2008 MERCEDES-BENZ R-Class ECO mode

57 Audio
CD changer* operation

CD changer* operation
The CD changer* can play audio or MP3
CDs. When playing MP3 CDs, only the first
99 tracks will be played back in successive
order. After that, playback will begin with
track 1 of the MP3 CD. Folder selection is
not possible.
Multi session CDs include mixed file types
(e.g. MP3 and audio CD) in either succes-
sive or random order on the disc. Audio
tracks will be played back first, followed by
MP3 tracks until 99 tracks are reached.
Refer to additional MP3 information:
Permissible MP3 CDs (page 72)
Permissible file systems (page 72)
Permissible MP3 formats (page 73)
Permissible bit and scan rates
(
page 73)
Refer to additional CD information:
General information on CD operation
(
page 53)
Activate the CD changer* main menu
(
page 63).
or
Load a CD into the CD changer*
(
page 58) for M, GL and R-Class or
(
page 62) for CLK-Class.
Accessing the CD changer*
The CD changer* is located in the glove
box.
Open the glove box.
Press the chrome CDC button 1.
The CD changer* lowers and becomes
accessible.1CD changer* release button
2CD slot
3Magazine compartment buttons
Retracting the CD changer*
By hand, lift the CD changer* into the
stowed position.
A click is heard when fully retracted.
Switching to CD changer* mode
M, GL and R-Class CD changer*

60 Audio
CD changer* operation
Ejecting CDs
The following options are available:
Ejecting one CD
Ejecting all CDs (page 61)Ejecting one CD
1CD changer* release button
2CD slot
3Magazine compartment buttons
Access the CD changer* (page 57).
Briefly press the appropriate magazine
compartment button 3.
The button LED 3 flashes red. The CD
changer* ejects the CD.
Within 15 seconds, remove the CD
from the slot 2.
The CD will be pulled in again if it is not
removed from the slot within approx.
15 seconds. The system starts playing
the CD again.
The ejection process is completed.
Retract the CD changer* (page 57).i
If, for example, only compartments 1
through 4 are to be loaded instead of
all six compartments, simply do not
insert the fifth CD into the slot 2. The
CD changer* attempts to load the fifth
CD, yet aborts the loading procedure.
The system automatically plays the last
(fourth) CD.i
If you are listening to a CD in the CD
changer* and you eject another CD
from the changer:
While ejecting the CD, the system
interrupts CD playback.
The CD you were last listening to
starts from the beginning once the
ejection procedure is completed.
If you eject the CD you are currently
listening to:
The next available audio CD is
played.
If there are no other CDs available,
the system switches to the audio
source listened to before CD
changer* mode.

67 Audio
CD operation
With the number keypad
Activate the CD main menu
(
page 64).
Press *.
An input line will appear in the CD main
menu.
1Number of tracks on CD corresponds
with the valid number range
2Input line
E.g.: Track 14.
Press 1 and 4 in short succession.
After entering the track number, wait
approximately 3 seconds.
The selected track is played. The CD
main menu is displayed.
CD track scan
The tracks on a CD can be scanned one
after the other for 8 seconds each. The
function will switch off automatically when
the starting track is reached. You can also
manually stop the scan function.Activating
Press the Scan soft key.
Scan will begin.
i
Entries higher than the number of
tracks available on the CD are not
possible.
During MP3 CD playback
CD drive
You can select the tracks of the
current folder (
page 78).
CD changer*:
You can select the first 99 tracks of
a MP3 CD.
i
When you start the scan function, the
playback mode
Normal sequence
(
page 69) is automatically activated.

72 Audio
MP3 CD 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 cold, 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 systems
The permitted file system for COMAND is
ISO9660/Joliet for CD-R and CD-RW.
Multi session CDs
Multi session CDs include mixed file types
(e.g. MP3 and audio CD) in either
successive or random order on the disc. In
MP3 mode, COMAND will integrate audio
CD tracks into the disc’s folder structure.
The CD audio track folder will appear first
followed by folders containing MP3 tracks.
File structure
When creating a MP3 CD, you can organize
MP3 tracks into folders. A folder can also
contain additional folders.
A CD may have a maximum of 255 folders
in total.
A maximum of 255 tracks are permissible
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.
Track names and folder names
When 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:
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”.
Tips on caring for your MP3 CDs
Tips on creating MP3 CDs
i
CDs, software and hardware for writing
audio data to CDs vary widely.
Therefore, we cannot guarantee that
COMAND will be able to play every
user-written CD. Problems may also be
encountered during playback of user-
written CDs with a storage capacity of
more than 700 MB.

73 Audio
MP3 CD operation
A period must appear between the
track name and the file extension.
Example of a correct track name:
Track1.mp3
In the example, the track name
contains six characters, followed by a
period and the file extension “mp3”.
Empty folders or folders containing data
other than MP3 tracks will not be dis-
played by COMAND.
If MP3 or audio CD 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 formats
COMAND supports the MPEG1
AudioLayer3 format.
Permissible bit and scan rates
Fixed and variable bit rates up to 320
kbps
Scan rates from 24 kHz - 48 kHzThe music tracks that you can create for
play back in MP3 mode are generally
copyright-protected under applicable
international 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.
i
COMAND does not support ID3tags.
Tips on creating MP3 tracks
i
In everyday speech, this format has
been replaced by the designation
“MP3”.
i
It 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.
Tips on copyright

78 Audio
MP3 CD operation
Backward
Press d.
If the track has been playing for more
than approx. 10 seconds, the track is
replayed from the start. If the playing
time is shorter, the previous track is
played.
With the number keypad
The tracks of the current folder can be
selected with this function.
Activate the MP3 main menu
(
page 75).
In short succession, press button *
and the number key of the desired
track, e.g. 8.1Number of tracks in the current folder
(10 tracks)
After your entry the selected track is
played and visible.Using MP3 track scan
The tracks of the current folder can be
scanned one after the other for 8 seconds
each. Subfolders are not considered.
The function will switch off automatically
when the beginning track is reached.
You can also manually stop the scan
search.
Starting the scan search
Activate the MP3 main menu
(
page 75).
Press the Scan soft key.
i
If the current folder contains less than
10 tracks, the system will only
recognize the first digit entered and
play the appropriate track.
i
When you start the scan search, the
playback mode
Normal sequence
(page 80) is automatically activated.

80 Audio
MP3 CD operation
Changing the playback option
E.g.:
Option
CD mix
Activate the MP3 main menu
(
page 75).
Press the Setting soft key.
Setting menu
Push the joystick to g or G to
select the playback mode
CD mix.
Press E.
The option is activated. The MP3 main
menu will reappear.
Explanation of the playback options
Normal sequence (normal setting)
The tracks of the current folder are
played in order on the disc.
If the current folder contains sub-
folders:
The sub-folders and their tracks are
played in order on the disc.
CD mix
All tracks of the MP3 CD are played in
random order.
Repeat track
The system repeats the current track
until you switch the function off.
Repeat folder
The system repeats the tracks of the
current folder until you switch the
function off.
View track detail
At any time during playback an expanded
view of a track title can be displayed in the
MP3 CD main menu via a separate
window.
Press the Detail soft key.
To cancel
Press the Detail soft key again.
or
The window will automatically disappear in
approx. 5 seconds.
OptionSymbol
Function active_
Function not active-
i
After selecting, the following playback
options are displayed on the status bar.

96 Rear Audio/Video*
Rear Seat Entertainment (RSE) operation* (except CLK-Class)
An audio CD is loaded in the RSE CD/DVD
player and it is switched on.
Loading a CD (
page 93).
Switching on (
page 92).
Set the L/R monitor switch on the
remote to the side you wish to control.
Press on the remote.
The CD menu will appear on the
display. Playback begins with track 1.
CD menu
1CD mode
2Current track
3Current track number/max. track num-
ber on CD and elapsed playback time
Track select
Press g or G to play the next or
previous track.
or
Press H to play the next track.
Press G to play the previous track
or start of title (if more than 10
seconds of playing time has elapsed).
Playback begins.CD track scan
The tracks on a CD can be scanned one
after the other for 8 seconds each.
Starting the function
Turn the thumb wheel to highlight the
Scan soft key and press to select.
Scan will begin.
Ending the function
The function will switch off automatically
when the beginning track is reached.
or
Press the thumb wheel to select the
Scan soft key again if the scan search
is running.
Switching to CD mode
i
The name of the CD and the name of
the track played are displayed if the
information is available.