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:
Check the tire inflation
pressure regularly
Check and, if necessary, correct the tire inflation
pressure at least twice a month and before starting
on a long trip.
Low tire inflation pressure increases rolling resistance
and thus raises ...
DTMF suffix dialing
DTMF suffix dialing can be used for gaining access
to network services or for controlling devices,
e.g., to make a remote inquiry of an answering
machine. The DTMF code is needed for this
purpose. ...
Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for
approx. five seconds.
2. "OK" ...