2008 MERCEDES-BENZ CLK550 AUX

215 Controls in detail
Audio system
ItemPage
1CD changer mode selector
AUX mode selector229
219
2Single CD mode selector 231
3Radio mode selector
4Mute function (radio)224
Pause (CD)235
5Volume distribution218
6Sound settings216
7Display
8Alphanumeric keypad
ItemPage
9Speed dialing memory (tele-
phone) in descending order
aAccepting a call
(telephone)240
bTelephone mode selector236
cSpeed dialing memory (tele-
phone) in ascending order237
dTerminating a call
(telephone)241
eCD slot
fCD ejection232
ItemPage
gSoft keys216
hVolume216
jSwitching on/off216
kManual tuning / seek
tuning (radio)222
Track search, reverse (CD)234
lManual tuning / seek
tuning (radio)222
Track search,
fast forward (CD)234

217 Controls in detail
Audio system
Press + or– soft key to increase or de-
crease tone level accordingly.
or
Press RES soft key briefly to reset bass
tones to their center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.
Adjusting treble
Press O button repeatedly until
TREBLE appears in the display.
Press + or– soft key to increase or de-
crease tone level accordingly.
or
Press RES soft key briefly to reset treble
tones to their center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.
Sound system*
You can either program the sound settings
manually (
page 216) or choose settings
via preset sound characteristics.
You can select from among the following
settings:

STANDARD: conventional stereo sound.

SURROUND: the sound is set for better
three-dimensional acoustic character-
istics.

SPEECH: the sound is optimized for the
spoken word.
Press O button repeatedly until
STANDARD, SURROUND or SPEECH appears
in the display.
Press X or Y soft key repeatedly
until the desired sound setting has
been reached.
The sound is set accordingly.
or
Press RES soft key briefly.
The sound setting is reset depending
on the sound source activated.

Radio mode: STANDARD

CD/AUX mode: SURROUND

Telephone: SPEECH
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.

218 Controls in detail
Audio system
Returning sound functions to factory
settings
Press O button to call up settings
menu in the display.
Press RES soft key briefly; the respec-
tive sound function is reset to its center
level.
or
Press and hold RES soft key until RESET
appears in the display.
The sound settings for bass and treble
are returned to their center level and
the volume is set to a predefined level.
Vehicles with sound system*:
The sound setting is reset depending
on the sound source activated.

Radio mode: STANDARD

CD/AUX mode: SURROUND

Telephone: SPEECH
The radio switches back to the stan-
dard radio menu four seconds after the
last soft key is pressed.
Adjusting volume distribution
Call up fader and balance functions by
pressing the P button.
Fader
Press P button repeatedly until
FADER appears in the display.
Press V or W soft key.The volume is distributed accordingly
between the front and rear of the vehi-
cle.
or
Press RES soft key briefly.
The fader is reset to its center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.
Adjusting balance
Press P button repeatedly until
BALANCE appears in the display.

219 Controls in detail
Audio system
Press X or Y soft key.
The volume is distributed between the
left and right sides of the vehicle.
or
Press RES soft key briefly.
The balance is reset to its center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last button is pressed.
Returning volume distribution to facto-
ry settings
Press P button to call up settings
menu in the display.
Press RES soft key briefly; the respec-
tive volume distribution is reset to its
center (flat) level.
or
Press and hold RES soft key until RESET
appears in the display.
The volume distribution settings for
fader and balance are set to their cen-
ter level.
The radio switches back to the stan-
dard radio menu four seconds after the
last soft key is pressed.
Telephone* muting
If your vehicle equipment includes a
Mercedes-Benz specified mobile phone*,
you can adjust its volume separately from
the volume of the audio system while the
telephone is being used.Connecting an external audio source
(AUX) to the radio
An external audio source (AUX) can be
connected to the audio system. The
cinch-connector for connecting the exter-
nal audio source (AUX) is located in the
glove box. Please contact an authorized
Mercedes-Benz Center for more informa-
tion.
1External audio source (AUX)
cinch-connector

220 Controls in detail
Audio system
Calling up AUX mode
Press and hold Q button until AUX
appears in the display.
The device connected with the external
audio source cinch-connector is heard,
provided it is switched to playback.
You can adjust the volume (
page 216),
the sound settings (
page 216) and the
volume distribution (
page 218) for the
AUX input.
The following settings can be made in the
audio AUX mode:

Volume (page 216)

Sound settings (page 216)

Volume distribution (page 218)Canceling AUX mode
Press any audio source button.
The AUX mode is canceled.
Warning!G
Only operate an external audio source (AUX)
when the vehicle is stationary. There is a risk
of accident by being distracted from road
and traffic conditions if you operate an ex-
ternal audio source (AUX) while the vehicle
is in motion.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is
covering a distance of 44 feet
(approximately 14 m) every second.
Warning!G
Due to the different volumes of the external
audio sources, system messages (e.g. traffic
and navigation announcements) may be
much louder. You may need to disable these
system messages or adjust the volume of
these messages manually.
iPlease refer to the relevant manufacturers
operating instruction for the external audio
source device.
iThe volume of external audio sources is ex-
tremely variable. It is possible that a device con-
nected as an external audio source will sound
quieter or louder in the vehicle or that the usual
maximum volume cannot be achieved. On cer-
tain devices the volume can be set separately. In
this case, start at a moderate volume and in-
crease it slowly. In this way, you can determine
whether the system is capable of playback with-
out distortion, even at high volume.

285 Controls in detail
Useful features
Useful features
Storage compartments Glove box
1Glove box lid
2Glove box lid release
Opening the glove box
Pull glove box lid release2.
The glove box lid1 opens downward.
Closing the glove box
Push glove box lid1 up to close.Storage compartment in the dashboard
1Cover
Opening storage box
Push cover1.
The storage box opens automatically.
Closing storage box
Push the storage box back until it
engages.
Warning!G
Do not store any flammable substances in-
side the vehicle or in the trunk. Otherwise
the flammable substances could ignite and
start a fire inside the vehicle.
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when storing objects in the vehicle. Put lug-
gage or cargo in the trunk if possible. Do not
pile luggage or cargo higher than the seat
backs.
Parcel nets cannot secure hard or heavy
objects.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
an accident.
iAudio system/COMAND* with CD chang-
er*: The CD changer and the AUX-socket are
located in the glove box.

291 Controls in detail
Useful features
Power outlet in the rear passenger
compartment
1Power outlet
2Cover
Switch on the ignition (page 38).
Pull at top of cover2.
Flip cover1 to the left and insert
electrical plug (cigarette lighter type).
Floormats*
Removing
Pull floormats off of retainer pins2 in
the direction of arrow1.
Remove the floormats.
Installing
Lay down the floormat.
Press the floormat eyelets4 onto re-
tainer pins5 in the direction of
arrow3.
iThe power outlet can be used to
accommodate electrical consumers (e.g. air
pump, auxiliary lamps) up to a maximum
of 180 W.
Warning!G
Whenever you are using floormats, make
sure there is enough clearance and that the
floormats are securely fastened.
Floormats should always be securely fas-
tened using eyelets4 and retainer pins5.
Before driving off, check that the floormats
are securely in place and adjust them if nec-
essary. A loose floormat could slip and
hinder proper functioning of the pedals.
Do not place several floormats on top of
each other as this may impair pedal move-
ment.
iTo install or remove the floormat more easi-
ly, move the driver’s seat or front passenger seat
as far to the rear as possible (
page 42).

317 Operation
Driving instructions
Standing waterPassenger compartment
Driving abroad
Abroad, there is an extensive
Mercedes-Benz service network at your
disposal. If you plan to drive into areas
which are not listed in the index of your
Mercedes-Benz Center directory, you
should request pertinent information from
an authorized Mercedes-Benz Center.Control and operation of radio trans-
mitters
COMAND*, radio and telephone*
!Do not drive through flooded areas or water
of unknown depth. Before driving through water,
determine its depth. Never accelerate before
driving into water. The bow wave could force wa-
ter into the engine and auxiliary equipment, thus
damaging them.
If you must drive through standing water, drive
slowly to prevent water from entering the pas-
senger compartment or the engine compart-
ment. Water in these areas could cause damage
to electrical components or wiring of the engine
or transmission, or could result in water being in-
gested by the engine through the air intake,
causing severe internal engine damage. Any
such damage is not covered by the
Mercedes-Benz Limited Warranty.
Warning!G
Always fasten items being carried as
securely as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
The trunk is the preferred place to carry
objects.
Warning!G
Please do not forget that your primary re-
sponsibility is to drive the vehicle safely.
Only operate the COMAND (Cockpit Man-
agement and Data System), radio or tele-
phone
1 if road, weather 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.