2015 MERCEDES-BENZ S-CLASS COUPE window

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

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

Adjusting the centre air vents
:
Fixed centre air vent
; Centre air vents, right
= Centre vent control, right
? Centre vent control, left
A Centre air vents, left
X To open/close: press control=or?.
The control pops out.
X Turn control =or? to anti-clockwise or
clockwise.
X To adjust the air direction: hold rear air
vent ;orA by the middle fin and move up
or down or to the left or right. Adjusting the side air vents
:
Side window demister vent
; Side air vent
= Control for left side air vent X
To open/close: press control=.
The control pops out.
X Turn control =to anti-clockwise or clock-
wise.
X To adjust the air direction: hold side air
vent ;by the middle fin and move it up or
down or to the left or right. Adjusting the glove compartment air
vent
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu- midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartment could be damaged.
When automatic climate control is activated,
the glove compartment can be ventilated, for
instance to cool its contents. The level of air- flow depends on the airflow and air distribu-
tion settings. :
Air vent thumbwheel
; Air vent
X To open or close: turn control:to the
right or left. 156
Adjusting the air ventsClimate cont
rol

age the engine, the electronics or the trans-
mission.
If you must drive on stretches of road on
which water has collected, please bear in
mind that:
R in the case of standing water, the water
level must be no higher than the lower edge
of the vehicle body
R you should drive no faster than walking
pace Winter driving
G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified specialist workshop at the onset of winter.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres. Do
not use cruise control or DISTRONIC PLUS. If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
X Try to bring the vehicle under control by
using corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Further information on driving with snow
chains (Y page 379).
Further information on driving with summer
tyres (Y page 378).
Observe the notes in the "Winter operation"
section (Y page 378). Driving systems
Mercedes-Benz Intelligent Drive
Mercedes-Benz Intelligent Drive stands for
innovative driver assistance and safety sys-
tems which enhance comfort and support the
driver in critical situations. With these intelli-
gent co-ordinated systems Mercedes-Benz
has set a milestone on the path towards
autonomous driving.
Mercedes-Benz Intelligent Drive embraces all elements of active and passive safety in one
well thought-out system – for the safety of thevehicle occupants and that of other road
users.
Further information on driving safety systems (Y page 69). 188
Driving systemsDriving and parking

Display messages
Possible causes/consequences and
M
MSolutions 6
Left Left
windowbag
windowbag mal‐
mal‐
function Consult
function Consult
workshop workshoporRight Right
windowbag malfunc‐
windowbag malfunc‐
tion Consult work‐ tion Consult work‐
shop shop The left or right windowbag is malfunctioning.
The
6 warning lamp also lights up in the instrument cluster.
G WARNING
The left or right windowbag may either be triggered unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop. Display
messages
277On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions #
Stop vehicle See Stop vehicle See
Owner's Manual Owner's Manual The battery is no longer being charged and the battery charge level
is too low.
A warning tone also sounds.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 181).
X Observe the instructions in the #See Owner's Manual
See Owner's Manual
display message.
X Consult a qualified specialist workshop. #
Start engine See Start engine See
Owner's Manual Owner's Manual The engine is off and the battery charge level is too low.
X Switch off electrical consumers that you do not need, such as
the rear window heating and interior lighting.
X Leave the engine running for a few minutes, or drive for a longer
distance.
The battery charges. 4
Check eng. oil Check eng. oil
lev. when next lev. when next
refuelling refuelling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
! Avoid long journeys when there is too little coolant in the cool-
ing system. Otherwise the engine will be damaged.
X Check the oil level when next refuelling, at the latest
(Y page 340).
X If necessary, top up the engine oil (Y page 342).
X Have the engine checked at a qualified specialist workshop if the
engine oil needs topping up more often than usual.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.co m. Display
messages
285On-board computer and displays Z

Rear window roller sunblind
Important safety notes G
WARNING
When extending or retracting, parts of the
body could become trapped within the sweep of the roller sunblind. There is a risk of injury.
When extending or retracting, make sure that
no one has any parts of the body within the
sweep of the roller sunblind. If someone
becomes trapped, briefly press the button
again. The opening or closing process is
briefly stopped. The roller sunblind then
returns to its initial position.
! Make sure that the roller sunblind can
move freely. Otherwise, the roller sunblind
or other objects could be damaged.
At temperatures below Ò20†the roller sun-
blind cannot be operated.
Extending/retracting from the driver's
seat X
Turn the key to position 1or 2in the ignition
lock (Y page 161).
X To extend or retract: briefly press but-
ton :.
The roller sunblind fully extends or fully
retracts.
X To stop: briefly press button :again.
The roller sunblind stops briefly and
retracts into the out-of-use position. Ashtray
Front ashtray X
To open: briefly press marking ?.
Stowage compartment =opens.
X To remove the insert: grip the sides of
insert :, push it forward and pull it
upwards ;.
X To refit the insert: press insert:into the
drawer until it engages.
X To close: press stowage compartment =
closed until it locks. Cigarette lighter
Important safety notes G
WARNING
You can burn yourself if you touch the hot
heating element or the socket of the cigarette lighter.
In addition, flammable materials can ignite if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the knob.
Always make sure that the cigarette lighter is
out of reach of children. Never leave children unattended in the vehicle.
Your attention must always be focused on the traffic conditions. Only use the cigarette 324
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