open bonnet MERCEDES-BENZ S-CLASS COUPE 2015 Owners Manual

B
BAS (Brake Assist System) ................. 70
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/note s................................ 71
Important safety notes .................... 71
Battery (key)
Checking .......................................... 88
Important safety notes .................... 87
Replacing ......................................... 88
Battery (vehicle)
Charging ........................................ 364
Display message ............................ 284
Important safety notes .................. 362
Jump starting ................................. 366
Belt
see Seat belts
Belt tensioner
Activation ......................................... 57
Blind Spot Assist
see Active Blind Spot Assist
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 338
Closing ........................................... 340
Display message ............................ 299
Important safety notes .................. 338
Opening ......................................... 339
Boot
Emergency release .......................... 98
Important safety notes .................... 94
Locking separately ........................... 98
Opening/closing (automatically
from inside) ...................................... 97
Opening/closing (automatically
from outside) ................................... 95
Opening/closing (from the out-
side, HANDS-FREE ACCESS) ............ 96
Power closing .................................. 92
Boot lid
Display message ............................ 299
Obstacle recognition ........................ 94
Opening dimensions ...................... 410
Opening/closing .............................. 94
Boot load (maximum) ........................ 410
Brake
EBD .................................................. 77 Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 273
Notes ............................................. 408
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 75
Display message ............................ 281
Brakes
ABS .................................................. 70
Adaptive Brake Assist ...................... 74
BAS .................................................. 70
BAS PLUS with Cross-Traffic
Assist ............................................... 71
Brake fluid (notes) ......................... 408
Display message ............................ 267
Driving tips .................................... 186
High-performance brake system .... 187
Hill start assist ............................... 164
HOLD function ............................... 205
Important safety notes .................. 186
Parking brake ................................ 183
Warning lamp ................................. 304
Breakdown
Where will I find...? ........................ 356
see Flat tyre
see Towing away
Brightness control (instrument
cluster lighting) ................................... 34
Buttons on the steering column ...... 245 C
Calling up a fault see Display messages
Camera
see 360° camera
see Reversing camera
Capacities (technical data) ............... 404
Car
see Vehicle
Car key
see Key
Car wash (care) ................................. 3456
Index

Cockpit
Function Page
:
Steering wheel gearshift
paddles
174
;
Combination switch 128
=
Horn
?
Instrument cluster 32
A
DIRECT SELECT lever 169
B
Overhead control panel 38
C
Control panel for:
Ü
Lowering the rear
seat head restraints 112
u
Extending/retracting
the rear roller sunblind 324
Moves the seat-belt
extender forwards 46
PASSENGER AIRBAG indi-
cator lamp
43
Adjusting the brightness of
the instrument lighting and
the COMAND display D
Climate control systems 138
E
Ignition lock 161
Start/Stop button 161 Function Page
F
Adjusts the steering wheel 116
Steering wheel heating 117
G
Cruise control lever 189
H
Electric parking brake 183
I
Diagnostics connection 25
J
Opens the bonnet 339
K
Light switch 126
L
Control panel for:
Activating Steering Assist
and Stop&Go Pilot
203
Activating Active Lane
Keeping Assist 239
Deactivating PARKTRONIC 212
Activating the 360° camera 224
Activating Night View
Assist 232
Switching on the head-up
display
24730
CockpitAt a glance

Function Page
:
Overhead control panel 38
;
Combination switch 128
=
Horn
?
Instrument cluster 32
A
DIRECT SELECT lever 169
B
Steering wheel gearshift
paddles
174
C
Opens the bonnet 339
D
Diagnostics connection 25
E
Control panel for:
Activating Steering Assist
and Stop&Go Pilot 203
Control panel for:
Activating Steering Assist
and Stop&Go Pilot
203
Activating Active Lane
Keeping Assist
239
Deactivating PARKTRONIC 212
Activating the 360° camera 224
Activating Night View
Assist
232
Switching on the head-up
display
247 Function Page
F
Light switch 126
G
Electric parking brake 183
H
Ignition lock 161
Start/Stop button 161
I
Adjusts the steering wheel 116
Steering wheel heating 117
J
Cruise control lever 189
K
Climate control systems 138
L
Control panel for:
Ü
Lowering the rear
seat head restraints 112
u
Extending/retracting
the rear roller sunblind 324
Moves the seat-belt
extender forwards
46
PASSENGER AIRBAG indi-
cator lamp
43
Adjusting the brightness of
the instrument lighting and
the COMAND display Cockpit
31At a glance

The braking action of PRE-SAFE
®
Brake is
ended automatically if:
R you manoeuvre to avoid the obstacle
R there is no longer a risk of collision
R there is no longer an obstacle detected in
front of your vehicle STEER CONTROL
General notes STEER CONTROL helps you by transmitting a
noticeable steering force to the steering
wheel in the direction required for vehicle
stabilisation.
This steering support is provided in particular
if:
R both right wheels or both left wheels are on
a wet or slippery road surface when you
brake
R the vehicle starts to skid
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 69).
No steering support is provided from STEER
CONTROL, if:
R ESP ®
is malfunctioning
R the steering is faulty
Power steering will, however, continue to
function. Protection against theft
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key.
X To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
X To deactivate: switch on the ignition. When leaving the vehicle, always take the key
with you and lock the vehicle. Anyone can
start the engine if a valid key has been left
inside the vehicle.
i The immobiliser is always deactivated
when you start the engine. ATA (Anti-Theft Alarm system)
X
To prime: lock the vehicle with the key or
KEYLESS-GO.
Indicator lamp :flashes. The alarm sys-
tem is primed after approximately
10 seconds.
X To deactivate: unlock the vehicle with the
key or KEYLESS-GO.
or X Insert the key into the ignition lock.
A visual and audible alarm is triggered if the
alarm system is primed and you open: R a door
R the vehicle with the emergency key ele-
ment
R the boot lid
R the bonnet
X To switch the alarm off with the key:
press the %or& button on the key.
The alarm is switched off.
or
X Remove the Start/Stop button from the
ignition lock.
X Insert the key into the ignition lock.
The alarm is switched off. 80
Protection against theftSafety

!
Vehicles with a rain sensor: if the wind-
screen becomes dirty in dry weather con-
ditions, the windscreen wipers may be acti- vated inadvertently. This could damage the
windscreen wiper blades or scratch the
windscreen.
For this reason, you should always switch
off the windscreen wipers in dry weather. 1
$ Windscreen wipers off
2 Ä Intermittent wipe, low (rain sensor
set to low sensitivity)
3 Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe/î to wipe the wind-
screen using washer fluid
X Switch on the power supply with the Start/
Stop button or the key (Y page 161).
X Turn the combination switch to the corre-
sponding position.
In the ÄorÅ position, the appropriate
wiping frequency is set automatically accord- ing to the intensity of the rain. In the Å
position, the rain sensor is more sensitive
than in the Äposition, causing the wind-
screen wipers to wipe more frequently.
The washer fluid is fed through the wiper
blades; when the screen is wiped with washer
fluid î, the water is emitted directly from
the blades.
If you push the combination switch beyond
the point of resistance in the direction of
arrow Band hold it in this position, the man- ual wash programme is activated. If you
briefly push the combination switch beyond
the point of resistance in the direction of
arrow B, the automatic wash programme is
activated.
If the wiper blades are worn, the windscreen
will no longer be wiped properly. This could
prevent you from observing the traffic condi-
tions. Replacing the wiper blades
Important safety notes G
WARNING
If the windscreen wipers begin to move while
you are changing the wiper blades, you can be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windscreen wipers and
ignition before changing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
! Never open the bonnet if a windscreen
wiper arm has been folded away from the
windscreen.
Hold the windscreen wiper arm firmly when you change the wiper blade. If you release
the windscreen wiper arm without a wiper
blade and it falls onto the windscreen, the
windscreen may be damaged by the force
of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified
specialist workshop.
! Always position the windscreen wiper
arms vertically before folding them away
from the windscreen. By doing so, you will
avoid damage to the bonnet. 134
Windscreen wipersLights and windscreen wipers

The red band in the rev counter indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. 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 measured air tempera-
ture and not the road surface temperature.
The outside temperature display is in the mul- tifunction display (Y page 246).
There is a short delay before a change in out- side temperature is shown in the multifunc-
tion display. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The multifunction display shows the coolant
temperature gauge in the lower section of the rev counter (Y page 32).
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 124 †. Operating the on-board computer
:
Multifunction display
; Right control panel
= Left control panel
X To activate the on-board computer: turn
the key 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 ò R
Opens the menu list 9
: Press briefly:
R Scrolls through lists
R Selects a menu or function
R In the Radio Radio orMedia
Media menu:
opens the track or station list
and selects a station, an audio
track or a video scene
R In the Telephone
Telephone menu:
switches to the phone book and
selects a name or a telephone
number Displays and operation
245On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 181).
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 frozen slush.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 125 †. The engine may
otherwise be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, consult a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant level, the coolant temperature may rise to 124 †. #
See Owner's Manual See Owner's Manual The battery is not being charged.
A warning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
! Do not continue driving. The engine could otherwise overheat.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 181).
X Consult a qualified specialist workshop. 284
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Auxiliary battery
Auxiliary battery
malfunction malfunction The auxiliary battery for the transmission is no longer being
charged.
X Consult a qualified specialist workshop at the next opportunity.
X Until then, set the selector lever to position Pbefore you switch
off the engine.
X Before leaving the vehicle, apply the electric parking brake. N N The boot lid is open.
X Close the boot lid. M
M The bonnet is open. A warning tone also sounds.
G WARNING
The open bonnet may then block your view when the vehicle is in
motion.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Safeguard the vehicle against rolling away (Y page 181).
X Close the bonnet. Active bonnet mal‐ Active bonnet mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The active bonnet (pedestrian protection) is not active due to a
malfunction or because it has already been triggered.
X Consult a qualified specialist workshop. C C At least one door is open. A warning tone also sounds.
X Close all doors. _
Front left seat Front left seat
backrest not backrest not
locked locked
orFront
Front
right seat back‐
right seat back‐
rest not locked
rest not locked The driver's or front-passenger seat backrest is not engaged. A
warning tone also sounds.
X Push the backrest back until it engages. &
inoperative Bat‐ inoperative Bat‐
tery low tery low the on-board voltage is too low The auxiliary heating (Y
page 149)
has switched itself off. The auxiliary heating cannot be switched
on.
X Drive for a considerable distance.
The battery charges. The auxiliary heating is operational again as
soon as the on-board electrical system voltage is sufficient. Display
messages
299On-board computer and displays Z

Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ?
N
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 Stop the vehicle immediately, paying attention to road and traffic condi-
tions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 181).
X Leave the vehicle and keep a safe distance from the vehicle until the engine
has cooled down.
X Check the coolant level and top up the coolant, observing the warning notes
(Y page 342).
X If you have to top up the coolant frequently, have the engine cooling system
checked.
X Make sure that the air supply to the engine radiator is not blocked, e.g. by
frozen slush.
X Do not start the engine again until the coolant temperature is below 125 †.
The engine may otherwise be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g. driving in
mountainous terrain and stop-start traffic. ?
N
The red coolant warning lamp comes on while the engine is running. A
warning tone also sounds.
The coolant temperature has exceeded 124 †. The airflow to the engine radi- ator may be blocked or the coolant level may be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Never drive with an overheated engine. Driving when your engine is overhea-
ted can cause some fluids which may have leaked into the engine compart-
ment to catch fire.
In addition, steam from an overheated engine can cause serious burns, which
can occur just by opening the bonnet.
There is a risk of injury.
X Observe the additional display messages in the multifunction display.
X Stop the vehicle immediately, paying attention to road and traffic condi-
tions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 181).Warning and indicator lamps in the instrument cluster
311On-board computer and displays Z

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 26). Engine compartment
Bonnet
Important safety notes G
WARNING
An unlocked bonnet may open up when the
vehicle is in motion and block your view. There is a risk of an accident.
Never unlock the bonnet when driving. Before
every trip, ensure that the bonnet is locked. G
WARNING
When being opened and closed, the bonnet
may suddenly fall into the closed position.
There is a risk of injury to persons in the range of movement of the bonnet.
Open and close the bonnet only when nobody
is in the range of movement. G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade. G
WARNING
There are moving components in the engine
compartment. Certain components may con-
tinue to move or suddenly move again even
after the ignition has been switched off, e.g.
the radiator fan. There is a risk of injury.
If you have to carry out work in the engine
compartment:
R switch off the ignition
R never touch the dangerous areas surround-
ing moving components, e.g. the rotation
area of the fan
R remove jewellery and watches
R keep items of clothing and hair, for exam-
ple, away from moving parts. G
WARNING
The ignition system and the fuel injection sys- tem operate with a high voltage. If you touch
the live components, you could receive an
electric shock. There is a danger of injury.
Never touch components of the ignition sys-
tem or the fuel injection system when the
ignition is switched on.
Active bonnet (pedestrian protection) Operating principle
! A triggered active bonnet must be
repaired at a qualified specialist workshop
after it has been reset. The active bonnet
function will then be available again. The
additional pedestrian protection provided
by the active bonnet will then be restored.
The active bonnet is only available in certain
countries.
The active bonnet can reduce the risk of injury to pedestrians in certain accident situations.
Raising the active bonnet increases the clear- ance to hard components, such as the engine.
If the active bonnet has been triggered, it is
raised at the rear in the area around the hinge
by approximately 85 mm.
For the drive to the workshop, reset the trig-
gered active bonnet yourself. If the active 338
Engine compartmentMaintenance and care