2011 MERCEDES-BENZ SLK55AMG ECO mode

A data medium may contain a maximum of
500 tracks.
The directory depth may not exceed a
maximum of 8 levels. The system will ignore
files in lower levels.
Track and folder names
When
you create an MP3/WMA disc, you can
assign names to the MP3/WMA tracks and
folders.
The audio system uses these names for the
corresponding display in MP3 mode. Empty
folders or folders which contain data other
than MP3/WMA tracks are not displayed by
the audio system.
If MP3/WMA files are saved in the root
directory itself (uppermost directory on
storage medium), the root directory will also
be treated as a folder. The audio system will
then show the name of the root directory as
the folder name.
You must observe the following when
assigning track names:
R Track names must have at least one
character.
R Track names must have the extension
“mp3” or “wma”.
R There must be a period between the track
name and the extension.
Example of a correct track name:
Track1.mp3
The audio system is unable to recognize an
MP3/WMA track if
R there is no period between the track title
and the extension
R there is no extension
i The audio system does not support ID3
tags.
Supported file formats
Supported file formats are:
R MP3
R WMA i
If music files of file formats other than
MP3
are stored together with MP3 files on
one disc, the loading process may take
longer.
Permissible MP3 formats
The audio system supports the MPEG1 Audio
Layer 3 format.
i This format is generally known as “MP3”.
Permissible bit and sampling rates are:
R fixed and variable bit rates up to
320 kbit/s
R Sampling rates of 24 kHz – 48 kHz
i Only use MP3 tracks with a bit rate of at
least 128 kbit/s or higher and a sampling
rate of at least 44.1 kHz or higher. Smaller
rates can cause a noticeable deterioration
in sound quality. This is especially the case
if you have the surround sound function
activated.
WMA (Windows Media ®
Audio)
Windows Media ®
Audio (WMA) is an audio
data compression technology developed by
Microsoft ®
.
The audio system supports the following
types of audio files:
R fixed bit rates of 5 kbit/s up to
384 kbit/s
R Sampling rates from 8 kHz to 48 kHz
The audio system does not support the
following WMA files:
R DRM (Digital Rights Management) coded
files
R variable bit rates
R WMA Pro
R 5.1 Surround
Notes on copyright
The music tracks that you create and play
back in the MP3 and WMA format are
generally subject to copyright protection in Audio system
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accordance with the applicable international
and national regulations.
In many countries, reproductions are not
permitted without the prior consent of the
copyright holder, not even for private use.
Make sure you know the applicable copyright
regulations and that you comply with these.
If you own these rights yourself, e.g. for your
own compositions and recordings, or the
copyright holder has granted you permission,
these restrictions do not apply.
Operating the CD changer
:
CD slot
; Load/eject button V
= Forward F
? Rewind E
The CD changer can hold up to a total of six
audio CDs.
X Switching to CD mode: Press button
h on the audio control unit.
The CD mode display appears when you
switch to CD mode. If there is a CD in one
of the magazine trays, it will start to play
automatically. The following message will
appear if no CDs are inserted. G
Warning!
In order to avoid distraction which could lead
to an accident, the driver should insert or
eject CDs with the vehicle at a standstill and
operate the audio system only if permitted by
road, weather and traffic conditions.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
i If the audio CD is printed on one side, this
side must face upwards when loaded. If
neither side is printed, the side to be played
must face downwards.
If a CD has been inserted incorrectly or
cannot be read, Disc Unreadable
appears in the display.
Loading an individual magazine
compartment:
X Press load/eject button V.
A menu indicates which magazine
compartments are currently loaded.
X Press desired button j to p in the
keypad to select a magazine compartment.
or
X Press button = or ; to select a
magazine compartment.
The selected magazine compartment is
indicated by a red number.
X Press button 9 to confirm.
The CD changer will switch to the selected
magazine compartment. The message
Please Wait... appears in the display.
i Only insert a CD after the audio system
has prompted you to do so with the
message Please Insert Disc . Only
insert one CD per magazine compartment.
X Insert CD into CD slot.
The CD changer automatically pulls the CD
into the CD slot and places it in the selected
magazine compartment. The message 134
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Selecting a track
X
Skipping forwards or backwards to a
track: Press button = or ; when the
main area is selected in the display.
or
X Briefly press button E or F on audio
control unit.
i Skipping forwards through the tracks
skips to the next track. Skipping backwards
through the tracks skips to the beginning
of the current track if the track has been
playing for more than 8 seconds. If the
track has been playing for less than
8 seconds, it skips to the start of the
previous track. If you have switched on the
Random Tracks playback option, the order
of the tracks is random.
Selecting via track list
X In audio CD operation: Select Track
List.
or
X In MP3 operation: Press button 9 when
the main area is selected in the display.
The track list appears. A dot # indicates the
current track.
X Selecting a track: Press button 9
or :.
X Press button 9 to confirm.
i In MP3 mode, the list shows all the tracks
in alphabetical order.
Selecting via keypad
X Press button l on the keypad.
A numerical input field appears. The
number of available digits depends on the
number of tracks on the CD. You can only
enter digits that correspond with the
number of tracks on the CD.
X Select the desired track number.
i When you press a keypad button for
longer than 2 seconds, input is completed
and the respective track is played. You can then omit the next step by pressing button
9.
X Completing input: Press button 9.
The track is played.
Fast forward/rewind
X Main area is selected: Press and hold
button = or ; until desired place is
reached.
or
X Press and hold button E or F on
audio control unit.
Selecting a folder
i This function is only available in audio
MP3 mode.
X Switch to MP3 operation ( Y page 136).
X Select Folder.
or
X Press button 9 when the main area is
selected in the display.
The folder list appears. :
Current folder name
; Moving to superordinate folder
= Current track
? Track symbol
X Move to the superordinate folder: Select
the U symbol and press button 9.
The display now shows the next higher
folder level. 138
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:
Current folder
; Folder symbol
X Selecting a folder: Press button 9
or :.
X Press button 9 to confirm.
You will see the tracks in the folder.
i Due to the large amount of information
found on an MP3 disc it may take a while
before all folder and track information
becomes available. During this time the
folder list may be unavailable or slow.
X Selecting a track: Press button 9
or :.
X Press button 9 to confirm.
The track is played and the corresponding
folder is now the active folder.
Playback options
The following options are available:
R Normal Track Sequence
Tracks playback in the order on the disc
(e.g. track 1, 2, 3, etc.).
R Random Tracks
Tracks playback in a random order (e.g.
track 3, 8, 5, etc.).
R Random Folder (in MP3 mode only)
Tracks in the active folder playback in
random order. X
Selecting options: Switch to audio CD or
MP3 operation.
X Select CD or MP3 and press button 9.
The option list appears. A dot # indicates
which option is switched on.
X Select an option and press 9.
The option is switched on. For all options
except Normal Track Sequence, you will
see a corresponding indicator in the main
area.
i The Normal Track Sequence option is
automatically activated when you select a
different medium. If an option is activated,
it remains activated after the audio system
is switched on/off. Media interface
G
Warning!
Operating an external audio source while the
vehicle is in motion will distract you. You may
not notice changing road and/or traffic
conditions which may cause an accident.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
For your safety and the safety of others, pull
over to a safe location and stop before
operating an external audio source. :
Media interface Audio system
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Deselecting an AUX device:
X
Press h to switch back to CD mode.
Selecting audio files i
The audio system lists the stored data on
an iPod ®
, MP3 player, or USB storage
medium according to their own respective
file structure.
Selecting via track skipping
X Skipping backwards or forwards to a
track: Press button = or ;.
or
X Briefly press button E
or F on audio
control unit.
i Skipping forwards through the tracks
skips

to the next track. Skipping backwards
through the tracks skips to the beginning
of the current track if the track has been
playing for more than 8 seconds. If the
track has been playing for less than
8 seconds, it skips to the start of the
previous track. When you have chosen a
playback option other than Normal Track
Sequence, the track sequence is random.
Selecting via keypad
X Initiating input: Press button l.
A numerical input field appears. The
number of available digits depends on the
number of stored tracks.
X Entering track number: Press a keypad
button, e.g. q.
The digit appears in first place of the entry
line.
i The audio system will reject invalid
entries and does not display them.
X Enter additional digits as required.
X Completing input: Press button 9.
or
X Press and hold keypad button for last digit
of desired track number.
The track is played. Fast forward/rewind
X
Main area is selected: Press and hold
button = or ; until desired place is
reached.
or
X Press and hold button E or F on
audio control unit.
i With an iPod ®
the function “fast rewind”
is only available within the current track.
Selecting categories and folders iPod
®
and selected MP3 players
iPods ®
and selected MP3 players let you
select tracks via categories and folders.
The following categories may be available:
R Current Track List
R Playlists
R Artists
R Albums
R Tracks
R Podcasts
R Genres
R Composers
R Audiobooks
i Some categories contain the entry All.
When

you select this entry, the category is
played completely.
USB storage media
With USB storage media you can select
folders and, if available, playlists. When
playing playlists, the audio system can display
the respective album name and artist, e.g.
meta data, if such information has been read
into the system.
Playlists are displayed using a particular
symbol. When you open a playlist, the
contained tracks are opened and playback
begins. The available playback option is now
Random Categories instead of Random
Folder. Audio system
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has been read-in completely, the first list
entry with the entered initial letter is
highlighted.
i If no match is found, the last entry that
matches a previous initial letter is
highlighted.
The quality of the search results depends
on the version and the language of the
software, e.g. iTunes™ used to store data
on the iPod ®
or MP3 player.
USB storage media
i This function is only available for
alphabetically ordered files. It is not
available for playlists.
X Press the respective keypad button once or
multiple times to enter the initial letter of
the desired artist name.
The available initial letters are displayed.
If the file system contains folders only, the
system searches for folders and the
message Please Wait... appears. Once
the search is concluded, the first list entry
with the entered initial letter is highlighted.
If this is not the case, the system searches
for tracks. The message Please Wait...
appears. Once the search is concluded, the
first list entry with the entered initial letter
is highlighted.
Select active partition USB storage media may contain up to
4 partitions (primary or logical; formatted to
FAT16 or FAT32).
X
Selecting partition: h Q Media
Inter QSelect Active Partition.
Playback options The following options are available:
R
Normal Track Sequence
Tracks are played in standard order (e.g.
numerical or alphabetical order).
R Random Tracks Tracks are played in random order.
R Random Categories or Random Folder
(when folder was selected on USB storage
medium)
Tracks of the current category or of the
current folder are played in random order. Audio AUX mode
i This section applies to vehicles without
media interface only.
An external audio source can be connected
to the AUX socket of the audio system. Please
contact an authorized Mercedes-Benz Center
for more information. AUX socket
: is designed for a 3.5 mm
stereo jack (3-pin), for devices with dedicated
analog audio output or connection via
headphone port, e.g. MP3 or tape player. G
Warning!
Operating an external audio source while the
vehicle is in motion will distract you. You may
not notice changing road and/or traffic
conditions which may cause an accident.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
For your safety and the safety of others, pull
over to a safe location and stop before
operating an external audio source. Audio system
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Calling up AUX mode
G
Warning!
Due to the different volumes of the external
audio sources, system messages of the
vehicle may be much louder. You may need to
disable these system messages or adjust the
volume of these messages manually.
X Selecting audio AUX mode:
Press button h repeatedly until the
main menu for AUX operation appears.
or
X In CD mode: Select CD/MP3 Q Aux.
The audio AUX menu appears. The medium in
the external audio source is heard, provided
it is connected and switched to playback.
i Please refer to the relevant operating
guide for operation of the external audio
source.
The following settings can be made in the
audio AUX mode:
R Volume ( Y page 117)
R Balance control ( Y page 118)
R Bass and treble control (Y page 118)
R Surround sound ( Y page 119)
i The volume of external audio sources is
extremely variable. It is possible that a
device connected as an external audio
source will sound quieter or louder in the
vehicle or that the usual maximum volume
cannot be achieved. On certain devices the
volume can be set separately. In this case,
start at a moderate volume and increase it
slowly. In this way, you can determine
whether the system is capable of playback
without distortion, even at high volume.
Volume adjustment for the audio device
You can increase the volume for the AUX
socket in case the internal volume of the
connected audio device is too low. Use the
setting Boost for such devices. You should set the system back to
Standard before connecting a different audio
device to the AUX socket.
X
Select Volume in AUX mode.
The selection list appears. The dot #
indicates the currently selected setting. :
Default setting
; Volume boost
Switch back to CD mode X
Press button h.
or
X Select Back To Disc in the audio AUX
menu. Telephone
Safety precautions G
Warning!
Please do not forget that your primary
responsibility is to drive the vehicle. A driver’s
attention to the road must always be his/her
primary focus when driving. For your safety
and the safety of others, we recommend that
you pull over to a safe location and stop
before placing or taking a telephone call.
If you choose to use the mobile phone 8
while
driving, please use the hands-free device and
only use the mobile phone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile phone while driving a vehicle.
8 Observe all legal requirements. 146
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1-800-FOR-MERCedes
(1-800-367-6372)
(in the USA)
R call Customer Service at
1-800-387-0100 (in Canada)
Activating Bluetooth ®
X Switch on the mobile phone (see mobile
phone operating instructions).
X Enter the PIN (not necessary with some
mobile phones or network).
X Activate Bluetooth ®
connection on the
mobile
phone (see mobile phone operating
instructions).
X Press button %
on the audio control unit
to call up the telephone mode.
i On certain mobile phones, not only you
will have to activate the Bluetooth ®
function but in addition, your own device
must be made "visible" for other devices.
Each Bluetooth ®
device has a Bluetooth ®
device name. It is recommended to give
your mobile phone a personal name, by
which you can clearly recognize your
mobile phone.
i If the Bluetooth ®
function on the audio
system is disabled, the message
Bluetooth not activated in system
settings appears.
X Activate Bluetooth ®
connection on the
audio system
(Y page 120).
X i Q System Settings Q
Bluetooth Q Activate Bluetooth.
You have activated or deactivated
Bluetooth ®
. A checkmark appears when
Bluetooth ®
is activated.
Registering a mobile phone
(authorizing) When you use your mobile phone in
conjunction

with the audio system for the first
time, you must register (authorize) it. It is possible to register up to 15 mobile
phones.

The connection is always established
to the last activated mobile phones in signal
range. When you authorize a new mobile
phone, it is activated automatically. You can
switch between the authorized mobile
phones.
Searching for a mobile phone
X % Q Phone Q Bluetooth Phones
Q Update.
The audio system searches for up to 10
suitable Bluetooth ®
telephones within
range and enters them into the telephone
list.
Authorized Bluetooth ®
telephones will be
identified

by a telephone-symbol L in front
of the list entry once the telephone list has
been updated. The symbol will be grayed
out if the authorized mobile phone is not
located within the Bluetooth ®
range.
i The duration of the search procedure
depends on the number and type of
Bluetooth ®
telephones. The search may
take a few minutes.
i If the telephone list is already full
(15 entries), you must de-authorize one of
the authorized devices ( Y page 151), and
start the search again. Otherwise a new
device you are looking for will not appear
in the list.
If the audio system does not find your
mobile phone, external authorization may
be necessary ( Y page 150).
Authorizing a Bluetooth ®
device
X Select the desired unauthorized device
from the telephone list by pressing the
buttons 9, : and 9.
or
X Select Options Q Authorize.
The input menu for the passcode appears. Audio system
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