Page 144 of 417

143 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become familiar with your
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description
of the user functions.
Operating safety
Location of the audio system
The audio system control panel is located
behind a cover in the upper part of the cen-
ter console.
1Cover
Briefly press on the lower part of
cover1.
The cover opens automatically.
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 system 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 44 feet (approximately
14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer and
telephone are interconnected. When one of
the components is not operational or has
not been removed/replaced properly, the
function of other components may be im-
paired.
This condition 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.
Page 154 of 417

153 Controls in detail
Audio system
Track selection
Press the
TRK
key.
The current track will be displayed as
SIDE 1
or
SIDE 2
.
You can switch sides at any time.
The side will be changed automatically
at the end of the tape.Cassette eject
Press eject button3.
The display folds down and the cas-
sette is ejected. The system will switch
back to radio mode automatically.
Fold display panel back up and press
gently on the display panel frame to
lock it.Track search
Track search forward
Pressf button.SEEK FWD
will appear in the display.
Track search will run the tape forward
to the start of the next track and switch
to Play.
iA warning signal will sound after 20
seconds if the display panel is left in
the down position. Fold display panel
back up. If the display panel is not
closed, a warning signal will sound and
the radio will be muted.
!Do not press directly on the display
face. Otherwise the display will be
damaged.iThe cassette will not be ejected when
the system is switched off or switched
to another operating mode.
iThe beginning of a track can only be
found if there is pause of at least
four seconds between tracks.
Page 157 of 417

156 Controls in detailAudio systemCD changer operation
General notes
Should excessively high temperatures oc-
cur while in CD mode,
CD TEMP HIGH
will
appear on the display and the CD will be
muted. The unit will then switch back to
the last operating mode used until the tem-
perature has decreased to a safe operating
level.
Should excessively low temperatures oc-
cur while in CD mode,
CD TEMP LOW
will ap-
pear on the display, but the CD will
continue to play.
Handle CDs carefully to prevent interfer-
ence during playback. Avoid fingerprints
and dust on CDs. Do not write on CDs or
apply any labels or other material to them.Only use original CDs. Using copied CDs
may create problems during playback.
Clean CDs from time to time with a com-
mercially available cleaning cloth. Do not
use solvents, anti-static sprays, etc. for
cleaning. Replace the CD in its case after
use. Protect CDs from heat and direct sun-
light.
Only use CDs, which bear the label shown
and that conform to the compact disc
digital audio standard (IEC 60908). You
can therefore only use CDs with a maxi-
mum thickness of 1.3 mm.
iUse of CDs which do not meet this
standard may cause damage to the CD
changer. Do not play single-CDs
(80 mm) with an adapter.
Your CD drive has been designed to
play CDs which correspond to the
EN 60908 standard.
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 cannot be ejected and
will damage the drive.Warning!
G
The CD changer is a Class 1 laser product.
There is a danger of invisible laser radiation
if the cover is opened or damaged.
Do not remove the cover. The CD changer
does not contain any parts which can be ser-
viced by the user. For safety reasons, have
any service work which may be necessary
performed only by qualified personnel.
Page 161 of 417

160 Controls in detailAudio systemTelephone operationVarious car telephone functions and oper-
ating steps for the car telephone can be
performed and displayed via the audio sys-
tem.
Further operating instructions not covered
here can be found in the operating
instructions for the multifunction steering
wheel and the telephone.
Switching on the telephone
Pressh button.
If you have programmed an unlock
code for the telephone, you must enter
the code now.
Enter the code using buttons4
toM.
If necessary, correct number entered
with the
CLR
key. Press key briefly to
delete the last digit entered; press key
and hold to delete the complete num-
ber.
Press the
OK key after entering correct
code.
The telephone is unlocked. If you have
entered the wrong code, you must re-
peat the entering procedure with the
correct code.
Switching off the telephone
Pressh button repeatedly until PHONE OFF
appears in the display.
The receiving symbol in the display
disappears.
Adjusting the volume
Turn control knoba during tele-
phone operation.
The volume increases or decreases de-
pending on the direction in which the
knob is turned.
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
cellular telephone while driving a vehicle.
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.
iThe volume can be adjusted separately
for the telephone and radio.
Page 165 of 417

164 Controls in detailAudio systemQuick-dialing
Press one of the desired number
buttons4 toM longer than one
second.
The telephone number saved under
that number will be dialed.Emergency calls “911”
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone is inserted in the phone cra-
dle. Unless otherwise specified, the de-
scriptions refer to the audio system head
unit.
Consult the separate telephone operating
instructions that came with your mobile
phone for information on how to place a
“911” emergency call on the mobile
phone. The following conditions must be met for a
“911” emergency call:
Telephone must be switched on.
The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures
yourself.
!Please be aware that button4
might already be reserved for an emer-
gency call number.
Warning!
G
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.
iEmergency calls may not be possible
with all telephone networks or if certain
network services and/or telephone
functions are active. Check with your
local service providers.
Page 169 of 417

168 Controls in detailAutomatic transmissionAn additional indication of the current gear
selector lever position can be found on the
cover of the shifting-gate.When the gear selector lever is in
positionD, you can influence transmission
shifting by
limiting the shift range
changing gears manually
One-touch gearshifting
Even with an automatic transmission you
can change the gears manually when the
gear selector lever is in positionD.
Downshifting
Briefly press the gear selector lever to
the left in theD-direction.
The transmission will shift from the cur-
rent gear to the next lower gear. This
action simultaneously limits the gear
range of the transmission
(page 170).
Warning!
G
It is dangerous to shift the gear selector
lever out ofP orN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
Page 170 of 417

169 Controls in detail
Automatic transmission
Upshifting
Briefly press the gear selector lever to
the right in theD+direction.
The transmission will shift from the current
gear to the next higher gear as permitted
by the shift program. This action simul-
taneously extends the gear range of the
transmission.
Canceling gear range limit
Press and hold the gear selector lever
in theD+direction until
D reappears in
the right multifunction display.
The transmission will shift from the current
gear range directly to gear rangeD.Shifting into optimal gear range
Press and hold the gear selector lever
in theD-direction.
The transmission will automatically select
the gear range suited for optimal
acceleration and deceleration. This will
involve shifting down one or more gears.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.iTo avoid overrevving the engine when
the gear selector lever is moved to
theD-direction, the transmission will
not shift to a lower gear if the engine’s
max. speed would be exceeded.
Page 173 of 417

172 Controls in detailAutomatic transmission
!
Coasting the vehicle, or driving for any
other reason with gear selector lever
inN can result in transmission damage
that is not covered by the
Mercedes-Benz Limited Warranty.
Warning!
G
Getting out of your vehicle with the gear
selector lever not fully engaged in positionP
is dangerous. Also, positionP alone is not
intended to or capable of preventing your
vehicle from moving, possibly hitting people
or objects.
Always set the parking brake in addition to
shifting to positionP (
page 56).
When parked on an incline, turn the front
wheels towards the road curb.
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system, as these materials could be
ignited and cause a vehicle fire.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children
could move the gear selector lever from
positionP, which could result in an accident
and/or serious personal injury.