2018 MERCEDES-BENZ C-CLASS CABRIOLET ignition

Re
stra int sy stem functionality When
the ignition is switched on, a self-test is
per form ed, during which the0075 restra int sys‐
te m wa rning lamp lights up. It goes out no later
th an a few seconds af terth eve hicle is star ted.
The components of there stra int sy stem are then
functional. Malfunctioning
restra int sy stem A malfunction has occur
red in there stra int sys‐
te m if:
R the0075 restra int sy stem warning lamp does
not light up when the ignition is switched on
R the0075 restra int sy stem warning lamp
lights up continuously or repeatedly during a
journey 000A
WARNING Risk of inju ryor fata l injury
due toa malfunction in there stra int sys‐
tem
If th ere stra int sy stem is malfunctioning,
re stra int sy stem components may be trig‐ ge
red unintentionally or might not be trig‐
ge red at all in theev ent of an accident. This
may af fect the seat belt tensioner or airbag,
fo rex ample. 0007
Have there stra int sy stem checked and
re paired immediately at a qualified spe‐
cialist workshop. Fu
nction of there stra int sy stem in an acci‐
dent How
there stra int sy stem works is de term ined by
th e se verity of the impact de tected and the type
of accident anticipated:
R Frontal impact
R Rear impact
R Side impact
R Rollover
The activation thre sholds forth e components of
th ere stra int sy stem are de term ined based on
th eev aluation of the sensor values measured at
va rious points in theve hicle. This process is pre-
em ptive in nature. The triggering/deployment of th
e components of there stra int sy stem must
ta ke place in good time at thest art of the colli‐
sion.
Fa ctors whi chcan only be seen and measu red
af te r a collision has occur red do not play a deci‐
sive role in the deployment of an airbag. Nordo
th ey prov ide an indication of airbag deployment.
The vehicle may be deformed significantly with‐
out an airbag being deplo yed. This is the case if
only parts which are relatively easily deformed
are af fected and thera te ofvehicle deceleration
is not high. Con versely, an airbag may be
deplo yedev en though theve hicle suf fers only
minor deformation. If very rigid vehicle parts
such as longitudinal members are hit, forex am‐
ple, this may result in suf ficiently high le vels of
ve hicle deceleration. Occupant saf
ety33

0007
Therefore, ha vedeplo yedpy rotech nic
seat belt tensioners immedia tely
re placed at a qualified specialist work‐
shop. Mercedes-Benz
recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident.
000E NO
TEDama gecaused bytrapping the
seat belt If an unused seat belt is not fully
retracted, it
may become trapped in the door or in the
seat mechanism. 0007
Alw ays ensure that an unused seat belt
is fully retracted. Ex
tending/r etra cting the seat belt extender The seat belt
extender forth e front seat helps
yo ufa sten your seat belt. When the door is
closed, the seat belt extender extends. The seat belt
extender button may also be loca‐
te d in the control panel abo vethe light switch in
Mercedes-AMG vehicles.
Yo u can also extend the seat belt extender using
th e seat belt extender button. 0007
Switch on the ignition. 0007
Press seat belt extender button 1.
The seat belt extender extends. The seat belt
extender retracts again in thefo l‐
lowing cases:
R the seat belt tongue is engaged in the seat
belt buckle
R the seat belt tongue is not engaged in the
seat belt buckle within 60 seconds
If yo u press seat belt extender button 1
again in this case, the seat belt extender will
ex tend again.
R there spective door is opened
R youfo ld the seat backrest forw ards
R nobody is sitting in the front passenger seat
If yo u press seat belt extender button 1
again in this case, the seat belt extender will
no longer extend.
The seat belt extender mu stalw ays be retracted
while theve hicle is in motion. Fa
stening seat belts If
th e seat belt is pulled quickly or sharpl y,the
seat belt retractor lo cks. The seat belt stra p can‐
not be pulled out any fur ther. Occupant saf
ety37

play
thest atus of the front passenger front air‐
bag.
Alw ays obser vethe no tes on the function of the
PA SSENGER AIR BAG indicator lamps
(0013 page44).
Fu nction of thePA SSENGER AIR BAG indica‐
to r lamps Ve
hicles without automatic front passenger front
airbag shutoff ha vea special sticke r af fixe dto
th e side of the cockpit on the front passenger
side (0013 page71).
Self-test of automatic front passenger front
airbag shutoff
When the ignition is switched on, a self-test is
per form ed during which the two PASSENGER
AIR BAG ON and OFF indicator lamps light up
simul taneously.
The status of the front passenger front airbag is
displa yed af terth e self-tes t:
R PASSENGER AIR BAG ON lights up for
60 seconds, subsequently bo thindicator
lamps are off (PASSENGER AIR BAG ON and
OFF): the front passenger front airbag is able
to deploy in theeve nt of an accident.
R PASSENGER AIR BAG OFF lights up continu‐
ously: the front passenger front airbag is dis‐
abled. It will then not be deplo yed in the
eve nt of an accident.
If th ePA SSENGER AIR BAG ON indicator lamp is
off, on lythePA SSENGER AIR BAG OFF indicator
lamp sho wsthest atus of the front passenger front airbag. The
PASSENGER AIR BAG OFF indi‐
cator lamp may be lit continuously or be off.
If th ePA SSENGER AIR BAG OFF indicator lamp
and the0075 restra int sy stem warning lamp
light up simultaneousl y,the front passenger seat
may not be used. Also in this case, do not fit a
ch ild restra int sy stem tothe front passenger
seat. Ha veautomatic front passenger front air‐
bag shutoff checked and repaired immediately at
a qu alified specialist workshop.
St atus display
If th e front passenger seat is occupied, ensure,
bo th before and during the journe y,that thest a‐
tus of the front passenger front airbag is cor rect
fo rth e cur rent situation.
Af terfitting a rear wa rd-facing child restra int
sy stem tothe front passenger seat:
PA SSENGER AIR BAG OFF must be lit continu‐
ousl y. 44
Occupant saf ety

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

Ac
tivating/deactivating the automatic lo ck‐
ing feature The
vehicle is loc ked automatically when the
ignition is switched on and the wheels are turn‐
ing fast erthan walking pace. 0007
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds. 0007
Todeactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds.
In thefo llowing situations, there is a danger of
being loc ked out when the function is activated:
R While theve hicle is being tow star ted/
pushed.
R The vehicle is being tested on the dynamom‐
et er. Locking/unlocking
the driver's door with the
emer gency key 0009
Ifyo u wish tolock theve hicle entirely using
th e emer gency key,firs t press the button for
locking from the inside while the driver's
door is open. Then proceed tolock the driv‐
er's door using the emer gency key. 0007
Insert the emer gency key as far as it will go
into opening 1inthe co ver. 0007
Pull and hold the door handle. 0007
Pull the co ver on the emer gency key as
st ra ight as possible away from theve hicle
until it releases. 0007
Release the door handle. 82
Opening and closing

0007
When opening, make sure that nobody
is touching the side windo w. 0007
If someone is trapped, release the but‐
to n immedia tely or pull it in order to
close the side window again. 000A
WARNING Risk of becoming trapped
when closing a side window
When closing a side windo w,body parts
could be trapped in the closing area in the
process. 0007
When closing, make sure that no body
parts are in the closing area. 0007
If someone is trapped, release the but‐
to n immedia tely or press the button in
order toreopen the side windo w. 000A
WARNING Risk of becoming trapped
when children opera tethe side windo ws
Children could become trapped if they oper‐
ate the side windo ws, particularly when unat‐
te nded. 0007
Never lea vechildren unat tended in the
ve hicle. 0007
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. Re
quirements:
R The po wer supply or the ignition is switched
on. 1
Closing
2 Opening
The buttons on the driver's door take prece‐
dence. 0007
Tostart automatic operation: pressthe
0062 button be yond the point of resis tance
or pull and release it. Opening and closing
85

0007
Tointer rupt automatic operation: press or
pull the0062 button again.
0009 Automatic operation for closing is available
on lyforth e front side windo ws.
When theve hicle is switched off, the side win‐
do ws can continue being ope rated.
The function is available for around five minutes
or until a door is opened. All side windo
wscan be opened or closed simul‐
ta neously using button 1.
0009 Only vehicles with automatic transmission
ha ve this function. 0007
Swit chon the ignition. 0007
Toopen: press and hold button 1tothe
point of resis tance. 0007
Toopen ful ly:press and hold button 1
be yond the point of resis tance. 0007
Toclose: pull and hold button 1.
Au tomatic reve rsing function of the side win‐
do ws
If an object bloc ksa side wind owduring the
closing process, the side window opens again
automaticall y.The automatic reve rsing function
is only an aid and is not a substitute foryo ur
attentiveness. 0007
When closing, make sure that no body parts
are in the closing area. 000A
WARNING Risk of becoming trapped
despi tethere being reve rsing pr otection
on the side window
The reve rse function does not react:
R tosoft, light and thin objects, e.g. fingers
R during resetting
This means that there ve rse function cann ot
pr eve nt someone from becoming trapped in
th ese situations. 0007
When closing, make sure that no body
parts are in the closing area. 0007
If someone becomes trapped, press the
0062 button toopen the side window
again. Au
tomatic function of the side windo ws The side windo
wsare closed automatically when
th eve hicle is switched off:
R if it starts torain (de tection bythera in sen‐
sor on the windscreen)
R intheeve nt of extreme outside temp eratures 86
Opening and closing

000E
NO
TEPossible damage tothe soft top
when opening or closing The soft
top can be damaged when opening
or closing. 0007
Make sure there is suf ficient clearance
ab ove it. 0007
Only load the boot below the boot sepa‐
ra tor so that it will not be pushed
upwards. 0007
Make sure that the boot lid is closed. 0007
Ifth e soft top is dirty, wet or frozen, do
not open the soft top. 000E
NO
TEDama getothe soft top caused by
heavy objects Heavy objects placed on
the soft-to p com‐
partment co ver can dama gethe soft top or
soft-to p compartment co ver. 0007
Do not place he avy objects on the soft-
to p compartment co ver. 0007
Do not sit on the soft-to p compartment
co ver. Fo
r saf etyre asons, Mercedes-Benz recommends
opening or closing the soft top when theve hicle
is stationar y.
To open or close the soft top while you are driv‐
ing, do not exceed a maximum speed of
50 km/h. Toavo id inter rupting the closing proc‐
ess while you are slightly exceeding this speed,
do not drive at a speed greater than 60 km/h. 0007
Make sure that the boot separator is closed. 0007
Close the boot lid. 0007
Switch on the ignition. 0007
Keep the brake pedal depressed when the
ve hicle is stationar y. 0007
Toopen: pull and hold the soft-to p switch
1 until the soft top is fully opened.
The multifunction display sho wsthe opening
process of the soft top. 0007
Toclose: press and hold the soft-to p switch
1 until the soft top is fully closed.
The multifunction display sho wsthe closing
process of the soft top. 90
Opening and closing