Technical information

High-voltage component overview based on the example of the 3 Series active hybrid 3 F30:
High-voltage safety
With improper use, the high voltage in the high-voltage system may become a source of danger. The vehicle therefore
has a comprehensive safety concept. Only technicians who have been appropriately trained are permitted to carry out
the repair, maintenance and servicing of high-voltage components including the orange-coloured high-voltage cables.
Unauthorised repair work on the high-voltage system is forbidden.
Further information on high-voltage safety
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The high-voltage battery is located in the crash-protected area. For details see emergency services cards.
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By disconnecting the plug connection of the high-voltage rescue separation point, the high-voltage system is
deactivated (de-energised).
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The high-voltage system is galvanically isolated from GND.
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All connections and connectors on the vehicle high-voltage components are designed to be safe to touch.
.
The high-voltage system is switched-off when:
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the plug connection of the high-voltage rescue separation point is disconnected
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a crash is identified that causes a triggering of airbag and/or belt tensioner, or
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the 12 V battery negative connection at the negative battery terminal is disconnected
Item Explanation
1 Electrical refrigerant compressor
2 Electric machine
3 Electrical machine electronics
4 High-voltage battery
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