Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption.
See also:
Telephone
...
Rear CD/DVD player
1 CD/DVD slot
2 Eject CD/DVD
3 On/off, right
4 Headphone connection, right
5 RCA sockets
6 Headphone connection, left
7 On/off, left ...
Maintenance
The battery is maintenance-free, i.e., the electrolyte
will last for the life of the battery.
Your service center will be glad to advise you on
questions regarding the battery. ...