ignition MERCEDES-BENZ E-CLASS CABRIOLET 2018 Owner's Manual

Restra int sy stem functionality
When the ignition is switched on, a sy stem self-
te st is per form ed, during which the0075
re stra int sy stem warning lamp lights up. It goes
out no later than a few seconds af terth eve hicle
is star ted. The components of there stra int sys‐
te m are then functional.
Malfunctioning restra int sy stem
A malfunction has occur red in there stra int sys‐
te m if:
RThe 0075 restra int sy stem warning lamp
does not light up when the ignition is
switched on.
RThe 0075 restra int sy stem warning lamp
lights up continuously or repeatedly during a
journe y.
0071
WARNING Risk of injury orfata l injury
due toa malfunction in there stra int sys‐
te m
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 theeve nt of an accident. This
may af fect the Emer gency Tensioning Device
or airbag, forex ample.
00BBHa ve 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:
RFr ontal impact
RRe ar impact
RSide impact
RRo llover 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 should
ta ke place in good time at thest art of the colli‐
sion.
Fa ctors whi chcan only be seen and measure d
af te r a collision has occur red cann otplay a deci‐
sive role in air bag deployment, nor do they pro‐
vide an indication of air bag deployment.
The vehicle may be deformed significantly with‐
out an air bag 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 air bag 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, theve hicle deceleration may be high enough
fo rth is to happen.
32
Occupant saf ety

00BBMake surethat the seat belts are
undamaged, not wornand clean.
00BBAlw ays ha vethe seat belts checked
immediately af ter an accident at a
qu alified specialist workshop.
Only use seat belts that ha vebeen appr ovedfo r
yo ur vehicle byMercedes-Benz.
0071
WARNING Risk of injury or death from
deplo yedpy rotech nic Emergency Ten‐
sioning Devices
Pyro tech nic Emergency Tensioning Devices
th at ha vebeen deplo yed are no longer opera‐
tional and are unable toper form their inten‐
ded pr otective function.
00BBTherefore, ha vedeplo yedpy rotech nic
Emergency Tensioning Devices immedi‐
ately replaced at a qualified specialist
wo rkshop.
Mercedes-Benz recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident. 0075
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.
00BBAlw 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.
Yo u can also extend the seat belt extender using
th e seat belt extender button.
00BBSwitch on the ignition.
00BBPress seat belt extender button 1.
The seat belt extender extends.
The seat belt extender is retracted again if:
Rth e seat belt tongue is engaged in the seat
belt buckle
Rth e seat belt tongue is not engaged in the
seat belt buckle within 60 seconds
36 Occupant saf ety

Function of thePA SSENGER AIR BAG indica‐
to r lamps
Sy stem self-te st
When the ignition is switched on, a sy stem self-
te st is per form ed during which the two
PA SSENGER AIR BAG ON and OFF indicator
lamps light up simultaneousl y.The
status of the front passenger air bag is dis‐
pla yed af terth e sy stem self-tes t:
RPASSENGER AIR BAG ON lights up for
60 seconds, subsequently bo thPASSENGER
AIR BAG ON and OFF indicator lamps are off:
th e front passenger air bag is able todeploy
in theeve nt of an accident.
RPASSENGER AIR BAG OFF lights up continu‐
ously: the front passenger air bag is deactiva‐
te d. It will then not be deplo yed in theeve nt
of an accident.
If th ePA SSENGER AIR BAG ON indicator lamp is
off, only thePA SSENGER AIR BAG OFF indicator
lamp sho wsthest atus of the front passenger air
bag. The PASSENGER AIR BAG OFF indicator
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 ins tall
a ch ild restra int sy stem on the front passenger
seat. Ha vethe automatic front passenger 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 durin
g
the journe y,that thest a‐
tus of the front passenger air bag is cor rect for
th e pr evailing situation.
Af ter in stalling a rear wa rd-facing child
re stra int sy stem tothe front passenger
seat: PASSENGER AIR BAG OFF must be lit con‐
tinuousl y.
0071
WARNING Risk of injury or death from
using a rear wa rd-facing child restra int
sy stem when the front passenger air bag
is enabled
If yo u secure a child in a rear wa rd-facing
ch ild restra int sy stem on the front passenger
seat and thePA SSENGER AIR BAG OFF indi‐
cator lamp is off, the front passenger air bag
can deploy in theev ent of an accident.
The child could be stru ck bythe air bag.
Alw ays ensure that the front passenger air
bag is disabled. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
Occupant saf ety 43

Ifyo udo not open theve hicle within appr ox‐
imately 40 seconds af ter unlocking:
RThe vehicle is loc ked again
RAnti- theft pr otection is reactivated
Do not keep the SmartK eytoge ther with elec‐
tronic devices or me tal objects. This can af fect
th e SmartK ey's functionality.
00CE If battery check lamp 2does not light up
af te r pressing the0036 or0037 button, the
battery is dischar ged.
Changing the SmartK eybattery (
→page 59).
Activating/deactivating the acoustic lo cking
ve rification signal
Multimedia sy stem:
00869HKLFOH00CFî 9HKLFOH 6HW
WLQJV00CF$FRXVWLF /RFN
00BBAc tivate 0073or deacti vate 0053 the function.
Ac tivating/deactivating the panic alarm
Re quirements
00CE The panic alarm function is only available in
cer tain countries.
RThe ignition is switched off.
00BBTo activate: press button 1for app rox‐
ima tely one second.
A visual and audible alarm is triggered.
00BBTo deactivate: briefly press but ton1 again.
or
00BBPress thest art/ stop button on the dash‐
board (the SmartK eyis inside theve hicle).
Changing the unlocking settings
Po ssible unlocking functions of the SmartK ey:
RCentral unlo cking
RUn locking the driver's door and fuel filler flap
00BBTo switch 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 selecte d:
RPressingthe0036 button a second time cen‐
trally unloc kstheve hicle.
RVe hicles 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.
Re ducing the energy consu mption of the
SmartK ey
Allvehicles: ifyo udo not use theve hicle or a
SmartK eyfor an extended pe riod of time, you
can reduce the energy consum ption of the
58
Opening and closing

ProblemPossible causes/consequences and 0050Solutions
RThe SmartKeyis defective.
00BBActivate KEYLESS-GO .
00BBCheck the battery using the battery check lamp and replace if necessary .
00BBUse the mechanical keyto lock or unlock theve hicle .
00BBHa ve theve hicle and SmartK eychecked at a qualified specialist workshop.
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.
00BBTo activate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds.
00BBTo deactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds.
There is a danger of being loc ked out if the func‐
tion is activated:
RWhile theve hicle is being tow star ted/
pushed.
ROn a roller dynamome ter.
64
Opening and closing

00BBWhen leavingtheve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle.
00BBNe ver lea vechildren unatte nded inthe
ve hicle.
Re quirementsRThe po wer supply or the ignition is switched
on.
1Closes
2Opens
The buttons on the driver's door take prece‐
dence.
00BBTo start automatic operation: pressthe
0062 button be yond the point of resis tance
or pull and release it.
00BBTo inter rupt automatic operation: press or
pull the0062 button again.
00CE Automatic operation for closing is available
only forth 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.
72 Opening and closing

All side windowscan be opened or closed simul‐
ta neously using button 1.
00BBSwitch onthe ignition.
00BBTo open: press and hold button 1tothe
pressure point.
00BBTo open full y:press and hold button 1
be yond the pressure point.
00BBTo close: 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.
00BBWhen closing, make sure that no body parts
are in the closing area.
0071
WARNING Risk of becoming trapped
despite there being reve rsing pr otection
on the side window
The reve rsing function does not react:
Rto soft, light and thin objects, e.g. small
fi ngers
Rdu ring resetting
This means that there ve rse function cannot
pr eve nt someone from becoming trapped in
th ese situations.
00BBWhen closing, make sure that no body
parts are in the closing area.
00BBIf someone becomes trapped, press the
0062 button toopen the side window
again.
Con venience opening (ventilating theve hicle
before starting a journey)
0071
WARNING Risk of entrapment when
opening a side window
When opening a side windo w,parts of the
body could be dr awn in or become trapped
between the side window and window frame.
00BBWhen opening, make sure that nobody
is touching the side windo w.
00BBRelease the button immediately if
somebody becomes trapped.
0071 WARNING Risk of becoming trapped
when opening/closing the soft top .
When opening or closing the soft top, there
is a risk that parts of the body could become
trapped bymoving parts such as thero of
mechanism, the trunk lid, or the side win‐
do ws .
00BBWhen opening or closing, make sure
that no body parts are in the vicinity of
moving components.
Opening and closing 73

0075NO
TEDama getothe soft top caused by
heavy objects
Heavy objects placed on the soft- top com‐
partment co ver can dama gethe soft top or
soft- top compartment co ver.
00BBDo not place heav yobjects on the soft-
to p compartment co ver.
00BBDo not sit on the soft- top compartment
co ver.
Fo r saf etyre asons, Mercedes-Benz recommends
opening or closing the soft top when theve hicle
is stationar y.
Do not exceed a maximum speed of 30 mph
(50 km/h) when driving (max. 35 mph
(60 km/h) to avoid inter rupting the closing proc‐
ess in theeve nt of slight excess speed).
00BBMake sure that the trunk separator is closed.
00BBClose the trunk lid.
00BBSwitch on the ignition.
00BBKe ep the brake pedal depressed when the
ve hicle is stationar y.
00BBToopen: pull and hold soft- top switch 1
until the soft top is fully opened.
The multifunction display sho wsthe opening
process of the soft top.
00BBTo close: press and hold soft- top switch 1
until the soft top is fully closed.
The multifunction display sho wsthe closing
process of the soft top.
0071
WARNING Risk of accident due to too
high speed during the soft- top opening
or closing procedure
If th eve hicle speed exceeds 35 mph
(60 km/h) the soft topstops during the
opening or closing procedure.
This impairs your view tothere ar.
00BBRe duce theve hicle speed tobelow
35 mph(6 0 km/h) or stop theve hicle,
paying attention toroad and traf fic con‐
ditions.
00BBOpe rate the soft- top switch again in
order toopen or close the soft top full y.
The cur rent procedu reisstopped at a speed
abo ve35 mph(6 0 km/h). The 2SHQ&ORVH &RQ
YHUWLEOH 7RS &RPSOHWHO\ messageis shown on
th e multifunction displa y.
00BBReduce your speed and press or pull soft- top
switch 1again.
If th e soft top does not close fully because of
stro ng headwinds, drive slowe r orstop.
Opening and closing 77

Relocking the soft top
0071
WARNING Risk of becoming trapped
due tothe soft top lo wering unexpect‐
ed ly
If yo udo not fully open/c losethe soft top,
th e soft- tophy draulics depressurize af ter a
short time.
This causes the soft topto lowe r unexpect‐
edly and may cause you or others tobe trap‐
ped.
00BBAlw ays fully open or close the soft top.
Ifth e soft top is not loc ked fully:
RThe 2SHQ&ORVH &RQYHUWLEOH 7RS &RPSOHWHO\
message is shown on the multifunction dis‐
pla y.
RYouwill hear a warning tone for up to te n
seconds when pulling away or while driving.
00BBPull over and stop theve hicle safely as soon
as possible, paying attention toroad and traf‐
fi c conditions.
00BBSwitch on the ignition.
00BBFu lly close the soft top using the soft- top
switch.
Opening and closing the trunk sepa rator
The trunk separator co vers luggage or loads in
th e trunk.
Depending on the equipment, theve hicle may be
equipped with a manual or automatic trunk sep‐
arator.
The soft top can be opened only when the man‐
ual trunk separator is closed.
In vehicles with an automatic trunk separator,
th is automatically closes when the soft top is
opened.
0075 NO
TEDama getothe soft top or load
The soft top or load may be damaged with
th e soft top open.
00BBDo not place any overly lon gobjects
inside or behin dth e side parcel nets
when the trunk separator is open.
00BBMake sure that the load does not push
th e trunk separator upwards.
00BBVe hicles with a manual trunk separator:
to open, push trunk separator 2bythe han‐
dle against the direction of the ar row toits
upper end position.
78 Opening and closing

00BBVehicles with a manual trunk separator:
to close, pull trunk separator 2bythe han‐
dle in the direction of the ar row until it rests
on the sides of the trunk.
00BBVe hicles with an automatic trunk separa‐
to r:press but ton1.
Tr unk separator 2opens or closes automat‐
icall y.
00CE Ifth ere is sy stem failure, the automatic trunk
separator can be closed manually.
Ac tivating or deactivating AI RCAP
AIRCA Pre duces the draft in the front and rear
compartments when you are drivingwit hth e
soft top open.
Pa rticular lyturbulent air can reduce the ef fect of
AIR CAP.This can arise when you are driving
behind ano ther vehicle or if there is a crosswind,
fo rex ample.
AI RCA P consists of thefo llowing components:
Ra wind deflector abo vethe windshield
Ra draft stop behind bo threar seat head
re stra ints When AI
RCAP is activated, the wind deflector
and the draft stop extend simultaneously.
AIR CAP can be activated or deactivated at
speeds of up toappr oximately 100mp h
(160 km/h).
0071 WARNING Risk of becoming trapped
when retracting AIR CAP
When retracting AIR CAP,persons could
become trapped in the moving mechanism.
00BBMake sure that persons do not hold
onto the upper frame of the windshield
and do not touch the AIR CAP wind
deflector.
00BBSwitch on the ignition.
00BBTo activate: pull button 1.
AIR CAPex tends and the indicator lamp on
button 1lights up.
00BBTodeactivate: press button 1.
AIR CAPre tracts and the indicator lamp on
button 1goes out.
Opening and closing 79