MERCEDES-BENZ SLK-Class 2008 R171 Comand Manual

51 Audio
Single CD operation
The following options are available:
Selecting via track skip

Selecting via track list
( page
51)

Selecting via manual entry of the track number
( page
52)

Selecting via scan search
( page
52)
Selecting via track skip
On the COMAND control unit
Open the Single CD main menu ( page
50)
.

Press
-
for forward skipping;
or
Press
,
for backward skipping.
The tracks skip immediately after
pressing one of the buttons.
On the multifunction steering wheel
Switch the multifunction display in the
instrument cluster to the Single CD dis
-
play
( page
27)
.

Press
j for forward skipping;
or
Press
k for backward skipping.
The tracks skip immediately after
pressing one of the buttons.
Selecting via track list The track list contains all tracks of the cur
-
rent CD. Only one list entry is visible at a
time, it is the number of the track currently
playing.
Use

or

to select another track
from the list.
The current track remains playing while
selecting.

Press
 or wait approx. 3 seconds
without changing the selection.
The newly selected track is played.
Selecting a track iForward skipping:

The next track is played.Backward skipping:

If the track has been playing longer
than approx. 10 seconds, the system
skips back to the beginning of the
track.

If less than 10 seconds have played,
the system skips back to the beginning
of the previous track.

52 AudioSingle CD operationSelecting via manual entry of the track
number 
Open the Single CD main menu ( page
50)
.

Press
2
.
The Manual track input display ap
-
pears.
1Number of tracks on the CD (12 tracks)Entry example: Track 1
Press
3
.
Entry example: Track 12
Press
3
and

in quick succession.

Wait approx. 3 seconds after entering
the number.The selected track is played. The CD
main menu appears.
Selecting via scan search Scan search is characterized as follows:
Scan search plays each track on the
current CD for approx. 8 seconds.

Scan search can be ended manually.

Scan search automatically stops at the
track listened to before the scan
search was started.
Starting scan search 
Press the
Scan
soft key.
Ending scan search manually 
Press the
Scan
soft key.
The track playing at the time the scan
is ended remains playing.

Open the Single CD main menu ( page
50)
.

Press and hold
-
or
,
.

To stop release
-
or
,
.
iEntries beyond the number of available
tracks on the CD are not possible.
iWhen you start the scan search, play
-
back option
Normal Sequence
( page
53)
is activated automatically.
Fast forward/reverse

53 Audio
Single CD operation
The following options are available:
Normal
sequence


Repeat
track

Random
track
Explanation of the playback options 
Normal
sequence
The tracks are played in the normal se
-
quence (e.g. track 1, 2, 3 etc.).The last track is followed by the first
track of the CD.

Repeat
track

The current track will be repeated until
this function is deactivated.

Random trackThe tracks are played in random order
(e.g. track 3, 8, 5 etc.).
Changing the playback option 
In the Single CD main menu ( page
50)
press the
Setting
soft
key. The Settings menu is displayed.

The solid circle
indicates which op
-
tion is currently selected.

Press
 or  to select a different
option.

Press
.
The option is activated. A correspond
-
ing display will appear in the status bar
for all options except Normal
sequence
.
An option will remain activated even if
COMAND is switched OFF and then ON
again.
Playback options

54 AudioMP3 operationSafety InstructionsWarning
G
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and oper
-
ate the audio system only when road, weath
-
er and traffic conditions permit.Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate
-
ly 14 m) every second.
Warning
G
The CD drive is a Class 1 laser product.
There is a danger of invisible laser radiation
when you open or damage the cover.Do not remove the cover. The CD drive does
not contain any parts serviceable by the us
-
er. For safety reasons, have any necessary
service work performed by qualified person
-
nel.Tips on data storage media!Do not attach labels of any type to the
CD. They may become detached and
damage the drive.Do not play single CDs (80mm) with an
adapter. An adapter could become
stuck and damage the drive. Only use
12 cm diameter CDs.
!Your CD drive has been designed to
play CDs which correspond to the IEC
60908 standard. Therefore only CDs
not exceeding a thickness of 1.3 mm
can be used. If you insert thicker data carriers, e.g.
ones that have data on both sides (one
side with DVD data, the other side with
audio data), they will become stuck and
damage the drive.Data carriers which contain data on
both sides can cause playback prob
-
lems because the storage layers are
thinner than one-sided data carriers.

55 Audio
MP3 operation

Only touch the CD on the edges.

Clean the CD with a dry, lint-free cloth.
Wipe the CD a straight line from the
center. Never wipe the CD in a circular
motion.

Do not use rubbing alcohol or solvents
to clean CDs.

Do not expose the CDs to heat or direct
sunlight.

Do not write or put labels on CDs
Permissible MP3 CDs In MP3 mode COMAND can read CD-R and
CD-RW CDs.Permissible file systemsThe permitted file system is

ISO9660/Joliet for CD-R and CD-RW.Multi session CDsWith multi session CDs, the content of the
first session determines how COMAND
treats the CD.
For example, if the first session contains
data in audio CD format and the second
session contains data in MP3 format,
COMAND will treat the CD as a conven
-
tional audio CD.File structureWhen creating a MP3 CD, you can organize
MP3 tracks into folders. A folder can also
contain additional folders.The root directory may have a maximum of
255 entries in total. (folders or tracks)

A CD may have a maximum of 255 folders
in total. A maximum of 255 tracks are per
-
missible per folder.Mathematically a maximum of 65025
tracks would result. However, this amount
is usually not reached since MP3 requires
approx. 1 MB storage per minute recorded.
Tips on caring for your MP3 CDsTips on creating MP3 CDs iCDs, software and hardware for writing
audio data to CDs are widely available.
Therefore, we cannot guarantee that
COMAND will be able to play every
user-written CD.
iProblems may be encountered during
playback of user-written CDs with a
storage capacity of more than 700 MB.
These CDs do not meet valid standards
as of this printing.

56 AudioMP3 operationTrack names and folder namesWhen creating an MP3 CD, you can assign
names to the MP3 tracks and folders.

COMAND uses these names in MP3 mode
for the corresponding display.Please note the following when assigning
folder and track names:
Per folder a maximum of 1800 charac
-
ters are available for title and folder
names combined.

Exceeding this number, COMAND can
-
not display all titles and folders.

Track and folder names must contain
at least 1 character.

Track names may contain up to fifty
characters. If a name exceeds this
character limit, COMAND will not be
able to display it in full.

Track names must have the extension
“mp3”.

A period must appear between the
track name and the file extension.Example of a correct track name:
Track1.mp3
Empty folders or folders containing data
other than MP3 tracks will not be dis
-
played by COMAND.If MP3 files are stored in the root directory
itself, the root directory also counts as a
folder. COMAND will then display the root
directory name as a folder name. Permissible MP3 formatsCOMAND supports the MPEG1
Audio
Layer
3 format.
Permissible bit and scan rates 
Fixed and variable bit rates up to 320
kbps

Scan rates from 24 kHz - 48 kHz
.
iCOMAND does not support ID3
tags.
Tips on creating MP3 tracks
iIn everyday speech, this format has
been replaced by the designation
“MP3”.iIt is recommended to use MP3 tracks
with a bit rate of128 kbps or higher and
with a scan rate of 44.1 kHz or higher.
Lower rates may impair quality. This is
particularly true if the sound function LOGIC7 Surround
has been activated.

57 Audio
MP3 operation
The music tracks that you can create for
play back in MP3 mode are generally
copyright-protected under applicable in
-
ternational and national laws. In many countries, the reproduction of
copyrighted material is not permitted,
even if only for personal use, without the
express prior consent of the copyright
holder.Please check the current copyright laws
for your country and comply with them.These restrictions do not apply for exam
-
ple to your own compositions and record
-
ings, or for recordings for which
authorization has been obtained from the
copyright holder.

Open the MP3 main menu
( page
58)
;
or
Load an MP3 CD into the COMAND CD
drive.
The COMAND CD drive holds one CD. Lo
-
cated above the display is the CD slot 3
for loading the drive
( page
16)
.
Tips on copyright
Switching to MP3 mode iThe COMAND CD drive and the CD
changer* support MP3 CDs.Loading a MP3 CDWarning
G
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and oper
-
ate the audio system only when road, weath
-
er and traffic conditions permit.
Warning
G
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate
-
ly 14 m) every second.!If a CD is already loaded, it must be
ejected before inserting the new CD.

Inserting a second CD in the slot with
another CD still loaded will cause dam
-
age to the CD drive not covered by the
Mercedes-Benz Limited Warranty.

58 AudioMP3 operation
Insert a MP3 CD face up into the CD
slot while COMAND is switched ON.COMAND pulls in the CD and loads the
data. It may take a while to load the da
-
ta, depending on the number of folders
and tracks.After loading, COMAND plays the CD.

Press
7.
COMAND ejects the CD.

Remove the CD from the slot.If you do not remove the CD from the
slot, COMAND will automatically pull it
back after approx. 7 seconds.

Open the Audio main menu ( page
38)
.

Press the
MP3
soft key.
COMAND loads the MP3 CD data. This
may take a while depending on the
number of folders and tracks.The MP3 main menu appears. You will
hear the last track played.
1Current folder2Current track3Elapsed track time4Track number within the current fold
-
er/number of tracks in current folder
Ejecting a MP3 CD MP3 main menu
iThe
MP3
soft key will only appear if an
MP3 CD has been loaded.
iOn MP3 tracks with variable bit rates,
the elapsed track time displayed may
deviate from the actual time elapsed.

59 Audio
MP3 operation
If the MP3 tracks are organized into folders
on the CD, you can select a folder from the
COMAND control unit.The following options are available:
Selecting via folder list

Selecting via extended folder list
Selecting via folder listOnly one folder can be viewed at a time.
1Current folder
Open the MP3 main menu
( page
58)
;

Press
 or  to select a folder.

Wait approx. 3 seconds without chang
-
ing the selection.The COMAND changes the folder and
loads the data from the new folder.

It may take a while to load the data, de
-
pending on the number of folders and
tracks.
Selecting via extended folder list
In the MP3 main menu
( page
58)
,
press the
Folder
soft key.
The extended folder list appears.

Press
 or  to select a folder.
Selecting folders iThe folder list only contains folders in
which MP3 tracks are stored.
iThe extended folder list only contains
folders in which MP3 tracks are stored.


60 AudioMP3 operation
Press
.
COMAND changes the folder and loads
the data from the new folder.

It may take a while to load the data, de
-
pending on the number of folders and
tracks.
The following options are available:
Selecting via track skip
( page
60)

Selecting via track list
( page
60)

Selecting via direct entry of the track number
( page
61)

Selecting via scan search
( page
61)
Selecting via track skip On the COMAND control unit
Open the MP3 main menu
( page
58)
.

For forward skipping press
-
;
or

For backward skipping press
,
.
The tracks skip immediately after
pressing one of the buttons.
On the multifunction steering wheel 
Switch the multifunction display in the
instrument cluster to the MP3 display ( page
27)
.

For forward skipping press
j;
or
For backward skipping press
k.
The tracks skip immediately after
pressing one of the buttons.
Selecting via track list The track list contains all tracks in the cur
-
rent folder. Only one track can be viewed
at a time.
Selecting a track
iForward skipping:

The next track is played.Backward skipping:

If the track has been playing longer
than approx. 10 seconds, the system
skips back to the beginning of the
track.

If less than 10 seconds have played,
the system skips back to the beginning
of the previous track.