RNS310 to RNS315 guide.

[Rob_Talisman]

Ok swapped mine over few weeks ago. Got a bit of a guide with pics.

First remove the RNS310. The facia surrounding the radio pops out fairly easy. I used a credit card to slide under and pop out then ease the rest out. Remove the 4 torque screws and it slides out easy. The white connector for the aerial has a little slide out locking pieces. Pop it out then tug the connector off. The blue gps connector has a little lever piece. Push it in and tug it off. The main cable connector again has a lever. Pull it outwards from the bottom and it then swings out and the connector unplugs easily.

To make life easy i also removed the climate control section. Two screws bottom left of it and again easy out the surround and it all pops off. Remove the 3 cable connectors.

The RNS315 has DAB so needed to install a DAB aerial.
I mounted the aerial top left of the window then ran the cable back to the radio. To do this i had to remove the pilar A section of trim.

The trim under the passenger side foot well. Under glove box.

And pulled the trim off the side of the center console.

.

Not sure that was needed actually.
And brought the cable out into the radio area.

I needed a switched live and earth for the DAB aerial. This surprisingly you cant get off the radio wiring. In fact i took this feed from the lights. Sorry no pics. But basically pulled the light switch cable connector out and tested for a switched live via a multimeter. Cut the cable and added cable connectors. Soldered them and job done.





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[Rob_Talisman]

The next job was to sort the bluetooth out for the radio to be able to stream music from my phone and also have it work with the in built mic in the car.
Ive copied a fee photos from another user for this as he helped me. Hope this is ok.
If you compare the two radio wiring connections you can see they are different.

Rns310

Rns315

The diff is the mic connections we want which are on the green block connector.

On the Green block pinout (found at the HU quadlock connector):

1 – Microphone input, negative

2 – AUX output, audio, right

3 – AUX output, common signal earth

4 – Microphone output, negative

5 – Telephone audio input signal left, negative

6 – Telephone audio input signal right, negative

7 – Microphone input, positive

8 – AUX output, audio, left

9 – Microphone output, positive

10 – Telephone mute (mute switch for radio)

11 – Telephone audio input signal left, positive

12 – Telephone audio input signal right, positive

We need to connect the mic to connecter 1 and 7

These currently do not exist in the connector itself.

And the easiest place to connect to the existing mic is via the bluetooth module under the drivers seat. So i ran two cables. Pushed them to the right of the radio hole. Under the steering wheel footwell cover. Across the panel that covers the fuse box

Down the trim going down to the floor.*

Under the floor/door trim

Then under the carpet under the drivers seat

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[J400uk]

Very useful - thanks for sharing

 

[Rob_Talisman]

Then to connect them up.

This is the plan.

So i needed two extra connection. I got an old radio connector.

And pulled two of the pins out.

These i would use in the green connector for pins 1 and 7. So pulled the connectors out of the connector block.

Got the green connector.

And pushed these two wires into the correct empt holes. I then superglued the end of the connector to hold them in place.

I then crimmed on connectors to the wires and soldered them to.

Did this for these two cables and the two cables i ran under the seat and connected up.

Then under the seat i had to push the seat back as far as it would go. Then unplug the bluetooth cable connector.

You had to slide the blue connector out of its housing. I the cut connections 11 & 12 and again soldered on connections and joined up the two cables i had run to the radio pins 1 & 7 and joined them up to 11 & 12.
You then need to leave the bluetooth module unplugged btw.

With this done everything could be clipped back together. Best to test first though which i did.

You may need to alter some settings within VAG-COM via the connector under driver side light switches. I disabled the bluetooth and enabled the bluetooth on the radio via this.

That done it all works a treat.


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[Mattd938]

Aaaaahhhh I was going to swap my unit over this weekend, didn't realise it was this complicated I thought it would be just swap the cables over. Also didn't know I needed vcds so that's me knackered then as I haven't got it.

Bummer

 

[Mattd938]

Been looking on ebay and there are a few different rns315 adapter harnesses consisting of the green plug with a microphone going all the way to the whole plug with the Bluetooth plug at the other.

Will one of these adaptors do the work of all the extra wiring bits that you did?

You mention not plugging the Bluetooth plug back in when you have changed the wiring so does that mean I only need the green plug to have the two wires for the microphone?

Hope someone can shed some light on this that has done the conversion

 

[Rob_Talisman]

I connected the mic up to the rns315 and disconnected the original bluetooth unit. Didnt need vcds to get it working though.


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[Mattd938]

Thanks Rob, did everything else work straight from the off too a la the parking sensors screen etc?

 

[Rob_Talisman]

Yeah no issues mate. Mine is a dab 315 so did have to fit a separate aerial


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[Mattd938]

Yeah the one I bought off eBay is a 2014 315 dab. Going to be going in a 59 reg FL fr