open bonnet MERCEDES-BENZ S-CLASS COUPE 2014 Owners Manual

B
BAS (Brake Assist System) ................. 70
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/note s................................ 71
BAS PLUS Q (Brake Assist System
PLUS) with Cross-Traffic Assist
Important safety notes .................... 71
Battery (key)
Checking .......................................... 88
Important safety notes .................... 87
Replacing ......................................... 88
Battery (vehicle)
Charging ........................................ 362
Display message ............................ 283
Important safety notes .................. 360
Jump starting ................................. 364
Belt
see Seat belts
Belt tensioner
Activation ......................................... 57
Blind Spot Assist
see Active Blind Spot Assist
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 336
Closing ........................................... 338
Display message ............................ 297
Important safety notes .................. 336
Opening ......................................... 337
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 ............................ 296
Obstacle recognition ........................ 94
Opening dimensions ...................... 408
Opening/closing .............................. 94
Boot load (maximum) ........................ 408Brake
EBD .................................................. 77
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 272
Notes ............................................. 406
Brake force distribution, elec-
tronic
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 75
Display message ............................ 280
Brakes
ABS .................................................. 70
Adaptive Brake Assist ...................... 74
BAS .................................................. 70
BAS PLUS with Cross-Traffic
Assist ............................................... 71
Brake fluid (notes) ......................... 406
Display message ............................ 266
Driving tips .................................... 182
High-performance brake system .... 184
Hill start assist ............................... 162
HOLD function ............................... 202
Important safety notes .................. 182
Parking brake ................................ 180
Warning lamp ................................. 301
Breakdown
see Flat tyre
see Towing away
Brightness control (instrument
cluster lighting) ................................... 34
Buttons on the steering column ...... 243 C
Calling up a fault see Display messages
Camera
see 360° camera
Capacities (technical data) ............... 402
Car
see Vehicle
Car key
see Key
Car wash (care) ................................. 3436
Index

Cockpit
Function Page
:
Steering wheel gearshift
paddles
172
;
Combination switch 126
=
Horn
?
Instrument cluster 32
A
DIRECT SELECT lever 167
B
Overhead control panel 38
C
Control panel for:
Ü
Lowering the rear
seat head restraints 110
u
Extending/retracting
the rear roller sunblind 322
Moving the seat-belt
extender forwards 46
PASSENGER AIRBAG indi-
cator lamp
43
Adjusts the brightness of
the instrument lighting and
the COMAND display
D
Climate control systems 136
E
Ignition lock 159
Start/Stop button 159 Function Page
F
Adjusts the steering wheel 114
Steering wheel heating 115
G
Cruise control lever 186
H
Electric parking brake 180
I
Diagnostics connection 24
J
Opens the bonnet 337
K
Light switch 124
L
Control panel for:
Activating Steering Assist
and Stop&Go Pilot
200
Activating Active Lane
Keeping Assist 236
Deactivating PARKTRONIC 209
Switching on 360° camera 221
Activating Night View
Assist 230
Switching on the head-up
display
25930
CockpitAt a glance

Function Page
:
Overhead control panel 38
;
Combination switch 126
=
Horn
?
Instrument cluster 32
A
DIRECT SELECT lever 167
B
Steering wheel gearshift
paddles
172
C
Opens the bonnet 337
D
Diagnostics connection 24
E
Control panel for:
Activating Steering Assist
and Stop&Go Pilot 200
Control panel for:
Activating Steering Assist
and Stop&Go Pilot
200
Activating Active Lane
Keeping Assist
236
Deactivating PARKTRONIC 209
Switching on 360° camera 221
Activating Night View
Assist
230
Switching on the head-up
display
259 Function Page
F
Light switch 124
G
Electric parking brake 180
H
Ignition lock 159
Start/Stop button 159
I
Adjusts the steering wheel 114
Steering wheel heating 115
J
Cruise control lever 186
K
Climate control systems 136
L
Control panel for:
Ü
Lowering the rear
seat head restraints 110
u
Extending/retracting
the rear roller sunblind 322
Moving the seat-belt
extender forwards
46
PASSENGER AIRBAG indi-
cator lamp
43
Adjusts the brightness of
the instrument lighting and
the COMAND display Cockpit
31At a glance

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
15 seconds.
X To switch off: 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 turn 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 159).
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. 132
Windscreen wipersLights and windscreen wipers

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 25). Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle 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 recognise function
restrictions 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.
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. Otherwise, a vehicle that is not oper-
ating safely may cause an accident.
If the operating safety of the vehicle is not
guaranteed, stop the vehicle at once, paying
attention to road traffic conditions. Contact a
qualified specialist workshop.
For an overview, see the instrument panel
illustration (Y page 32). Displays and operation
Rev counter
! Do not drive in the overrevving range.
Doing so will damage the engine.
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. 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 coolant temperature is shown in 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 †. 242
Displays and operationOn-board computer and displays

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top Top
up
upcoolant
coolant See
See
Owner’s Manual
Owner’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 Top up the coolant, observing the warning notes before doing so
(Y page 340).
X If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop. ? ? The fan motor is faulty.
X At coolant temperatures below 125 †, 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. ?
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 Secure the vehicle to prevent it from rolling away (Y page 178).
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, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant level, the coolant temperature may rise to 124 †. 282
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions 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 Secure the vehicle against rolling away (Y page 178).
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 Visit 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 148)
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. &
inoperative inoperative
Refuel
Refuel
vehicle
vehicle There is too little fuel in the fuel tank. The auxiliary heating cannot
be switched on (Y page 148).
X Refuel at the nearest filling station. &
inoperative See inoperative See
Owner's Man. Owner's Man. The auxiliary heating is temporarily malfunctioning or faulty.
X When the vehicle is on a level surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heat- ing, waiting several minutes between each attempt
(Y page 148).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop. Display
messages
297On-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 Secure the vehicle against rolling away (Y page 178).
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 340).
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 Secure the vehicle against rolling away (Y page 178).308
Warning and indicator lamps in the instrument clusterOn-board computer and displays

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 25). Engine compartment
Bonnet
Important safety notes G
WARNING
An unlocked bonnet may open while driving
and block your view. There is a risk of an acci- dent.
Never unlock the bonnet while driving. 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 336
Engine compartmentMaintenance and care