2014 MERCEDES-BENZ SL-CLASS ROADSTER coolant temperature

Switching the rear window
defroster on/of
f............................ 116
Switching the ZONE function on/
off .................................................. 116
Cockpit
Overview .......................................... 34
see Instrument cluster
COMAND
Display ........................................... 191
Examples of operation ...................197
Menu overview .............................. 192
COMAND controller ...........................196
COMAND control panel .....................195
COMAND display Driving conditions menu (AMG
vehicles) ........................................ 144
Driving conditions menu (except
AMG vehicles) ................................ 143
Combination switch ..........................108
Connecting a USB device see also Digital Operator's Manual 188
Consumption statistics (on-board
computer) .......................................... 161
Convenience telephony see also Digital Operator's Manual 188
Coolant (engine)
Checking the level .........................219
Display message ............................ 172
Filling capacity ............................... 277
Important safety notes ..................277
Temperature (on-board
computer) ...................................... 161
Temperature gauge ........................ 160
Warning lamp ................................. 183
Cooling
see Climate control
Copyright ............................................. 32
Cornering light function Display message ............................ 163
Function/notes ............................. 108
Crash-responsive emergency
lighting ............................................... 110
Cruise control Cruise control lever .......................133
Deactivating ................................... 133
Display message ............................ 163
Driving system ............................... 132Function/notes
............................. 132
Important safety notes ..................132
Selecting ........................................ 133
Setting a speed .............................. 133
Storing and maintaining current
speed ............................................ .133
Cup holder
Center console .............................. 206
Important safety notes ..................206
Customer Assistance Center (CAC) ...31
Customer Relations Department .......31 D
Dashboard lighting see Instrument cluster lighting
Data
see Technical data
Daytime running lamps
Display message ............................ 163
Function/notes .....................107, 108
Switching on/off (on-board
computer) ...................................... 161
Dealerships
see Qualified specialist workshop
Declarations of conformity ................. 30
Delayed switch-off Exterior lighting (on-board
computer) ...................................... 161
Interior lighting .............................. 161
Diagnostics connection ......................30
Digital Operator's Manual Contents .......................................... 24
Installation ....................................... 21
Introduction ..................................... 21
Keyword search ............................... 23
Operating notes ............................... 22
Visual search ................................... 22
Digital speedometer .........................161
Display (cleaning instructions) ........223
Display messages ASSYST PLUS ................................ 220
Calling up (on-board
computer) ...................................... 163
Driving systems ............................. 173
Engine ............................................ 172
General notes ................................ 163
Hiding (on-board computer) ...........163 Index
7

Steering (display message)
..............175
Steering wheel Adjusting (electrically) ...................102
Button overview ............................... 37
Buttons (on-board computer) ......... 160
Important safety notes ..................102
Paddle shifters ............................... 126
Storing settings (memory function) 103
Steering wheel (cleaning
instructions) ...................................... 223
Steering wheel paddle shifters ........126
Stopwatch (RACETIMER) ................... 161
Stowage areas ................................... 204
Stowage compartments Armrest (under) ............................. 204
Center console .............................. 204
Cup holders ................................... 206
Display message) ........................... 163
Eyeglasses compartment ...............204
Glove box ...................................... .204
Important safety information .........204
Stowage net ................................... 204
Stowage net ....................................... 204
Stowage space Center console (rear) .....................204
Umbrella holder ............................. 204
Stowage well beneath the trunk
floor .................................................... 206
Sun visor ............................................ 206
Surround lighting (on-board
computer) .......................................... 161
Suspension tuning Active Body Control (AMG vehicles) 144
Active Body Control (except AMG
vehicles) ........................................ 142
SETUP (on-board computer) ..........161
Switching air-recirculation mode
on/off ................................................. 116
Switching off the alarm (ATA) ............75
Systems settings (COMAND) see also Digital Operator's Manual 188 T
Tachometer ........................................ 160
Tail lamps Display message ............................ 163
see Lights Tank content
Fuel gauge ....................................... 35
Technical data
Capacities ...................................... 275
Information .................................... 274
Tires/wheels ................................. 268
Vehicle data ................................... 279
TELEAID
Call priority .................................... 211
Downloading destinations
(COMAND) ..................................... 207
Downloading routes .......................207
Emergency call .............................. 208
Geo fencing ................................... 207
Locating a stolen vehicle ...............207
MB info call button ........................210
Remote vehicle locking ..................207
Roadside Assistance button ..........209
Search & Send ............................... 207
Self-test ......................................... 207
Speed alert .................................... 207
System .......................................... 207
Triggering the vehicle alarm ........... 207
Vehicle remote malfunction
diagnosis ....................................... 207
Vehicle remote unlocking ..............207
Tele Aid
General notes ................................ 207
Telephone
Accepting a call ............................. 161
Menu (on-board computer) ............161
Number from the phone book ....... .161
Redialing ........................................ 161
Rejecting/ending a call .................161
see also Digital Operator's Manual 188
Telephone compartment ................204
Temperature
Coolant .......................................... 160
Coolant (on-board computer) ......... 161
Engine oil (on-board computer) ...... 161
Outside temperature ..................... .160
Setting (climate control) ................116
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........75
Immobilizer ...................................... 75
Timing (RACETIMER) .........................161
TIREFIT kit .......................................... 228 Index
17

Instrument cluster
Displays and controls
Function Page
:
Speedometer with
segments
~
;
Fuel gauge
=
Tachometer ~ Function Page
?
Coolant temperature ~
A
Multifunction display ~
B
Instrument cluster lighting ~Instrument cluster
35At a glance

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 30).Important safety notes
G
WARNING
If you operate information systems and
communication equipment integrated in the
vehicle while driving, you will be distracted
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the
equipment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or
malfunctioned, you may not recognize
function restrictions in systems relevant to
safety. The operating safety of your vehicle
may be impaired. There is a risk of an
accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop
immediately.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the multifunction display. You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y
page 35). Displays and operation
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
R Instrument lighting
R Coolant temperature display
R Tachometer
R Speedometer with segments
R Multifunction display
R Outside temperature display Operating the on-board computer
Overview :
Multifunction display
; Switches on the Voice Control System;
see the separate operating instructions
= Right control panel 160
Displays and operationOn-board computer and displays

Engine
Display messages Possible causes/consequences and
M
MSolutions ?
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
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.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 130).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 172
Display messagesOn-board computer and displays

Engine
Problem Possible causes/consequences and
M
MSolutions ?
The red coolant
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
The coolant temperature has exceeded 248 ‡ (120 †). The
airflow to the engine radiator may be blocked or the coolant level
may be too low.
G WARNING
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.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 130).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 219).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures below 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. Warning and indicator lamps
183On-board computer and displays Z

X
Replace cap :on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X Check the oil level again with the oil
dipstick (Y page 217).
Further information on engine oil
(Y page 276). Checking and adding other service
products
Checking coolant level G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape. Example X
Park the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 121).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 121).
X Check the coolant temperature gauge in
the multifunction display.
The coolant temperature must be below
158 ‡ (70 †).
X Turn the SmartKey to position
0(Y page 121) in the ignition lock.
X Slowly turn cap ;half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn cap ;further counter-clockwise and
remove it.
If the coolant is at the level of marker bar
= in the filler neck when cold, there is
enough coolant in coolant expansion
tank :.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar =in the fuel
filler neck when warm, there is enough
coolant in expansion tank :.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap ;and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 277).
Windshield washer system G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. Engine compartment
219Maintenance and care Z

Coolant
Important safety notes G
WARNING
If antifreeze comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Let the engine cool down before you add
antifreeze. 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 Service Products, MB Specifications for
Service Products 310.1, e.g. on the
Internet at
http://bevo.mercedes-benz.co m.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.
i Have the coolant regularly replaced at a
qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Comply with the important safety precautions
for service products when handling coolant
(Y page 275).
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.
i When the vehicle is first delivered, it is
filled with a coolant mixture that ensures
adequate antifreeze and corrosion
protection.
i The coolant is checked with every
maintenance interval at a qualified
specialist workshop.
Filling capacities Model Capacity
SL 550
Approx. 13.7 US qt
(13.0 l) SL 63 AMG
Approx. 11.6 US qt
(11.0 l) SL 65 AMG V12
Approx. 13.5 US qt
(12.8 l) i
Use antifreeze/corrosion inhibitor
according to MB approval 325.0 or 326.0. Service products and filling capacities
277Technical data Z