Removing Control Unit For HV Battery

→ Work on the high-voltage battery may only be carried out by a high-voltage technician.

→ Always use insulated tools Insulated tool set WE 1593  when working on the high-voltage battery.

→ Observe general warning notes for working on the high-voltage vehicle electrical system. → 2X00IN GENERAL WARNING NOTES FOR WORKING ON THE HIGH-VOLTAGE ELECTRICAL SYSTEM

Information 

Always use insulated tools Insulated tool set WE 1593  when working on the high-voltage battery and a high-voltage cordon High-voltage  cordon WE 1589  when working on a HV work bay.

1. Loosen fastening nuts -1, 2-  on the cover of the HV battery control unit and remove cover -3-  .
   Fig 1: Identifying Fastening Nuts On Cover Of HV Battery Control Unit

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Remove spacers under the fastening nuts -1-  .
3. Remove ground strap.
   Fig 2: Identifying Ground Strap

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Loosen fastening nuts -1-  on the HV battery control unit and pull off HV battery control unit -2-  .
   Fig 3: Identifying Control Unit For HV Battery Fastening Nuts

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Release electric plug connection -1-  at the HV battery control unit completely -a-  and disconnect it -A-  .
6. Release electric plug connection -2-  completely -b-  and disconnect it -B-  .
   Fig 4: Disconnecting Electric Plug Connections

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Remove control unit for HV battery.
8. Clean screw thread at the fastening points carefully with a vacuum cleaner. Make sure that no dirt gets into the battery housing. Only use a vacuum cleaner with a plastic nozzle.