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– The number of phone book entries to be
stored is too high.
– Data volume of the contact too large, for
instance due to stored information such
as notes.
Reduce the data volume of the contact.
– A mobile phone is only connected as an
audio source.
Reconfigure the mobile phone and con-
nect it with the telephone or additional
phone function.
How can the phone connection quality be
improved?
– The strength of the Bluetooth signal on
the mobile phone can be adjusted, de-
pending on the mobile phone.
– Insert mobile phone into the wireless
charging tray.
– Adjust the volume of the microphone
and loudspeakers separately.
If all points in this list have been checked
and the required function is still not availa-
ble, contact the hotline, a dealer’s service
center or another qualified service center or
repair shop.
USB connection
General information
Mobile devices with a USB port are con-
nected to the USB interface.
– Mobile phones.
– Audio devices with USB port, for in-
stance MP3 player.
– USB storage devices.
Common file systems are supported.
FAT32 and exFAT are the recommended
formats.
The following applications are possible:
– Exporting and importing driver profiles,
refer to page 79.
– Playing music files via USB audio.
– Playing videos via USB video.
– Loading of software updates, refer to
page 64.
Follow the following when connecting:
– Do not use force when plugging the con-
nector into the USB interface.
– Use a flexible adapter cable.
– Protect the USB storage device against
mechanical damage.
– Due to the large number of USB media
available on the market, it cannot be
guaranteed that every device is operable
on the vehicle.
– Do not expose USB media to extreme en-
vironmental conditions, such as very
high temperatures; refer to the owner's
manual of the device.
– Due to the many different compression
techniques, proper playback of the me-
dia stored on the USB storage device
cannot be guaranteed in all cases.
– A connected USB storage device will be
supplied with charging current via the
USB interface if the device supports
this.
– To ensure proper transmission of the
stored data, do not charge a USB storage
device via the onboard socket, when it
is connected to the USB interface.
– Depending on how the USB storage de-
vice is being used, settings may be re-
quired on the USB storage device, refer
to the owner's manual of the device.
Not compatible USB media:
– USB hard drives.
– USB hubs.
– USB memory card readers with multiple
inserts.
– HFS-formatted USB media.
– Devices such as fans or lamps.
Seite 61
General settings AT A GLANCE
61
Online Edition for Part no. 01402723778 - VI/18
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