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151 Audio system
Te ch n i c a 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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152 Audio system
Te ch n i c a 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. 
     
        
        Page 156 of 354

153 Audio system
Te ch n i c a 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.
1Optional equipment 
     
        
        Page 157 of 354
154 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power windows
Power window switches located on center console
Switches for:
1left, front
2left, rear
3right, front
4right, rear
5Switch for rear door window overridePower window switches located in rear doors
6Individual switches (rear doors)
Turn electronic key in steering lock to position 1 or 2.
Press switch in to resistance point:
kto open
jto close
Release switch when window is in desired position.
152
43
P54.25-2119-26 
     
        
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155 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Express opening and closing
Press switch k or j past resistance point and 
release — window opens or closes completely. 
To interrupt procedure, briefly press k or j.
If the upward movement of the window is blocked 
during the closing procedure, the window will stop and 
open slightly. 
When pressing and holding the switch j to close the 
window, and upward movement of the window is 
blocked by some obstruction including but not limited to 
arms, hands, fingers etc., the automatic reversal will not 
operate.Blocking of rear door window operation
If no operation of the rear windows by switch (6) (for 
instance by children) is desired, slide override 
switch (5) to right, symbol N becomes visible, see 
page 154.
Wa r n i n g !
When leaving the vehicle, always remove the 
electronic key from the steering lock and lock the 
vehicle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment can cause 
an accident and/or serious personal injury.
Wa r n i n g !
When closing the windows, be sure that there is no 
danger of anyone being harmed by the closing 
procedure.The closing of the door windows can be 
immediately halted by releasing the switch or, if 
switch was pressed past the resistance point and 
released, by either pressing switch j or k.
If the window encounters an obstruction that 
blocks its path in a circumstance where you 
pressed the switch past the resistance point and 
released it to close the window, the automatic 
reversal function will stop the window and open it 
slightly.  
     
        
        Page 160 of 354

157 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Sliding / pop-up roof (optional for USA)
1to slide roof open
Push to open half-way, push again to open fully.
2to slide roof closed
3to raise roof at rear
4to lower roof at rear
Turn electronic key in steering lock to position 1 or 2, 
see page 200.To open, close, raise or lower the sliding/pop-up roof: 
Move switch to resistance point in the required 
direction.
Release the switch when the roof has reached the 
required position.
The switch is illuminated when the exterior lamps are 
switched on (except standing lamps).
P68.00-2100-26
1
2
34
Wa r n i n g !
When closing the sliding / pop-up roof, be sure that 
there is no danger of anyone being harmed by the 
closing procedure.The closing procedure can be immediately reversed 
by either moving the switch in direction (1) or (3), 
or pressing button Œ on the remote control, and 
holding it.When leaving the vehicle, always remove the 
electronic key from steering lock, and lock your 
vehicle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment can cause 
an accident and/or serious personal injury. 
     
        
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158 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
With the roof closed or tilted open, a screen can be slid 
into the roof opening to guard against sun rays. When 
sliding the roof open, the screen will also retract.
Express opening of sliding / pop-up roof
Move switch past resistance point and release — the 
sliding / pop-up roof slides open half-way. Move again to 
open fully.
To interrupt procedure, briefly move switch in any 
direction.Synchronizing sliding / pop-up roof
If the power supply was interrupted (battery 
disconnected or low), or if the sliding/pop-up roof is 
blocked during closing/opening procedure, the system 
has to be synchronized.
To do so, turn electronic key in steering lock to 
position 2, move and hold switch in direction (3) until 
the sliding/pop-up roof is completely raised at rear, and 
hold for additional 1 second.
Notes:
The sliding / pop-up roof can be opened or closed 
manually should an electrical malfunction occur, see 
page 307.
The sliding / pop-up roof can also be opened and closed 
using the summer opening/convenience future, see 
page 30. 
     
        
        Page 162 of 354

159 Interior equipment
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Interior lighting
1Automatic interior lighting
Press once and the interior lighting is activated.
Interiors lamps are switched on, and off (soft fade) 
delayed, when unlocking or locking the vehicle, or 
when opening or closing a door. However, there will 
be no (soft fade) delay when the electronic key is in 
steering lock position 2.
Press again and interior lamps remain switched off, 
even when centrally unlocking or opening a door.2Press to switch interior and reading lamps on or off.
3Press to switch rear passenger compartment lamp 
(including reading lamps) on or off.
4Press to switch reading lamp on or off.
Notes:
To prevent the vehicle battery from being discharged, 
with reading lamps switched on manually and 
electronic key in steering lock position 0 or removed, 
the reading lamps go out after approximately 30 
minutes.
Entrance lamps, exit lamps in doors
The lamps are switched on and off by the door contact 
switches.
Notes:
To prevent the vehicle battery from being discharged, 
with doors open all interior lamps go out after 
approximately 5 minutes.