NINETOM Wireless CarPlay Retrofit Kit Decoder for Audi S4 S5 A4 A5 (2009-2015 Year) for Q5 (2009-2017 Year) with 2GMMI, Support Android Auto, Mirror Link, Reverse Camera, Original Car Function

Overall for the price I’m very satisfied. The interface seems to work well and I’ve been using it for over a month. My only complaint is the instructions were not clear/incorrect in relation to the ribbon cable not needing to be connected prior to testing. The ribbon cable that connects to the buttons does need to be connected prior to the testing stage otherwise the unit will not switch on. Overall very satisfied and I think the price is fair.

Installed this in my 2014 Audi A4 B8.5 with 2G MMI. The most difficult part of the install is removing the vent and radio. Make sure you buy trim removal tools and the Audi keys to remove the unit in the glove box. Directions on YouTube don’t have English and are very hard to follow.The unit stopped working after two days. Car play would randomly disconnect and the screen would turn black and go back to the OEM screen. When holding the "NAV" button the module would click and the screen would just flicker and go black. I triple checked everything and nothing is installed incorrectly.The controls never worked for the center control knob and I could only get the steering wheel to control everything.

It's not trivial for me to install so I don't bother to uninstall and return. The radar image on the left side of the screen is blocking rear camera view and it CANNOT be turned off. I tried the 'Reverse display radar' switch multiple times with different combinations of switches and it just won't turn off.

Love the fact I didn't have to replace my entire system. Works well. Only downside it's not touch screen.