
Originally Posted by
alnoor15
A4Landon I am gonna address this problem I have with the kit since I know you were one of the first ones to install it.
Few days ago my carplay and back up camera are not working. Friday is was working perfectly fine, and the next day it just doesn't show up. When changing into reverse, the backup camera does not show in the screen.
Regarding carplay, on the dashboard it shows that an external audio device is connected, it shows my phone is connected, and on the MMI screen it shows "External Audio Source Active". However, the carplay does not come in at all. i was thinking it may be a wire issue or something but what can cause this change?
Does the Carplay user interface even appear on your screen at all? Even when wired in?
The troubleshooting steps I would probably follow would be:
1. Test the carplay audio. I would do this wired-in. So plug in the phone to the usb-lightning cable, listen for the carplay relay to 'click' signifying it tried to start sending signal to the MMI display. If your dash shows that an external device is connected and you're on the MEDIA setting for the MMI (as opposed to FM/AM or some other source), you should be able to hear the audio even if your display isn't changing. Using your phone, play some music. If you can hear the audio through your car stereo, but cannot see anything on the screen, it sounds like the connection between the carplay box and the display has been interrupted. This would also explain why the back-up camera isn't displaying on the screen, either. So I'd check that wiring connection from the MMI display to the carplay box.
2. If the carplay audio is NOT coming through the stereo, and the MMI display isn't changing or showing your back-up camera, then it sounds like a carplay box issue. I have a hard time believing it would be a wiring issue because everything is plug and play (minus the ground wire on the back-up camera). If it were me, I would first unplug and re-plug all of the harnesses on the carplay box, then test. If it's still not responding, I would try to get the computer box replaced under warranty.
What you're describing sounds like the box isn't responding at all (either to engage carplay or to accept back-up camera). The kit carries a one year warranty and I know you've only had it for about ~6 months. Best case scenario is you just had a wiring harness that wasn't clicked into place, middle case is you have the box replaced under warranty, worst case is UAD doesn't warranty the box and you're stuck (highly unlikely based on my experiences and the ones I've read from others here on the forum).
Hopefully you don't need a full re-install, just a box swap. Good luck!
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