2017 MERCEDES-BENZ S-Class CABRIOLET cooling

1, 2, 3 ...
4ETS (Electronic Traction System)see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 161
12 V socket
see Sockets
360° camera
Cleaning ........................................ .284
Function/notes .............................1 72
A
ABS (Anti-lock Braking System)
Display message ............................ 205
Function/notes ................................ 61
Warning lamp ................................. 235
Accident
Automatic measures after an acci-
dent ................................................. 57
Activating media mode
General notes ................................ 252
Activating/deactivating cooling
with air dehumidification ................. 116
Activating/deactivating Night
View Assist Plus
With spotlight function ................... 180
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 200
Display message ............................ 222
Function/information .................... 181
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 200
Display message ............................ 221
Function/information .................... 184
Active multicontour seat .................... 98
Active Parking Assist
Detecting parking spaces .............. 165
Display message ............................ 222
Exiting a parking space .................. 167
Function/notes ............................. 164
Important safety notes .................. 164
Parking .......................................... 166
ADAPTIVE BRAKE ................................. 68 Adaptive Brake Assist
Function/notes ................................ 65
Adaptive Damping System (ADS) ..... 160
Adaptive Highbeam Assist Plus
Display message ............................ 216
Function/notes ............................. 109
Switching on/off ........................... 110
Additional speedometer ................... 202
Additives (engine oil) ........................ 332
Address book
see also Digital Operator's Man-
ual .................................................. 243
Adjusting the volume
Multimedia system ........................ 244
Air bags
Deployment ..................................... 54
Display message ............................ 214
Front air bag (driver, front
passenger) ....................................... 47
Head bag ......................................... 49
Important safety notes .................... 46
Introduction ..................................... 46
Knee bag .......................................... 48
Occu

pant Classification System
(OCS) ............................................... 49
PASSENGER AIR BAG indicator
lamps ............................................... 42
Side impact air bag .......................... 48
Air vents
Glove box ....................................... 122
Important safety notes .................. 121
Rear ............................................... 122
Setting ........................................... 121
Setting the center air vents ........... 122
Setting the side air vents ............... 122
Switching AIRSCARF on/off .......... 100
Air-conditioning system
see Climate control
AIRCAP
Cleaning instructions ..................... 282
Extending/retracting ....................... 91
Important safety notes .................... 91
AIRMATIC
Display message ............................ 220
Function/notes ............................. 159
AIRSCARF
Switching on/off ........................... 100
4Index

Washing by hand ........................... 280
Wheels ...........................................283
Wind deflector ............................... 282
Wind screen ................................... 283
Windows ........................................ 283
Wiper blades .................................. 283
Wooden trim .................................. 286
CD
see also Digital Operator's Man-
ual ..................................................2 43
CD player (on-board computer) ........195
Center console
Overview .......................................... 37
Stowage space .............................. 255
Center console in the rear com-
partment
Stowage compartment .................. 256
Central locking
Locking/unlocking (SmartKey) ........7 2
Changing the media source .............195
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 60
LATCH-type (ISOFIX) child seat
anchors ............................................ 59
On the front-passenger seat ............ 60
Rearward-facing restraint system .... 60
Children
Special seat belt retractor ............... 58
Cigarette lighter ................................ 260
Cleaning
Mirror turn signal ........................... 284
Climate control
Adjusting the footwell tempera-
ture (multimedia system) ............... 249
Automatic climate control ............. 115
Controlling automatically ............... 117
Cooling with air dehumidification .. 116
Cooling with air dehumidification
(multimedia system) ...................... 249
Defrosting the windows ................. 118
Defrosting the windshield .............. 118
ECO start/stop function ................ 115
General notes ................................ 114
Indicator lamp ................................ 116
Ionization ....................................... 121
Ionization (multimedia system) ...... 248 Note
s on using the automatic cli-
mate control .................................. 115
Overview ........................................ 247
Overview of systems ...................... 114
Perfume atomizer .......................... 120
Perfume atomizer (multimedia
system) .......................................... 248
Problem with the rear window
defroster ........................................ 119
Problems with cooling with air
dehumidification ............................ 116
Refrigerant ..................................... 333
Refrigerant filling capacity ............. 334
Setting the air distribution ............. 117
Setting the air vents ...................... 121
Setting the airflow ......................... 118
Setting the climate mode ............... 117
Setting the climate mode (multi-
media system) ............................... 248
Setting the temperature ................ 117
Switching air-recirculation mode
on/off ............................................ 119
Switching on/off ........................... 116
Switching residual heat on/off ...... 120
Switching the rear window
defroster on/off ............................ 119
Switching the synchronization
function on and off ........................ 118
Synchronization function (multi-
media system) ............................... 249
Climate control settings
Multimedia system ........................ 247
Climate control system
Climate control .............................. 115
Cockpit
Overview .......................................... 33
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 199
Display message ............................ 210
Operation/notes .............................. 64
COMAND display
Cleaning ......................................... 285
Combination switch .......................... 108
Connecting a USB device
see also Digital Operator's Man-
ual .................................................. 243
Index7

Consumption statistics (on-board
computer).......................................... 192
Controller .......................................... .244
Convenience closing feature .............. 87
Convenience opening feature ............ 87
Coolant (engine)
Checking the level ......................... 276
Display message ............................ 217
Filling capacity ............................... 333
Important safety notes .................. 332
Temperature gauge ........................ 188
Warning lamp ................................. 238
Cooling
see Climate control
Copyright ............................................. 32
Cornering light function
Display message ............................ 216
Function/notes .............................1 09
Crosswind Assist ................................. 68
Cruise control
Calling up the speed last stored .... 149
Cruise control lever ....................... 149
Deactivating ................................... 150
Display message ............................ 225
Driving system ............................... 149
Function/notes .............................1 49
General notes ................................ 149
Important safety notes .................. 149
Setting a speed .............................. 150
Storing and maintaining current
speed ............................................. 149
Cup holder
Center console .............................. 258
Important safety notes .................. 258
Rear compartment ......................... 258
Customer Assistance Center
(CAC) ..................................................... 29
Customer Relations Department ....... 29
D
Data
see Technical data
Data carrier
Selecting ........................................ 195
Daytime running lamps
Display message ............................ 216
Function/notes .............................1 07Switching on/off (on-board com-
puter) ............................................. 202
Declarations of conformity ................. 28
Diagnostics connection ......................29
Digital Operator's Manua l
Help ................................................ .24
Introduction .....................................2 4
Digital speedomete r........................ .192
DIRECT SELECT lever
Automatic transmission ................. 131
Display
see Display messages
see Warning and indicator lamps
Display messages
ASSYST PLUS ................................ 277
Calling up (on-board computer) ..... 204
Driving systems .............................2 20
Engine ............................................ 217
General notes ................................ 204
Hiding (on-board computer) ........... 204
Introduction ................................... 204
Lights ............................................. 216
Safety systems .............................. 205
SmartKey ....................................... 231
Tires ............................................... 226
Vehicle ...........................................2 27
Distance recorder
see Odometer
see Trip odometer
Distance warning (warning lamp) .... 240
Distance warning function
Function/notes ................................ 64
DISTRONIC PLUS
Activating ....................................... 152
Activation conditions ..................... 152
Cruise control lever ....................... 152
Deactivating ................................... 155
Display message ............................ 224
Displays in the instrument cluster .. 155
Driving tips ....................................1 56
Driving with DISTRONIC PLUS ....... 153
Fu
nction/notes .............................1 50
Important safety notes .................. 151
Setting a speed .............................. 154
Setting the specified minimum
distance ......................................... 154
Stopping ........................................ 153
8Index

Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog
up.
To prevent the windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only briefly
Rswitch on the cooling with air dehumidifica-
tion function
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The air filter
cleans the air, thus improving the interior cli-
mate.
The "Cooling with air dehumidification" function
is only available when the engine is running.
Optimum climate control is only achieved with
the side windows and roof closed.
If you start the engine using your smartphone,
the last selected climate control setting is reac-
tivated (
Ypage 126).
The residual heat function can only be activated
or deactivated with the ignition switched off
(
Ypage 120).
To enable the air conditioning, pollutant moni-
toring and air filtering systems to function cor-
rectly, an interior filter must be used at all times. Ensure that the filter is properly installed and that the filter housing in the engine compart-
ment is correctly and tightly sealed by the cover
at all times during operation. Use filters that
have been recommended and approved by
Mercedes-Benz. Always have service work car-
ried out at a qualified specialist workshop.
The integrated filter filters out most particles of dust and soot and completely filters out pollen.
It also reduces gaseous pollutants and odors. A
clogged filter reduces the amount of air suppliedto the vehicle interior. For this reason, you
should always observe the interval for replacing
the filter, which is specified in the Maintenance
Booklet. As it depends on environmental condi- tions, e.g. heavy air pollution, the interval may
be shorter than stated in the Maintenance Book-
let.
iWhen the weather is warm, ventilate the
vehicle for a brief period. This will speed up
the cooling process and the desired interior
temperature will be reached more quickly.
iIt is possible that the blower may be activa-
ted automatically 60 minutes after the Smart-
Key has been removed depending on various
factors, e.g. the outside temperature. In vehi- cles with the KEYLESS-GO or KEYLESS-GO
start function, the blower can switch on auto-
matically after the engine has been switched
off and the door opened. The vehicle is then
ventilated for 30 minutes to dry the automatic
climate control.
114Overview of climate control systems
Climate control

Automa tic climate control panel
Example: automatic climat econtrol panel
:Sets climat econtrol to automatic, lef t (Ypage 117)
;Sets thetemperature, lef t (Ypage 117)
=Sets theairflow, lef t (Ypage 118)
?Activates/deactivates air-recirculation mod e (Ypage 119)
ADefroststh ewindshield (Ypage 118)
BCalls up theclimat econtrol men uof th emultimedia system (Ypage 248)
CSwitches therear window defroste ron/off (Ypage 119)
DSwitches coolin gwit hair dehumidification on/off (Ypage 116)
Switches th eresidual heat on/off (
Ypage 120)
ESets theairflow, right (Ypage 118)
FSets thetemperature, right (Ypage 117)
GSets climatecontrol to automatic, right (Ypage 117)
Optimum use ofautomatic climate
control
Climate control system
Below, you can fin d anumber of note sand rec -
ommendation sto help you use climat econtrol
optimally.
RActivat eclimat econtrol usin gth eÃ
rocke rswitch .The indicator lamp in th eÃ
rocke rswitch lights up. The "Cooling wit hair
dehumidification "function is activated in
automatic mode.
RSe tth etemperature to 72 ‡(22 †).
ROnly use th e"Windshield defrosting "function
briefl yuntil th ewindshield is clear again .
ROnly use air-recirculation mod ebriefly, e.g. if
there are unpleasant outside odor sor when in
a tunnel. The windows could otherwise fog up,
since no fresh air is draw nint oth evehicl ein
air-recirculation mode.
RUse th eresidual heat function if you want to
heat or ventilat eth evehicl einterior when th e
ignition is switched off .The residual heat
function can only be activated or deactivated
wit hth eignition switched off .The residual
heat function is switched off when th eignition
is switched on .
ECO start/stop function
During automatic engin eswitch-off ,th eclimat e
control system only operate sat areduce dcapa-
city. If you require th efull climat econtrol output ,
Overview of climate control systems115
Climate control

you can switch off theECO start/sto pfunction
by pressing th eECO butto n (Ypage 129).
Operating the climate contro l sys-
tems
Activating/deactivating climate con-
tr ol
Gene ral notes
Whe nth eclimat econtrol is switched off ,th eair
supply and air circulation are also switched off .
The windows could fog up. Therefore ,switch off
climat econtrol only briefl y
Switc hon climat econtrol primarily usin gth e
à rockerswitch (
Ypage 117).
Activating/deactivating
XTurn theSmartKey to position 2in th eignition
loc k (Ypage 124).
XTo activate: set theairflow to level 1or higher
usin gth eK rockerswitch .
XTo deactivate: set theairflow to level 0usin g
th eK rockerswitch .
Switching cooling with air dehumidi-
ficationon/off
Gene ral notes
If you deactivat eth e"Coolin gwit hair-dehumid -
ification "function ,th eair inside th evehicl ewill no
tbe cooled .The air inside th evehicl ewill also
no tbe dehumidified. The windows can fog up
mor equickly. Therefore ,only deactivat eth e
"Coolin gwit hair-dehumidification "function
briefly.
The "Coolin gwit hair dehumidification "function
is only available when th eengin eis running .The
air inside th evehicl eis cooled and dehumidifie d
accordin gto th etemperature selected.
Condensation may dri pfrom th eunderside of
th evehicl ewhen it is in coolin gmode. This is
normal and no t asign that there is amalfunc -
tion .
Acti vating/deactivating
XTo activate: press theÁ rockerswitch up
or down .
The indicato rlamp abov eth erocke rswitch
lights up.
XTo switch off :press th eÁ rockerswitch
up or down .
The indicato rlamp abov eth erocke rswitch
goe sout .
Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences and MSolutions
The indicatorlamp in th e
Á buttonflashes
three times or remain s
off .Cooling wit hair
dehumidification can
also no longer be activa-
te dusin gth emultimedia
system; see th eDigital
Operator' sManual.Cooling wit hair dehumidification has been deactivated due to amal-
function .
XVisitaqualified specialist workshop .
116Operating the climate control systems
Climate control

Setting climate control to automatic
General notes
In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature
of the dispensed air, the airflow and the air dis-
tribution.
During automatic controlling, the "Cooling with
air dehumidification" function is activated.
The system automatically detects whether the
soft top is open or closed and automatically
adjusts the air settings depending on the soft
top status.
Setting climate control to automatic
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XSet the desired temperature using the w
rocker switch.
XTo activate: press theÃrocker switch up
or down.
The indicator lamp in the Ãrocker switch
lights up.
XTo switch to manual operation: press the
K rocker switch up or down.
The indicator lamp in the Ãrocker switch
goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp on
the à rocker switch goes out. The function
which has not been changed manually, however,
continues to be controlled automatically. When
the manually set function switches back to auto-
matic mode, the indicator lamp on the Ã
rocker switch lights up again.
Adjusting the climate mode settings
In automatic mode you can select the following
airflow settings for the driver's and front-
passenger areas:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSE low airflow, slightly warmer and draft- free setting
XTo set:set the climate mode using the mul-
timedia system (Ypage 248).
Setting the temperature
General notes
You can set the temperature separately for the
following areas:
Rfront footwells, left and right
Rdriver and front passenger area
Setting the temperature
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo increase or reduce: press thew
rocker switch up or down.
XOnly change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the footwell temperature
The footwell temperature for the driver and front
passenger can be set separately using the mul-
timedia system (see the Digital Operator's Man-
ual).
Setting the air distribution
Air distribution settings
¯ Directs air through the defroster vents
P Directs air through the center and side air
vents
O Directs air through the footwell air vents
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents
W Sets the air distribution to automatic
Operating the climate control systems117
Climate control

Setting the air distribution via the mul-
timedia system
The air distribution for the left and right sides of
the driver's and front-passenger areas can be
adjusted using the multimedia system (see the
Digital Operator's Manual).
Setting the airflow
General notes
You can select different airflow settings for the
driver's and front-passenger sides.
Setting the airflow
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo increase or reduce: press theK
rocker switch up or down.
iYou can also set the airflow using the mul-
timedia system (see the Digital Operator's
Manual).
Activating or deactivating the syn-
chronization function
Climate control can be set centrally using the
synchronization function. The settings for tem-
perature, air distribution and airflow on the driv-
er's side are adopted for the front-passenger
side.
XTo activate or deactivate: activate or deac-
tivate the "Synchronization" function via the
multimedia system (see the Digital Operator's
Manual).
The synchronization function deactivates if the
settings for the front-passenger side are
changed.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to clear a fogged up windshield or front
side windows on the inside.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Switching the "Windshield defrosting"
function on or off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo activate: press the¬rocker switch on
the front control panel up or down.
The indicator lamp in the ¬rocker switch
lights up.
The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and front
side windows
Rair-recirculation mode off
Rwindshield heating on
Rcooling with air dehumidification on
XTo deactivate: press the¬rocker switch
up or down.
The indicator lamp in the ¬rocker switch
goes out. The previously selected settings are restored. Air-recirculation mode remains
deactivated.
Defrosting the windows
Windows fogged up on the inside
XActivate the "Cooling with air dehumidifica-
tion" function with the Árocker switch.
or
XActivate the "Cooling with air dehumidifica-
tion" function via the multimedia system; see
the Digital Operator's Manual.
XSwitch on automatic mode using the Ã
rocker switch.
XIf the windows continue to fog up: activate the
"Windshield defrosting" function using the
¬ rocker switch. The windshield heating is
switched on.
iYou should only select this setting until the
windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XSwitch on automatic mode using the Ã
rocker switch.
118Operating the climate control systems
Climate control