Audi Forum banner

radio mute wire?

1 reading
13K views 23 replies 6 participants last post by  todd1010  
#1 ·
I have a 2009 S5 with 2G MMI and B&O sound system. Can someone tell me where I can find a place to connect a radio mute wire to mute the factory radio?
 
#3 ·
No, this is not what I'm looking for. I need to find the wire that mutes the entire sound system. Just like when your listening to the radio/cd, etc. and the telephone rings and mutes the entire system so you can use the telephone and talk.

I think it's actually the telephone mute wire that I need to tap into so I can add a laser jammer for voice prompts.
 
#4 ·
Just so we are on the same page, where is the mute wire coming from? BT module? If so what wiring have you done so far as there are different way to wire this up.

Have you turn the "Soft Mute" on? You shouldn't need it if you have pin 14 (ring break diagnose) connected and spliced into another unit's ring break wire.

BB
 
#5 ·
Just so we are on the same page, where is the mute wire coming from? BT module? If so what wiring have you done so far as there are different way to wire this up.

Have you turn the "Soft Mute" on? You shouldn't need it if you have pin 14 (ring break diagnose) connected and spliced into another unit's ring break wire.

BB
The mute wire is coming from the Laser Interceptor module. This wire is what I need to connect to something in the car to mute the radio. What it does it when it receives a laser alert [if you have the mute wire connected] it should mute the radio/source.
 
#6 ·
The ring break diagnosis wire has nothing to do with muting. It is purely there to detect faults in the MMI loop.

Just so we are on the same page, where is the mute wire coming from? BT module? If so what wiring have you done so far as there are different way to wire this up.

Have you turn the "Soft Mute" on? You shouldn't need it if you have pin 14 (ring break diagnose) connected and spliced into another unit's ring break wire.

BB
 
#7 ·
muting wire again

Hi guys,

I have exactly the same problem: I installed the LI laser jammer and I must connect its mute wire (open collector) to MMI to shut up all audio when the jammer sends the warning.

I did the same in my old A4 B7 with RNS-E and worked fine.

Now I have a new A4 B8 with MMI 3G with DVD (no hard disk) but I can't find the pinout of this unit.

Can anybody have a pic of MMI 3G with DVD pinout OR the number of mute wire in the socket?

Thank you for your help.

R
 
#9 ·
Hi there,

I have exactly the same request.

My Audi A4 Avant (2009) has a MMI 3G unit with DVD (no HD, two SD slots) and I'm looking for "mute" pin location on the MMI socket.

Has anybody this info? Thank you.

R
I haven't but I'd love to know.
 
#11 ·
Now I have it!

The mute pin is the n. 1 of the quad socket.

I connected it to laser interceptor and I get MMI mute when LI detects the treat.

R


Holy cow! Please give me more information on what you did. I'm familiar with Audi's other wiring but not my S5.

Photos?

How you connected it?

Any nuances with the way it works?
 
#12 ·
In your earlier post you mentioned the car you have so it would be important to know exactly what this wire is since it seems you car is different than mine but we would possibly have the same wire somewhere.
 
#13 ·
The mute pin is the n. 1 of the quad socket.
Doesn't the Quadlock have 4 sections? - A, B, C, & D?

Which pin 1 are you referring to?
 
#14 ·
Holy cow! Please give me more information on what you did. I'm familiar with Audi's other wiring but not my S5.

Photos?

How you connected it?

Any nuances with the way it works?
Sorry, no photos! but I read this thread in LI forum:
My 09 Audi S5 Install
It's about installation on S5, but I found it useful for my A4 also. It's almost the same!.

My unit is MMI 3G with DVD (no HD) and mute wire must be connected to contact 1 of connector A. The place A-1 of the quad connector is empty, so you have to find a pin that fits inside the connector hole and solder the mute wire coming from LI socket (pin n.3) to the pin. I think that some people here can suggest you where to find the pin for that connector.

That's all, it's not so difficult but if you are not experienced in this stuff it's better that you search some help from specialists.
 
#16 ·
It is also important to note that there are 2 quadlocks, 1 for the radio and one for the mulitmedia unit.

But I think they are talking about the quadlock of the multimedia unit, this was taken from ELsawin.....

1 - NF mute (low frequency) from pre-fitted components for mobile phone installation



Maybe this will help for Todd

Pin 20 of the MMI controller has a mute pin....

20 - NF mute (low frequency) from pre-fitted components for mobile phone installation (Japan-Nav/China-Nav)
 
#17 ·
I'm the one posted last in both of those forums asking questions but he never said anything about muting his radio with the Laser Interceptor mute wire.

But that's great someone found it. Now I just need to find a wiring pin to connect to the laser interceptor mute wire to make it all nice and clean.
 
#18 ·
It is also important to note that there are 2 quadlocks, 1 for the radio and one for the mulitmedia unit.

But I think they are talking about the quadlock of the multimedia unit, this was taken from ELsawin.....

1 - NF mute (low frequency) from pre-fitted components for mobile phone installation



Maybe this will help for Todd

Pin 20 of the MMI controller has a mute pin....

20 - NF mute (low frequency) from pre-fitted components for mobile phone installation (Japan-Nav/China-Nav)



I haven't had a lot of time to give this a try, and to tell you the truth I haven't had a lot of time to really figure out where this pin and quad lock is on this car.

Can you point this out to me?

Thank in advance for any help!
 
#19 ·
Can anyone clear this up for me? I'm not sure exactly what wire and where this quad lock is located.

Thanks in advance!
 
#20 ·
Well as you have 2G you don't have a quadlock for start.

You have 2G MMI, so no quad locks, however you do have a 20 pin connector on the MMI controller as I stated. This is behind the glovebox.
 
#21 ·
Well as you have 2G you don't have a quadlock for start.

You have 2G MMI, so no quad locks, however you do have a 20 pin connector on the MMI controller as I stated. This is behind the glovebox.

The odd thing is that the forum user "Glider" never mentioned that he took out the glove box or even anything related to access the wiring pin to connect the "mute wire".

I know Audi sells these "pins" to connect to the end of wires to use on these 20pin connectors. I'd like to have everything together while I'm there, so do you know what pin works with this connectors so I can buy it from Audi ahead of time.

I'll give this a try here soon. THANKS!
 
#22 ·
Yes but Glider states quite clearly that he has a 3G car, read his post again.

You have 2G, they are different.
 
#23 ·
Understood, I guess I was just happy that someone found a way and assumed when he said they were basically the same that I could find the connector in the same or similar spot.
 
#24 ·
It is also important to note that there are 2 quadlocks, 1 for the radio and one for the mulitmedia unit.

But I think they are talking about the quadlock of the multimedia unit, this was taken from ELsawin.....

1 - NF mute (low frequency) from pre-fitted components for mobile phone installation

Maybe this will help for Todd

Pin 20 of the MMI controller has a mute pin....

20 - NF mute (low frequency) from pre-fitted components for mobile phone installation (Japan-Nav/China-Nav)
Craig, look in section (3) of this PDF of the 20-pin connector. I guess this is what I'm looking for, correct? It's on a different car but it was the only photo I could find.

So your saying pin #20 is the mute pin out wire I'm looking for, correct? But based upon what you said here, pin #20 for China/Japan-Nav........so is this the same for the USA?

Here's a link to the PDF:

http://www.eglober.com/UploadFiles/201031814929608.pdf