Ever since I bought the Z4 M Coupe, the navigation/media screen hasn't worked properly. The anti-glare covering was wrinkled, the display was dim and only worked occasionally, so I finally decided to send it off to the guys at Hi-Tech Electronics (https://hitechserv.com) to get it refurbished.

The unit came back looking great, but still didn't work properly. A common problem with these screens going blank is a fault in the nav system, so out that came and that's where the fun began . . .

Contents:
0:00 The problem at hand
1:55 Removing the screen
6:06 Secret access panel
7:33 The repaired screen reinstalled
10:15 Removing the nav unit
11:58 "Special" tool needed to remove nav unit
12:20 Everything working perfectly!
13:00 Recap of nav unit removal procedure
15:15 Testing the screen and nav system

Well there you have it. The nav system is so antiquated that I will probably never use it (not without a map update anyway), but it's nice to have the screen finally working properly.

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