thanks for the description. I did get in the end the role of Key User... the issue is that the MMI on the Q4 I picked up last week... does not have the User icon to link it to the app. I do have codes and everyone is telling the same process.. but without the user icon on the MMI... I basically cannot input it anywhere. It is a super pain..."Key User" is a security feature to ensure that someone else cannot hack your car (think of James Bond movies). First your dealer verifies and registers you as the owner of the vehicle with Audi. Only once that is done can you link your car, using the Key User code, to enable you to use the remote features available in the MyAudi app. You link your car by inputting the Key User Code through your car's MMI. Hopefully, your have your code. Inputting it is done in the USER section of the MMI where you also signed in with your MyAudi account. Getting your car to accept your Key User code can be a stressful time, just because dealing with the flakey MyAudi app and Audi Cloud is a royal pain!