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– Transmission of the telephone book en-
tries is not yet complete.
– It is possible that only the telephone
book entries of the mobile phone or the
SIM card are transmitted.
– It may not be possible to display tele-
phone book entries with special charac-
ters.
– It may not be possible to transmit con-
tacts from social networks.
– 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 memos.
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 telephone connection quality
be improved?
– The strength of the Bluetooth signal on
the mobile phone can be adjusted, de-
pending on the mobile phone.
– Insert the mobile phone into the wire-
less 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
The following mobile devices can be con-
nected to the USB port:
– Mobile phones.
– Audio devices with USB port, for in-
stance MP3 players.
– USB storage devices.
Common file systems are supported.
FAT32 and exFAT are the recommended
formats.
A connected USB device will be supplied
with charge current via the USB port if the
device supports this. Follow the maximum
charge current of the USB port.
The following uses are possible on USB
ports with data transfer:
– Exporting and importing driver profiles,
refer to page 71.
– Playing music files via USB audio.
– Playing videos via USB video.
– Loading of software updates, refer to
page 58.
Follow the following when connecting:
– Do not use force when plugging the con-
nector into the USB port.
– Use a flexible adapter cable.
– Protect the USB device against mechani-
cal damage.
– Due to the large number of USB devices
available on the market, it cannot be
guaranteed that every device is operable
on the vehicle.
– Do not expose USB devices to extreme
environmental 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 device cannot be
guaranteed in all cases.
– To ensure proper transmission of the
stored data, do not charge a USB device
via the onboard socket, when it is con-
nected to the USB port.
– Depending on how the USB device is be-
ing used, settings may be required on
Seite 55
General settings AT A GLANCE
55
Online Edition for Part no. 01405A2C1C9 - II/21
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