2013 MERCEDES-BENZ SL-CLASS ROADSTER cooling

Switching the ZONE function on/off
X
To switch on: press the á button.
The indicator

lamp in the á button lights
up. The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To switch off: press the á button.
The indicator

lamp in the á button goes
out. The temperature setting for the
driver's side is adopted for the front-
passenger side. Defrosting the windshield
Example:
¬ button
You can use this function to defrost the
windshield or to demist the inside of the
windshield and the side windows.
Switch off

the defrosting function as soon as
the windshield is clear again. X
Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the ¬ button.
The indicator

lamp in the ¬ button lights
up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow (depending on the outside
temperature)
R high temperature (depending on the
outside temperature)
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To switch off: press the ¬ button.
The indicator

lamp in the ¬ button goes
out. The previously selected settings come
into effect again. The cooling with air
dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
X Press the à button.
The indicator

lamp in the ¬ button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn temperature control : or D
clockwise or counter-clockwise.
or
X Press the K or I button. MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA. 128
Operating the climate control systems
Climate control

MAX COOL is only operational when the
engine is running.
X
To activate: press the Ù button.
The indicator lamp in the button lights up.
X To deactivate: press the Ù button
again.
The indicator
lamp goes out. The previously
selected settings come into effect again.
When you activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the ¿ cooling with air
dehumidification function.
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function (Y

page 128).
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 Press the _ button repeatedly until the
P or O symbol appears in the
display.
i You should only select this setting until
the windshield is clear again. Rear window defroster
Activating/deactivating G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others. The rear window defroster 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
window defroster may switch off.
X
Turn the SmartKey to position 2 in the
ignition lock.
X Press the ¤ button.
The indicator

lamp in the ¤ button lights
up or goes out.
Problems with the rear window
defroster The rear window defroster has deactivated
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Operating the climate control systems
129
Climate control Z

Activating/deactivating air-
recirculation mode
G
WARNING
At low outside temperatures, only switch over
to air-recirculation mode for brief periods.
Otherwise, the windows could fog up, thus
impairing visibility and endangering yourself
and others. This may prevent you from
observing the traffic conditions and thereby
cause an accident. X
Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the g button.
The indicator

lamp in the g button lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-
recirculation mode is activated
automatically, the indicator lamp in the
g button is not lit.
Outside air

is added after about 30minutes.
X To switch off: press the g button.
The indicator

lamp in the g button 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 †) Activating/deactivating the residual
heat function
The residual

heat function is only available on
vehicles for Canada. It
is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine

has been switched off. The heating
time depends on the temperature that has
been set.
X Turn the SmartKey to position 0 in the
ignition lock or remove it.
X To activate: press the Ì button.
The indicator

lamp in the Ì button lights
up.
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 130
Operating the climate control systems
Climate control

At high outside temperatures, open the air
vent and activate the "cooling with air
dehumidification" function. Otherwise,
temperature-sensitive items stored in the
glove box could be damaged.
:
Air vent thumbwheel
; Air vent
When automatic climate control is activated,
the glove box can be ventilated, for instance
to cool its contents. The level of airflow
depends on the airflow and air distribution
settings.
X To open/close: turn thumbwheel :
clockwise or counterclockwise. AIRSCARF, setting the vents
G
WARNING
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending
on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin. You can adjust the blower output of
AIRSCARF vents
: using the AIRSCARF
button ( Y page 101).132
Setting the air vents
Climate control

Display messages Possible causes/consequences and
M Solutionsb
Auto
Lamp
Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop. b
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to Ã. Adaptive Highbeam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily
inoperative. Possible causes are:
R
the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Clean the windshield.
If the system detects that the camera is fully operational again,
the Adaptive Highbeam Assist Now Available message is
displayed.
Adaptive Highbeam Assist is operational again. Engine
Display messages Possible causes/consequences and
M Solutions+
Check Coolant
Level See
Operator's Manual 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.
X Add coolant, observing the warning notes before doing so
(Y page 498).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. ? The fan motor is faulty.
X
At coolant temperatures under 248 ‡(120 †), drive
to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.238
Display messages
On-board computer and displays

Climate control status display
The climate status display in the COMAND display
(example)
If you change the settings of the climate
control system, the climate status display
appears for three seconds at the bottom of
the screen in the COMAND display. You will
see
the
current settings of the various climate
control functions.
Overview of climate control systems
(Y page 122).
The climate status display appears when:
X You turn one of the two temperature
controls and

set the temperature to the left
or right.
or
X You press one of the following buttons:
K Increases air flow
I Decreases air flow
¿ Switches climate control on/off
á Switches the ZONE function on/off
à Controls the air conditioning
automatically
ñ Sets the climate control style in
automatic mode (FOCUS/MEDIUM/
DIFFUSE)
_ Sets the air distribution
¬ Turns on the defrost function
Ù Turns on maximum cooling Example settings for the defrost function (top) and
for the climate mode in automatic mode
X
To hide the display: turn or press the
COMAND controller.
or
X Press one of the buttons on COMAND.
Displaying the image from the rear view
camera G
WARNING
The rear view camera is only an aid and may
show a distorted view of obstacles, show
them incorrectly or not at all.
Further information on the rear view camera
(Y page 190).
The image from the rear view camera is
shown in the COMAND display when reverse
gear is engaged if:
R your vehicle is equipped with a rear view
camera.
R COMAND is switched on
R the Activation by R gear function is
activated.
If the function is activated, the COMAND
display will automatically switch back to the
previously selected display as soon as you
shift out of reverse gear.
i Further information on the rear view
camera ( Y page 190).
X Press the W function button.
The system menu appears.
X Select Settings by turning cVd the
COMAND controller and press W to
confirm. 276
At a glance
COMAND

Adding engine oil
G
WARNING
If engine oil comes into contact with hot
engine parts,
it may ignite and you could burn
yourself. Do not spill any engine oil on hot
engine parts. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Use only engine oils and oil filters that
have been approved for vehicles equipped
with a service system. A list of the engine
oils and oil filters tested and approved in
accordance with the Mercedes-Benz
Specifications for Service Products can be
called up by visiting http://
www.mbusa.com (USA only). More
information about tested and approved
engine oils and oil filters is available from
any authorized Mercedes-Benz Center.
Damage to

the engine or exhaust system is
caused by the following:
R using engine oils and oil filters which
have not been specifically approved for
the service system.
R replacing the engine oil or oil filter after
the replacement interval required by the
service system has elapsed
R using engine oil additives.
! Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic
converter. Have excess oil siphoned off. Example: engine oil cap
X
Turn cap : counter-clockwise and remove
it.
X Add the amount of oil required.
Fill carefully to the maximum mark on the
oil dipstick.
X Replace cap :

on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely.
i The difference between the minimum
mark and the maximum mark on the oil
dipstick is approximately 1.4 US qt (

1.3l).
i Further information on engine oil
(Y page 562). Checking and adding other service
products
Checking the coolant level G
WARNING
In order to avoid potentially serious burns:
R use extreme caution when opening the
hood if there are any signs of vapor or
coolant leaking

from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
R do not remove the pressure cap on the
coolant tank if the coolant temperature is
above 158 ‡ (70 †). Allow the engine to
cool down before removing the cap. The
coolant tank contains hot fluid and is under
pressure.498
Engine compartment
Maintenance and care

If antifreeze comes into contact with hot
engine
parts,
it may ignite and you could burn
yourself. Do not spill any antifreeze on hot
engine parts.
! 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 Service Products, MB Specifications for
Service Products 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.
The coolant is a mixture of water and
antifreeze/corrosion inhibitor. It performs
the following tasks:
R corrosion protection
R antifreeze protection
R raising 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/corrosion inhibitor
concentration in the engine cooling system
should:
R be at least 50 %. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
R not exceed 55 % (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat
will not be dissipated as effectively.
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor. Mercedes-Benz recommends an
antifreeze/corrosion inhibitor concentrate in accordance with MB Specifications for
Service Products 310.1.
The coolant is checked with every
maintenance interval at a qualified specialist
workshop.
i
When the vehicle is first delivered, it is
filled with a coolant mixture that ensures
adequate antifreeze and corrosion
protection.
Capacity Model Capacity
SL 550
BlueEFFICIENCY
Approximately
15.3 US qt (14.5 l) SL 63 AMG
Approximately
15.2 US qt (14.4 l) SL 65 AMG
Approximately
13.5 US qt (12.8 l)
Low-temperature circuit:
approximately
3.7 US qt

(3.5 l) i
Use antifreeze/corrosion inhibitor
according to MB approval 325.0 or 326.0. Windshield/headlamp cleaning
system
G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on

hot engine parts, because it may
ignite and burn. You could be seriously
burned.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps. 564
Service products and filling capacities
Technical data