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General notes

Fig 1: Caution - High Voltage Electrical System
G09908310Courtesy of BMW OF NORTH AMERICA, INC.
WARNING: Hybrid cars have an additional high-voltage electrical system which has its own safety regulations to be observed. Work on live high-voltage components is expressly prohibited. Prior to every operation which involves a high-voltage component, it is essential to disconnect the high-voltage system from the voltage supply and to secure it against unauthorized return to service.
  1. Switch off ignition.
  2. Remove the high-voltage safety connector.
  3. Prevent the high-voltage safety connector from being reinserted.
  4. Switch the ignition on.
  5. Always wait 10 seconds until the "High-voltage system switched off" Check Control message (ID 636) appears in the instrument cluster.
    Fig 2: Identifying High-Voltage Battery Handling Sign
    G09908311Courtesy of BMW OF NORTH AMERICA, INC.
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