2018 MERCEDES-BENZ C-CLASS CABRIOLET keyless

If
th eve hicle is not opened within appr oximately
40 seconds af ter unlocking, it loc ksagain. Anti-
th eft pr otection is primed again.
Do not keep theke yto ge ther with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y.
0009 If battery check lamp 2does not light up
af te r pressing the0036 or0037 button, the
battery is dischar ged.
Re placing theke y bat tery ( 0013 page76). Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
0018 Vehicle 0019
î Vehicle settings
0019 Acoustic lock 0007
Activate 0073or deacti vate 0053 the function. Ac
tivating/deactivating the panic alarm Re
quirements:
R The ignition is switched off 0009
The panic alarm function is only available in
cer tain countries. 0007
Toactivate: press button 1for appro x‐
ima tely one second.
A visual and audible alarm is triggered. 0007
Todeactivate: briefly press but ton1 again.
or 0007
Press thest art/ stop button on the cockpit
(the key is inside theve hicle). Changing
the unlocking settings Po
ssible unlocking functions of theke y:
R cent ral unlocking R
unlocking the driver's door and fuel filler flap 0007
Toswitch between settings: pressthe
0036 and0037 buttons simultaneously for
appr oximately six seconds until the battery
ch eck lamp flashes twice.
If th e unlocking function forth e driver's door
and fuel filler flap has been selec ted:
R pressing the0036 button a second time cen‐
trally unloc kstheve hicle
R Vehicles with KEYLESS-GO: ifyo uto uch
th e inner sur face of the door handle on the
driver's door, only the driver's door and fuel
fi ller flap are unlo cked. Deactivating
theke y functions If
yo u do not use theve hicle or a keyfo r an
ex tended pe riod of time, you can reduce the
energy consum ption of there spective key.Todo
so, deactivate theke y functions. Opening and closing
75

Problem
Possible causes/consequences and 0050
0050Solutions 0007
Check the battery using the battery check lamp and replace if necessary (0013 page76). 0007
Use the emer gency keyto lock or unlock (0013 page76). 0007
Have theke ych ecked at a qualified specialist workshop.
Yo u ha velost a key. 0007
Have theke y deacti vated at a qualified specialist workshop. 0007
If necessar y,ha ve the mechanical lock changed as well. Doors
Note
s onthe additional door lock The additional door lock is only
available for
ve hicles forth eUni ted Kingdom. 000A
WARNING Risk of inju ryto persons
inside theve hicle when the additional
door lock is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. If
th ere are persons in theve hicle, they can
no longer le aveth eve hicle, e.g. in hazardous
situations. 0007
Never lea vepersons unattended in the
ve hicle, particularly children, elderly
persons or persons in need of help. 0007
Ifth ere are persons in theve hicle, do
not activate the additional door loc k. The additional door lock is automatically activa‐
te d in thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO. If
th eve hicle has been loc ked via Mercedes me
connect, the additional door lock is not activa‐
te d.
If th e additional door lock is activated, the doors
cann otbe opened from the inside.
0009 After locking you can issue a signal with the
horn.
Yo u can pr eventthe additional door lock from
being activated bydeactivating interior pr otec‐
tion before locking theve hicle (0013 page 99). 78
Opening and closing

0007
Tounlo cktheve hicle: touch the inner sur‐
fa ce of the door handle. 0007
Tolock theve hicle: touch sensor sur face
1 or2. 0007
Convenience closing: touch recessed sen‐
sor su rface 2until the closing procedure is
comple te. 0009
Further information on con venience closing
(0013 page 87).
If yo u open the boot lid from outside it is auto‐
matically unloc ked. Problems with KEYLESS-GO
Problem
Possible causes/consequences and 0050
0050Solutions
Yo u can no lon ger lock or unlock the
ve hicle using KEYLESS-GO. Po
ssible causes:
R The key functions ha vebeen deactivated (0013 page75).
R The key bat tery iswe ak or dischar ged.
R There is inter fere nce from a po werful radio signal source.
R The key is faulty. 0007
Activate theke y functions (0013 page75). 0007
Check the battery using the battery check lamp and replace if necessary (0013 page76). 0007
Use the emer gency keyto unlo ckor lock theve hicle (0013 page76). 0007
Have theve hicle and keych ecked at a qualified specialist workshop. Opening and closing
81

mechanism,
the boot lid, or the side win‐
do ws. 0007
When opening or closing, make sure
that no body parts are in the vicinity of
moving components. 0007
Release the button if somebody
becomes trapped. 0007
Press and hold the0037 button on thekey.
The following functions are per form ed:
R The vehicle is loc ked.
R The soft top is closed.
The side windo wsare closed when the
soft top is closed. 0007
Tointer rupt convenience closing: release
th e0037 button.
0009 Con venience closing wi thKEYLESS-GO only
closes the side windo ws (0013 page 80). Problems with
the side windo ws Problem
Possible causes/consequences and 0050
0050 Solutions
A side window cann otbe closed and
yo u cannot see the cause. 0007
Check tosee whe ther any objects are in the window guide.
000A WARNING Risk of becoming trapped or fata lly injured if reve rsing pr otection is not activated
If yo u close a side wind owagain immediately af ter it has been bloc ked or reset, the side window closes
with increased or maximum forc e. The reve rsing feature is then not active.
Pa rts of the body could become trapped in the closing area in the process. 0007
Make sure that no parts of the body are in the closing area. 0007
Tostop the closing process, release the button or press the button again toreopen the side win‐
do w. If a side window is obstructed during closing and
reopens again slightly: 88
Opening and closing

R
when the boot lid is opened
R when the bonn etis opened
R when interior pr otection is triggered
(0013 page 98)
R when tow- aw ay protection is triggered
(0013 page97)
The ATA sy stem is primed automatically af ter
appr oximately ten seconds in thefo llowing situa‐
tions:
R afte r locking theve hicle with thekey
R afte r locking theve hicle using KEYLESS-GO Indicator lamp
1flashes when theAT A sy stem
is primed.
The ATA sy stem is deactivated automatically in
th efo llowing situations:
R afte r unlocking theve hicle with thekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(0013 page150) R
afte r unlocking theve hicle using KEYLESS-
GO
0009 When the Mercedes‑Benz emer gency call
sy stem is active and the alarm stay s on for
more than 30 seconds, a message is auto‐
matically sent tothe Cus tomer Assis tance
Centre (0013 page 350).
Deactivating theATA 0007
Press the0036, 0037or008B button on the
key.
or 0007
Press thest art/ stop button with theke y in
th estow age compartment (0013 page150)
Deactivating the ala rmusing KEYLESS-GO: 0007
Grasp the outside door handle with thekey
outside theve hicle. Fu
nction of tow- aw ay protection An audible and visual alarm is triggered if an
alteration
to yourvehicle's angle of inclination is
de tected while tow- aw ay protection is primed. Opening and closing
97

To
w- aw ay protection is automatically primed
af te r about 60 seconds:
R afte r locking theve hicle with thekey
R afte r locking theve hicle using KEYLESS-GO
To w- aw ay protection is only primed when thefo l‐
lowing components are closed:
R the doors
R the boot lid
To w- aw ay protection is automatically deactiva‐
te d:
R afte r pressing the0036 or008B button on
th ekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(0013 page150)
R afte r unlocking theve hicle using KEYLESS-
GO
Information on de tecting damage on a pa rked
ve hicle (0013 page182). Priming/deactivating
tow- aw ay protection Multimedia sy
stem:
0018 Vehicle 0019
î Vehicle settings
0019 Tow-away protection 0007
Activate 0073or deacti vate 0053 the function.
To w- aw ay protection is primed again in thefo l‐
lowing cases:
R The vehicle is unloc ked again.
R A door is opened.
R The vehicle is loc ked again. Fu
nction of interior pr otection When interior pr
otection is primed, a visual and
audible alarm is triggered if mo vement is de tec‐
te d in theve hicle interior.
Interior pr otection is primed automatically af ter
appr oximately ten seconds:
R afte r locking theve hicle with thekey
R afte r locking theve hicle using KEYLESS-GO Interior pr
otection is only primed when thefo l‐
lowing components are closed:
R the doors
R the boot lid
Interior pr otection is automatically deactivated:
R afte r pressing the0036 or008B button on
th ekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(0013 page150)
R afte r unlocking theve hicle using KEYLESS-
GO
The following situations can lead toafa lse
alarm:
R moving objects such as masc ots in theve hi‐
cle interior
R when the side window is open 98
Opening and closing

Switching Blu
etoo th®
profile (DUN/
PA N) .................................................... 354
Internet radio
Calling up ............................................ 358
Deleting stations ................................ .359
Logging out ......................................... 360
Overview ............................................. 359
Re gis tering .......................................... 360
Saving stations .................................... 359
Selecting and connecting toast ation
............................................................ .359
Selecting stre am ................................ .360
Setting options ................................... .360
Te rm s of use ........................................3 60
Ionisation Activating/deactivating (multimedia
sy stem) ................................................ 14 5
iPhone ®
see Apple CarPlay™
see Mercedes-Benz Link
ISOFIX child seat securing sy stem
Fitting .................................................... 63
Seats suitable for attaching ................... 58 J
Jack Declaration of conformity ...................... 25
Storage location ..................................4 44
Jump-start connection ............................420
Gene ral no tes ...................................... 41 8 K
Ke y.............................................................. 74
Ac oustic locking verification signal ........ 75
Battery ................................................... 76
Emergency key ...................................... .76
Energy consumption .............................. 75
Fe atures ................................................ 74
Ke yring attachment .............................. 76
Overview ................................................ 74
Pa nic alarm ............................................ 75
Problem .................................................77
Un locking setting .................................. .75
Ke y functions
Deactivating .......................................... 75
KEYLESS-GO Locking theve hicle ................................ 80
Problem .................................................81 Un
locking setting .................................. .75
Un locking theve hicle ............................80
Kickd own.................................................1 65
Using ................................................... 16 5
Knee airbag ................................................ 39 L
Lamp see In terior lighting
Lamps (instrument display) see Warning/indicator lamps
Lane de tection (au tomatic)
see Active Lane Keeping Assist
Lane Keeping Assist
see Active Lane Keeping Assist
Language .................................................2 93
No tes .................................................. 293
Setting .................................................2 93
LED light see Intelligent Light Sy stem
Le vel control sy stem
see AIRMATIC Index
561

Displ
aying traf fic incidents .................. 320
Extending a subscription ...................... 319
Issuing hazard alert s ............................3 21
Re gis tering on Mercedes me ............... 319
Loading .................................................... .118
No tes ................................................... 11 4
St ow age space under the boot floor ....1 19
Ti e-down eyes ...................................... 11 8
Loading guidelines ...................................114
Loads Securing .............................................. .114
Locator lighting see Sur round lighting
Locking/unlocking Activating/deactivating the auto‐
matic locking feature ............................ .82
Ad ditional door lock .............................. 78
Digital Vehicle Keyst icke r ..................... 79
Emer gency key ...................................... 82
KEYLESS-GO .......................................... 80
Mobile phone ........................................ 79
Smartphone .......................................... 79
Un locking/opening the doors from
th e inside ..............................................79 Low beam
(symm etrical dipped beam) ................. 127
Switching on/off ................................. 127
Lu bricant additives
see Additives
Lu ggage
Lu ggage net ......................................... 11 8
Secu ring ............................................... 11 4
Lu mbar support
see Lumbar support (4-w ay)
Lu mbar support (4-w ay)........................ .104 M
Maintenance see ASS YST PLUS
Malfunction Restra int sy stem ................................... 33
Manual transmission Operating thege arshift le ver ............... 16 0
Map .......................................... .319, 321, 322
Av oiding an area ..................................3 24
Av oiding an area (o verview) ................ .324
Changing an area ................................ 324 Deleting an area .................................. 325
Displaying Qibla .................................. 326
Displaying the compass ....................... 326
Displaying the map version .................. 324
Displaying the next intersecting
st re et ................................................... 323
Displaying the satellite map ................3 27
Displ aying the tra ffic map .................... 319
Displ aying weather information .......... .327
Map data ............................................. 325
Moving ................................................ 322
Overview ..............................................3 21
Selecting POI symbols ......................... 323
Selecting text information ................... 323
Selecting the map orientation .............3 23
Setting the map scale .......................... 322
Setting the map scale automatically ....3 26
Up dating .............................................3 25
Map and comp ass
Overview .............................................. 321
Massage prog rammes
Re setting the settings .......................... 106
Selecting the front seats ..................... 106
Massage settings Resetting ............................................. 106 Index
563