Page 153 of 399

150
Combination switch
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Blocked windshield wipers
If the windshield wipers become blocked (for example, 
due to snow), switch off the wipers.
For safety reasons before removing ice or snow, remove 
electronic key from starter switch. Remove blockage.
Activate combination switch again (electronic key in 
starter switch position 1).
Emergency operation of windshield wipers
In case of windshield wiper malfunction in switch 
positions I or III, turn combination switch to wiper 
setting II. Have the system checked at your authorized 
Mercedes-Benz Center as soon as possible. Windshield wipers smear
If the windshield wipers smear the windshield, even 
during rain, activate the washer system as often as 
necessary. The fluid in the washer reservoir should be 
mixed in the correct ratio.
See page 320 for instructions on filling up the 
windshield washer reservoir.
See page 356 for instructions on replacing wiper blade 
inserts.
Windshield and headlamp washer fluid mixing ratio
For temperatures above freezing:
MB Windshield Washer Concentrate “S” and water.
1 part “S” to 100 parts water
(40 ml “S” to 1 gallon water).
For temperature below freezing:
MB Windshield Washer Concentrate “S” and 
commercially available premixed windshield washer 
solvent / antifreeze
1 part “S” to 100 parts solvent
(40 ml “S” to 1 gallon solvent). 
         
        
        
     
        
        Page 154 of 399
151
Hazard warning flasher
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Hazard warning flasher switch
The hazard warning flasher can be activated either 
manually via the switch located in the dashboard, or it 
is activated automatically at the time an airbag is 
deployed.
To activate hazard warning flasher, press switch once. 
To deactivate, press switch again.
Note:
With the hazard warning flasher activated, the 
combination switch in position for either left or right 
turn, and the electronic key in starter switch position 1 
or 2, only the respective left or right side turn signals 
will operate. After turn signal cancellation, the hazard 
warning flasher is activated. 
         
        
        
     
        
        Page 162 of 399

159
Climate control
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Economy mode
The function of this setting corresponds to the 
automatic mode. However, because the air conditioning 
compressor will not engage (fuel savings), it is not 
possible to air condition in this setting.
Press 
S button to activate. The indicator lamp in the 
button illuminates. 
Press  S button once again to return to the previous 
setting. The indicator lamp in the button goes out.
Important!
In the  S mode the windows could fog up on the 
inside. Switch off S  mode.
Climate control - OFF/ON
To switch the climate control off, set the air volume 
control switch to position 0.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily, 
otherwise the windshield could fog up.
To switch the climate control on again, or set air volume 
control switch to any speed. Residual engine heat utilization
With the engine switched off, it is possible to continue 
to heat or ventilate the interior for a short while, 
dependent of the temperature setting of the automatic 
climate control. Air volume and distribution are 
controlled automatically.
To  s e l e c t :
Turn the electronic key in starter switch to position 1 
or 0 or remove it altogether.
Press button 
T. The indicator lamp in the button 
illuminates.
This function selection will not activate if the battery 
level is insufficient. 
The function switches off automatically:
• if the electronic key in starter switch is turned to 
position 2, 
• after approximately 30 minutes,
• if the battery voltage drops. 
         
        
        
     
        
        Page 172 of 399

169
Automatic climate control
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Economy mode
The function of this setting corresponds to the 
automatic mode. However, because the air conditioning 
compressor will not engage (fuel savings), it is not 
possible to air condition in this setting.
Press 
S button to activate. The indicator lamp in the 
button illuminates. 
Press  S button once again to return to the previous 
setting. The indicator lamp in the button goes out.
Important!
In the  S mode the windows could fog up on the 
inside. Switch off S  mode.
Automatic climate control - OFF/ON
To switch the automatic climate control off, set the air 
volume control switch to position 0.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily, 
otherwise the windshield could fog up. To switch the automatic climate control on again, press 
the 
U  or P button, or set air volume control 
switch to any speed.
Residual engine heat utilization
With the engine switched off, it is possible to continue 
to heat or ventilate the interior for a short while, 
dependent of the temperature set in the automatic 
climate control. Air volume and distribution are 
controlled automatically.
To  s e l e c t :
Turn the electronic key in starter switch to position 1 
or 0 or remove it altogether.
Press button  T. The indicator lamp in the button 
illuminates.
This function selection will not activate if the battery 
level is insufficient. 
The function switches off automatically:
• if the electronic key in starter switch is turned to 
position 2, 
• after approximately 30 minutes,
• if the battery voltage drops. 
         
        
        
     
        
        Page 173 of 399

170
Automatic climate control
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Rear window defroster
Turn the electronic key in starter switch to position 2.
To select:
Press the  F button in the control panel of the 
automatic air conditioner. The indicator lamp in the 
button illuminates. 
To c a nc el:
Press the  F button in the control panel of the 
automatic air conditioner. The indicator lamp in the 
button goes out.
Note:
Heavy accumulation of snow and ice should be removed 
before activating the defroster.  The rear window defroster uses a large amount of power. 
To keep the battery drain to a minimum, turn off the 
defroster as soon as the rear window is clear.
The defroster is automatically turned off after 
approximately 6–17 minutes of operation depending on 
the outside temperature and vehicle speed. 
If several power consumers are turned on 
simultaneously, or the battery is only partially charged, 
it is possible that the defroster will automatically turn 
itself off. When this happens, the indicator lamp inside 
the switch starts blinking.
As soon as the battery has sufficient voltage, the 
defroster automatically turns itself back on. 
         
        
        
     
        
        Page 179 of 399
176
Audio system
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Button and soft key operation
In these instructions, the alpha-numeric keypad (right 
side of radio face) and the function buttons (left side of 
the radio face) are referred to as “buttons” and the four 
keys under the display are referred to as “soft keys”
Note:
Do not press directly on the radio display face. Operation
Switching on and off
Press the control knob   .
The system is switched off when the electronic key in 
the starter switch is turned to position 0 or removed. 
The radio is switched on again when the electronic key 
in the starter switch is turned to position 1 or 2.
Note:
The system can also be switched on separately with the 
electronic key removed, but will switch itself off 
automatically after half an hour to conserve vehicle 
battery power. 
         
        
        
     
        
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184
Audio system
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Track selection Press the track selection 
“TRK” key. The current track 
will be displayed as “SIDE 1” 
or “SIDE 2”. The track will be 
changed automatically at the 
end of the tape.
Track search forward/backward Press the   button. 
“SEEK FWD” will be shown on 
the display and the track 
search will run the tape 
forward to the start of the next 
track.
Press the   button. 
“SEEK RWD” will be shown 
on the display and the track 
search will run the tape 
backward to the start of the 
track currently playing. Track search can be interrupted 
by pressing the same button again. Note:
The beginning of a track can only be located if there is a 
break of at least 4 seconds between tracks.
Fast forward/reverse
Press the   button. 
“FORWARD” will appear on 
the display and fast forward 
will start.
Press the   button. 
“REWIND” will appear on the 
display and fast reverse will 
start.
Fast forward/reverse is stopped by pressing the same 
button again, or it will stop automatically at the 
beginning or the end of the tape. The track will 
automatically change at the end or beginning of the tape 
and play will begin. 
         
        
        
     
        
        Page 191 of 399

188
Audio system
Te ch n i c a l
data
Instruments 
and controls Operation
DrivingInstrument 
cluster display Practical hints Car care Index
Playing CDs
Press the   button. When the changer is used for the 
first time after removing/inserting a magazine, play 
begins at CD 1 track 1. After that, the CD most recently 
played will start at the point where it was last switched 
off. CDs stored in the magazine can be selected by using 
the station preset buttons 1-6. The magazine slot number of 
the selected CD will be 
displayed after “CD”. The 
number of the track being 
played will be displayed after 
“TRACK”.
If there is no CD in the 
selected magazine slot, 
“NO CD” and the 
corresponding slot number 
will be displayed 
(e.g.“NO CD3”). After the last track on a CD has been 
played, the next CD will automatically be selected and 
played. Skipping tracks forward/backward
Press the   button. The next track on the CD will be 
played.
Press the   button. If the track has been playing for 
more than10 seconds, it will revert to the start of that 
track. If it has been playing for less than ten seconds it 
will revert to the preceding track. To skip several tracks, 
the respective button must be pressed until the desired 
track is reached. If the beginning or end of the CD is 
reached during the search, the first or last track will be 
played.