2017 MERCEDES-BENZ S CLASS cooling

1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 183
12 V socket
see Sockets
115 V socket ...................................... 297
360° camera
Cleaning ........................................ .3 23
Function/notes ............................ .1 94
AABS (Anti-lock Braking System)
Display message ............................ 228
Function/notes ................................ 66
Warning lamp ................................. 261
Accident
Automatic measures after an acci-
dent ................................................. 58
Activating media mode
General notes ................................ 278
Activating/deactivating cooling
with air dehumidification ................. 135
Activating/deactivating Night
View Assist Plus
With spotlight function ................... 202
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 223
Display message ............................ 247
Function/information .................... 204
Active Body Control (ABC)
Display message ............................ 246
Function/notes ............................. 180
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 223
Display message ............................ 246
Function/information .................... 206
Active multicontour seat .................. 112
Active Parking Assist
Detecting parking spaces .............. 187
Display message ............................ 247
Exiting a parking space .................. 189 Function/notes ............................. 186
Important safety notes .................. 186
Parking .......................................... 188
ADAPTIVE BRAKE ................................. 73
Adaptive Brake Assist
Function/notes ................................ 70
Adaptive Damping System (ADS) ..... 182
Adaptive Highbeam Assist Plus
Display message ............................ 241
Function/notes ............................. 126
Switching on/off ........................... 127
Additional speedometer ................... 225
Additives (engine oil) ........................ 374
Address book
see also Digital Operator's Man-
ual .................................................. 269
Adjusting the volume
Multimedia system ........................ 270
Air bags
Belt bags .......................................... 46
Cushion air bags .............................. 50
Deployment ..................................... 55
Display message ............................ 239
Front air b ag (driver, front
p assenger) ....................................... 49
Important safety notes .................... 48
Introduction ..................................... 48
Knee bag .......................................... 49
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 43
Side impact air bag .......................... 50
Window curtain air bag .................... 50
Air vents
Glove box ....................................... 143
Important safety notes .................. 143
Rear ............................................... 143
Setting ........................................... 143
Setting the center air vents ........... 143
Setting the side air vents ............... 143
Air-conditioning system
see Climate control
AIRMATIC
Display message ............................ 245
Function/notes ............................. 182
Alarm
ATA (Anti-Theft Alarm system) ......... 764
Index

Wooden trim ................................. .3 25
CD
see also Digital Operator's Man-
ual ................................................. .2 69
CD player (on-board computer) ....... .2 18
Center console
Overview .......................................... 38
Stowage space .............................. 282
Center console in the rear com-
partment
Stowage compartment .................. 283
Central locking
Locking/unlocking (SmartKey) ....... .7 7
Changing the media source ............ .2 18
Chauffeur mode
Display message ............................ 256
Fully reclined position .................... 109
General notes ................................ 106
Installing the head restraint ........... 108
Moving front-passenger seat into
the chauffeur position .................... 106
Moving the front-passenger seat
into the normal position ................. 108
Removing the head restraint .......... 108
Child
Restraint system .............................. 60
Child seat
Forward-facing restraint system ...... 63
LATCH-type (ISOFIX) child seat
anchors ............................................ 61
On the front-passenger seat ............ 63
Rearward-facing restraint system .... 63
Top Tether ....................................... 62
Child-proof locks
Important safety notes .................... 64
Rear doors ....................................... 65
Children
Special seat belt retractor ............... 59
Cigarette lighter ................................ 294
Cleaning
Mirror turn signal ........................... 323
Climate control
Adjusting the footwell tempera-
ture (multimedia system) ............... 275
Automatic climate control ............. 133
Controlling automatically ............... 136
Cooling with air dehumidification .. 135 Cooling with air dehumidification
(multimedia system) ...................... 275
Defrosting the window s ................. 139
De frosti ng the windshield .............. 139
ECO start/stop function ................ 134
General notes ................................ 132
Indicator lamp ................................ 136
Ionization ....................................... 142
Ionization (multimedia system) ...... 274
Notes on using the automatic cli-
mate control .................................. 134
Overview ........................................ 273
Overview of systems ...................... 132
Perfume atomizer .......................... 141
Perfume atomizer (multimedia
system) .......................................... 274
Pre-entry climate control (via key)
(multimedia system) ...................... 274
Pre-entry climate control at
departure time (multimedia sys-
tem) ............................................... 275
Problem with the rear window
defroster ........................................ 140
Problems with cooling with air
dehumidification ............................ 136
Rear control panel ......................... 133
Refrigerant ..................................... 375
Refrigerant filling capacity ............. 376
Setting the air distribution ............. 138
Setting the air vents ...................... 143
Setting the airflow ......................... 138
Setting the climate mode ............... 137
Setting the climate mode (multi-
media system) ............................... 274
Setting the temperature ................ 137
Switching air-recirculation mode
on/off ............................................ 140
Switching on/off ........................... 135
Switching residual heat on/off ...... 140
Switching the rear window
defroster on/off ............................ 139
Switching the synchronization
function on and off ........................ 138
Synchronization function (multi-
media system) ............................... 275
Climate control settings
Multimedia system ........................ 273 Index 7

Climate control system
Climate control .............................. 135
Cockpit
Overview .......................................... 34
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................ .2 22
Display message ............................ 233
Operation/notes .............................. 68
COMAND display
Cleaning ......................................... 324
Combination switch .......................... 125
Connecting a USB device
see also Digital Operator's Man-
ual ................................................. .2 69
Consumption statistics (on-board
computer) .......................................... 215
Controller .......................................... .2 70
Convenience box ............................... 287
Convenience closing feature .............. 92
Convenience opening feature ............ 92
Coolant (engine)
Checking the level ......................... 316
Display message ............................ 242
Filling capacity ............................... 375
Important safety notes .................. 374
Temperature gauge ........................ 211
Warning lamp ................................. 264
Coolbox .............................................. 299
Cooling
see Climate control
Copyright ............................................. 33
Cornering light function
Display message ............................ 241
Function/notes ............................ .1 26
Crosswind Assist ........................... 72, 73
Crosswind Assist (vehicles with
MAGIC BODY CONTROL) ................... 180
Crosswind Assist (vehicles with-
out MAGIC BODY CONTROL) ....... .7 2, 73
Cruise con trol
Calling up the speed last stored .... 170
Cruise control lever ....................... 170
Deacti vating ................................... 170
Di splay message ............................ 250
Driving system ............................... 169
Function/notes ............................. 169 General notes ................................ 169
Important safety notes .................. 169
Setting a speed .............................. 170
Storing and maintaining current
speed ............................................. 170
Cup holder
Center console .............................. 290
Important safety notes .................. 290
Rear compartment ......................... 291
Temperature controlled ................. 292
Cushion air bags .................................. 50
Customer Assistance Center
(CAC) ..................................................... 30
Customer Relations Department ....... 30
D Data
see Technical data
Data carrier
Selecting ........................................ 218
Daytime running lamps
Display message ............................ 241
Function/notes ............................. 124
Switching on/off (on-board com-
puter) ............................................. 225
Declarations of conformity ................. 29
Diagnostics connection ...................... 30
Digital Operator's Manual
Help ................................................. 25
Introduction ..................................... 25
Digital speedometer ......................... 215
DIRECT SELECT lever
Automatic transmission ................. 152
Display
see Display messages
see Warning and indicator lamps
Display messages
ASSYST PLUS ................................ 318
Calling up (on-board computer) ..... 227
Driving systems ............................. 245
Engine ............................................ 242
General notes ................................ 227
Hiding (on-board computer) ........... 227
Introduction ................................... 227
Lights ............................................. 241
Safety systems .............................. 228
SmartKey ....................................... 2578
Index

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: R
switch off climate control only briefly R
switch on air-recirculation mode only briefly R
switch on the cooling with air dehumidifica-
tion function R
switch 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 available only 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 ( Y
page 147).
The residual heat function can only be activated
or deactivated with the ignition switched off
( Y
page 140).
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 supplied
to 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.
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature ( Y
page 92). This will speed
up the cooling process and the desired inte-
rior t emper ature will be reached more
quickly.
i It 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.
i Hybrid vehicles: observe the notes on cli-
mate control in the separate Operator's Man-
ual.132
Overview of climate control systems
Climate control

Activating/deactivating X
To activate: press th e V rocke r switch up
or down .
The indicator lamp abov e th e rocke r switch
lights up. X
To deactivate: press th e V rocke r switch
up or down .
The indicator lamp abov e th e rocke r switch
goe s out .
Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp in th e
V butto n flashes
three times or remain s
off . Cooling wit h air
dehumidification can
also no longer be activa-
te d usin g th e multimedia
system; see th e Digital
Operator' s Manual. Cooling wit h air dehumidification has been deactivated due to a mal-
function . X
Visit a qualified specialis t workshop .
Setting climate cont rol to automatic
Gene ra l notesIn automatic mode, th e set temperature is main -
taine d automatically at a constan t level. The
system automatically regulates th e temperature
of th e dispensed air, th e airflow and th e air dis-
tribution .
During automatic controlling, th e "Cooling wit h
air dehumidification " function is activated.
Cont rol ling front climate cont rol auto-
ma tically using the front cont rol panelX
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 145).X
Se t th e desired temperature usin g th e

Problems with the rear window defroster Problem
Possible causes/consequences and P Solutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged. X
Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster
can be activated again.
Switching air-recirculation mode
on/off
General notes You can also temporarily deactivate the flow of
fresh air manually if unpleasant odors are enter-
ing the vehicle from outside. The air already
inside the vehicle will then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 145).X
To activate: press the r rocker switch up
or down.
The indicator lamp in the r rocker switch
lights up.
Air-recirculation mode switches on automati-
cally: R
at high outside temperatures R
at high levels of pollution R
in a tunnel
The indicator lamp in the r rocker switch is
not lit when automatic air-recirculation mode is
activated. Outside air is added after about
30 minutes. X
To deactivate: press the r rocker switch
up or down.
The indicator lamp in the r rocker switch
goes out. Air-recirculation mode deactivates automati-
cally: R
after approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †) R
after approximately five minutes if cooling
with air dehumidification is deactivated R
after approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with air dehumidifica-
tion" function is activated
Switching the residual heat on or off
General notes Vehicles with rear-compartment climate
control: once the engine is switched off, it is
possible to make use of the residual heat of the
engine to continue heating or ventilating the
rear and front compartment of the vehicle for
approximately 15 minutes. If the "Residual heat"
function is set for only the front or only the rear
compartment, it is possible to continue heating
or ventilating for approximately 30 minutes.
Vehicles without rear-compartment climate
control: once the engine is switched off, it is
possible to make use of the residual heat of the
engine to continue heating or ventilating the
front compartment of the vehicle for approx-
imately 30 minutes.
The heating or ventilation time depends on the
temperature that has been set.140
Operating the climate control systems
Climate control

C
Adjusts temperature, airflow and air distri-
bution, left, as well as displaying the current
settingD
Calls up the climate control menu, displays
the current cooling and climate mode set-
ting

PLUG ‑ IN HYBRID: before getting in, the driver's
seat area or the whole vehicle interior is briefly
warmed or ventilated. The air from the vents is
pre-cooled. X
Call up the climate control menu
( Y
page 274). X
To select Pre-entry Climate Control
via Key : turn and press the controller.X
To activate or deactivate: turn the control-
ler. X
To exit the menu: press the 8 button.
Activating or deactivating pre-entry cli-
mate control at departure time This function is available for PLUG ‑ IN HYBRID
vehicles.
The driver's seat and the vehicle interior are
heated or cooled prior to the set departure time. X
Call up the climate control menu
( Y
page 274). X
To select Pre-entry Climate Ctrl. at
Departure Time : turn and press the control-
ler.
A rotary menu appears. X
To select the setting: turn the controller.
The menu symbol, text and image show the
selected setting. X
To exit the menu: press the 8 button.
Adjusting the footwell temperature X
Call up the climate control menu
( Y
page 274). X
To select Adjust Footwell : turn and press
the controller. X
To change sides: slide 1 the controller.X
To change the setting: turn the controller.X
To exit the menu: press the 8 button.
Settings in the bottom bar of the cli-
mate control menu
Switching cooling with air dehumidifica-
tion on/off
i Activating the cooling with air dehumidifi-
cation facilitates the cooling of the vehicle
interior even with high outside temperatures. X
Call up the climate control menu
( Y
page 274). X
Slide 6 the controller repeatedly until the
bottom bar is activated. X
To select s A/C : turn and press the con-
troller. X
The cooling with air dehumidification function
is activated s or deactivated S .
i The current status of the cooling function is
displayed in the climate control bar: A/C ON
– activated, A/C OFF – deactivated.
i Deactivating the cooling with air dehumidi-
fication function reduces fuel consumption.
Synchronizing the climate control set-
tings Use s Sync (synchronization) to select the cli-
mate control setting for all zones together s or
separately S . X
Call up the climate control menu
( Y
page 274). X
Slide 6 the controller repeatedly until the
bottom bar is activated. X
To select s Sync : turn and press the con-
troller. X
The synchronization function is activated s
or deactivated S .
With the synchronization function switched off,
you can alternate between driver and front
passenger. X
To switch from the footer to the main area:
slide 5 the controller. X
To switch between left and right: slide 1
the controller.
Not all climate control functions allow switch-
ing between the driver and front passenger.
For further information on synchronizing climate
control settings, see ( Y
page 138).
Navigation mode
Important safety notes
G WARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted fromOperating system 275
Multimedia system Z