2015 MERCEDES-BENZ S-Class COUPE coolant temperature

General notes ................................ 132
Indicator lamp ................................ 135
Ionization ...................................... .142
Notes on using the automatic cli-
mate control .................................. 133
Overview of systems ..................... .132
Perfume atomizer .......................... 140
Problem with the rear window
defroster ........................................ 139
Problems with cooling with air
dehumidification ............................ 135
Refrigerant ..................................... 396
Refrigerant filling capacity ............. 396
Setting the air distribution ............. 136
Setting the air vents ..................... .142
Setting the airflow ......................... 137
Setting the climate mode .............. .136
Setting the temperature ................ 136
Switching air-recirculation mode
on/off ............................................ 139
Switching on/off ........................... 134
Switching residual heat on/off ...... 139
Switching the rear window
defroster on/off ............................ 138
Switching the synchronization
function on and off ........................ 137
Climate control system
Automatic engine start .................. 152
Automatic engine switch-off .......... 151
Climate control .............................. 134
Deactivating/activating ................. 152
Important safety notes .................. 151
Introduction ................................... 151
Cockpit
Overview .......................................... 30
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 240
Display message ............................ 255
Operation/notes .............................. 68
COMAND display
Cleaning ......................................... 331
Combination switch .......................... 122
Consumption statistics (on-board
computer) .......................................... 232
Convenience closing feature .............. 95
Convenience opening feature ............ 95Coolant (engine)
Checking the level ......................... 322
Display message ............................ 263
Filling capacity ............................... 395
Important safety notes .................. 395
Temperature gauge ........................ 226
Warning lamp ................................. 287
Coolbox .............................................. 302
Cooling
see Climate control
Copyright ............................................. 28
Cornering light function
Display message ............................ 260
Function/notes ............................ .123
Crash-responsive emergency light-
ing ....................................................... 126
Crosswind Assist (vehicles with
MAGIC BODY CONTROL) ................... 190
Crosswind Assist (vehicles with-
out MAGIC BODY CONTROL) ...............72
Cruise control
Cruise control leve r .......................176
Deactivating ................................... 177
Display message ............................ 272
Driving system ............................... 175
Function/notes ............................ .175
Important safety notes .................. 175
Setting a speed .............................. 177
Storing and maintaining current
speed ............................................. 176
Cup holder
Center console .............................. 298
Important safety notes .................. 298
Rear compartment ......................... 299
Customer Assistance Center
(CAC) ..................................................... 26
Customer Relations Department ....... 26 D
Data see Technical data
Daytime running lamps
Display message ............................ 262
Function/notes ............................ .120
Switching on/off (on-board com-
puter) ............................................. 243
Declarations of conformity ................. 25 Index
7

Vehicle data ................................... 397
Telephone
Accepting a call (multifunction
steering wheel) .............................. 238
Display message ............................ 277
Introduction ................................... 237
Menu (on-board computer) ............ 237
Number from the phone book ........ 238
Redialing ........................................ 238
Rejecting/ending a call .................2 38
Temperature
Coolant .......................................... 226
Engine oil (on-board computer) ...... 245
Outside temperature ..................... .227
Setting (climate control) ................ 136
Tire pressure
Calling up (on-board computer) ..... 363
Checking manually ........................ 362
Display message ............................ 273
Important safety notes .................. 363
Maximum ....................................... 362
Not reached (TIREFIT) .................... 339
Notes ............................................. 361
Reached (TIREFIT) .......................... 340
Recommended ............................... 359
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 364
Function/notes ............................ .363
General notes ................................ 363
Important safety notes .................. 363
Radio type approval for the tire
pressure monitor ........................... 366
Restarting ...................................... 365
Warning lamp ................................. 290
Warning message .......................... 365
TIREFIT kit .......................................... 338
Tires
Aspect ratio (definition) ................. 376
Average weight of the vehicle
occupants (definition) .................... 375
Bar (definition) ............................... 375
Changing a wheel .......................... 377
Characteristics .............................. 375
Checking ........................................ 357
Curb weight (definition) ................. 376
Definition of terms ......................... 375
Direction of rotatio n...................... 378 Display message ............................ 273
Distribution of the vehicle occu-
pants (definition) ............................ 377
DOT (Department of Transporta-
tion) (definition) ............................. 375
DOT, Tire Identification Number
(TIN) ............................................... 374
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 375
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 376
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 376
Important safety notes .................. 356
Increased vehicle weight due to
optional equipment (definition) ...... 375
Kilopascal (kPa) (definition) ........... 376
Labeling (overview) ........................ 371
Load bearing index (definition) ...... 377
Load index ..................................... 374
Load index (definition) ................... 376
Maximum load on a tire (defini-
tion) ............................................... 376
Maximum loaded vehicle weight
(definition) ..................................... 376
Maximum permissible tire pres-
sure (definition) ............................. 376
Maximum tire load ......................... 374
Maximum tire load (definition) ....... 376
MOExtended tire s.......................... 358
Optional equipment weight (defi-
nition) ............................................ 377
PSI (pounds per square inch) (def-
inition) ........................................... 376
Replacing ....................................... 377
Service life ..................................... 358
Sidewall (definition) ....................... 377
Speed rating (definition) ................ 376
Storing ........................................... 378
Structure and characteristics
(definition) ..................................... 375
Summer tires in winter .................. 358
Temperature .................................. 371
TIN (Tire Identification Number)
(definition) ..................................... 377
Tire bead (definition) ...................... 377
Tire pressure (definition) ................ 376
Tire pressures (recommended) ...... 375 18
Index

Instrument cluster
Displays
Function Page
0043
Speedometer
0044
Multifunction display with
outside temperature dis-
play 228
0087
Tachometer 226 Function Page
0085
Coolant temperature 226
0083
Fuel level and fuel filler flap
location indicator 00B6 Fuel filler flap location indicator
00B6: the fuel
filler cap is on the right-hand side. Instrument cluster
31At a glance

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment 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 special-
ist workshops (Y page 25). Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle 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 equip-
ment when the vehicle is stationary.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, 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.
Pull over as soon as it is safe to do so and
consult a qualified specialist workshop. G
WARNING
If the instrument cluster has failed or mal-
functioned, 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 immedi-
ately.
If the operating safety of your vehicle is
impaired, pull over as soon as it is safe to do
so. Contact a qualified specialist workshop.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all
times.
For an overview, see the instrument panel
illustration (Y page 31). Displays and operation
Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Coolant temperature display
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! A display message is shown if the coolant
temperature is too high. 226
Displays and operationOn-board computer and displays

If the coolant temperature is above 257 ‡
(125 †) do not drive any further. The
engine will otherwise be damaged.
The coolant temperature is displayed in the
lower section of the tachometer (Y page 31).
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 255 ‡ (124 †). Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the temperature measured
and does not record the road temperature.
The outside temperature display is in the mul- tifunction display (Y page 228).
Changes in the outside temperature are dis-
played after a short delay. Operating the on-board computer
0043
Multifunction display
0044 Right control panel
0087 Left control panel X
To activate the on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
Left control panel 00E2 R
Calls up the main menu 0063
0064 Press briefly:
R Scrolls in lists
R Selects a menu or function
R In the Radio Radio/ Media
Mediamenu:
opens the track or station list
and selects an audio track or
video scene
R In the Telephone Telephone menu:
switches to the phone book and
selects a name or a telephone
number 0063
0064 Press and hold:
R Rapid scrolling in all lists
R In the Radio Radio/Media Mediamenu:
selects a station, audio track or
video scene using rapid scrolling
R In the Telephone Telephone menu: starts
rapid scrolling if the phone book is open 0076 R
In all menus: confirms the selec-
ted entry in the list
R In the Radio
Radio/ Media
Mediamenu:
opens the list of available radio
sources/media
R In the Telephone Telephone menu:
switches to the phone book and
starts dialing the selected num-
ber 00E1
Switches off the Voice Control Sys-
tem; see the separate operating
instructions Displays and operation
227On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions Adaptive Highbeam
Adaptive Highbeam
Assist Assist
Plus
PlusInoper‐
Inoper‐
ative
ative Adaptive Highbeam Assist Plus is faulty.
X Visit a qualified specialist workshop. Adaptive Highbeam
Adaptive Highbeam
Assist Plus Cur‐ Assist Plus Cur‐
rently rently
Unavailable
Unavailable
See
See Operator's
Operator's Man‐
Man‐
ual
ual Adaptive Highbeam Assist Plus 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, display
message Adaptive
Adaptive Highbeam HighbeamAssist
AssistPlus
PlusAvailable
Available Again
Again
is displayed.
Adaptive Highbeam Assist Plus is operational again. Engine
Display messages
Possible causes/consequences and
0050 0050Solutions 00BD
Check Coolant Check Coolant
Level See Opera‐ Level See Opera‐
tor's Manual tor'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 322).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop. 00AC 00AC The fan motor is faulty.
X At coolant temperatures below 257 ‡ (125 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. Display
messages
263On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
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 (Y page 166).
X Wait 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 257 ‡ (125 †). Other-
wise, 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 255 ‡ (124 †). 003D
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
! Do not continue driving. The engine could otherwise overheat.
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 166).
X Consult a qualified specialist workshop. 264
Display
messagesOn-board computer and displays

Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00AC
0051
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gage is at the start of the bar display.
The temperature sensor for the coolant temperature gage is defective.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine, paying
attention to road and traffic conditions. Do not continue driving under any
circumstances.
X Secure the vehicle against rolling away (Y page 166).
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
287On-board computer and displays Z