See also:

Switching off automatically
The system switches off and the LED goes out: After approx. 33 ft/10 m when driving forward. Above approx. 9 mph/15 km/h when driving forward. Switch on the system again if necessary. ...

BMW 7 Series Owners Manual
h4 {color:#800000} h3 {color:#0033CC} h2 {color:#008000} h1 {color:#FF0000} ...

Sockets
The lighter socket can be used as a socket for electrical equipment while the engine is running or when the ignition is switched on. The total load of all sockets must not exceed 140 watt at 1 ...