Preliminary Work

→ Ventilate the work area well.

→ Never ingest or inhale.

→ Read specific information on the Hazard Sheet.

→ Do not smoke, eat or drink in the work area.

→ Avoid contact with hot parts or sources of ignition.

→ Use suction to remove ignitable vapours.

→ Attach warning sign in a clearly visible position.

Information 

• If the fuel pump is defective, the tank must be drained using the highest point. 
• The tank cannot be drained reliably using the tank filler neck due to the "Spit Back" flap at the lower end of the tank filler pipe and the shape of the tank filler pipe. 
• The highest point (highest flange that is always above the fuel surface) is the flange under the luggage compartment cover. 
• If the tank flanges under the rear seats are opened, there is a danger of flooding the interior of the vehicle with fuel. 
• If fully functional, the tank can be drained via the low-pressure transfer point above the engine torque support using an auxiliary line into a suitable container (100 liters) and the workshop tester. The Drain tank function can be selected using the Tester. 

1. Remove luggage compartment cover. → REMOVING CENTRE TRIM PANEL FOR LUGGAGE COMPARTMENT (LUGGAGE COMPARTMENT COVER)
2. Pull off lid under the luggage compartment cover -1-  . To do this, cut through the side connections on the sound insulation.
   Fig 1: Fitting Bodyshell Cover

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Disconnect both connections on the tank vent flange -1-  . To do this, press the push-on connectors from below using assembly tool T10118  as required.
   Fig 2: Identifying Tank Ventilation Connections

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   Fig 3: Identifying Assembly Tool (T10118)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Press connecting lines aside and open the flange ring using a wrench T10202  . Remove flange ring.
   Fig 4: Loosening Flange Ring

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Carefully lift up tank ventilation flange, disconnect hose line -1 and 2-  and remove the flange → Tank ventilation flange  . When doing so, make sure not to damage the fuel-level sensor -3-  .
   Fig 5: Identifying Tank Ventilation Flange

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Place the tank ventilation flange above the bodyshell opening → Positioned flange  . The cable and fuel-level sensor remain fitted.
   Fig 6: Positioning Tank Ventilation Flange

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.