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MMI Components

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Old 02-07-2014, 01:18 PM   #1
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Default MMI Components

Greetings

I'm using a fiber optic bypass tool to try and identify which component is preventing my system from running.

I bypassed 7 so far:

Three in the back wheel well
One under the front drivers seat carpet
One in the glove box
Two behind the glove box

Can someone tell if or where the others are?

Also, whatever component that is supposed to be generating the fiber signal is apparently doing so as I can see the red light at each wire when I've unplugged them.

Car is apart so any help would be appreciated.

Thanks
Chris
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Old 02-08-2014, 07:04 AM   #2
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84 views and no one knows or has had to deal with this before!?!
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Old 02-08-2014, 07:35 AM   #3
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Hello

Well it looks to me that if you started in the trunk and tested each fiber optic component one at a time and ended up at the MMI control head module behind the glove box last, then I think it would be the MMI control head as it is the Control Head, bypassing the MMI CH would yield no operation.

Are you going to scan and post said scan so we may have more information to help diagnose your problem ?

Also be sure to run an "Optic Scan".

Have you checked all the buttons on console for sticking, any spills on buttons ?
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Old 02-08-2014, 07:50 AM   #4
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Thanks

Yes, I did a scan

Optical Bus Diagnostic : 3dB Attenuation

Controller...........Electrical.Optical
19-CAN Gateway.......OK.........ERROR
07-Control Head......ERROR......ERROR
0E-Media Player 1....OK.........ERROR
77-Telephone.........OK.........ERROR
47-Sound System......OK.........ERROR
67-Voice Control.....OK.........ERROR
56-Radio.............OK.........ERROR
37-Navigation........OK.........ERROR
0F-Digital Radio(SAT.OK.........ERROR
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Old 02-08-2014, 07:54 AM   #5
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Also, no spills or stuck buttons.

At this point if anyone can recommend a competent shop here in Southern California I'll take it over, otherwise I'm off to the dealership. My experience with them is typically Replace Replace Replace.
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Old 02-08-2014, 07:55 AM   #6
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Default WAIT A MINUTE.......

??? Why did you start a new thread ???

You all ready had a thread where you were getting answers from people who are trying to help you, then you make a comment "84 views and no one knows or has had to deal with this before!?!" what's with that....

Now I see your scan in the other thread you started for the same exact problem, and it looks to me if you did all of the other modules one at a time and nothing came on, then I say MMI CH is the culprit, I have personally helped people from this board with the same situation as you and it was the MMI CH.
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Old 02-08-2014, 08:00 AM   #7
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Your new scan shows plain and simple that the MMI Control Head has "ERROR ERROR" all the rest show "OK" for electric but no optic.


Controller...........Electrical.Optical
19-CAN Gateway.......OK.........ERROR
07-Control Head......ERROR......ERROR
0E-Media Player 1....OK.........ERROR
77-Telephone.........OK.........ERROR
47-Sound System......OK.........ERROR
67-Voice Control.....OK.........ERROR
56-Radio.............OK.........ERROR
37-Navigation........OK.........ERROR
0F-Digital Radio(SAT.OK.........ERROR
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Old 02-08-2014, 08:24 AM   #8
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Thanks Johhny J...

Sorry if the double thread was out of line......I had a separate question on module counts and I didn't want it to get lost in my previous two pages of scans.

I did bypass that too but I guess doing that was pointless if it controls everything

Off to ebay or the internet for finding a control module.

Thanks again
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Old 02-08-2014, 08:41 AM   #9
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Do you have rear view camera ?
if so this one


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Old 02-08-2014, 08:44 AM   #10
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Remote repair is difficult by default, but bypassing answers makes it impossible.

"If the system start working it is bypassed module. Or at the end MMI Control Module".

If it was not clear enough we could clear it in a next post. New tread doesn't help at all.

Last edited by mishar; 02-08-2014 at 11:11 AM.
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Old 02-08-2014, 08:54 AM   #11
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No camera

But thanks....

New module is about $1,400.00

I'll keep looking for a used unit
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Old 02-08-2014, 09:06 AM   #12
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Something you should know, if you buy a MMI CH from Europe removed from a European model then you will have to flash the module to USA specs, also you may or may not need to go to the dealer for component protection removal of said module, I have purchased 2 from Europe and neither one required "CP" removal, I just installed and flashed with latest US MMI Version, now I have also installed 2 units that were US models and 1 of them did go into component protection mode ie "no sound", that will cost $130.00 +/- at the dealer to be removed, also note that even though the 2 units where US models they still had to be flashed to the latest USA MMI Version 4610 because they had much earlier versions.

Last edited by JohnnyJ A6Q; 02-08-2014 at 09:09 AM. Reason: s
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Old 02-08-2014, 09:15 AM   #14
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Very helpful...

I may have found one at a local junkyard.
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Old 02-08-2014, 09:31 AM   #15
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Great,
here is one in NC for $200 but it is from a S5 and has camera/ TV input.

Misha,

Did we ever conclude that because HW numbers were the same and that the units would be flashed to say A8 MMI version 4610 that it then changed the software in said MMI CH, I for the life of me today cannot remember, I know I used Q7 and or 8TO parts for my RVC retrofit and all works just as it was in an A8.

One more thing, say he buys this one for $200 with the green FBAS input and does not use said input, will that cause a problem ?
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Old 02-08-2014, 09:41 AM   #16
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Are other units swapable if I can't find mine?

Looks like there are plenty 4E0 035 729'S around

But my second number, 4e0 910 731 b 119 seems a little more difficult to locate.
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Old 02-08-2014, 10:58 AM   #17
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Yes, but be sure to get the correct HW: number

as the first number is the hardware number "HW" and the second is the software number "SW".

as in HW: 4E0 035 729 no camera, HW: 4E0 035 729 A with camera
SW: 4E0 910 730 G 2005 A8, SW: 4E0 910 731 B 2006 A8

As to what Misha just stated, I say stay with a "4E0" software version, as 4E0 is for A8, 8T0 is for A4-A5, 4L0 is for Q7, and so on, as I stated below it worked for me on other modules, but the MMI CH is the brain....

I have in my 05 A8L W12 replaced the mmi ch with a newer one including the FBAS green input, I also retrofitted a RVC setup from a Q7 into my A8L, and I installed a TV tuner from a newer A8 from Europe, and also a can-bus from a Q7, all these unit have no idea they are sitting in an A8.

Last edited by JohnnyJ A6Q; 02-08-2014 at 11:19 AM. Reason: correct info
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Old 02-08-2014, 11:00 AM   #18
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Quote:
Originally Posted by JohnnyJ A6Q View Post
Misha,

Did we ever conclude that because HW numbers were the same and that the units would be flashed to say A8 MMI version 4610 that it then changed the software in said MMI CH, I for the life of me today cannot remember, I know I used Q7 and or 8TO parts for my RVC retrofit and all works just as it was in an A8.

One more thing, say he buys this one for $200 with the green FBAS input and does not use said input, will that cause a problem ?
No. A5/S5 unit flashed with the newest software still stays A4/S5 unit and doesn't work properly with A8. I believe that EEPROM containing that initial information has to be flashed first, but I haven't tried that yet (I will). I also believe that Polish company is doing exactly that (including CP removal) but I newer tried it.

F-bas presence is not problem if there is no connection to it. I had it installed before the rest of camera retrofit and it worked just fine.
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Old 02-08-2014, 11:12 AM   #19
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So this below won't work, what exactly did not function properly on the A8 with a Software version "8T0" MMI CH ?


http://www.ebay.co.uk/itm/audi-a4-b8...item2a36efbea5
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Old 02-08-2014, 11:34 AM   #20
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All menus are different and dimmed. It doesn't support MMI screen retraction, but that is not crucial.

P.S. I think that one won't work with A8.

Last edited by mishar; 02-08-2014 at 11:42 AM.
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Old 02-08-2014, 11:34 AM
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