2008 MERCEDES-BENZ CLK550 Radio

227 Controls in detail
Audio system
Accessing via number keys
Enter number of preset you wish to se-
lect, e.g. 1.
The radio plays the station stored un-
der this number and the PTY function
changes to the category corresponding
to the station.
Tuning via manual channel input
Example: tuning in channel 16
Press *.
Input line appears in the main radio
menu.
Use number keys to enter desired
channel within eight seconds,
e.g.1 6.The system tunes to channel 16.
The station you have selected begins to
play.
Tuning via the program category list
The category list contains all currently re-
ceivable categories of programs. It is
arranged alphabetically.

Selecting a category
Press PTY soft key.
The current PTY category of the sta-
tion is displayed.
Press <<< or >>> soft key.
This switches between the individu-
al categories.
When changing the category, the chan-
nel selected last in the new category
becomes audible.
The system will automatically switch to
a station of the selected category if the
currently selected station is not of the
selected category. Otherwise, the cur-
rently selected station remains tuned.

Tuning a station within the selected
category
The channels identified for the current-
ly selected category are arranged
numerically. Only one entry is visible at
a time.
Press S or T button briefly.
The next station within the category
is started.
or
iYou can only enter available channel num-
bers.


228 Controls in detail
Audio system
Press and hold S or T but-
ton for approximately three sec-
onds until desired station has been
reached.
Tuning via scan search
Scan search is characterized as follows:

Scan search plays a channel for ap-
proximately eight seconds and then
skips to the next channel within the
current category.

Scan search can be terminated manu-
ally.
Press SC soft key.
The search starts. SC appears in the
display.
Press SC soft key again.
The search stops.Obtaining additional text information
Additional text information (artist, title) re-
lated to the current channel can be dis-
played.
Press INF soft key.
The title being played is displayed.
Press INF soft key again.
The name of the artist performing the
title being played is displayed.
Storing stations
Tune in desired station.
Press and hold desired station button
1 to R until a brief signal tone is
heard.
The frequency is stored on the selected
station button.The radio saves the current station at
the memory preset selected. The mem-
ory preset selected appears in the sta-
tus line, e.g. S3.
Calling up the ESN information menu
Press INF soft key.
Press ESN soft key.
The twelve-digit electronic serial num-
ber (ESN) of the SAT tuner* installed in
your vehicle is displayed.
Press RET soft key to exit the menu.
iIf a button is not pressed within
four seconds, the radio will return to the stan-
dard display.
iThere are ten presets available.
An existing entry is overwritten in the memory
list when a new entry is given.


239 Controls in detail
Audio system
When you have selected a number,
press s button.
The call will be made.

Viewing the telephone number of a
telephone book entry
Search for desired entry.
Press NUM soft key.
The telephone number of the phone
book entry appears in the display.

Returning calls received
Press MEM soft key or press ‚
orƒ.
Press RCV soft key (received calls).
The number of received calls and
then the call last received appear
briefly in the display.
Select desired telephone number
with button ‚orƒ.
The letter
R and the number of the
memory position appear in the up-
per left-hand corner of the display.
The numbers are stored in the order
of the calls received.
When you have selected a number,
press s button.
The call will be made.

Speed dial
If you have stored telephone numbers
as speed dial numbers in your tele-
phone, you can also enter these with
buttons 1 to R on the radio
head unit.
Press desired button 1 to R
briefly.
Press s button.
The call will be made.

Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your tele-
phone, you can also enter these with
buttons 1 to R on the radio
head unit.
Press desired button 1 to R
until the call is made.

245 Controls in detail
Audio system
When you have selected a number,
press s button.
The call will be made.

Viewing the telephone number of a
phone book entry
Search for desired entry.
Press NUM soft key.
The telephone number of the phone
book entry appears in the display.

Returning calls received
Press MEM soft key or press ‚
orƒ.
Press RCV soft key (received calls).
The number of received calls and
then the call last received appear
briefly in the display.
Select desired telephone number
with button ‚orƒ.
The letter
R and the number of the
memory position appear in the up-
per left-hand corner of the display.
The numbers are stored in the order
of the calls received.
When you have selected a number,
press s button.
The call will be made.

Speed dial
If you have stored telephone numbers
as speed dial numbers in your tele-
phone, you can also enter these with
buttons 1 to R on the radio unit.
Press desired button 1 to R
briefly.
Press s button.
The call will be made.

Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your tele-
phone, you can also enter these with
buttons 1 to R on the radio unit.
Press desired button 1 to R
until the call is made.
iSeveral sub-entries can be stored for each
main entry (name). These entries are marked by
a corresponding abbreviation that appears in the
upper left-hand corner of the display. The follow-
ing abbreviations for sub-entries are possible:
CEL = Mobile phone
HOM = Home
WOR = Work
FAX = Fax
PAG = Pager
TEL = Main

274 Controls in detail
Driving systems
Switching the Parktronic system
on/off
The Parktronic system can be switched off
manually.
The Parktronic switch is located in the up-
per part of the center console.
1Parktronic switch
2Indicator lamp
Switching off the Parktronic system
Press Parktronic switch1.
Indicator lamp2 comes on.Switching on the Parktronic system
Press Parktronic switch1 again.
Indicator lamp2 goes out.
Parktronic system malfunction
If only the red distance segments illumi-
nate and a acoustic warning sounds,
there is a malfunction in the Parktronic
system. The Parktronic system will auto-
matically switch off after 20 seconds and
the indicator lamp in the Parktronic switch
comes on.
Have the Parktronic system checked at
an authorized Mercedes-Benz Center
as soon as possible.If only the red distance segments illumi-
nate and no acoustic warning sounds, the
Parktronic system sensors are dirty or
there is an interference from other radio or
ultrasonic signals. The Parktronic system
will automatically switch off after 20 sec-
onds and the indicator lamp in the Park-
tronic switch comes on.
Switch off the ignition (page 38).
Clean the Parktronic system sensors
(
page 372).
Switch on the ignition.
or
Check the Parktronic system operation
at another location to rule out interfer-
ence from outside radio or ultrasonic
signals.
iThe Parktronic system is automatically
switched on when the ignition is switched on
(
page 38).

292 Controls in detail
Useful features
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Center for informa-
tion on the installation of an approved
external antenna. Refer to the radio trans-
mitter operation instructions regarding use
of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone us-
ing the following devices:

mobile phone keypad

COMAND* (see separate operating in-
structions)

buttonss andt on the multi-
function steering wheel (
page 142)

audio system (page 236)
Warning!G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.
Warning!G
Please do not forget that your primary re-
sponsibility 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 rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Only operate the COMAND*
1 if 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
(approximately 14 m) every second.
1Observe all legal requirements.
iVarious mobile phone cradles can be in-
stalled in the front center armrest, see separate
installation instructions for the mobile phone
cradle. These mobile phone cradles can be ob-
tained from an authorized Mercedes-Benz
Center.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using. See also separate operating manual for in-
structions on how to use your mobile phone.

300 Controls in detail
Useful features
Call priority
If other service calls such as a Roadside
Assistance call or Information call are ac-
tive, an Emergency call is still possible. In
this case, the Emergency call will take pri-
ority and override all other active calls.Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. SmartKey inside vehicle),
and the reserve SmartKey is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.
Then return to your vehicle and pull the
trunk recessed handle for a minimum
of 20 seconds until the SOS button is
flashing.
The message
Connecting Call
appears in the multifunction display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your acquaintance call.
The Response Center will then unlock your
vehicle with the remote door unlocking
feature.
iThe indicator lamp in the respective button
flashes until the call is concluded. Calls can only
be terminated by a Response Center or Custom-
er Assistance Center representative except
Roadside Assistance and Information calls,
which can also be terminated by pressing
buttonton the multifunction steering wheel
or the respective button for ending a telephone
call on the audio system or the COMAND* head
unit.
!If the indicator lamp continues to flash or
the system does not reset, contact the Response
Center at 1-800-756-9018 (in the USA), or
1-888-923-8367 (in Canada), or Mercedes-Benz
Customer Assistance at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA, or Customer Ser-
vice at 1-800-387-0100 in Canada.
iWhen a Tele Aid call has been initiated, the
audio system or the COMAND* system audio is
muted and the selected mode (radio or CD)
pauses. The optional cellular phone (if installed)
switches off. If you must use this phone, the ve-
hicle must be parked. Disconnect the coiled cord
and place the call. The COMAND* navigation
system (if engaged) will continue to run. The dis-
play in the instrument cluster is available for use,
and spoken commands are only available by
pressing the RPT button on the COMAND* head
unit. A pop-up window will appear in the
COMAND* display to indicate that a Tele Aid call
is in progress.

304 Controls in detail
Useful features
Rolling code programming
To train a garage door opener (or other
rolling code devices) with the rolling code
feature, follow these instructions after
completing the “Programming” portion
(steps 1 through 6) of this text. (A second
person may make the following training
procedures quicker and easier.)
Step 8:
Locate “training” button on the garage
door opener motor head unit.
Exact location and color of the button
may vary by garage door opener brand.
Depending on manufacturer, the
“training” button may also be referred
to as “learn” or “smart” button. If there
is difficulty locating the transmitting
button, refer to the garage door opener
Operator’s Manual.
Step 9:
Press the “training” button on the ga-
rage door opener motor head unit.
The “training light” is activated.You have 30 seconds to initiate the
following step.
Step 10:
Return to the vehicle and firmly press,
hold for 2 seconds and release the pro-
grammed signal transmitter button
(2, 3 or4).
Step 11:
Press, hold for 2 seconds and release
same signal transmitter button a sec-
ond time to complete the training
process.Step 12:
Confirm the garage door operation by
pressing the programmed signal trans-
mitter button (2, 3 or4).
Step 13:
To program the remaining two signal
transmitter buttons, repeat the steps
above starting with step 3.
Gate operator/Canadian programming
Canadian radio-frequency laws require
transmitter signals to “time-out” (or quit)
after several seconds of transmission
which may not be long enough for the
integrated signal transmitter to pick up the
signal during programming. Similar to this
Canadian law, some U.S. gate operators
are designed to “time-out” in the same
manner.
If you live in Canada or if you are having
difficulties programming a gate operator
(regardless of where you live) by using the
programming procedures, replace step 4
with the following:
iSome garage door openers (or other rolling
code equipped devices) may require you to
press, hold for 2 seconds and release the same
signal transmitter button a third time to com-
plete the training process.