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Home >> Porsche >> 2015 >> Panamera Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> 9X - Electrical System - General -- PANAMERA (970) >> WM 9X00IN Basic Instructions And Procedure For Control Unit Programming Using The PIWIS Tester (PANAMERA S E-Hybrid, PANAMERA S Hybrid, PANAMERA Executive, PANAMERA 4S Sport Edition, PANAMERA 4 Executive) >> General Preliminary Work

General Preliminary Work

  1. Disconnect electric plug connection for the fan blower -1-  (-arrow-  ) to prevent the blower from coming on during control unit programming. Having the fan on and the associated increased current draw can cause a drop in voltage, which can result in abnormal termination of control unit programming.
    Fig 1: Disconnecting Electric Plug Connection
    G09813623Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Connect a battery charger with a current rating of at least 40 A  (e.g. battery charger HFL 65 WE 1353  ) to the jump-start terminals in the engine compartment and switch it on.
  3. Switch on the ignition using the original driver's key  . On vehicles with "Porsche Entry & Drive", do this by replacing the control panel in the ignition lock with the original driver's key if necessary.
  4. PIWIS Tester II 9818  must be connected to the vehicle communication module (VCI) via the USB cable  . Then, connect the communication module to the vehicle and switch on the PIWIS Tester.


  1. Disconnect electric plug connection for the fan blower -1-  (-arrow-  ) to prevent the blower from coming on during control unit programming. Having the fan on and the associated increased current draw can cause a drop in voltage, which can result in abnormal termination of control unit programming.
    Fig 1: Disconnecting Connector
    G09813653Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Connect a battery charger with a current rating of at least 40 A  (e.g. battery charger HFL 65 WE 1353  ) to the jump-start terminals in the engine compartment and switch it on.
  3. Switch on the ignition using the original driver's key  . On vehicles with "Porsche Entry & Drive", do this by replacing the control panel in the ignition lock with the original driver's key if necessary.
  4. PIWIS Tester II 9818  must be connected to the vehicle communication module (VCI) via the USB cable  . Then, connect the communication module to the vehicle and switch on the PIWIS Tester.