2015 MERCEDES-BENZ S-Class COUPE coolant level

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

Unlocking (in an emergency) ........... 86
Unlocking (SmartKey) ......................79
Vehicle data ................................... 397
Vehicle dimensions ........................... 397
Vehicle emergency locking ................ 87
Vehicle identification number
see VIN
Vehicle identification plate .............. 390
Vehicle level
Active Body Control ABC ............... 190
Display message ............................ 267
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit .................................. 336
Video
Operating the DVD .........................2 37
VIN ...................................................... 390 W
Warning and indicator lamps ABS ................................................ 281
Brakes .......................................... .280
Check Engine ................................. 286
Coolant .......................................... 287
Distance warning ........................... 289
ESP ®
.............................................. 283
ESP ®
OFF ....................................... 284
Fuel tank ........................................ 286
Overview .......................................... 32
Parking brake ................................ 285
PASSENGER AIR BAG ..................... .43
Reserve fuel .................................. .286
Restraint system ............................ 285
Seat belt ........................................ 279
Steering ......................................... 291
Tire pressure monitor .................... 290
Warranty .............................................. 22
Washer fluid
Display message ............................ 277
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 382
Wheel chock ...................................... 378
Wheels
Changing a wheel .......................... 377
Checking ........................................ 357
Cleaning ......................................... 328 Important safety notes .................. 356
Interchanging/changing ................ 377
Mounting a new wheel ................... 381
Mounting a wheel .......................... 378
Removing a wheel .......................... 381
Storing .......................................... .378
Tightening torque ........................... 382
Wheel size/tire size ....................... 382
Window curtain air bag
Operation ......................................... 51
Windows
see Side windows
Windshield
Defrosting ...................................... 137
Infrared reflective .......................... 315
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 323
Notes ............................................. 396
Windshield wipers
Problem (malfunction) ................... 129
Replacing the wiper blades ............ 127
Switching on/off ........................... 126
Winter driving
Important safety notes .................. 358
Slippery road surfaces ................... 174
Snow chains .................................. 359
Winter operation
Summer tires ................................. 358
Winter tires
M+S tires ....................................... 358
Wiper blades
Cleaning ......................................... 329
Important safety notes .................. 127
Replacing ....................................... 127
Wooden trim (cleaning instruc-
tions) ................................................. .332
Workshop
see Qualified specialist workshop 20
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

Problems with the engine
Problem
Possible causes/consequences and
0050
0050Solutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go out.
X Try to start the engine again (Y page 149). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 345).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. The coolant tempera-
ture gage shows a value
above 248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 322). Observe the warning
notes as you do so and add coolant if necessary. 154
DrivingDriving and parking

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 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 malfunctioning.
The coolant is too hot and the engine is no longer being cooled sufficiently.
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 166).
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 322).
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 Do not start the engine again until the coolant temperature is below 257 ‡
(125 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in mountainous
terrain, and stop-and-go traffic. 00AC
0051
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.
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 166).288
Warning and indicator lamps in the instrument clusterOn-board computer and displays