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Discussion Starter #1
Just to summarize what has been posted somewhere else here, this is the conversion table from the OnStar Telematics interface to the BT Phone interface.
If anybody finds any error, please let me know.

 

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This is the chart i used.. seems to work (but I still need to VAG the car... so i will let everyone know as soon as i get everything working.
 

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That is the right one, and it worked great.

Fairly easy to push teh pins out. You may need to cut some of the tape back, to help pull the pins.

Some tips, once you make the connection:

>Have the cell phone on, and check that it can see the BT mod. The default BT mod code is 1234.

>VAG the BT Mod. Turn off as much background programs as you can, as this module is a bit tricky to talk to. Try it first with while the phone is paried with the system, and again after the unit dumps the paring.

I would do both above, BEFORE putting the seat and everything back, as if you can't get things working, you can check your connections.

This was a straight forward swap with the Onstar system.
 

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This may be a silly question, but before I tear into stuff..

Noticing that OnStar has pins 18,19 both GND-Terminal 31 and 39,40 are Battery (+). In looking at the chart, those pins correspond to pins 1 and 2 respectively for the BT module. Do I need to just use pins 18 and 39 or do I have to find a way to splice them into the same pin (18,19 into pin1)? Also in comparing this chart to a list posted by PROXUS back in Sept 05, the Mic (+) and (-) are reversed for pins 11 and 12 on that post. I am guessing this is the more up-to-date chart.
 

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Discussion Starter #5
In the A4 B6, the power wires were 0.5qmm, in the A6 C5 they were 0.35qmm. I did wire up my BT interface using only one pair of power wires but the original wiring plans show 0.5qmm for the BT interface so you might be better of using both wires if you are upgrading an A6.

And yes, in Proxus list the mic +/- wires were swapped.
 

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The A6 does actually use 0.5mm wires as well, the wiring diagram was a typo at 0.35. Therefore, just pick one wire each for power and ground to use for the BT module in any vehicle.
 

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Discussion Starter #7
NSX JR said:
The A6 does actually use 0.5mm wires as well, the wiring diagram was a typo at 0.35. Therefore, just pick one wire each for power and ground to use for the BT module in any vehicle.
Good to know, makes it easier for you A6 guys...
 

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telematics>BT retofit

I wounder if the BT module has a pin on it to accept the telematics button signal or another outside button, without relying on the mfs button. This external button could then operate the phone like mfs button without the high cost of a steering wheel conversion. There are several unused pins and I would not be suprised that in some country somewhere there is an option for Cell Phone prep, without mfs option. I will investigate.
 

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Discussion Starter #10
You can get the phone prep without mfsw but you have to have the Audi phone cradle with the call/emergency buttons. However, Bjarne added tha voice activation button to his CANgate and this should allow to emulate the mfsw button and use voice control. I haven't had the time to test it out but it sounds promising.
 

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I've seen bjarnes cangate mentioned a few times, but searching these boards for cangate doesn't really seem to pull up any real information abou it, I'm trying to find more information about it, semes like it's up and coming and very promising.....

Regards,
Adam
 

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los93sol said:
I've seen bjarnes cangate mentioned a few times, but searching these boards for cangate doesn't really seem to pull up any real information abou it, I'm trying to find more information about it, semes like it's up and coming and very promising.....

Regards,
Adam
Hi Adam,

I have never had the time to do a write-up on the capabilities and future plans for the CANGate device. When I do it, I will probably put it on NSX_JR's web site, he has offered me space there, thanks Lee.

The short version is, that it is a small device I developed to fix the clock problem, we have on the B5 and early C5 platforms. Essentially it is a small CAN gateway sitting between the cluster and the RNS-E. When it sees one of the clock messages, it translates the data field to the format understood by the RNS-E. It turned out that it was easy to put in the feature to leave the RNS-E on until the key is removed, so I put it in. This was one of the features of the EU software, that I really liked, but we don't get in the US software.

For development purposes I have a serial port used for downloading new code, and also to log CAN traffic. The latter is how I determined the clock translations needed, and also for other investigations, some of it to help out AudiA4B6US with his project.

CANGate also has the provision for a switch input, which can be programmed to send a CAN message when depressed. This is what AudiA4B6US is referring to above. This function is still very much at the beta level, with no assurance that it will work satisfactorily for BT voice control. It intiates the voice mode just fine, but I think the button should also be able to answer incoming calls, and the end calls. The last two items don't seem to work completely as I would like.

Bjarne
 

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Discussion Starter #14
derekpowell said:
does anyone have a wiring diagram for the telematics interface? i.e. which color goes into which pinout?
Anything specific you are looking for?
 

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yes -- I'm installing the BT module to replace the onstar module, and it won't pop up on VAG. NSXjr has insturcted me to double-check the CAN and K-Wire connections, so I want to make sure that I've connected the right color wire to the 54-pin harness.
 

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Discussion Starter #16
T42/9, CAN high, orange/lilac
T42/30, CAN low, orange/brown
T42/13, K wire, green/red

Make sure that you are using VAG-COM 6.xx to access #77. Older versions may fail to connect.
 

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Okay, I went out with a clear head this mornig and this is what I have so far:

Pin number wire color function
1 red/blue positive terminal
2 thick brown ground
8 blue audio out +
9 thin brown audio out
11 thin black inside microphone +
12 green inside microphone -
15 green/blue data link connector/K
16 thick grey mute
17 orange/lilac CAN high
18 orange/brown CAN low


you'll see that I don't have a green/red for the K, here it's green/blue -- I don't seem to have one in the bundle. Is this right?

Something's still off, because I can't seem to find it, even with my phone searching for devices when I turn the car on.
 

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Discussion Starter #20
If it's not connected to the MOST the the pin out could be the same.
 
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