2015 MERCEDES-BENZ C-CLASS COUPE sensor

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

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 vehicl eequipment and become
trapped, for example
In addition, the children coul dalsos et the
vehicl einm otion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position Porshift manua ltransmission into
neutral
R start the engine
There is arisk of an accident and injury.
When leaving the vehicle, alwayst ake 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. Unlocking and opening the doors
from the inside
Unite dKingdom only: if the vehiclehas been
locked with the key or with KEYLESS-GO, the
double lock function is activated as standard. It is then not possible to open the doors from
insid ethe vehicle. You can deactivate the dou-
ble lock function by deactivating the interior
motion sensor (see the Digita lOwner's Manual).
The doors can then be opened from the inside
after the vehicl ehas been locked from the out-
side .The anti-theft alarm system is triggere dif
the door is opened from the inside. Switch off
the alarm (Y page78).
For all countries except the Unite dKingdom:
You can open adoor from insid ethe vehicle
even if it has been locked. If the vehicl ehas pre-
viously been locked with the key or with KEY-
LESS-GO, opening adoor from the insid ewill
trigger the anti-theft alarm system. Switch off
the alarm (Y page78). X
Pulld oor handle ;.
If the door is locked, locking knob :pops up.
The door is unlocked and opens. Centrally locking and unlockin
gthe
vehicle from the inside
You can centrally lock and unlock the vehicle
from the inside. The switches are on the driver's door. X
To unlock: press button :.
X To lock: press button ;.
When the front-passenge rdoor is closed ,the
vehicl eislocked.
This does not lock or unlock the fuel filler flap.
You cannot unlock the vehicl ecentrally from the
insid eifthe vehicl ehas been locked with the key
or KEYLESS-GO.
For all countries except the Unite dKingdom:
The doors can be opened from the inside.
If the vehicl ehas previousl ybeen locked with
the key or with KEYLESS-GO, opening adoor
from the insid ewillt rigger the anti-theft alarm
system. Switch off the alarm (Y page78).
Unite dKingdom only: if the vehiclehas been
locked with the key or with KEYLESS-GO, the Doors
87Opening and closing Z

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

If KEYLESS-GO detects
akey in the boot, the
boot lid opens again after it is closed.
If KEYLESS-GO detects asecond key outsid ethe
vehicle ,the boot lid remains closed.
If KEYLESS-GO detects akey in the boot before
the closing procedure starts, the boot lid
remains open. HANDS-FREE ACCESS
Important safety notes G
WARNING
The vehicle exhaust system can become very
hot. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. There is arisk of injury. Always
ensure that you only make aleg movement
within the detection range of sensors.
! If the key is within the rear detection range
of KEYLESS-GO, the following situations, for
example ,could leadtot he boot lid opening
unintentionally:
R using acar wash
R using ahigh-pressure cleaner
Make sure that the key is at least 3maway
from the vehicle.
General notes With KEYLESS-GO and HANDS-FREE ACCESS,
you can open or close the boot lid or stop the
procedure withou
tusing yourh ands. This is use-
ful if you have yourh ands full.Todothis, make
ak icking movement under the bumperw ith your
foot.
Observe the following points:
R Carry yourK EYLESS-GO key abouty ourp er-
son. The KEYLESS-GO key must be in the rear detection range of the vehicle.
R When making the kicking movement, make
sure that you are standing firmly on the
ground and that there is sufficient clearance
to the rear of the vehicle .You could otherwise
lose yourb alance, e.g. on ice. R
Alwayse nsure that you only make akicking
movement within the detection range of sen- sors :.
R Stand at least 30 cm awayf rom the rear area
whiled oing so.
R Do not come into contact with the bumper
whilem aking the kicking movement. Other-
wise,t he sensors may not function correctly.
R HANDS-FREE ACCESS does not function
when the engine is started.
R Dirt causedbyr oad salt around sensors :
may restrict functionality.
Using HANDS-FREE ACCESS with apros-
thetic leg may restrict functionality.
R IfaK EYLESS-GO key is within the rear detec-
tion range of KEYLESS-GO, HANDS-FREE
ACCESS could be triggered. The boot lid could
thus be opened or closed unintentionally ,for
example ,ifyou:
- fold the ballc oupling in or out
- coupleoru ncoupleatrailer
- fit or remove arear-mounted bicycl erack
- load/unload bicycles on/from arear-
mounted bicycl erack
- sit on the edge of the boot
- set down or lift up an object behind the
vehicle
- polish the rear of the vehicle
Do not carry the KEYLESS-GO key abouty our
person in such situations. This willp revent the
unintentional opening/closing of the boot. Boot
91Opening and closing Z

Operation
X
To open/close: kick into sensor detection
range :under the bumper with your foot.
Aw arning tonew ill sound while the boot lid is
opening or closing.
X If the boot lid does not open/close after
several attempts: wait at least ten seconds
then kick under the bumper oncea gain.
If you hold your foot under the bumper for too
long, the boot lid does not open or close. Repeat
the kicking movemen tmore quickly if this
occurs.
To stop the opening or closing procedure:
R move your foot in sensor detection range :
under the bumper, or
R press the closing button on the boot lid, or
R press the Fbutton on the key
If the boot lid closing procedure has been stop-
ped:
R move your foot under the bumper again and
the boot lid will open
If the boot lid opening procedure has been stop-
ped:
R move your foot under the bumper again and
the boot lid will close Opening and closing automatically
from the inside
Important safet ynotes G
WARNING
Combustion engine semit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when the engine is running, espe- cially if the vehicle is in motion
.There is arisk
of poisoning.
Always switch off the engin ebefore opening
the boot lid. Never drive with the boot lid
open. G
WARNING
The reversing function does not react:
R to soft ,light and thin objects, e.g. fingers
R over the last 8mmofthe closing path
The reversing feature cannot preven tsome-
one being trapped in these situation sinpar-
ticular. There is arisk of injury.
When closing make sure that no body parts
are in the closing area.
If someon eistrapped:
R press the Fbutton on the key or
R pull or press the remot eoperatin gswitch
on the driver's door or
R press the closing or lockin gbutton on the
boot lid.
Vehicles with HANDS-FREE ACCESS:
It is also possible to stop the closing process by performing akicking movemen tunder the rear
bumper.
! The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearanc eabove the boot lid.
The opening dimension softhe boot lid can be
found in the "Vehicle data" section
(Y page 377).
Opening and closing 92
BootOpening and closing

Vehicles with KEYLESS-GO or KEYLESS-GO
start function: if the key is in the immediate
vicinity to the vehicle, the convenience closing
function is available.
Whe nyou lock the vehicle, yo ucan simultane-
ously:
R close the sid ewindows
R close the sliding sunroo forthe panorama
sliding sunroof
On vehicles with apanorama sliding sunroof,
yo uc an then close the rolle rsunblinds.
Note sont he automatic reversing feature for:
R the sid ewindow s(Ypage 93)
R the sliding sunroo forthe panorama sliding
sunroo f(Ypage 97)
Usin gthe key X
Press and hol dthe & button unti lthe side
window sand the sliding sunroo forthe pano-
ram asliding sunroo fare fully closed.
X Make sure that al lthe sid ewindow sand the
sliding sunroo forpanorama sliding sunroof
are closed.
X Vehicles with panorama sliding sunroof:
press and hol dthe & button once more
unti lthe rolle rsun blind softhe panorama slid-
ing sunroo fclose.
X To interrupt convenience closing: release
the & button.
Usin gKEYLESS -GO The driver'
sdoorand the doo ratwhich the han-
dl eisu sedm ustb oth be closed .The key mus tbe
outsid ethe vehicle. The ga pbetween the key
and the corresponding doo rhandles houl dnot
be greate rthan 1m. X
Touch recesse dsensor surface :on the
doo rhandleu ntilthe sid ewindow sand the
sliding sunroo forthe panorama sliding sun-
roo fare fully closed.
Make sure yo uonly touch recesse dsensor
surface :.
X Make sure tha tallthe sid ewindow sand the
sliding sunroo forpanorama sliding sunroof
are closed.
X Vehicles with panorama sliding sunroof:
touch recesse
dsensor surface :on the door
handl eagain untilthe rolle rsunblind soft he
panorama sliding sunroo fclose.
X To interrupt convenience closing: release
recesse dsensor surface :on the doo rhan-
dle. Resetting the side windows
If as idew indow can no longer be closed fully,
yo um ustreset it.
X Close al ldoors.
X Turn the key to position 1or 2in the ignition
lock.
X Pull the corresponding switch on the door
control panel unti lthe sid ewindow is com-
pletel yclosed (Y page 94).
X Hol dthe switch for an additiona lsecond.
If the sid ewindow opens agai nslightly:
X Immediately pull the corresponding switch on
the doo rcontrol panel unti lthe sid ewindow is
completely closed (Y page 94).
X Hol dthe switch for an additiona lsecond.
X If the corresponding sid ewindow remains
closed afte rthe button ha sbeenr eleased ,the
sid ew indow ha sbeenr eset correctly .Ifthis is
not the case, repea tthe step sabove again. Side windows
95Opening and closing Z

Rain-closin
gfeature Whe
nthe key is in position 0in the ignition lock
or is removed ,the sliding sunroof closes auto-
matically:
R if it starts to rain
R at extreme outsid etemperatures
R afte rsix hours
R if there is amalfunction in the power supply
The rea rofthe sliding sunroof is then raised in
order to ventilate the vehicl einterior.
If the sliding sunroof is obstructe dwhenb eing
closed by the rain-closing feature ,itopens again
slightly. The rain-closing feature is then deacti-
vated.
The sliding sunroof doe snot close if:
R it is raised at the rear.
R it is blocked.
R no rai nisfalling on the are aofthe windscreen
being monitored by the rai nsensor, e.g.
because the vehicl eisunderabridge or in a
carport.
Resetting !
If the sliding sunroof stil
lcanno tbeo pened
or closed fully afte rresetting ,contact aquali-
fie ds pecialist workshop.
Reset the sliding sunroof if it doe snot operate
smoothly.
X Turn the key to position 1or 2in the ignition
lock.
X Raise the sliding sunroof fully at the rear
(Y page 97).
X Press and hol dthe 3 switch presse dfor
another second.
X Make sure that the sliding sunroof can be fully
opened and closed agai n(Ypage 97).
X If this is not the case, repea tthe step sabove
again. Operating the panorama sliding sun-
roof
Opening and closing :
To raise
; To open
= To close/lower
The panorama sliding sunroof can only be oper-
ate dw hent he rolle rsunblind sare open.
X Turn the key to position 1or 2in the ignition
lock.
X Press or pull the 3switch in the corre-
sponding direction.
If yo upress or pull the 3switch beyond the
point of resistance, automatic operation is star- ted in the corresponding direction. Yo ucan stop
automatic operation by pressing or pulling
again.
If the panorama sliding sunroof is raised at the
rear, it automaticall ylowers slightlyathigher
speeds .The nois elevel in the vehicl einterio ris
reduce dasaresult. At lo wspeeds it raises again
automatically.
You can also temporaril ydeactivate automatic
lowering .Todos o, press the 3button. The
panorama sliding sunroof raises agai nautomat-
ically.
Yo uc an continu etooperate the panorama slid-
ing sunroof afte rswitching off the engine or
removing the key .Thisf unction remains active
for five minutes or unti lyou ope naf ront door.
The panorama sliding sunroof canno tbeo pened
if ar oofcarrie risfitted. In order to allo wventi-
lation of the vehicl einterior, yo ucan raise the
panorama sliding sunroof .Ifaroofcarrier
approved by Mercedes-Benz make scontact
with the panorama sliding sunroof ,the sunroof
will lowe rslightl ybutremain raised in the rear. 98
Sliding sunroofOpening and closing