Loosening Main Wire Harness Under Dashboard

→ The main wire harness contains all airbag lines, antenna lines and optical waveguides.

→ The main wire harness must not be separated and is always replaced as a complete wire harness when carrying out extensive repairs.

→ If individual lines are damaged, shut off these lines and install new lines. Lay the new lines along the main wire harness and secure them to the main wire harness.

Fig 1: Identifying Main Wire Harness Under Switch Panel Position

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Loosen wire harness for engine compartment on the right.
   1. 1.1. Loosen rubber sleeve -1-  for engine compartment wiring harness on the right.
   2. 1.2. Make sure that all electric plug connections on the wire harness in the engine compartment on the right are released and unplugged. → Loosening Main Wire Harness In Engine Compartment 
   3. 1.3. Make sure that all brackets are unclipped and released.
   4. 1.4. Pull wire harness from the engine compartment on the right through the bulkhead.
   Fig 2: Loosening Wire Harness To Engine Compartment On Right

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Release and unplug electric plug connection for loudspeaker amplifier. → REMOVING LOUDSPEAKER AMPLIFIER
3. Remove electric plug connection for door electrics.
   1. 3.1. Open front door of the vehicle and detach rubber protection on wiring arrangement for door electrics from the A-pillar.
   2. 3.2. Release mounting housing -1-  (-arrow A-  ) and remove it from the A-pillar.
   3. 3.3. Release electric plug connection for door electrics -arrow B-  and disconnect it -arrow C-  .
   4. 3.4. Remove supply line for door electrics from the A-pillar.
   Fig 3: Removing Door Electrics Connector
   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Loosen fuse box on passenger's side and remove it from the bracket.→ Loosening Fuse Box 
5. Release and disconnect electric plug connection for air vent lighting at the A-pillar.
6. Release and disconnect electric plug connection for the passenger's knee airbag. → REMOVING KNEE AIRBAG ON PASSENGER'S SIDE
7. Loosen wire harness for engine compartment in the center to the plenum panel.
   1. 7.1. Make sure that all electric plug connections on the wire harness in the engine compartment in the center to the plenum panel are released and unplugged. → Loosening Main Wire Harness In Engine Compartment 
   2. 7.2. Make sure that all brackets are unclipped and released.
   3. 7.3. Pull wiring harness (protected by a rubber boot) -1-  from the center of the engine compartment near the plenum panel through the bulkhead -arrow-  .
      Fig 4: Loosening Wire Harness To Engine Compartment In Centre

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
8. Loosen cable duct and main wire harness under the dashboard from the dashboard support.
9. Loosen fastening nut for ground point from the dashboard support and remove supply line. → REMOVING DASHBOARD SUPPORT
10. Disconnect wire harness from the center console.
    1. 10.1. Release and unplug electric plug connection for rear seat backrest on the left and right -1-  .
    2. 10.2. Release and unplug electric plug connection for rear seat on the left and right -2-  .
    3. 10.3. Release and unplug electric plug connection for the rear air-conditioning system control -3-  .
    4. 10.4. Release and unplug electric plug connection for the rear center console wire harness -4-  .
    5. 10.5. Release and unplug electric plug connection for the airbag control unit -5-  .
    6. 10.6. Release and unplug electric plug connection for the switch console in the front center console -6-  .
    7. 10.7. Loosen fastening nut for ground point -7-  and remove supply line.
    8. 10.8. Unclip all electric supply lines.
    Fig 5: Identifying Centre Console Wiring Harness

    Courtesy of PORSCHE CARS NORTH AMERICA, INC.
11. Remove electric plug connection for door electrics.
    1. 11.1. Open front door of the vehicle and detach rubber protection on wiring arrangement for door electrics from the A-pillar.
    2. 11.2. Release mounting housing -1-  (-arrow A-  ) and remove it from the A-pillar.
    3. 11.3. Release electric plug connection for door electrics -arrow B-  and disconnect it -arrow C-  .
    4. 11.4. Remove supply line for door electrics from the A-pillar.
    Fig 6: Removing Door Electrics Connector
    Courtesy of PORSCHE CARS NORTH AMERICA, INC.
12. Loosen fuse box on driver's side and remove it from the bracket.→ Loosening Fuse Box 
13. Release and unplug electric plug connection for air vent lighting at the A-pillar.
14. Release and unplug electric plug connection for the driver's knee airbag. → REMOVING DRIVER'S KNEE AIRBAG UNIT
15. Unclip supply line for antenna at the A-pillar and windscreen frame. → REMOVING MOBILE COMMUNICATION ANTENNA
16. Loosen wire harness for engine compartment on the left.
    1. 16.1. Loosen rubber sleeve -1-  for wiring harness in engine compartment on the left.
    2. 16.2. Make sure that all electric plug connections on the wire harness in the engine compartment on the left are released and unplugged. → Loosening Main Wire Harness In Engine Compartment 
    3. 16.3. Make sure that all brackets are unclipped and released.
    4. 16.4. Pull wire harness from the engine compartment on the left through the bulkhead.
    Fig 7: Loosening Wire Harness To Engine Compartment On Left
    Courtesy of PORSCHE CARS NORTH AMERICA, INC.