Buick Regal Navigation Manual page 31

There may be problems with
operation and function in the
following situations:
When connecting an iPod on
which a more recent version of
the firmware is installed than is
supported by the infotainment
system.
When connecting an iPod on
which firmware from other
providers is installed.
To connect and control an iPod,
connect one end of the standard
iPod USB cable to the iPod's dock
connector. Connect the other end to
the USB port in the center console.
iPod music information displays on
the radio s display and begins
playing through the vehicle s audio
system.
The iPod battery recharges
automatically while the vehicle is on.
When the vehicle is off while an
iPod is connected using the iPod
USB cable, the iPod battery stops
charging and the iPod automatically
turns off.
If the iPod is an unsupported model,
it can still be listened to in the
vehicle by connecting to the
auxiliary input jack using a standard
3.5 mm (1/8 in) stereo cable.
Press to play the
tracks randomly. Press again to
stop shuffle.