2015 MERCEDES-BENZ S-CLASS COUPE Owners Manual

Problems with the "Cooling with air dehumidification" function
Problem
Possible causes/consequences and
M
MSolutions Vehicles with auxili-
ary heating:
cooling
with air dehumidifica-
tion can no longer be
switched on using
COMAND Online (see
the separate operating
instructions).
Vehicles without aux- iliary heating: the indi-
cator lamp in the Á
button flashes three
times or remains off.
Cooling with air dehu-
midification can also no longer be switched on
using COMAND Online
(see the separate oper-
ating instructions). The cooling with air dehumidification function has been deactiva-
ted due to a malfunction.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
General notes In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If desired, cooling with
air dehumidification can be deactivated.
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 mist up more quickly. Therefore,
deactivate the "Cooling with air-dehumidifi-
cation" function only briefly. Setting climate control to automatic
mode X
Turn the key to position 2in the ignition
lock (Y page 161).
X Set the desired temperature using the
w rocker switch.
or
X Set the desired temperature using
COMAND Online (see the separate operat-
ing instructions).
X To activate: press theÃrocker switch
up or down.
The indicator lamp in the Ãrocker
switch lights up.
X To switch to manual operation: press the
K rocker switch up or down.
or X Set the airflow using COMAND Online (see
the separate operating instructions). 142
Operating the climate control systemClimate control

or
X Set the air distribution using COMAND
Online (see the separate operating instruc-
tions).
The indicator lamp in rocker switch Ã
goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp
on the Ãrocker switch goes out. The func-
tion which has not been changed manually,
however, continues to be controlled automat- ically. When the manually set function
switches back to automatic mode, the indi-
cator lamp on the Ãrocker switch lights
up again. Setting the climate mode
In automatic mode you can select the follow-
ing 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 draught-free setting
X To set: set the climate mode using
COMAND Online (see the separate operat- ing instructions). Setting the temperature
General notes You can set the temperature separately for
the following areas:
R front footwells, left and right
R driver and front passenger area
Setting the temperature X
Turn the key to position 2in the ignition
lock (Y page 161).
X To increase or reduce: press thew
rocker switch up or down.
or X Set the temperature using COMAND Online
(see the separate operating instructions).
Only change the temperature setting in
small increments. Start at 22 †.
Setting the footwell temperature The footwell temperature for the driver and
front passenger can be set separately using
COMAND Online (see the separate operating
instructions). Setting the air distribution
Air distribution settings ¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs the airflow through the centre
and side air vents as well as the foot-
well air vents
a Directs the airflow through the foot-
well and demister vents
_ Directs the airflow through the demis-
ter vents, the centre and side air vents
as well as the footwell air vents Operating the climate control system
143Climate control

b
Directs the airflow through the centre
and side air vents as well as the demis-
ter vents
W Sets the air distribution to automatic
Setting the air distribution using
COMAND Online The air distribution for the left and right sides
of the driver and front passenger area can be adjusted using COMAND Online (see the sep-
arate operating instructions). Setting the airflow
General notes You can select different airflow settings for
the driver's and front-passenger sides.
Setting the airflow X
Turn the key to position 2in the ignition
lock (Y page 161).
X To increase or reduce: press theK
rocker switch up or down.
or X Set the airflow using COMAND Online (see
the separate operating instructions). Activating/deactivating the synchro-
nisation function
Climate control can be set centrally using the synchronisation function. The settings for
temperature, air distribution and airflow on
the driver's side are adopted for the front-
passenger side.
X To activate/deactivate: activate or deac-
tivate the synchronisation function using
COMAND Online (see the separate operat- ing instructions).
The synchronisation function switches off, if
the settings for the front-passenger side are
changed. Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the front side windows.
Switch off the windscreen demisting function
as soon as the windscreen is clear again.
X Turn the key to position 2in the ignition
lock (Y page 161).
X To switch on: press the¬rocker
switch on the front control unit up or down.
The indicator lamp in the ¬rocker
switch lights up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
R windscreen heating on
X To deactivate: press the¬rocker
switch up or down.
The indicator lamp in the ¬rocker
switch goes out. The previous settings are
reactivated. Air-recirculation mode
remains deactivated.
or X Press the Ãrocker switch up or down.
or
X Use the tor! rocker switch to call
up the COMAND Online climate control
menu. Demisting the windows
Windows misted up on the inside X
Vehicles with auxiliary heating: activate
the "Cooling with air dehumidification" 144
Operating the climate control systemClimate control

function via COMAND Online (see the sep-
arate operating instructions).
X Vehicles without auxiliary heating: acti-
vate the "Cooling with air dehumidification" function with the Árocker switch.
or
X Activate the "Cooling with air dehumidifi-
cation" function via COMAND Online (see
the separate operating instructions).
X Switch on automatic mode using the Ã
rocker switch.
X If the windows continue to mist up, activate
the windscreen demisting function using
the ¬ rocker switch. The windscreen
heating is switched on.
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Switch on automatic mode using the Ã
rocker switch.
i If you clean the windows regularly, they
do not mist up so quickly. Rear window heating
General notes The rear window heating has a high current
draw. You should therefore switch it off as
soon as the window is clear. It otherwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rear win-
dow heating may switch off.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 161).
X Press the ¤rocker switch up or down.
The indicator lamp in the ¤rocker
switch lights up or goes out. Operating the climate control system
145Climate control

Problems with the rear window heating
Problem
Possible causes/consequences and
M
MSolutions The rear window heat-
ing has switched off
prematurely or cannot
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 heat- ing 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 odours are
entering the vehicle from outside. The air
already inside the vehicle will then be recir-
culated.
If you activate air-recirculation mode, the win-
dows can mist up more quickly, in particular
at low temperatures. Only use air-recircula-
tion mode briefly to prevent the windows
misting up.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 161).
X To activate: press thegrocker switch
up or down.
The indicator lamp in the grocker
switch lights up.
Air-recirculation mode is automatically acti-
vated at high levels of pollution or at high out- side temperatures. The indicator lamp in the
g rocker switch is not lit when automatic
air-recirculation mode is activated. Outside
air is added after about 30 minutes.
X To deactivate: press thegrocker
switch up or down.
The indicator lamp in the grocker
switch goes out. Air-recirculation mode is deactivated auto-
matically:
R after approximately five minutes at outside
temperatures below approximately 5 †
R after approximately five minutes if "Cooling
with air dehumidification" is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 5 † if
the "Cooling with air dehumidification"
function is activated Convenience opening or closing using
the air-recirculation button G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos- ing window. There is a risk of injury.
Monitor the entire closing procedure when
using convenience closing. When closing,
make sure that no one has any parts of the
body within the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
When opening, make sure that nobody is
touching the side window. If someone
becomes trapped, press the Wswitch
immediately to open/close the side window
in the door. The side window stops. To con- 146
Operating the climate control systemClimate control

tinue closing the side window, pull on the
W switch.
X Convenience closing feature: press and
hold the grocker switch up or down
until the side windows are completely
closed.
The indicator lamp in the grocker
switch lights up. Air-recirculation mode is
activated.
If parts of the body are in the closing area
during convenience closing, proceed as fol-
lows: X Release the grocker switch.
The side windows stop.
X Press the Wbutton to open or close the
side windows.
Observe the notes on the automatic reversing
feature for the side windows (Y page 99).
X Convenience opening feature: press and
hold the grocker switch up or down
until the side windows are fully opened.
The indicator lamp the grocker switch
goes out. Air-recirculation mode is deacti-
vated. Switching the residual heat on/off
General notes 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 approximately
30 minutes.
The heating or ventilation time depends on
the temperature that has been set. Activating/deactivating X
Turn the key to position 0in the ignition
lock or remove it (Y page 161).
X To activate: press the!orÁ rocker
switch up or down.
The indicator lamp in the !orÁ
rocker switch lights up.
The blower will run at a low speed regardless of the airflow setting.
If you activate the residual heat function at
high temperatures, only the ventilation will be activated. The blower runs at medium speed.
X To deactivate: press the!orÁ
rocker switch up or down.
The indicator lamp in the !orÁ
rocker switch goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Perfume atomiser
Operating the perfume atomiser G
WARNING
If children open the perfume vial, they could
drink the perfume or it could come into con-
tact with their eyes. There is a risk of injury. Do not leave children unsupervised in the vehicle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience difficul-
ties, consult a doctor. H
Environmental note Full perfume vials must not
be disposed of with house-
hold rubbish. They must be
collected separately and dis-
posed of in an environmen- Operating the climate control system
147Climate control
Z

tally responsible recycling
system. Dispose of full perfume vials
in an environmentally
responsible manner and
take them to a special waste
collection point. :
Perfume lid
; Perfume vial
The perfume atomiser helps to improve driv-
ing comfort.
Using COMAND Online, you can:
R switch the perfume atomiser on or off
R regulate the perfume intensity (see the sep-
arate operating instructions)
The following conditions can affect your per-
ception of the perfume intensity:
R operating mode of the automatic climate
control
R interior temperature
R time of year or day
R air humidity
R physiological condition of occupants, e.g.
fatigue or hunger
The perfume atomiser can only be operated
when the automatic climate control is
switched on and is only active when the glove compartment is closed.
The perfume atomiser is provided with a pre- filled perfume vial. You can also choose froma variety of filled perfume vials and an empty
vial which you can fill yourself. If you refill an empty perfume vial, observe the
separate information sheet attached to the
vial.
! If you do not use genuine Mercedes-Benz
interior perfumes, observe the manufactur-
ers' safety notices on the perfume packag-
ing.
Do not refill the pre-filled perfume vial when it is empty. Dispose of the used vial after use.
X To insert the perfume vial: open the glove
compartment (Y page 317).
X Slide the perfume vial into the holder as far
as it will go.
X To remove the perfume vial: pull out the
perfume vial.
X To refill the perfume vial: unscrew the lid
of the empty perfume vial to refill it your-
self.
X Refill the vial with a maximum of 15 ml of
the desired liquid perfume.
X Screw the lid back on to the vial.
! Only refill the vial when you are outside
the vehicle. Otherwise, liquid perfume
could drip into the interior and contaminate it.
Always refill the empty refillable vial with the
same perfume. Otherwise, you might not ach-
ieve optimum results from the perfume atom-
iser. 148
Operating the climate control systemClimate control

Problems with the perfume atomiser
Problem
Possible causes/consequences and
M
MSolutions The vehicle interior is
not perfumed although
the perfume atomiser
has been activated. The perfume vial has not been pushed into the holder as far as it
will go.
X Slide the perfume vial into the holder as far as it will go. The perfume vial is not filled sufficiently.
X Pre-filled vials: dispose of the empty vial.
X Use a new pre-filled vial.
X Refillable vials: refill the vial with a maximum of 15 ml of the
same perfume. The perfume atomiser is faulty.
X Have the perfume atomiser checked at a qualified specialist
workshop. Ionisation
You can use the ionisation function to purify
the air in the vehicle interior and attain an
improved interior climate.
The ionisation of the interior air is odourless
and cannot, directly, be perceived in the vehi-
cle interior.
You can switch ionisation on or off using
COMAND Online (see the separate operating instructions).
Ionisation can only be switched on if the front
automatic climate control is activated. The
side air vent on the driver's side must be
open. Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries. You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac-
tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire. Operating the climate control system
149Climate control
Z