2015 MERCEDES-BENZ C-CLASS COUPE ignition

Pets in the vehicle
G
WARNING
If you leave animals unsupervised or unse-
cured in the vehicle, they may push abutton
or as witch, for example.
They could:
R activate vehicle equipment and become
trapped, for example
R switch vehicle systems on or off, thus
endangering other road users
In the event of an accident, sudden braking or
abrupt changes of direction, unsecured ani-
mals could be flung around the vehicle, injur-
ing the vehicle occupants. There is arisk of an
accident and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals correctly during a
journey, e.g. in an animal transport box. Driving safety systems
Driving safety systems overview
In this section,y ou will find information about
the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 66)
R BAS ( Brake Assist System) (Y page 67)
R BAS PLUS with Cross-Traffic Assist ( Brake
Assist System PLUS with Cross-Traffic Assist)
(Y page 67)
R COLLISION PREVENTION ASSIST PLUS
(Y page 69)
R Adaptive brake lights (Y page 71)
R ESP ®
(Electronic StabilityProgram)
(Y page 71)
R EBD ( electronic brakeforce distribution)
(Y page 75)
R ADAPTIVE BRAKE (Y page 75)
R PRE-SAFE ®
Brake (Y page 75)
R STEERC ONTROL (Y page 77) Important safety notes
If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front,f or vehicle speed, for braking in
good time, and for staying in lane. Always adapt your driving style to suit the prevailing road and
weather condition sand maintain asafe distance
from the vehicle in front.D rive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tyres and the road
surface. Pay particular attention to the informa- tion regarding tyres, recommended minimum
tyre tread depths etc. in the "Wheels and tyres" section (Y page 353).
In wintry driving conditions, always use winter
tyres (M+S tyres) and, if necessary, snow
chains. Only in this way will the driving safety
systems described in this section work as effec-
tively as possible. ABS (Anti-loc
kBraking System)
General notes ABS regulates brake pressure in such
away that
the wheels do not lock when you brake. This
allowsy ou to continue steering the vehicle when
braking.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from aspeed of about 8km/h,
regardless of road-surface conditions. ABS
works on slippery surfaces, even when you only brake gently.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 66). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristic smay be severely impaired. Addition-
ally,f urther driving safety systems are deac- 66
Driving safety systemsSafety

X
To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO start-func-
tio norK EYLESS -GO:switch the ignition off
and open the driver's door.
X To deactivate: switch on the ignition.
Whe nleaving the vehicle, always take the key
with yo uand lock the vehicle. Anyone can start
the engine if avalid key ha sbeenleftinsid ethe
vehicle.
i The immobiliser is always deactivate
dwhen
yo us tart the engine. ATA (Anti-Theft Alarm system)
X
To prime: lock the vehicl ewitht he key or
KEYLESS-GO.
Indicato rlamp :flashes. The alarm system
is primed afte rapproximatel yten seconds.
X To switc hoff:unlock the vehicl ewitht he key
or KEYLESS-GO.
or X Insert the key into the ignition lock.
Av isua land audibl ealarm is triggered if the
alarm system is primed and yo uopen:
R ad oor
R the vehicl ewitht he emergency key element
R the boot lid
R the bonnet
X To deactivate the alarm with the key: press
the % or& button on the key.
The alarm stops.
or X
Vehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (Y page 145).
X Insert the key into the ignition lock.
The alarm stops.
X To sto
pthe alarm using KEYLESS-GO:
grasp the outsid edoorh andle. The key must
be outsid ethe vehicle.
The alarm stops.
or X Press the Start/Stop button on the dash-
board .The key must be insid ethe vehicle.
The alarm stops.
The alarm does not switch off, eve nifyouclose
the open door tha thas triggered it, for example.
i If the alarm stays on for more than
30 seconds ,the Mercedes‑Be nz emergency
cal lsys tem automaticall ysend sam essage to
the Customer Assistance Centre. Thi sisdone
by means of atext message or adatac on-
nection.
The emergency cal lsystem send samessage
or establishes adatac onnectio nprovided
that:
R youh aves ubscribed to the Mercedes ‑Benz
emergency cal lsystem
R the Mercedes‑Be nz emergency cal lsys tem
ha sb eena ctivate dproperly
R the necessary mobil ephone network is
available Tow-away protection
Function An audibl
eand visua lalarm is triggered if your
vehicle's angle of inclinatio nisa ltere dw hile
tow-away protection is primed .Thisc an occu rif
the vehicl eisjacke dupono ne side,for exam-
ple.
Priming X
Make sure that:
R the doors are closed
R the boot li disclosed
Onl ythen is tow-away protection activated.
X Lock the vehicl ewitht he key or KEYLESS-GO.
Tow-away protection is activate dafter
approximatel y60s econds. 78
Protectio
nagains ttheftSafety

Deactivating
X
Unloc kthe vehicle wit hthe keyorK EYLESS-
GO.
or X Inser tthe keyintot he ignition lock.
Tow-away protection is switched of fautomat-
ically.
Deactivating To preven
tafalsea larm, deactivat etow-a way
protection if you loc kyour vehicle and it:
R is bein gtransported
R is bein gloaded onto aferry or car transporter,
fo re xample
R is parke donam ovable surface, e.g. in asplit-
level garage
You can deactivat etow-a way protection via the
multimedia syste m(seet he Digital Owner's
Manual).
Tow-away protection remain sdeactivated until:
R thev ehicle is unlocke dagain and
R ad ooriso penedand close dagain and
R thev ehicle is locke dagain Interior motion sensor
Function Whe
nthe interio rmotion sensor is primed ,a
visual and audible alar mistriggere difm ove-
men tisd etecte dinthevehicle interior. Thi scan
occur if someon ereaches into th evehicle inte-
rior, fo rexample.
Priming X
Mak esuret hat:
R thes idew indows are closed
R thes lidin gsunroof or th epanorama sliding
sunroof is closed
R there are no objects ,e.g.m ascots ,hanging
on th erear-vie wmirrororont hegrab han-
dles on th erooftrim
Thi sw ill preven tfalse alarms.
X Mak esuret hat: R
thed oors are closed
R thes lidin gsunroof or th epanorama sliding
sunroof is closed
R theb ootlid is closed
Only then is th einterior motion sensor acti-
vated.
X Loc kthe vehicle wit hthe keyorK EYLESS-GO.
The interio rmotion sensor is primed after
approximately te nseconds.
Deactivating X
Unloc kthe vehicle wit hthe keyorK EYLESS-
GO.
or X Inser tthe keyintot he ignition lock.
or X Press th eStart/Sto pbutton.
The ke ymustbeint hevehicle.
The interio rmotion sensor is automatically
switched off.
Deactivating To preven
tafalsea larm, deactivat ethe interior
motion sensor if you loc kyour vehicle and:
R people or animals remain in th evehicle
R thes lidin gsunroof or panorama slidin gsun-
roof remain sopen
R thes idew indows remain open
You can deactivat ethe interio rmotion sensor
via th emultimedia syste m(seet he Digital Own-
er' sM anual).
The interio rmotion sensor remain sdeactivated
until:
R thev ehicle is unlocke dagain and
R ad ooriso penedand close dagain and
R thev ehicle is locke dagain Protection against theft
79Safety Z

Key
Important safety notes
United Kingdom only: G
WARNING
Whe nthe doubl elocks are activated, the
door scan no longer be opened from the
inside. People in th evehicl ecan no longer get
out ,e.g.inh azardous situations. There is a
ris kofi njury.
Therefore ,donotleav eany people unsuper-
vised in th evehicle, particularly children ,eld-
erl yp eople or people in need of special assis-
tance .Don otactivat ethe doubl eloc kw hen
people are in th evehicle.
If th evehicl ehas been locke dfromt heoutside,
th ed oubl eloc kf unction is activated as stand-
ard. It is then no tpossibl etoopen th edoors
from inside th evehicle. You can deactivat ethe
doubl eloc kfunction by deactivating th einterior
motion sensor (see th eseparat emultimedia
system operating instructions). The door scan
then be opened from th einside after th evehicle
has been locke dfromt heoutside .The anti-theft
alarm system is triggered if th edoor is opened
from th einside. Switc hoff th ealarm
(Y page 78).
All countries: G
WARNING
If children are lef tunsupervised in th evehicle,
they could:
R open doors, thereby endangering other per-
son sorr oad users
R get out and be struc kbyoncomingt raffic
R operate vehicl eequipmen tand become
trapped ,for example
In addition ,the children could also set the
vehicl einm otion,for example, if they:
R release th eparking brake
R shift th eautomatic transmission out of park
position Porshift manual transmission into
neutral
R start th eengine
There is ariskofana ccidentand injury. Whe
nleaving th evehicle, always tak ethe key
wit hyou and loc kthe vehicle. Never leave
children and animals unattended in th evehi-
cle .Keept he keys out of th ereac hofc hildren. G
WARNING
If you attach heav yorlargeobjects to th ekey,
th ek eycould be unintentionally turne dinthe
ignition lock. This could caus ethe engin eto
be switched off .There is ariskofana ccident.
Do no tattach any heav yorlargeobjects to the
key. Remove any bulk ykeyrings before insert-
ing th ekeyintot he ignition lock.
! Kee
pthe keya way from stron gmagnetic
fields. Otherwise ,the remot econtro lfunction
could be affected.
Stron gmagnetic fields can occur in th evicin-
it yofp owerful electrical installations.
Do no tkeept he key:
R wit he lectronic devices, e.g. amobile phone
or another key
R wit hm etallic objects ,e.g.c oins or metal film
R inside metallic objects ,e.g.a metal case
This can affec tthe key's functionality.
Vehicles wit hKEYLESS-G Ostart function: do
no tk eept he keyo nthe parcel shelf or in the
boot .Otherwise ,the keym ay no tbed etected,
e.g. when starting th eengineu singthe Start/
Stop button.
Ac heck whichperiodically establishes aradio
connection between th evehicl eand th ekey
determine swhether avalid ke yisint hevehicle.
This occurs, for example:
R when starting th eengine
R whils tdriving
R when th eexternal door handles are touched
R during convenience closing 80
KeyOpening and closing

X
To unloc kthe vehicle: touch the inne rsur-
fac eoft he door handle.
X To lock the vehicle: touch sensor surface :
or ;.
Make sure tha tyou do not touch the inner
surface of the door handle.
X Convenience closin gfeature: touch
recesse dsensor surface ;for an extended
period.
For further informatio nonthe convenience
closing feature (Y page 94).
Deactivating and activating If yo
udon ot intend to us eakey for an extended
perio doftime,you can deactivate the KEYLESS-
GO functio nofthe key .The key will then us every
little power, thereb yconserving battery power.
For the purposes of activation or deactivation,
the vehicl edoesn ot have to be nearby.
X To deactivate: press the&button on the
key twice in rapid succession.
The battery check lamp (Y page 83)ofthe
key flashe stwice briefl yand lights up once,
then KEYLESS-GO is deactivated.
X To activate: press any button on the key.
or
X Insert the key into the ignition lock.
KEYLESS-GO and al lofits associate dfeatures
are available again. KEYLESS-GO start function
General notes Bea
rinm ind tha tthe engine can be started by
any of the vehicl eoccupants if ther eisakey in
the vehicl e(Ypage 148). Changin
gthe settings of the locking
system
Yo uc an change the settings of the locking sys-
tem. Thi smeans tha tonlyt he driver's door and
the fue lfille rflapa re unlocke dwhent he vehicle
is unlocked. Thi sisusefulify oufrequently travel
alone.
X To chang ethe setting: simultaneousl ypress
the % and& buttons for approximately si
xs econds unti lthe battery check lamp
(Y page 83) flashe stwice.
If the setting of the locking system is changed
withi nthe signa lrang eoft he vehicle, pressing
the & or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock: press the%button once.
X To unloc kcentrally: press the %button
twice.
X To lock: press the &button.
The KEYLESS-GO functions can be changed as
follows: X To unloc kthe driver' sdoor: touch the inner
surface of the door handl eonthe driver's
door.
X To unloc kcentrally: touch the inne rsurface
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
hol dthe % and& buttons simultane-
ousl yfor approximatel ysixseconds unti lthe
battery check lamp (Y page 83)flashes
twice. Emergenc
ykey element
General notes If the vehicl
ecan no longer be unlocke dwitht he
key or KEYLESS-GO ,use the emergency key ele-
ment.
If yo uusethe emergency key element to unlock
and open the driver' sdoor, the anti-thef talarm
system will be triggered .Switch off the alarm
(Y page 78).
If yo uunlock the vehicl eusing the emergency
key element, the fue lfille rflapw illn ot be
unlocke dautomatically.
X To unloc kthe fue lfille rflap: insert the key
into the ignition lock. 82
KeyOpening and closing

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 343).
or X Jump-start the vehicle (Y page 345).
or X Consult aqualified 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 83) and replace if necessary
(Y page 83).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from
apowerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost
akey. X
Have the key deactivated at aqualified 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 outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (see the separate multimedia
system operating instructions). The doors can
then be opened from the inside after the vehicle
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 78).
All countries: 86
DoorsOpening and closing

double lock function is activated as standard. It
is then not possible to open the doors from
inside the vehicle. You can deactivate the dou-
ble lock function by deactivating the interior
motion sensor (see the Digital Owner' sManual).
Opening/closing doors is then possible as fol-
lows: the doors can be opened from inside.
When alocked door is opened from inside the
vehicle, the previous unlocking proces swill be
acknowledged if the vehicle:
R has been locked with the locking butto nfor
the central locking or
R has been locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. Only the door which
has been opened from the inside is unlocked if
only the driver' sdoor had been previously
unlocked. Automatic locking feature
X
To deactivate: press and hold button :for
approximately five seconds until atone
sounds.
X To activate: press and hold button ;for
approximately five seconds until atone
sounds.
If you press one of the two buttons and do not
hear atone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
Therefore, you could be locked out if:
R the vehicle is being pushed
R the vehicle is being towed
R the vehicle is being tested on adynamometer i
You can activate and deactivate the auto-
matic locking mechanism via the multimedia
system (see the Digital Owner' sManual). Unlocking/locking the driver's door
using the emergency key element
i If you want to centrally lock the vehicle using
the emergency key element ,begin by press-
ing the locking butto nfor the interior locking
mechanism while the driver' sdoor is open.
Then lock the driver' sdoor using the emer-
genc ykey element. X
Inser tthe emergency key element int oopen-
ing :in the protective cap.
X Pull and hold the door handle.
X Pull the protective cap on the emergency key
as straight as possible away from the vehicle until it releases.
X Release the door handle. X
To unlock: turn the emergency key element
anti-clockwise as far as it will go to position
1.
X To lock: turn the emergency key element
clockwise as far as it will go to position 1.88
DoorsOpening and closing

becomes trapped, press the switch to open
the side window again. Opening and closing the side win-
dows
The switches for the side windows are located
on the driver' sdoor. There is also aswitch for
the front-passenger side window on the front-
passenger door.
The switches on the driver' sdoor take prece-
dence. :
Fron tleft
; Fron tright
X Turn the key to position 1or 2in the ignition
lock.
X To open manually: press and hold the cor-
responding button.
X To open fully: press the butto nbeyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pull the corresponding
butto nand hold it.
X To close fully: pull the buttonbeyond the
point of resistance and release it.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the correspondin gswitch again.
If you press/pull the switch beyond the point of resistance and release, automatic operation is
started in the correspondin gdirection. You can
stop automatic operation by pressing/pulling
again.
You can continue to operate the side windows
after switching off the engin eorremoving the
key. This function remains activ efor five
minutes or until the driver' sorfront-passenger
door is opened. Convenience opening feature
General notes If the key is in the immediate vicinity to the vehi-
cle, the convenience openin gfunction is availa-
ble.
Vehicles with KEYLESS-GO or KEYLESS-GO
star tfunction: you can ventilate the vehicle
before you start driving.
To do this, the key is used to carry out the fol-
lowing function ssimultaneously:
R unlock the vehicle
R open the side windows
R open the sliding sunroof or the panorama slid-
ing sunroof and the roller sunblind
R switch on the seat ventilation for the driver's
seat
The "convenience opening" feature is also avail-
able when the vehicle is unlocked.
Convenience opening feature X
Press and hold the %buttonont he key
until the side windows and the sliding sunroof
or panorama sliding sunroof are in the desired position.
If the roller sunblinds of the panorama sliding sunroof are closed, the roller sunblinds are
opened first.
X Press and hold the %buttononcem ore
until the panorama sliding sunroof reaches
the desired position.
X To interrupt convenience opening: release
the % button. Convenience closing feature
Important safet ynotes G
WARNING
When the convenience closin gfeature is oper-
ating, parts of the body could become trapped
in the closin garea of the side window and the
sliding sunroof .There is arisk of injury.
Observe the complet eclosin gprocedure
when the convenience closin gfeature is oper-
ating. When closin gmake sure that no parts of
the body are in the closin garea. 94
Side windowsOpening and closing