2015 MERCEDES-BENZ C-Class SEDAN cooling

1, 2, 3 ...
12 V socket see Sockets
360° camera
Cleaning .........................................3 35
Function/notes ............................ .211
4ETS
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) ................................................. .199 A
ABS (Anti-lock Braking System) Display message ............................ 251
Function/notes ................................ 66
Important safety notes .................... 66
Warning lamp ................................. 286
Accident
Automatic measures after an acci-
dent ................................................. 59
Activating/deactivating cooling
with air dehumidification ................. 143
Active Blind Spot Assist Activating/deactivating (on-
board computer) ............................ 246
Display message ............................ 273
Function/informatio n.................... 221
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 246
Display message ............................ 272
Function/information .................... 224
Active Parking Assist
Detecting parking spaces .............. 203
Display message ............................ 273
Exiting a parking space .................. 205
Function/note s............................. 202
Important safety notes .................. 202
Parking .......................................... 204
ADAPTIVE BRAKE ................................. 74
Adaptive Brake Assist Function/note s................................ 70
Adaptive Damping System (ADS) ..... 198Adaptive Highbeam Assist
Display message ............................ 267
Function/note s............................. 127
Switching on/of f........................... 128
Additional speedometer ................... 248
Additives (engine oil) ........................ 400
AGILITY SELECT switch Automatic transmission ................. 167
Climate control (3-zone automatic
climate control )............................. 142
Climate control (dual-zone auto-
matic climate control ).................... 140
Air bags
Deployment ..................................... 56
Display message ............................ 263
Front air bag (driver, front
passenger) ....................................... 49
Important safety notes .................... 48
Introduction ..................................... 48
Knee bag .......................................... 50
PASSENGER AIR BAG indicator
lamps ............................................... 43
Side impact air bag .......................... 50
Window curtain air ba g.................... 51
Air-conditioning system
see Climate control
AIRMATIC
Display message ............................ 271
Function/note s............................. 197
AIRPANEL (cleaning instructions) .... 334
Air vents Important safety notes .................. 152
Rear ............................................... 153
Setting ........................................... 152
Setting the center air vents ........... 152
Setting the side air vents ............... 153
Alarm
ATA (Anti-Theft Alarm system )......... 76
Switching off (ATA) .......................... 76
Switching the function on/off
(ATA) ................................................ 76
Alarm system
see ATA (Anti-Theft Alarm system)
Anti-lock Braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system) 4
Index

Children
In the vehicle .................................. .59
Restraint systems ............................ 61
Special seat belt retractor .............. .60
Child seat
Forward-facing restraint system ...... 64
LATCH-type (ISOFIX) child seat
anchors ............................................ 62
On the front-passenger seat ............ 63
Rearward-facing restraint system .... 64
Top Tether ...................................... .62
Cigarette lighter ................................ 309
Cleaning Mirror turn signal .......................... .334
Climate control
Automatic climate control (3-
zone) .............................................. 141
Controlling automatically .............. .144
Cooling with air dehumidification .. 143
Defrosting the windows ................. 148
Defrosting the windshield .............. 147
Dual-zone automatic climate con-
trol ................................................. 139
ECO start/stop function (3-zone
automatic climate control) ............. 142
ECO start/stop function (dual-
zone automatic climate control) .... 139
Important safety notes .................. 138
Indicator lamp ................................ 144
Information about using auto-
matic climate control ..................... 142
Information about using dual-zone
automatic climate control .............. 139
Ionization ....................................... 152
Overview of systems ..................... .138
Perfume atomizer .......................... 150
Problems with cooling with air
dehumidification ............................ 144
Problem with the rear window
defroster ........................................ 149
Rear control panel ......................... 141
Refrigerant ..................................... 402
Refrigerant filling capacity ............. 403
Setting the air distribution ............. 146
Setting the airflow ......................... 146
Setting the air vents ..................... .152
Setting the climate mode .............. .145 Setting the temperature ................ 145
Switching air-recirculation mode
on/off ............................................ 149
Switching on/off ........................... 142
Switching residual heat on/off ...... 149
Switching the rear window
defroster on/off ............................ 148
Switching the synchronization
function on and off ........................ 147
Climate control system
Automatic engine start .................. 161
Automatic engine switch-off .......... 161
Climate control (3-zone automaticclimate control) ............................ .142
Deactivating/activating ................. 162
Important safety notes .................. 161
Introduction ................................... 161
Cockpit
Overview .......................................... 32
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 245
Display message ............................ 258
Operation/notes .............................. 69
COMAND display
Cleaning ......................................... 336
Combination switch .......................... 126
Consumption statistics (on-board
computer) .......................................... 237
Convenience box ............................... 304
Convenience closing feature .............. 99
Convenience opening feature ............ 98
Coolant (engine) Checking the level ......................... 327
Display message ............................ 267
Filling capacity ............................... 402
Important safety notes .................. 401
Temperature display in the instru-
ment cluster .................................. 231
Temperature display in the on-
board computer ............................ .244
Warning lamp ................................. 291
Cooling
see Climate control
Copyright ............................................. 29 Index
7

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 26). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise 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 dehumidifi-
cation function
R switch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and air humidity in the vehicle interior. The
interior filter cleans the air, thus improving
the interior climate.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. Optimum climate control is only ach-
ieved with the side windows and roof closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 149).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 98). This
will speed up the cooling process and the desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odors. A clogged filter reduces the amount of air supplied to the vehicle
interior. For this reason, you should alwaysobserve the interval for replacing the filter,which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in the
Maintenance Booklet.
i It is possible that the blower may be acti-
vated automatically 60 minutes after the
SmartKey has been removed depending on various factors, e.g. the outside tempera-
ture. The vehicle is then ventilated for
30 minutes to dry the climate control sys-
tem. 138
Overview of climate control systemsClimate control

Control panel for dual-zone automatic climate control
0043
To set the temperature, left (Y page 145)
0044 To set the air distribution (Y page 146)
0087 To set the airflow (Y page 146)
To switch off climate control (Y page 142)
0085 To set climate control to automatic (Y page 144)
0083 To defrost the windshield (Y page 147)
0084 To call up the Audio 20/COMAND climate control menu; see the separate operating
instructions
006B To switch the rear window defroster on/off (Y page 148)
006C To activate/deactivate synchronization (Y page 147)
006D To activate/deactivate air-recirculation mode manually (Y page 149)
006E To activate/deactivate cooling with air dehumidification (Y page 143)
006F To set the temperature, right (Y page 145)Optimum use of dual-zone climate
control
Dual-zone automatic climate control The following contains notes and recommen-
dations on optimum use of dual-zone climate control.
R Activate climate control using the 0058
rocker switch. The indicator lamp above
the 0058 rocker switch lights up. The "Cool-
ing with air dehumidification" function is
not activated automatically in automatic mode. If necessary, activate this function
(Y
page 143).
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could oth-
erwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode. Overview of climate control systems
139Climate control

AGILITY SELECT switch
You can choose between various drive pro-
grams with the AGILITY SELECT switch
(Y
page 167).
If you have selected the drive program E, the
climate control switches to Eco mode.
In Eco mode:
R the cooling output is reduced when cooling
R when heating, the electrical heater booster
is deactivated and heat output is reduced
as a result
R the rear window defroster running time is
reduced
If you have selected the drive program C,S or
S+ the climate control switches to Comfort
mode. The current climate control settings
are maintained in Comfort mode.
ECO start/stop function During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require the full cli-
mate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 162). 140
Overview of climate control systemsClimate cont
rol

Control panel for 3-zone automatic climate control
Canada only
Front control panel
0043 To set the temperature, left (Y page 145)
0044 To set the air distribution, left (Y page 146)
0087 To set the airflow (Y page 146)
To switch off climate control (Y page 142)
0085 To set climate control to automatic (Y page 144)
0083 To defrost the windshield (Y page 147)
0084 To call up the Audio 20/COMAND climate control menu; see the separate operating
instructions
To activate/deactivate the residual heat function (Y page 149)
006B To switch the rear window defroster on/off (Y page 148)
006C To activate/deactivate cooling with air dehumidification (Y page 143)
006D To activate/deactivate air-recirculation mode manually (Y page 149)
006E To set the air distribution, right (Y page 146)
006F To set the temperature, right (Y page 145)
Rear control panel
0070 To set the temperature (Y page 145)
0071 Display
0072 To set the airflow (Y page 146) Overview of climate control systems
141Climate control

Optimum use of 3-zone automatic cli-
mate control
3-zone automatic climate control The following contains instructions and rec-
ommendations to enable you to get the most
out of your 3-zone automatic climate control.
R Activate climate control using the 0058
rocker switch. The indicator lamp above
the 0058 rocker switch lights up. The "Cool-
ing with air dehumidification" function is
not activated automatically in automatic
mode. If necessary, activate this function
(Y page 143).
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could oth-
erwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the residual heat function if you want to
heat or ventilate the vehicle interior when
the ignition is switched off. The residual
heat function can only be activated or deac-
tivated with the ignition switched off. The
residual heat function is switched off when the ignition is switched on.
AGILITY SELECT switch You can choose between various drive pro-
grams with the AGILITY SELECT switch
(Y page 167).
If you have selected the drive program E, the
climate control switches to Eco mode.
In Eco mode:
R the cooling output is reduced when cooling
R when heating, the electrical heater booster
is deactivated and heat output is reduced
as a result
R the rear window defroster running time is
reduced If you have selected the drive program
C,Sor
S+ the climate control switches to Comfort
mode. The current climate control settings
are maintained in Comfort mode.
ECO start/stop function During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require the full cli-
mate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 162). Operating the climate control sys-
tems Switching climate control on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly
Switch on climate control primarily using the 0058 rocker switch (Y page 144).
Switching on/off X
Turn the SmartKey to position 2in the igni-
tion lock (Y page 157).
X To switch on: press the008A/!
rocker switch up or down.
The Audio 20/COMAND climate control
menu opens.
X Activate the climate control using the air-
conditioning function bar; see the separate
Audio 20/COMAND operating instruc-
tions.
or
X Set the airflow to level 1 or higher using the
H button. 142
Operating the climate control systemsClimate control

X
To switch off: press the008A/!
rocker switch up or down.
The Audio 20/COMAND climate control
menu opens.
X Deactivate the climate control using the
air-conditioning function bar; see the sep-
arate Audio 20/COMAND operating
instructions.
or X Set the airflow to level 0 using the H
rocker switch. Activating/deactivating cooling with
air dehumidification
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore,
deactivate the cooling with air-dehumidifica-
tion function only briefly.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This isnormal and not a sign that there is a malfunc-
tion.
Activating/deactivating X
To activate: press the005Arocker switch
up or down.
The indicator lamp above the rocker switch lights up.
or
X Activate the cooling with air dehumidifica-
tion function via Audio 20/COMAND (see
the separate operating instructions). X
To deactivate: press the005Arocker
switch up or down.
The indicator lamp above the rocker switch
goes out.
or
X Deactivate the cooling with air dehumidifi-
cation function via Audio 20/COMAND
(see the separate operating instructions). Operating the climate control systems
143Climate control