2014 MERCEDES-BENZ S-Class Owner's Manual

display in the rear-compartment display goes
out. The function which has not been changed
manually, however, continues to be
controlled automatically. When the manually
set function switches back to automatic
mode, the AUTO
AUTO display reappears in the rear-
compartment display. 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 that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUS Elow airflow that is set slightly
warmer and with less of a draft
X To set: set the climate mode using
COMAND (see the separate operating
instructions). Setting the temperature
General notes You can set the temperature separately for
the following areas on vehicles with rear-
compartment climate control:
R
front footwells, left and right
R driver and front passenger area
R rear compartment, left and right You can set the temperature separately for
the following areas on vehicles without rear-
compartment climate control:
R
front footwells, left and right
R driver's and front-passenger sides
Setting the temperature in the front
compartment using the front control
panel X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To increase/reduce: press the0082
rocker switch up or down.
or
X Set the temperature using COMAND (see
the separate operating instructions).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
Setting the temperature in the rear
compartment using the front control
panel Observe the notes on controlling the rear-
compartment climate control using the front
control panel (Y
page 155). Operating the climate control systems
159Climate control

X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X Press the top or bottom section of the
008A rocker switch.
The COMAND climate control menu opens.
X Select "Rear adjustment" in the air-
conditioning setting bar (see the separate
COMAND operating instructions).
You can control the rear-compartment
climate control using the front control
panel or COMAND.
X To increase/reduce: press the0082
rocker switch on the front control panel up
or down.
or
X Set the temperature using COMAND (see
the separate operating instructions).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
Setting the temperature in the rear
compartment using the rear control
panel X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To increase/reduce: press rocker
switch 0070or0076 up or down (Y page 153).
Only 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
COMAND (see the separate operating
instructions). Setting the air distribution
Air distribution settings 0061
Directs air through the defroster vents
009C Directs air through the center and side
air vents 009B
Directs air through the footwell air
vents
009F Directs air through the center, side and
footwell vents
0086 Directs air through the defroster and
footwell vents
00A2 Sets the air distribution to automatic
Setting the air distribution in the front/
rear compartment using COMAND The air distribution for the left and right sides
of the front and rear compartment can be
adjusted using COMAND (see the separate
operating instructions).
Setting the air distribution in the rear
compartment using the rear control
panel X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X Press rocker switch 0071or0075 up or down
repeatedly (Y page 153) until the desired
air distribution symbol is shown in the
display. Setting the airflow
Setting the front-compartment airflow
using the front control panel You can select different airflow settings for
the driver's and front-passenger sides as well
as for the rear compartment (only vehicles
with rear compartment climate control).
X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To increase/reduce: press the0097
rocker switch up or down.
or
X Set the airflow using COMAND (see the
separate operating instructions). 160
Operating the climate control systemsClimate control

Setting the rear compartment airflow
using the front control panel Observe the notes on controlling the rear-
compartment climate control using the front
control panel (Y page 155).
X Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X Press the top or bottom section of the
008A rocker switch.
The COMAND climate control menu opens.
X Select "Rear adjustment" in the air-
conditioning setting bar (see the separate
COMAND operating instructions).
You can control the rear-compartment
climate control using the front control
panel or COMAND.
X To increase/reduce: press the0097
rocker switch on the front control panel up
or down.
or
X Set the airflow using COMAND (see the
separate operating instructions).
Setting the rear compartment airflow
using the rear control panel X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To increase/reduce: press rocker switch
0073 up or down (Y page 153). Switching the synchronization
function on/off
Climate control can be set centrally using the
synchronization function. The settings for
temperature, air distribution and airflow on
the driver's side are adopted for the front-
passenger side and the rear compartment
(vehicles with rear-compartment air
conditioning).
X To activate/deactivate: switch the
synchronization function on or off using COMAND (see the separate operating
instructions).
Vehicles with rear-compartment air
conditioning: the
SYNC
SYNC display appears on
the rear-compartment display.
The synchronization function is deactivated:
R if the settings for the front-passenger side
are changed
R vehicles with rear-compartment air
conditioning: the settings for the rear
compartment are changed. Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the front side windows.
Switch off the "Windshield defrosting"
function as soon as the windshield is clear
again.
X Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To activate: press the0064rocker switch
on the front control unit up or down.
The indicator lamp in the 0064rocker
switch lights up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windshield and
front side windows
R air-recirculation mode off
R windshield heating on
X To deactivate: press the0064rocker
switch up or down.
The indicator lamp in the 0064rocker
switch goes out. The previously selected
settings are restored. Air-recirculation
mode remains deactivated.
or
X Press the 0058rocker switch up or down. Operating the climate control systems
161Climate control

or
X
Use the 008Arocker switch to call up the
COMAND climate control menu. Defrosting the windows
Windows fogged up on the inside X
Activate the "Cooling with air
dehumidification" function via COMAND
(see the separate operating instructions).
X Switch on automatic mode using the
0058 rocker switch.
X If the windows continue to fog up, activate
the "Windshield defrosting" function using
the 0064 rocker switch. The windshield
heating is switched on.
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers.
X Switch on automatic mode using the
0058 rocker switch.
i If you clean the windows regularly, they
do not fog up so quickly. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off. Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X Press the 006Crocker switch up or down.
The indicator lamp in the 006Crocker
switch lights up or goes out. 162
Operating the climate control systemsClimate control

Problems with the rear window defroster
Problem Possible causes/consequences and
0050
0050Solutions The rear window
defroster has
deactivated
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
defroster can be activated again. Activating/deactivating air-
recirculation mode
General notes You can also temporarily deactivate the flow
of fresh air manually if unpleasant odors are
entering the vehicle from outside. The air
already inside the vehicle will then be
recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To activate: press the0072rocker switch
up or down.
The indicator lamp in the 0072rocker
switch lights up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. The indicator
lamp in the 0072rocker switch is not lit
when automatic air-recirculation mode is
activated.
Outside air is added after about
30 minutes.
X To deactivate: press the0072rocker
switch up or down.
The indicator lamp in the 0072rocker
switch goes out. i
Air-recirculation mode deactivates
automatically:
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 dehumidification" function is
activated Activating/deactivating the residual
heat function
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 approximately 30 minutes. Operating the climate control systems
163Climate control

The heating or ventilation time depends on
the temperature that has been set.
Front control panel X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 171).
X To activate: press the004Brocker switch
up or down.
The indicator lamp in the 004Brocker
switch lights up.
X To deactivate: press the004Brocker
switch up or down.
The indicator lamp in the 004Brocker
switch goes out.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
Rear control panel X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 171).
REST appears in the rear compartment
display.
X To activate: press rocker switch 0074up or
down (Y page 153).
The indicator lamp in rocker switch 0074
lights up.
X To deactivate: press rocker switch 0074up
or down (Y page 153).
The indicator lamp in rocker switch 0074goes
out. REST goes out on the rear
compartment display.
i If you do not activate the residual heat
function, REST goes out automatically after
five minutes on the rear compartment
display. Residual heat is deactivated automatically:
R
after approximately 30 minutes if the
residual heat function is activated in the
front or rear compartment
R after approximately 15 minutes if the
residual heat function is activated in the
front and rear compartments
R when the ignition is switched on
R if the battery voltage drops Perfume atomizer
Operating the perfume atomizer G
WARNING
If children open the perfume vial, they could
drink the perfume or it could come into
contact 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
difficulties, consult a doctor. 0043
Perfume lid
0044 Perfume vial
The perfume atomizer helps to improve
driving comfort.
Using COMAND, you can:
R switch the perfume atomizer on and off
R regulate the perfume intensity
See the separate operating instructions. 164
Operating the climate control systemsClimate control

i
The following conditions can affect your
perception of the perfume intensity:
R operating mode of the automatic climate
control
R interior temperature
R time of year/day
R air humidity
R physiological condition of occupants,
e.g. fatigue or hunger
The perfume atomizer can only be operated
when the automatic climate control is
switched on.
The perfume atomizer is provided with a pre-
filled perfume vial. You can also choose from
a variety of filled perfume vials and an empty
vial which you can fill yourself.
! If you do not use genuine Mercedes-Benz
interior perfumes, observe the
manufacturers' safety notices on the
perfume packaging.
i 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
box (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
yourself.
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.
i Always refill the empty refillable vial with
the same perfume. Otherwise, you might not achieve optimum results from the
perfume atomizer. Operating the climate control systems
165Climate control Z

Problems with the perfume atomizer
Problem Possible causes/consequences and
0050
0050Solutions The vehicle interior is
not perfumed although
the perfume atomizer is
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 has not been adequately filled.
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 atomizer is faulty.
X
Have the perfume atomizer checked at a qualified specialist
workshop. Ionization
You can use the "Ionization" function to purify
the air in the vehicle interior and attain an
improved interior climate.
The ionization of the interior air is odorless
and cannot be perceived directly in the
vehicle interior.
You can switch ionization on and off using
COMAND (see the separate operating
instructions).
Ionization 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. Setting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air outlets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windshield
and the hood free of blockages, such as ice,
snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior. Setting the center air vents
0043
Fixed center air vent
0044 Center air vent, right 166
Setting the air ventsClimate control