My Superb came with an after market Android headunit as the original Columbus had failed and was replaced by the dealer I bought it from.

The replacement headunit comes with bluetooth phone integration, but the car still has the original VAG bluetooth system installed under the drivers seat. 

What I'm confused about is whether the internal original fit microphone is still active.  Is it connected directly to the quadlock connector that plugs into the headunit?  Is it connected to the VAG bluetooth unit under the seat?  Is there a microphone connection between the under seat VAG bluetooth unit and the head unit quadlock?

If I knew where the internal microphone connection in the overhead light module went I could connect it directly to the current android headunit, but at present I have no idea if it is being used or not and what it is at present connected to.  The Android headunit has a built-in mike and an input for an external mike.  It does connect to my phone and I do receive phone calls through it though it is probably using the headunit's own internal mike.

As far as I'm aware the VCDS programming hasn't been changed at all, so the car knows the VAG bluetooth is present and is giving errors as it is failing to find the Columbus.

Anybody understand how this works and if I can get the Skoda mike working with the new headunit?

Edited 19 August, 20205 yr by achapman

The microphone may connect to the Bluetooth module under the seat, or it may go into the quadlock in the cars loom behind the head unit. If it's in the quadlock then it now may not be connected to the new unit if an adapter loom has been used. Or it may be connected and ignored. Or it may have been disconnected and be hanging loose by the rough arsed dealer fitter who clearly did a half baked job by not disabling the factory Bluetooth. What you currently have is unknown.

 

Can it be used by your current head unit? Your question would be best pointed towards the unit manufacturers as they know how their unit works whereas we don't even know what unit you have.

 

 

1 hour ago, Rustynuts said:

The microphone may connect to the Bluetooth module under the seat, or it may go into the quadlock in the cars loom behind the head unit. If it's in the quadlock then it now may not be connected to the new unit if an adapter loom has been used. Or it may be connected and ignored. Or it may have been disconnected and be hanging loose by the rough arsed dealer fitter who clearly did a half baked job by not disabling the factory Bluetooth. What you currently have is unknown.

There are no unused wires behind the headunit and there is an adaptor loom, so if the original mike is wired into the quadlock then the headunit can use it or, as you say, the headunit might ignore it.

I asked about the bluetooth under the seat as I believe that the mike may be wired directly to that instead.  I haven't been able to locate a wiring diagram to find out though. There was one on a VAG Golf site, but the image is now unavailable. 

If the mike is wired to the bluetooth unit though, disabling the factory bluetooth will likely mean that it won't then be available to any headunit that is fitted, whether it be a Columbus or after market unit.

So I still need to know whether the standard factory install wires the mike to the quadlock or the bluetooth unit. 

Depending on specification, it could be wired either way. I can't see from here...😋

just disconnect the under seat module if the HU is working ok?

i did that with mine and have no issues with errors plus the car now no longer searches for phones when ignition is on

 

 

1 hour ago, olduns said:

just disconnect the under seat module if the HU is working ok?

i did that with mine and have no issues with errors plus the car now no longer searches for phones when ignition is on

 

 

Yes, same here. I just pulled the plug on the Bluetooth module without any issues. I'm sure there are errors showing up in VCDS though, I haven't checked recently

Thanks everyone.  I found another thread on here 

It appears there are two wiring looms. If you have voice control the mike goes to the Columbus then out the Columbus to BT (as langers2k says), but if you don't the mike is wired direct to BT.  Given the age of my car I'd guess I've got the latter.

If anyone is interested, previous threads referred to a my-gti thread which is no longer available.  It can be accessed here though https://web.archive.org/web/20191110094349/http://www.my-gti.com/1234/volkswagen-rns-510-microphone-connection-for-voice-control