BMW 3 Owners & Service Manuals

BMW 3: What must be observed when charging the high-voltage battery unit?

BMW 3 Series G20 (2018-2024) Training manual / Charging the High-voltage Battery Unit / General information on charging / What must be observed when charging the high-voltage battery unit?

It is not permitted to simultaneously charge the high-voltage battery unit and fill the fuel tank When the charging cable is connected, do not fill the fuel tank and keep a safe distance from highly flammable materials. Otherwise, in the event of an improper connection or if the charging cable is pulled out, there is a risk of personal injury or material damage, for example by burning fuel.

Charging the high-voltage battery unit using a typical household power socket results in a high continuous load on the power socket, which does not occur with other household appliances.

Therefore, the following information must be observed:

  • Do not use an adapter or extension cable.
  • First of all, connect the EVSE to the household socket, then to the charging socket at the vehicle.
  • After charging unplug the charging plug at the vehicle and then at the wall.
  • Avoid tripping hazards and mechanical loads for charging cables and power sockets.
  • Do not insert the charging plug in damaged sockets.
  • Do not use damaged charging cables.
  • The charging plug and charging cable may become warm when charging the high-voltage battery unit. If they become too hot, the power socket is not suitable for charging or the charging cable is damaged. Stop charging immediately and have the power socket and charging cable checked by an electrician.
  • In the event of repeated charging faults or terminations contact a suitably qualified Service employee.
  • Only use sockets protected against moisture and weathering.
  • Do not touch contact areas of connectors with fingers or objects.
  • Never repair or modify a charging cable yourself.
  • Remove cable on both sides before cleaning. Do not immerse in fluids.
  • Do not go through a car wash during charging.
  • Only charge at power sockets checked by an electrician.
  • Observe special information in the operating instructions for charging at unknown or unfamiliar infrastructure/power sockets. Then adjust the charge current setting in the vehicle to the lowest value.

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