2017 MERCEDES-BENZ S-Class CABRIOLET cooling

iIf 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 or deactivating
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XPress the ¤rocker switch up or down.
The indicator lamp in the ¤rocker switch
lights up or goes out.
Problems with the rear window defroster
ProblemPossible causes/consequences and MSolutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.The battery has not been sufficiently charged.
XSwitch 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.
When the soft top is open, air-recirculation
mode is deactivated and cannot be activated
manually.
Activating/deactivating
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo activate: press thegrocker switch up
or down.
The indicator lamp in the grocker switch
lights up. Air-recirculation mode switches on automati-
cally:
Rat high outside temperatures
Rat high levels of pollution
Rin a tunnel
The indicator lamp in the grocker switch is
not lit when automatic air-recirculation mode is
activated. Outside air is added after about
30 minutes.
XTo deactivate: press thegrocker switch
up or down.
The indicator lamp in the grocker switch
goes out.
Air-recirculation mode deactivates automati-
cally:
Rafter approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
Rafter approximately five minutes if cooling
with air dehumidification is deactivated
Rafter approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with air dehumidifica-
tion" function is activated
Operating the climate control systems119
Climate control

Engine
Display messagesPossible causes/consequences andMSolutions
+
CheckCoolantLevelSee Operator's Man‐ual
The coolant level is too low.
!Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
XAdd coolant, observing the warning notes before doing so
(Ypage 276).
If you have to add coolant frequently:
XContact a qualified specialist workshop and have the engine cooling
system checked.
?The fan motor is malfunctioning.
XAt coolant temperatures below 257 ‡(125 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic.
?
Coolant Too HotStop Vehicle TurnEngine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to catch
fire.
Steam from the overheated engine can also cause serious burns which
can occur just by opening the hood.
There is a risk of injury.
XPull over and stop the vehicle safely and switch off the engine, pay- ing attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 140).
XWait until the engine has cooled down.
XMake sure that the air supply to the engine radiator is not blocked,e.g. by snow, slush or ice.
XDo not start the engine again until the display message goes out and
the coolant temperature is below 257 ‡ (125 †). Otherwise, the
engine could be damaged.
XPay attention to the coolant temperature gauge.
If the temperature increases again:
XVisit a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 255 ‡ (124 †).
Display messages217
On-board computer and displays
Z

Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be defective.
The coolant is too hot and the engine is no longer being cooled sufficiently.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 140).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 276).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature is below 257 ‡
(125 †). Otherwise, the engine could be damaged.
XDrive to the nearest qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?N The red coolant warning lamp comes on while the engine is running. A warning
tone also sounds.
The coolant temperature has exceeded 255 ‡(124 †). The airflow to the engine
radiator may be blocked or the coolant level may be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can also cause serious burns which can occur
just by opening the hood.
There is a risk of injury.
XObserve the additional display messages in the multifunction display.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 140).
XLeave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 276).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
Warning and indicator lamps in the instrument cluster239
On-board computer and displays
Z

:Adjusts temperature, airflow and air distri-
bution, left, as well as displaying the current
setting
;Calls up the climate control menu, displays
the current cooling and climate mode set-
ting
=Adjusts air distribution, airflow and temper-
ature on the right and displays the current
settings
There may be fewer settings or none depending
on your vehicle's equipment.
Calling up the climate control bar
Multimedia system:
XSelect Vehicle.
The vehicle menu is displayed.
XSlide 6the controller repeatedly until the
climate control bar is activated.
Calling up the climate control menu
Multimedia system:
XSelect Vehicle.
The vehicle menu is displayed.
XSlide 6the controller repeatedly until the
climate control bar is activated.
XTo select from climate control bar ;: turn
and press the controller.
The menu for selecting climate control func-
tions is activated.
XTo select a climate function: turn and press
the controller.
The selected climate control function
appears.
Settings in the climate menu
Adjusting the climate mode settings
The climate mode determines the type of air-
flow. When the air-conditioning system is set to
Ã, the setting is active (
Ypage 117).
XCall up the climate control menu
(Ypage 248).
XTo selectClimate Mode: turn and press the
controller.
XTo change sides: slide the controller left
8 or right 9
XTo change the setting: turn the controller.
XTo exit the menu:press the%button.
The climate mode bar displays the current air-
flow setting: DIFFUSE
,MEDIUMor FOCUS.
Starting/stopping the perfume atomizer
The perfume atomizer makes it possible to scent
the air in individual compartments in the vehicle
interior. Further information (
Ypage 120).
XCall up the climate control menu
(Ypage 248).
XTo selectAirFreshener: turn and press the
controller.
The setting element is active.
XTo start/stop the perfume atomizer: press
the controller.
XTo set the intensity: turn the controller when
the atomizer is switched on.
XTo exit the menu: press the%button.
Switching the ionization on/off
The ionization has a cleansing effect on the air in
the vehicle interior. Further information
(
Ypage 121).
XCall up the climate control menu
(Ypage 248).
XTo selectIonization: turn and press the
controller.
The setting element is active.
XTo switch the ionization on or off: turn the
controller.
XTo exit the menu: press the%button.
248Operating system
Multimedia system

Adjusting thefootwell temperature
XCall up th eclimat econtrol men u
(Ypage 248).
XTo select Adjust Footwell:tur nand press
th econtroller.
XTo change sides: slide1 thecontroller.
XTo change th esetting: turnth econtroller.
XTo exit th emenu: press th e% button.
Settings in the bottom bar of the cli-
mate control menu
Switching cooling with air dehumidifica-
tion on/off
iActivating th ecoolin gwit hair dehumidifi-
cation facilitate sth ecoolin gof th evehicl e
interio reve nwit hhigh outside temperatures .
XCall up theclimat econtrol men u
(Ypage 248).
XSlide 6thecontroller repeatedly until th e
botto mbar is activated.
XTo select OA/C:tur nand press th econ-
troller .
XThe coolin gwit hair dehumidification function
is activated Oor deactivate dª.
iThe curren tstatus of th ecoolin gfunction is
displayed in th eclimat econtrol bar: A/ C ON
– activated, A/ C OFF –deactivated.
iDeactivating th ecoolin gwit hair dehumidi-
fication function reduce sfuel consumption .
Synchronizingthe climate control set-
tings
Use OSync(synchronization) to select th ecli -
mat econtrol settin gfor all zone stogether Oor
separately ª.
XCall up theclimat econtrol men u
(Ypage 248).
XSlide 6thecontroller repeatedly until th e
botto mbar is activated.
XTo select OSync:tur nand press th econ-
troller .
XThe synchronizatio nfunction is activated O
or deactivate dª. Wit
hth esynchronizatio nfunction switched off ,
you can alternate between driver and fron t
passenger .
XTo switch from th efoote rto th emain area:
slide 5thecontroller.
XTo switch between left and right :slide 1
th econtroller.
Not all climat econtrol function sallow switch -
ing between th edriver and fron tpassenger .
Fo rfurther information on synchronizing climat e
control settings, see (
Ypage 118).
Navigation mode
Important safety notes
GWARNIN G
If you operate information systems and com-
munication equipmen tintegrate din th evehi-
cle while driving ,you will be distracte dfrom
traffic conditions. You could also lose control
of th evehicle. Ther eis aris kof an accident.
Only operate th eequipmen twhen th etraffic
situation permits. If you are no tsure that this
is possible, park th evehicl epayin gattentio n
to traffic condition sand operate th eequip-
men twhen th evehicl eis stationary.
You must observ eth elegal requirements for th e
country in whic hyou are currently driving when
operating th enavigation system.
General notes
Amon gother things, correct functioning of th e
navigation system depend son GPS reception .In
certai nsituations, GPS reception may be
impaired ,there may be interferenc eor there
may be no reception at all, e.g. in tunnels or
parking garages.
Further information can be foun din th eDigita l
Operator's Manual.
Selecting a route type and route options
Multimedia system:
XSelec tNav iQNavigation.
The map shows th evehicle's curren tposition.
XSlide 6thecontroller.
Operating system249
Multimedia system
Z

Filling capacities
The followingvalue srefer to an oil chang e
includin gth eoil filter.
ModelCapacit y
Mercedes ‑AMG
S 63 4MATIC9.0US qt (8.5l)
Mercedes‑AMG
S 6511.1 US qt (10.5 l)
Allot her models8.5 US qt (8.0 l)
Additives
!Do not use any additives in the engine oil.
This could damage the engine.
Brake fluid
GWARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
Comply with the important safety notes for ser-
vice products when handling brake fluid
(
Ypage 329).
The brake fluid change intervals can be found in
the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz according to MB-Freigabe or MB-Approval
331.0.
Information about approved brake fluid can be
obtained at any qualified specialist workshop or on the Internet at
http://bevo.mercedes-benz.co m.
iHave the brake fluid regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Coolant
Important safety notes
GWARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. Make sure that antifreeze is not spilled
next to the filler neck. Thoroughly clean the
antifreeze from components before starting
the engine.
!Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
Further information on coolants can be found
in the Mercedes-Benz Specifications for Ser-
vice Products, MB BeVo 310.1, e.g. on the
Internet at http://bevo.mercedes-benz.com.
Or contact a qualified specialist workshop.
!Always use a suitable coolant mixture, even
in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
iHave the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
RAnti-corrosion protection
RAntifreeze protection
RRaising the boiling point
If the coolant has antifreeze protection down to
-35 ‡ (-37 †), the boiling point of the coolant
during operation is approximately 266 ‡
(130 †).
The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should:
Rbe at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection down
to -49 ‡ [-45 †]). Otherwise, heat will not be
dissipated as effectively.
332Service products and filling capacities
Technical data