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Audio system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Telephone operation
Various functions of the Mercedes-Benz integrated
cellular telephone
1 can be performed and displayed via
the car radio. Further instructions for operating the car
telephone can be found in the operation guide for the
cellular telephone1.
Switching the telephone on and off
Switching on: Press the
button, “TEL” appears in the
corner of the display.
Switching off: Press and hold
the button until the telephone symbol “TEL” no
longer appears in the display, or press the “PWR” button
on the phone’s keypad.
1 Optional equipment
Entering telephone number and starting dialing
process
Enter the desired telephone
number using the alpha-
numeric keypad. The number
can have up to 32 digits, but
only 13 of these can be
displayed. The dialing process is started by pressing the
SND button. The entered number can be corrected using
the “CLR” key.
Press the CLR key briefly -
and the last digit will be
deleted.
Press the CLR key longer - and
the complete number will be deleted.
Calling up the phone book
The numbers stored in the telephone memory can be
called up via either name or number entries. The
memory contents from the portable phone must be
downloaded and the telephone menu must be selected
in order to call up the phone book. Refer to the
“Memory download” section of the cellular telephone
operation guide for more information.
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Audio system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Switching between name search and number search
Press ABC key - Name search
Press NUM key - Number search
Searching and selecting phone book entries by name
Press the ABC key. The current name is shown on the
display. The stored entries in alphabetical order can be
selected using the or button. By pressing the
or buttons, the stored entries can be selected
according to alphabetical initial letters (e.g. A-Adam,
B-Brown, M-Miller).
Searching and selecting phone book entries by
number
Press the NUM key. The current number is shown on
the display. The stored entries can be selected in
numerical order using the or button. By
pressing the or buttons, the stored entries
can be selected in increments of 5 (e.g. Entry no. 2,
Entry no. 7, etc.).Placing a call
When a number or a name
has been selected using the
method described above,
press the SND key.
Manual repeat dialing (redial)
The last number entered can be re-selected by pressing
the SND key once and the call can be placed by pressing
the SND key a second time. The last dialed telephone
number is shown on the display. Using the , ,
or button, the numbers stored in the re-dial
memory of the telephone can be selected.
The abbreviation L and the
number in the memory are
shown in the top line of the
display.
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Audio system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Accepting incoming call in telephone mode
With an incoming call, the ringing tone will be heard
and the message “CALL” appears in the display. Press
the SND key to answer the call.
Accepting incoming call in tape, CD or radio mode
If the telephone is activated in the background
(telephone symbol in the display), then a switch is made
automatically to telephone when an incoming call is
received. The audio source is muted, the ringing tone is
heard and the message “CALL” appears. After the call
has been terminated, the previously selected audio
source is resumed.
Terminating call
A current call can be terminated by pressing the END
key.Component malfunctions
The radio, CD changer
1, and Mercedes-Benz integrated
cellular telephone
1 are part of a fiberoptic networked
system. Failure of one of the components can lead to
malfunctions of the other components. Please contact
your authorized Mercedes-Benz Center or call
1-800-FOR-MERCedes for more information in the event
of a malfunction.
1 Optional equipment
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Page 153 of 323

Telephone
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Telephone, generalCellular telephone
The vehicle is prepared for the installation of a cellular
telephone. For further information and installation
contact your authorized Mercedes-Benz Center.
Warning!
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 recommend that you
pull over to a safe location and stop before placing
or taking a telephone call. If you choose to use the
telephone while driving, please use the hands-free
device and only use the telephone when road 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 approximately 50 feet (approximately
14 m ) e ve r y s e c o n d . Never operate radio transmitters equipped with a
built-in or attached antenna (i.e. without being
connected to an external antenna) from inside the
vehicle while the engine is running. Doing so could
lead to a malfunction of the vehicle’s electronic
system, possibly resulting in an accident and
personal injury.
Wa r n i n g !
Some jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle. Whether
or not prohibited by law, for safety reasons, the
driver should not use the cellular telephone while
the vehicle is in motion. Stop the vehicle in a safe
location before answering or placing a call.
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Control and operation of radio transmitters
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Control and operation of radio transmitters
COMAND, radio and telephone
1 Observe all legal requirements.
Telephones and two-way radio
Radio transmitters, such as a portable telephone or a
citizens band unit should only be used inside the
vehicle if they are connected to an antenna that is
installed on the outside of the vehicle.
Refer to the radio transmitter operation instructions
regarding use of an external antenna.
Warning!
Please do not forget that your primary
responsibility is to drive the vehicle. Only operate
the COMAND (Cockpit Management and Data
System), radio or telephone
1 if road 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 approximately 50 feet (approximately
14 m ) e ve r y s e c o n d .
Wa r n i n g !
Never operate radio transmitters equipped with a
built-in or attached antenna (i.e. without being
connected to an external antenna) from inside the
vehicle while the engine is running. Doing so could
lead to a malfunction of the vehicle’s electronic
system, possibly resulting in an accident and
personal injury.
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Tele Aid
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The Tele Aid system is available if:
•it has been activated and is operational. Activation
requires a subscription for monitoring services and
cellular air time,
•the relevant cellular phone network and GPS signals
are available and pass the information on to the
response center.
Note:
Location of the vehicle on a map is possible if the
vehicle is able to receive signals from the GPS satellite
network and pass the information on to the response
center.Initiating an emergency call manually
Manually:Briefly press on cover (1) – the cover will open.
Press the SOS button (2) briefly (for longer than
2 seconds). The indicator lamp in the SOS button (2)
will flash until the emergency call is concluded. Wait for
a voice connection to the Response Center.
P82.95-2114-26
2
1
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Tele Aid
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Should a higher priority call be initiated while you are
connected, an upgrade (alternating) tone will be heard,
and the appropriate indicator lamp will flash. If certain
information such as vehicle identification number or
client information is not available, the operator may
need to retransmit. During this time you will hear a
chirp and voice contact will be interrupted. Voice
contact will resume once the retransmission is
completed. Once a call is concluded, a chirp will be
heard and the appropriate indicator lamp will stop
flashing. The COMAND system operation will resume
(only vehicles with COMAND).
Important!
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 Client Assistance at
1-800-FOR-MERCedes (1-800-367-6372) in the USA or
Customer Service at 1-800-387-0100 in Canada.Notes:
The indicator lamp in the respective button f lashes until
the call is concluded. Calls can only be terminated by a
Response Center or Client Assistance Center
representative
.
When a Tele Aid call has been initiated, the audio
system or the COMAND system audio (only vehicles
with COMAND) is muted and the selected mode (radio,
tape or CD) pauses. The optional cellular phone (if
installed) switches off. If you must use this phone, the
vehicle must be parked. Disconnect the coiled cord and
place the call. The navigation system (if engaged) will
continue to run. The display in the instrument cluster is
available for use and spoken commands are only
available by pressing the RPT button on the COMAND
unit. A pop-up window will appear in the COMAND
display to indicate that a Tele Aid call is in progress.
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Engine compartment
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Checking engine oil level (CLK 320 shown)
1Oil dipstick
2Oil filler cap
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check engine oil level approximately 5 minutes after
stopping the engine, allowing for the oil to return to the
oil pan.Wipe oil dipstick clean prior to checking the engine oil
level. Fully insert dipstick in tube, and remove after
three seconds to obtain accurate reading.
Oil level must be between the
lower (min) and upper (max) mark of
the dipstick.
Fill quantity between upper and lower dipstick marking
level is approximately 2.1 US qt (2.0 l).
Do not overfill the engine.
Excessive oil must be drained
or siphoned. It could cause damage to engine and
catalytic converter not covered by the Mercedes-Benz
Limited Warranty.
See malfunction and warning messages on page222 if
an engine oil level display appears on the multifunction
display when the engine is running.
Note:
See page110for engine oil level indicator.
Mercedes-Benz
Mercedes-Benz
2
1
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