2014 MERCEDES-BENZ S-CLASS COUPE key battery

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

K
Key Changing the battery ...................... .88
Checking the battery ...................... .88
Convenience closing feature .......... 101
Convenience opening feature ........ 100
Display message ............................ 298
Door central locking/unlocking ...... .85
Emergency key element ................... 87
Important safety note s.................... 84
KEYLESS-GO start function .............. 86
Loss ................................................. 89
Modifying the programming ............. 86
Overview .......................................... 84
Positions (ignition lock) ................. 159
Problem (malfunction) ..................... 89
Starting the engine ........................ 161
Key positions
Key ................................................ 159
Start/Stop button .......................... 159
KEYLESS-GO
Convenience closing ...................... 101
Deactivation ..................................... 85
Locking ............................................ 85
Unlocking ......................................... 85
Kickdown
Driving tip s.................................... 171
Kneebag ............................................... 50 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
Licence plate lamp (display mes-
sage) ................................................... 280
Light sensor (display message) ....... 281
Lighting
see Lights
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 260
Active light function ....................... 127
Adaptive Highbeam Assist PLUS .... 128
Automatic headlamp mode ............ 125
Cornering light function ................. 127 Dipped-beam headlamp
s............... 125
Driving abroad ............................... 124
Foglamps (extended range) ........... 128
Hazard warning lamps ................... 126
Headlamp flashe r........................... 126
Intelligent Light System (func-
tion) ............................................... 127
Light switch ................................... 124
Main-beam headlamp s................... 126
Misted up headlamp s.................... 130
Motorway mode ............................. 127
Parking lamps ................................ 126
Rear foglamp ................................. 125
Setting exterior lighting ................. 124
Side lamps ..................................... 125
Switching the spotlight on/of f....... 261
Turn signals ................................... 126
see Interior lighting
see Replacing bulbs
LIM indicator lamp
Cruise control ................................ 186
DISTRONIC PLUS ........................... 193
Variable SPEEDTRONIC ................. 189
Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................ 314
Locking
see Central locking
Locking (doors)
Automatic ........................................ 92
Emergency locking ........................... 93
From inside (central locking but-
ton) .................................................. 91
Locking centrally
see Central locking
Luggage net hooks ............................ 319
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 111 M
M+S tyres ........................................... 378
MAGIC BODY CONTROL .................... 204
MAGIC SKY CONTROL ....................... 104
Main-beam headlamps
Adaptive Highbeam Assist PLUS .... 128
Display message ............................ 280 Index
13

R
when the external door handles are
touched
R during convenience closing X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :or;.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
For further information on the convenience closing feature (Y page 101).
Deactivating If you do not intend to use the vehicle for a
longer period of time, you can deactivate KEY- LESS-GO. The key will then use very little
power, thereby conserving battery power. For
the purposes of activation/deactivation, the
vehicle must not be nearby.
X To deactivate: press the&button on
the key twice in rapid succession.
The battery check lamp of the key lights up
twice briefly and KEYLESS-GO is deactiva-
ted.
X To activate: press any button on the key or
insert the key into the ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again. KEYLESS-GO start function
Bear in mind that the engine can be started by any of the vehicle occupants if there is a key
in the vehicle. Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for about six seconds until the bat- tery indicator lamp flashes twice
(Y page 88).
i If the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the &or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the front-passenger door handle.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six sec- 86
KeyOpening and closing

onds until the battery check lamp flashes
twice (Y
page 88). Emergency key element
General notes If the vehicle can no longer be locked or
unlocked with the key or KEYLESS-GO, use
the emergency key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered. Switch
off the alarm (Y page 80).
If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element X
Push release catch :in the direction of
the arrow and at the same time, remove
emergency key element ;from the key.
For further information about: R unlocking the driver's door (Y page 93)
R unlocking the boot (Y page 98)
R locking the vehicle (Y page 93)
Inserting the emergency key element X
Push emergency key element ;com-
pletely into the key until it engages and release catch
:is back in its basic posi-
tion. Battery of the key
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist workshop. Key
87Opening and closing Z

Checking the battery
X
Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
X Replace the battery (Y page 88).
i If the key battery is checked within the
signal reception range of the vehicle, press- ing the &or% button:
R locks or
R unlocks the vehicle
i You can obtain a battery from any quali-
fied specialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X Take the emergency key element out of the
key (Y page 87). X
Press emergency key element ;into the
opening in the key in the direction of the
arrow until battery compartment cover :opens. When doing so, do not hold battery
compartment cover
:shut.
X Remove battery compartment cover :. X
Repeatedly tap the key against your palm
until battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contamina-
tion.
X Insert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
X Insert emergency key element ;into the
key.
X Check the function of all key buttons on the
vehicle. 88
KeyOpening and closing

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You can no longer lock
or unlock the vehicle
using the key. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 88) and replace it if necessary
(Y page 88).
If this does not work: X Unlock (Y page 93) or lock (Y page 93) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 93) or lock (Y page 93) the vehicle using the
emergency key element. The key is faulty.
X Unlock (Y page 93) or lock (Y page 93) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. KEYLESS-GO was deactivated.
X Reactivate KEYLESS-GO (Y page 85). The key battery is discharged or nearly discharged.
X Check the key battery (Y page 88) and replace it if necessary
(Y page 88).
If this does not work: X Unlock (Y page 93) or lock (Y page 93) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 93) or lock (Y page 93) the vehicle using the
emergency key element. There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. Key
89Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 362).
or
X Jump-start the vehicle (Y page 364).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The key is
in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 88) and replace it if necessary
(Y page 88).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Doors
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury. Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld- erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked from the out-
side, the double-lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. You can deac-
tivate the double lock function by deactivat-
ing the interior motion sensor (Y page 81).90
DoorsOpening and closing

The doors can then be opened from the inside
after the vehicle has been locked from the
outside. The anti-theft alarm system is trig-
gered if the door is opened from the inside.
Switch off the alarm .
All countries: G
WARNING
If children are left unsupervised in the vehicle, they can:
R open doors and endanger other persons or
road users
R climb out and be injured by the traffic
R operate vehicle equipment and, for exam-
ple, trap themselves.
Children could also set the vehicle in motion, for example by:
R releasing the parking brake
R shifting the automatic transmission out of
park position P
R starting the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. Always
keep the key out of reach of children.
Stow luggage or loads preferably in the boot. Observe the loading guidelines (Y page 314).Unlocking and opening the doors
from the inside
i When a door is opened, the side window
on that side opens slightly. When the door
is closed, the side window is raised again.
! The side windows will not open/close if
the battery is discharged or if the side win-
dows have iced up. It will then not be pos-
sible to close the door. Do not attempt to
force the door to close. You could other-
wise damage the door or the side window.
Only for the United Kingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock function is activa- ted as standard. It is then not possible to open
the doors from inside the vehicle. You can
deactivate the double lock function by deac-
tivating the interior motion sensor . The doors can then be opened from the inside after thevehicle has been locked from the outside. The
anti-theft alarm system is triggered if the door
is opened from the inside. Switch off the
alarm (Y page 80).
For all countries except the United King-
dom:
You can open a door from inside the vehicle
even if it has been locked. If the vehicle has
previously been locked with the key or with
KEYLESS-GO, opening a door from the inside will trigger the anti-theft alarm system.
Switch off the alarm (Y page 80). X
Pull door handle ;.
If the door is locked, locking knob :pops
up. The door is unlocked and opens. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock and unlock the vehicle from the inside. The buttons are located on
both doors. Doors
91Opening and closing Z