Preliminary Work

Remove additional brake light.
> 947019 REMOVING AND INSTALLING ADDITIONAL BRAKE LIGHT
Remove (upper part of) C-pillar trim panel.
> 706819 REMOVING AND INSTALLING C-PILLAR TRIM PANEL (UPPER PART)
Disconnect plug connections at the rear window.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Plug connections
1. 3.1 Disconnect plug connection for heated rear window -1- .
2. 3.2 Release and disconnect plug connection for antennas -2- .
3. 3.3 Release and disconnect plug connection for brake light -3- .