofl:
 
I updated my summary on page 2 to hopefully better reflect the facts.

AnubisZed said:
OK, so there is something else here that may be the reason....
With CDMM_CHANGER_3 having a value of "cdc_vorbereitung", this translated into English is "CDC Preaeration", so if you had 694 (CDC Prep) then that would have meant that that value would have been there already. So changing it to mp3 would have told it that there was now a CD Changer. Thus I'll assume you have 694 and there being no need to add 672 to the VO. That then means that no other modules know you have CDC, but that's no problem really as they don't need to :D
Problem solved :rofl:
 
I struggled with mine when I was preparing for the install - from what I can see, the cd changer wasn't even a purchasable option on the 2016 cars.

But it just worked - so problem solved :)
 
I think I read somewhere that later cars were technically prep'd but like you say couldn't actually option one. Be interesting what values your vin shows.

matsmith749 said:
I struggled with mine when I was preparing for the install - from what I can see, the cd changer wasn't even a purchasable option on the 2016 cars.

But it just worked - so problem solved :)
 
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