Removing Main Wiring Harness - Engine Compartment In Centre

Remove wiper motor → Removing Wiper Motor .

Remove left and rear engine compartment covers → Removing front trim (engine compartment) .

Remove plenum panel at front left.

1. Unscrew fastening nut -1-  (firewall centre) and remove ground strap together with twist lock -a- -Arrow A-  .
   Fig 1: Removing Ground Strap Together With Twist Lock

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Open clip -Arrow B-  and remove line -Arrow C-  .
3. Release connector on brake booster using a suitable aid (e. g. an angled piece of wire) -a- -Arrow A-  and pull it off -Arrow B-  .
   Fig 2: Removing Connector On Brake Booster

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Release connector on distance sensor (brake assist system) using a suitable aid (e. g. an angled piece of wire) -a- -Arrow A-  and pull it off -Arrow B-  .
   Fig 3: Removing Connector On Distance Sensor (Brake Assist System)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Release connector on distance sensor (brake assist system) using a suitable aid (e. g. an angled piece of wire) -a- -Arrow A-  and pull it off -Arrow B-  .
   Fig 4: Removing Connector On Distance Sensor (Brake Assist System)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Release connector on brake fluid reservoir -Arrow A-  and pull it off -Arrow B-  .
   Fig 5: Removing Connector On Brake Fluid Reservoir

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Open clips -Arrows A-  and remove line -Arrow B-  .
   Fig 6: Removing Line

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
8. Open clip (brake assist system) -Arrows C-  and remove line -Arrow D-  .
9. Open clip (firewall) -Arrow A-  and remove line -Arrow B-  .
   Fig 7: Removing Line

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
10. Press out the rubber sleeve (firewall) to the inside -Arrows C-  .

    Remove main wire harness - dashboard area and centre console → Removing Main Wiring Harness  .