Page 7 of 498

Contents
Control system ..................................  137
Multifunction display ....................  137
Multifunction steering wheel ........  138
Menus ..........................................  140
Standard display menu ................  142
AUDIO menu ................................  143
NAV* menu ..................................  144
Vehicle status 
message memory menu ...............  145
Settings menu ..............................  146
Trip computer menu.....................  160
TEL menu* ...................................  162
Automatic transmission .....................  165
One-touch gearshifting.................  167
Gear ranges .................................  168
Gear selector lever position .........  169
Automatic shift program ..............  170
Driving tips ...................................  171
Steering wheel gearshift control 
(Speedshift) 
- CLK 500 and CLK 55 AMG .........  172
Manual shift program 
CLK 55 AMG ................................  175
Emergency operation 
(Limp Home Mode) ......................  177Good visibility ..................................... 178
Headlamp cleaning system* ......... 178
Rear view mirrors.......................... 178
Sun visors ..................................... 181
Rear window sunshade* ............... 182
Rear window defroster .................. 183
Climate control (CLK 320) .................. 184
Deactivating the 
climate control system ................. 187
Setting the temperature................ 187
Adjusting air distribution 
and volume ................................... 188
Defrosting ..................................... 189
Air recirculation mode .................. 190
Air conditioning............................. 191
Rear passenger compartment 
adjustable air vents....................... 193
Automatic climate control 
(CLK 500/CLK 55 AMG)..................... 194
Deactivating the 
automatic climate control system. 197
Setting the temperature................ 197
Adjusting air distribution............... 198
Adjusting air volume ..................... 199
Defrosting ..................................... 200
Maximum cooling MAXCOOL ........ 200Air recirculation mode ..................  201
Charcoal filter ...............................  202
Air conditioning ............................ 204
Residual heat and ventilation* 
(available on Automatic climate 
control panel design A only) .........  205
Rear passenger compartment 
adjustable air vents ......................  206
Audio system......................................  207
Audio and telephone, operation .... 207
Operating safety ...........................  207
Operating and display elements ... 208
Button and soft key operation ......  210
Operation......................................  210
Radio operation ............................ 215
Introduction to satellite radio* 
(USA only) ..................................... 220
CD mode.......................................  225
GSM network phones ...................  232
TDMA or CDMA network phones ..  238
Emergency calls “911” .................  245
Power windows ..................................  247
Opening and 
closing the windows .....................  247
Synchronizing power windows ......  250 
     
        
        Page 146 of 498

144 Controls in detailControl systemOperate the CD player
Turn on the radio and select the 
CD player (
page 227). Vehicles with 
COMAND*: Refer to separate 
operating instructions.
Press buttonè orÿ repeatedly 
until the settings for the CD currently 
being played appear in the multifunc-
tion display.
1Current CD (for CD changer*)
2Current track
Press buttonk orj repeatedly 
until the desired track is selected.
NAV* menu
The 
Nav
 menu contains the functions 
needed to operate your navigation system.
Press buttonè orÿ repeatedly 
until the message 
Nav
 appears in the 
multifunction display.
If the navigation system is switched off, 
the message 
Nav off
 appears in the 
multifunction display. 
If the navigation system is on, different 
messages, depending on the current 
state of the navigation system, appear 
in the multifunction display.
Please refer to the COMAND* manual for 
instructions on how to activate the route 
guidance system*.
iFor more information on satellite radio 
operation, see “Introduction to satellite 
radio* (USA only)” (
page 220). 
Vehicles with COMAND*: Refer to 
separate operating instructions.
iTo select a CD from the magazine, 
press a number on the audio system or 
the COMAND* system key pad located 
in the center dashboard. 
     
        
        Page 211 of 498
209 Controls in detail
Audio system
Item
Page
1
CD changer mode selector
AUX mode selector
225
215
2
Single CD mode selector 
227
3
Radio mode selector
4
Mute function (radio)
219
Pause (CD)
231
5
Volume distribution
213
6
Sound settings
211
7
Display
8
Alphanumeric keypad
Item
Page
9
Speed dialing memory 
(telephone) in descending 
order
a
Accepting a call
(telephone)
237
b
Telephone mode selector
232
c
Speed dialing memory 
(telephone) in ascending 
order
233
d
Terminating a call
(telephone)
237
e
CD slot
f
CD ejection
227
Item
Page
g
Soft keys
210
h
Volume
211
j
Switching on/off
210
k
Manual tuning / seek 
tuning (radio)
217
Track search, reverse (CD)
230
l
Manual tuning / seek 
tuning (radio)
217
Track search,
fast forward (CD)
230 
     
        
        Page 214 of 498

212 Controls in detailAudio systemAdjusting 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 211) 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. 
     
        
        Page 224 of 498

222 Controls in detailAudio systemThe first channel 001 is called up and the 
PTY system changes to All categories.
If no station can be received, 
ACQUIRING
 
appears in the display.
If the Satellite radio service is not 
activated, 
ACQUIRING
 will also appear in the 
radio display and 
NO SAT
 will appear in the 
multifunction display.Selecting a station
The following options are available:
Selecting a station using the selected 
category (
page 223),
Tuning via station presets 
(page 222),
Tuning via scan search (
page 224).
Tuning via manual channel input 
(page 222).
Tuning via the program category list 
(page 223).
Tuning via station presets
Ten satellite radio station presets are avail-
able.
You can access the presets via number 
keys.Accessing via number keys
Enter number of preset you wish to se-
lect, e.g. 1.
The radio plays the station stored un-
der this number and the PTY function 
changes to the category corresponding 
to the station.
Tuning via manual channel input
Example: tuning in channel 16
iThe system will tune to a default sta-
tion if no station had been selected pre-
viously.