Gps antenna on the rear cover

Had a failure of the navigator several times.
The fault was always wet in the GPS antenna on the trunk, although the last time used in silicone, the Navi has already said goodbye after the hard wet winter....so the inner covering of the boot cover was unscrewed again and the antenna was removed.
Then with a hair dryer the antenna dried and wanted to install it again just as my neighbor asked what I was building. So tell him the story with the humidity, what He meant why I didn't use Wet-Protekt spray...once sprayed, the antenna also receives signals in a water bucket.
I then sprayed the antenna with His Wet Protect Spray and installed it again without using it in silicone... and since then I have been resting in the shaft....
The Navi works

simply enter Wet Protect Gurgeln or in the case of ebenäääh