If your Mercedes or BMW AUDI Android screen have accidentally uninstalled the ZLINK APP and will not be able to use the Carplay and Android Auto features, need to go inside the APKlnstaller to install them.

Routes：APPS-APKlnstaller

Select "CarplayZlink.apk" under the "OEM" menu bar, then click "install", after finishing, you can see ZLINK in APPS.