BMW 3: Set-up and use

 General information, Safety information

General information When using run-flat tires or a flat tire kit, a wheel does not always need to be changed immediately when there is a loss of tire inflation pressure due to a flat tire. If needed, the tools for changing wheels are available as accessories from a dealer's service center or anothe

 Monitoring functions

High-voltage interlock loop The SME control unit evaluates the signal of the high-voltage interlock loop and checks whether there is an open circuit with this circuit. In the event of an open circuit, the battery management electronics control unit can cause the high-voltage system to perform a qu