See also:

Rear window defroster
Press the button. The rear window defroster switches off automatically after a certain period of time. Depending on the vehicle equipment, upper wires are used as an antenna and are not part of ...

After the ignition is switched off
The roof can still be operated for approx. 1 minute, as long as no door has been opened. ...

Coolant
Coolant consists of half water and half additive. Not all commercially available additives are suitable for your BMW. Ask your BMW center for suitable additives. Only use suitable additives; other ...