Removing Secondary Air Valve

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect secondary-air hoses and pipe.

Fig 1: Identifying Secondary-Air Hoses And Related Components
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Secondary-Air Pipe
2. Holder With Clamp
3. Clamp
Detach secondary air valve connections.
Remove screw -2- and carefully pull the secondary air valve -1 or 3- out of the cylinder head.

Fig 2: Identifying Secondary Air Valves Installation Position
Courtesy of PORSCHE CARS NORTH AMERICA, INC.