MERCEDES-BENZ SLK32AMG 2004 R171 Owner's Manual

111 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become acquainted with your
Mercedes-Benz car radio. They contain
useful tips and a detailed description of the
user functions.
Operating safety
Warning!
G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a stand-
still and operate the systems only when road
and traffic conditions permit. Always pay full
attention to traffic conditions first before
operating system controls while driving.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your car is cover-
ing a distance of approximately 50 feet (ap-
proximately 14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, cassette deck, CD changer*, tele-
phone* and voice control system* are inter-
connected. When one of the components is
not operational or has not been
removed / replaced properly, the function of
other components may be impaired.
This conditions might seriously impair the
operating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.

112 Controls in detailAudio systemOperating and display elements

113 Controls in detail
Audio system
Item
Page
1
Radio mode selector
116
2
Tuning
116
Fast forward / reverse
120, 124
3
CD mode selector*
123
4
Display panel
118
5
Alpha-numeric keypad
for station storage and
frequency entry
117
CD/Track access
123, 125
Telephone*
125
Item
Page
6
Function button
117, 125
7
Soft keys for radio band
selection
115
Tone controls
115
Scan tuning
117
Cassette eject
119
Cassette track select
119
Dolby
120
CD random/repeat
124
Item
Page
8
Tape mode selector
118
9
Telephone mode
selector
125
a
Seek tuning
117,
119, 124
b
On/off, volume
115

114 Controls in detailAudio systemAnti-theft system
If the power supply to the radio has been
interrupted,
CODE
will appear on the display
when it is next switched on. The radio will
only work after the five-digit code has been
entered using the buttons on the
right-hand control panel.The code number is shown on the Radio
Code Card, supplied with the radio.Entering the code number

Switch on the radio. CODE
will appear on the display.

Using the buttons on the alpha-numer-
ic keypad, enter the five digit code.

Confirm by pressing the
OK
key.
If an incorrect code has been entered and
confirmed,
CODE
will reappear on the dis-
play. The correct code must be entered
once again.
If an incorrect code is entered three times,
WAIT
will appear on the display and the ra-
dio will be locked out for about ten min-
utes.
!Never leave the Radio Code Card in the
vehicle. Keep it in a safe place.
iThe lock out time will only count down
if the radio is left switched on.

115 Controls in detail
Audio system
Button and soft key operation
In these instructions, the alpha-numeric
keypad (right side of radio face) and the
function buttons (left side of radio face)
are referred to as “buttons” and the four
keys under the display are referred to as
“soft keys”.Operation
Switching on and off
Press control knob a.
The radio is switched off when you turn the
key in the steering lock to position0 or re-
move it from the steering lock. The radio is
switched on again when you turn the key in
the steering lock to position1 or2.Adjusting the volume

Turn the control knob.
Turning the knob clockwise will in-
crease the volume, counterclockwise
will decrease the volume.
Audio functions
The AUD
key is used to select the BASS,
TREBLE and BALANCE functions. Settings
for bass and treble are stored separately
for the cassette and CD modes. Tone level
settings are identified by the vertical bars.
The center (flat) setting is shown by one
longer bar in the center of the display.Bass

Press the
AUD
key repeatedly until
BASS

appears in the display.
Treble

Press the
AUD
key repeatedly until
TRE-
BLE
appears in the display.

Press the + key to increase or the - key
to decrease the level.
iDo not press directly on the radio dis-
play face.
iThe radio can also be switched on even
if the key is not inserted in the steering
lock, but will switch itself off automati-
cally after one hour to conserve vehicle
battery power.

116 Controls in detailAudio systemBalance
Press the
AUD
key repeatedly until
BALANCE
appears in the display.

Press the
Lkey to move the sound to
the left speaker or the
Rkey to move
the sound to the right speaker.
Centering all audio functions

Push and hold down the
AUD
key.
All audio functions (bass, treble and
balance) are set to center or flat posi-
tions, and the volume is adjusted to a
pre-set level.
Radio mode
Selecting radio mode
Press b button.
Analog station frequencies
Selecting the band

Press the key located below the de-
sired band.
The band selected is shown in the top
line of the display.Manual tuning

Press either the d or c button.
Step-by-step tuning in ascending or de-
scending order of frequency will take
place.
The first three tuning steps will take place
without muting. The radio will then be mut-
ed and high-speed tuning will take place
until the button is released.iFM frequency band:
FM 87.7......107.9 MHz
AM frequency band:
MW (medium wave) 530......1 710 KHz

117 Controls in detail
Audio system
Seek tuning
Press either the f or e button.
The radio will tune to the next receiv-
able station.
Scan tuning

Press the
SC
key.
Each station with a strong signal on the
band selected will be tuned in for eight
seconds. The first scan will tune only
the stations with a high signal strength.
The second scan will tune every receiv-
able station.
By pressing either the d, c, f or
e buttons, or the
SC
key, the scan
mode can be cancelled.Station memory
Ten stations can be stored in the AM and
FM bands via the alpha-numeric keypad.
The “0” button corresponds to location 10.
Weatherband (WB) channels 1 to 7 can be
retrieved via the alpha-numeric keypad
and are preset at the factory.
Storing stations

Hold the number button down for ap-
proximately two seconds.
The currently displayed frequency is
stored on the selected station button.
The storage procedure is confirmed by
a short signal tone.
Retrieving a station from memory

Press the desired station button.Direct frequency input (AM and FM
only)

Select the band.

Press the “button and enter the
desired frequency using the
alpha-numeric keypad.
Frequencies outside of the frequency
ranges (frequencies specified
on (
page 116)) will not be accepted.
The frequency input mode is cancelled
if no button is pressed within four sec-
onds.

118 Controls in detailAudio systemCassette mode
Playing cassettes
Press the “TAPE” button.

Press the eject (EJ) key.
The display folds down and the cas-
sette slot becomes visible.

Push the cassette into the slot until it
engages.
The cassette will be pulled in automati-
cally.
The radio will switch to cassette mode.
Track 1 will be played and
SIDE 1
dis-
played. Track 1 is the side of the cassette
which is facing upwards. The cassette
deck will automatically detect the type of
tape and switch the equalization automati-
cally. A cassette symbol in the display indi-cates that a tape is in the mechanism. This
symbol appears in all modes but not in cas-
sette mode.
The cassette will not be ejected when the
radio is switched off or another mode is se-
lected.
If a cassette is in the mechanism, cassette
mode can be selected by using the “TAPE”
button. If no cassette has been inserted,
the display will show
NO TAPE
.
iDo not press directly on the radio dis-
play face.
Return the display panel to its normal
position by folding it back up and
pressing gently on the display frame to
lock in place.
When playing mono recorded tapes
(e.g. books) through a stereo system,
the sound from one track might bleed
to the other track, despite setting the
balance to the full left or full right
speakers.!If the display is in the down position for
more than 20 seconds, two successive
beeps will be heard. This will continue
at 5 second intervals until the display is
returned to its normal position.

119 Controls in detail
Audio system
Cassette eject
Press the eject (
EJ) key.
The display will fold down and the
cassette will be ejected.

Remove the cassette.

Fold the display back up manually.
The radio will switch back to radio
mode automatically.Track selection

Press the track selection (
TRK
) key.
The current track will be displayed as
SIDE 1
or
SIDE 2
. The track will be
changed automatically at the end of
the tape.
Track search forwards/backwards

Press the f button.SEEK FWD
will be shown on the display
and the track search will run the tape
forwards to the start of the next track.

Press the e button.SEEK RWD
will be shown on the display
and the track search will run the tape
backwards to the start of the track cur-
rently playing.

Press the same button again to inter-
rupt track search.
iThe cassette will not be ejected when
the radio is switched off.!If the display is in the down position for
more than 20 seconds, two successive
beeps will be heard. This will continue
at 5 second intervals until the display is
returned to its normal position.
iThe beginning of a track can only be lo-
cated if there is a break of at least four
seconds between tracks.

120 Controls in detailAudio systemFast forward/reverse
Press the d button.FORWARD
will appear on the display and
fast forward will start.

Press the c button.REWIND
will appear on the display and
fast reverse will start.

Press the same button again to stop
fast forward/reverse, or it will stop au-
tomatically at the beginning or the end
of the tape. The track will automatically
change at the end or beginning of the
tape and play will begin.Scanning

Press the
SC key.
Each track on the cassette will be
played for eight seconds in ascending
order.Dolby NR
1 (noise reduction system)
To enable optimum reproduction of cas-
settes recorded using the Dolby B system,
press the AUD
key followed by the
NR key.
NR is shown in the display in inversed-color
format. To turn off Dolby B noise reduc-
tion, press the
NR key again. The
NR in the
display will be shown in the original color
format.
iThe beginning of a track can only be lo-
cated if there is a break of at least four
seconds between tracks.
Scan will be interrupted if the d,
c, f, e buttons or the SC
key is pressed.
1Dolby and the double-D symbol Ù are trade-
marks of Dolby Laboratories Licensing Corpora-
tion. The Dolby noise reduction system is
manufactured under license from Dolby Laborato-
ries Licensing Corporation.