Preliminary Work

Remove cover over the brake master cylinder (front luggage compartment cover) → REMOVING FRONT LUGGAGE COMPARTMENT COVER .
There are two types of luggage compartment covers -1- (illustrations below).

Fig 1: Removing Luggage Compartment Cover (1 Of 2)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 2: Removing Luggage Compartment Cover (2 Of 2)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.