key battery MERCEDES-BENZ CLS COUPE 2014 Owners Manual

Auxiliary ventilation
Activating/deactivating ................ .150
Activating/deactivating (on the
centre console ).............................. 151
Problem (display message) ............ 154
Remote control .............................. 151
Axle load, permissible (trailer tow-
ing) ...................................................... 410 B
Ball coupling Folding in ....................................... 236
Folding out ..................................... 234
BAS (Brake Assist System) ................. 70
BAS PLUS (Brake Assist System
PLUS) .................................................... 71
Battery (key)
Checking .......................................... 85
Important safety notes .................... 85
Replacing ......................................... 86
Battery (vehicle)
Charging ........................................ 353
Display message ............................ 271
Important safety notes .................. 351
Jump starting ................................. 355
Belt
see Seat belts
Belt tensioner
Activation ......................................... 51
Blind Spot Assist
Activating/deactivating ................. 250
Display message ............................ 276
Notes/function .............................. 223
Trailer towing ................................. 225
see Active Blind Spot Assist
BlueTEC (AdBlue®) ............................ 403
Bluetooth® SAP V3 telephone
module
see Separate operating instructions
Bonnet
Closing ........................................... 329
Display message ............................ 283
Important safety notes .................. 328
Opening ......................................... 328
Boot
Emergency release .......................... 95
Important safety notes .................... 91 Opening/closing (automatically
from inside) ...................................... 94
Opening/closing (automatically
from outside) ................................... 92
Opening/closing (manually from
outside) ............................................ 92
Boot lid
Display message ............................ 283
Opening dimensions ...................... 407
Boot load (maximum) ........................ 407
Bottle holders .................................... 314
Box (boot) ........................................... 308
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 264
Notes ............................................. 405
Brake lamps
Adaptive ........................................... 72
Display message ............................ 268
Brakes
ABS .................................................. 70
BAS .................................................. 70
BAS PLUS ........................................ 71
Brake fluid (notes) ......................... 405
Display message ............................ 262
Driving tips .................................... 183
High-performance brake system .... 184
HOLD function ............................... 200
Important safety notes .................. 183
Parking brake ................................ 181
Warning lamp ................................. 288
Breakdown
see Flat tyre
see Towing away
Bulbs
see Replacing bulbs C
Calling up a fault see Display messages
Car
see Vehicle
Car key
see Key
Car wash (care) ................................. 3346
Index

Insect protection on the radiator
.... 329
Instrument cluster
Overview .......................................... 32
Settings ........................................ .252
Warning and indicator lamps ........... 34
Instrument cluster lighting .............. 252
Intelligent Light System
Activating/deactivating ................. 253
Display message ............................ 269
Overview ........................................ 127
Setting the dipped-beam head-
lamps for driving on the right/left .. 253
Interior lighting
Automatic control system .............. 130
Delayed switch-off (on-board
computer) ...................................... 254
Emergency lighting ........................ 131
Manual control ............................... 131
Overview ........................................ 130
Reading lamp ................................. 130
Setting brightness for display/
switches (on-board computer) ....... 252
Setting the ambient lighting
brightness (on-board computer) .... 253
Setting the ambient lighting col-
our (on-board computer) ................ 254
Interior motion sensor
Deactivating ..................................... 80
Function .......................................... .79
Priming ............................................ 79
Switching off .................................... 80
ISOFIX child seat securing system ....57J
Jack Storage location ............................3 45
Using ............................................. 375
Jump starting (engine) ......................355 K
Key Changing the battery ....................... 86
Checking the battery ....................... 85
Convenience closing feature ............ 98
Convenience opening feature .......... 97
Display message ............................ 285 Door central locking/unlocking ....... 83
Emergency key element ................... 84
Important safety notes .................... 82
Loss ................................................. 87
Modifying the programming ............. 84
Overview .......................................... 82
Positions (ignition lock) ................. 159
Problem (malfunction) ..................... 87
Starting the engine ........................ 161
Key positions
Key ................................................ 159
KEYLESS GO .................................. 159
KEYLESS-GO
Convenience closing ........................ 98
Display message ............................ 285
Locking ............................................ 83
Removing the Start/Stop button ... 160
Start/Stop button .......................... 159
Starting the engine ........................ 162
Unlocking ......................................... 83
Kickdown
Driving tips ................................... .171
Manual drive program .................... 176
Kneebag ............................................... 49 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 251
Display message ............................ 275
Function/informatio n.................... 225
Lane package ..................................... 223
Lap time (RACETIMER) ...................... 259
Lashing eyelets ................................. 306
Licence plate lamp (display mes-
sage) ................................................... 268
Light sensor (display message) ....... 269
Lighting
see Lights
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 253
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 254
Active light function ....................... 127
Adaptive Highbeam Assist ............. 128 Index
13

X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
For further information on the convenience
closing feature (Y page 97).
X To unlock the boot lid/tailgate: pull the
handle on the boot lid/tailgate.
The vehicle only unlocks the boot lid/tail-
gate. 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: simultaneously
press the %and& buttons on the
key for approximately six seconds until the
battery check lamp flashes twice
(Y page 85).
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 door handle on the front-
passenger door or the rear door.
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-
onds until the battery check lamp flashes
twice (Y page 85). Emergency key element
General notes If the vehicle can no longer be locked or
unlocked with the key, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door or the boot
lid/tailgate, the anti-theft alarm system will
be triggered (Y page 78).
There are several ways to deactivate the
alarm:
X To deactivate the alarm with the key:
press the %or& button on the key.
or
X Insert the key into the ignition lock.
or
X To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The key must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The key must be outside the vehicle. 84
KeyOpening and closing

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 90)
R unlocking the boot (Y page 95)
R unlocking the tailgate (Y page 95)
R locking the vehicle (Y page 90)
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.
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 86). Key
85Opening and closing Z

i
If the battery of the key is checked within
the signal reception range of the vehicle,
pressing 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 85). 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. 86
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 85) and replace it if necessary
(Y page 86).
If this does not work: X Lock (Y page 90) or unlock (Y page 90) the vehicle using the
emergency key element. The key is faulty.
X Lock (Y page 90) or unlock (Y page 90) 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. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 85) and replace it if necessary
(Y page 86).
If this does not work: X Lock (Y page 90) or unlock (Y page 90) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Lock (Y page 90) or unlock (Y page 90) 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 90) or unlock (Y page 90) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. 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. Key
87Opening 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 353).
or
X Jump-start the vehicle (Y page 355).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. 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 79).
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 (Y
page 78).
All countries: G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral
R start 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 and animals unattended in the vehi-
cle. Keep the keys out of the reach of children. 88
DoorsOpening and closing

Adjusting the lumbar support
You can adjust the contour of the driver's seat
so as to provide optimum support for your
back.
X Move adjustment lever :in the direction
of the arrow until the desired backrest con- tour is achieved. Adjusting the 4-way lumbar support
:
To raise the backrest contour
; To soften the backrest contour
= To lower the backrest contour
? To harden the backrest contour
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back. Switching the seat heating on/off
Switching on/off G
WARNING
If you repeatedly switch on seat heating, the
seat cushion and backrest padding may
become very hot. The health of vehicle occu-
pants with limited temperature sensitivity or a limited ability to react to excessively high
temperatures may be affected or they may
even suffer burn-like injuries. There is a risk of
injury.
Therefore, do not switch on the seat heating
repeatedly. Driver's and front-passenger seat
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches from level 3 to level 2after approximately eight
minutes.
The system automatically switches from level
2 to level 1after approximately ten minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
X Turn the key to position 1or 2in the ignition
lock (Y page 159).
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off. Seats
111Seats, steering wheel and mirrors Z

Problems with the seat heating
Problem
Possible causes/consequences and
M
MSolutions The seat heating has
switched off prema-
turely or cannot be
switched on. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically. Switching the seat ventilation on/off
Switching on/off Driver's and front-passenger seat
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
X Turn the key to position 1or 2in the ignition
lock (Y page 159).
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 97). The seat ven-
tilation of the driver's seat automatically
switches to the highest level. 112
SeatsSeats, steering wheel and mirrors

Problems with the seat ventilation
Problem
Possible causes/consequences and
M
MSolutions The seat ventilation has
switched off prema-
turely or cannot be
switched on. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat ventilation will
switch back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle. Adjusting the steering wheel man-
ually
:
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position
(fore-and-aft adjustment)
X Push release lever :down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired
position.
X Push release lever :up completely.
The steering column is locked.
X Check if the steering column is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction. Steering wheel
113Seats, steering wheel and mirrors Z