There is a FB group for the Nifty City/AuCar Tesla screen that could probably help you out. While I am NOT a fan of FB groups when it comes to cars and what not - this one seems to try to 'sort out' issues quickly (since most of the people on the group have had a lot of the same issues and stuff). For everything else related to my Z - love this forum haha.
I found this:
LINK:
https://www.facebook.com/groups/5564...issing%20noise
GROUP:
https://www.facebook.com/groups/5564058663658208