I recently installed this kit in my 2017 Audi A3 e-tron.
Since this thread hasn't been updated in more than a year and half, here are my observations so far:
The listed kit is no longer available on Amazon, but the same box with the same cables and the same everything is sold by multiple companies under multiple brand names.
I googled "add carplay to audi a3" and got a bunch, including a bunch of different sellers on Amazon.
There are also a large number of videos to help with the installation. I watched this one, especially:
https://www.youtube.com/watch?v=1Eep4QN3WPw
(I didn't buy from that company, but, again, all the boxes are the same).
The installation was straightfoward. Here are my notes and issues:
INSTALLATION
- You NEED to buy Audi Radio Remover Tools to remove the head unit/CD player in the glove box. Get them before you start. They don't come in the box. Just google "audi radio remover tools." they're inexpensive ($4-5).
- There are 8 screws to remove (in the A3). Watch the videos to see where they are. One is *behind* the existing head unit.
- Unplugging the radio and putting the new unit in line is straightforward, but it helps to (a) watch the videos, and (b) take photos of the back of the radio before you unplug it.
- Ensure that the unit works before replacing everything.
- I had issues with the DIP switches - the diagram shown did not work for my car. But I think I figured out what did, and proceeded. There are four options listed, mine was not one of them (my radio is MIB2, or “Delphi”). The recommended settings caused the screen to split into four sub-parts. I tried a number of different switch combinations, and one worked, but I forgot to write down the combo. The instructions I had said "contact us if the DIP switches don't work for you" but had no contact information.

- You need to set it up initially (at least) via USB, so be sure to make the USB cord available.
- All the videos show the removal of the glove box. None show getting it back on. Getting the glove box back on and aligned is a pain, and having two people helps. It took me the longest time of any of the steps. But when I figured it out, it all came together.
WORKING (3 days in)
- I'm still not sure what the unit takes over and what it doesn't bluetooth wise, especially looking at the difference between wired and wireless connection.
- Using it causes the "AUX" input to show in the driverinformation system area, so you don't get the name of the track or podcast there as you do in the native system.
- I can't get the unit set so that the (native) backup camera overrides the Carplay unit. So, to get to the backup camera, you need to get out of the Carplay system back to the native system (which it still overrides), and when you're done using the camera you need to go back into the Carplay system. Honestly, this may stop me from using the Carplay system on a day to day basis and only use it for navigation, if I can't get it worked out. The backup camera coming on automatically is more important.
- Both wired and wireless work well, although I think wired may work a little better.
FIRST OPINIONS
It's fun and all the controls carry over from the native system. It's inexpensive-ish ($250 plus the radio removal keys (like $5), and I had all the tools needed), just enough of a DIY to be challenging to me and not too frustrating, and is great for maps. But if I can't get the unit to automatically switch over to the backup camera when I put the car in reverse I think I will end up using it only for maps, and continue to use my phone and bluetooth with the native system.
That's it for now. If anything else comes up, I'll write more.
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