See also:

Avoid high engine speeds
Driving at a low engine speed reduces fuel consumption and minimizes wear. ...

Switching off automatically
System switches off: above approx. 9 mph/ 15 km/h. Switch on the system again if necessary. ...

Notes
Shatter-proof containers and no hot drinks Use light and shatter-proof containers and do not transport hot drinks. Otherwise, there is the increased danger of injury in an accident.◀ ...