2019 MERCEDES-BENZ S-CLASS CABRIOLET Owner's Manual

The seat belts on
thefo llowing seats are equip‐
ped with a special seat belt retractor:
R Front passenger seat
R Rear seats
When enabled, the special seat belt retractor
ensures that the seat belts of the front
passenger seat and rear seats do not slac ken
once thech ild restra int sy stem is secured
(→ page 52). #
Installth ech ild restra int sy stem.
The entire base of thech ild restra int sy stem
must alw aysre st on the sitting sur face of the
re ar seat. #
Alw ays make sure that the shoulder belt
st ra p is cor rectly routed from the seat belt
outlet of theve hicle tothe shoulder belt
guide on thech ild restra int sy stem.
The shoulder belt stra p must be routed for‐
wa rds and down wards from the seat belt out‐
let. Note
s onrear wa rd-facing and forw ard-facing
ch ild restra int sy stems on the front
passenger seat &
WARNING Risk of inju ryor death from
using a rear wa rd-facing child restra int
sy stem when the front passenger front
airbag 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 airbag
can deploy in theev ent of an accident.
The child could be stru ck bythe airbag.
Alw ays ensure that the front passenger air‐
bag is deactivated. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
NEVER use a rear wa rd-facing child restra int
sy stem on a seat pr otected byan ENABLED
FRONT AIRB AGin front of it, DE ATH or SERI‐
OUS INJU RYtotheCH ILD can occur. Obser
vethe specific instructions forth ere ar‐
wa rd-facing and forw ard-facing child restra int
sy stems (→ page 56).
Wa rning notice on the front passenger sun visor
Alw ays obser vethest atus of the front passenger
front airbag on thePA SSENGER AIR BAG OFF
indicator lamp:
R When using a rear wa rd-facing child restra int
sy stem on the front passenger seat, the front
passenger front airbag must alw ays be disa‐
bled. This is only the case if thePA SSENGER
AIR BAG OFF indicator lamp is lit continu‐
ously (→ page 42).
R Ifth ePA SSENGER AIR BAG OFF indicator
lamp is off, the front passenger front airbag
is enabled. The front passenger front airbag
may deploy during an accident. Occupant saf
ety55

Securing
thech ild restra int sy stem with the
seat belt on the front passenger seat
When ins talling a belt-secured child restra int
sy stem on the front passenger seat, alw ays
obser vethefo llowing:
0073 Obser
vethech ild restra int sy stem manufac‐
turer's ins tallation and operating instruc‐
tions.
0073 When using a
forw ard-facing child restra int
sy stem in Group I: remo vethe head
re stra int from there spective seat, if possi‐
ble.
When youre mo vethech ild restra int sys‐
te m, ins tallth e head restra int again immedi‐
ately and adjust all the head restra ints cor‐
re ctly.
0073 The ba
ckrest of thefo rw ard-facing child
re stra int sy stem must lie as flat as possible
against the backrest of the front passenger
seat.
0073 Fo
r cer tain child restra int sy stems in weight
group II or III, there may be restrictions in
th e maximum size setting, e.g. due topossi‐
ble con tact wi th thero of. 0073
The
child restra int sy stem must not be put
under stra in between thero of and the seat
cushion and/or be ins talled facing the
wrong direction. Adjust the seat backrest
inclination accordingly.
0073 The
child restra int sy stem must not be put
under stra in by the head restra ints. Adjust
th e head restra ints according ly.
0073 Ne
ver place objects under or behind the
ch ild restra int sy stem, e.g. cushions.
The seat belt on the front passenger side is
equipped with a special seatbelt retractor.
When acti vated, the special seatbelt retractor
ensures that the seat belt does not slac ken once
th ech ild restra int sy stem is secured
(→ page 52). #
Set the front passenger seat as far back as
possible and mo vethe seat into the highest
position. #
Fully retract the seat cushion length adjust‐
ment. #
Adjust the seat cushion inclination so that
th e front edge of the seat cushion is in the highest position and
there ar edge of the
seat cushion is in the lo west position. #
Set the seat backrest toan almost vertical
position. #
Installth ech ild restra int sy stem.
The entire base of thech ild restra int sy stem
must alw aysre st on the seat cushion of the
front passenger seat. #
Alw ays make sure that the shoulder belt
st ra p is cor rectly routed from the seat belt
outlet of theve hicle tothe shoulder belt
guide on thech ild restra int sy stem.
The shoulder belt stra p must be routed for‐
wa rds and down wards from the seat belt out‐
let. #
If necessar y,adjust the seat belt outlet and
th e front passenger seat according ly.56
Occupant saf ety

Note
s on pets in theve hicle &
WARNING Risk of accident and inju ry
due toanimals left unsecured or unat‐
te nded in theve hicle
If yo u lea veanimals in theve hicle unatten‐
ded or unsecured, they could possib lypress
down buttons or switches.
Thereby an animal may: R activate vehicle equipment and become
trapped, forex ample
R swit chsystems on or off and endanger
ot her road users
Uns ecured animals may be throw n around in
th eve hicle in theeve nt of an accident or
sudden steering and braking maneuver and
injure vehicle occupants in the process. #
Never lea veanimals in theve hicle unat‐
te nded. #
Alw ays cor rectly secu reanimals while
driving, forex ample using a suitable
animal car rier. Occupant saf
ety57

SmartK
ey Overview of SmartK
eyfunctions &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R open doo rs,th ereby endangering other
persons or road users.
R get out of theve hicle and be hit by
oncoming traf fic.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, children could also set theve hi‐
cle in motion, forex ample, by:
R releasing the parking brake.
R shifting the automatic transmission out of
park position 005D.
R starting the engine #
Never lea vechildren and animals unat‐
te nded in theve hicle. #
When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle. #
Keep the SmartK eyout of there ach of
ch ildren. *
NO
TEDama getotheke y caused by
magnetic fields #
Keep theke yaw ay from strong mag‐
netic fields. 1
Locks
2 Battery check lamp
3 Unloc ks
4 Opens/closes the trunk lid
5 Panic alarm
The Sma rtKe y loc ksand unlo cksth efo llowing
components:
R Doo rs
R Trunk lid
R Glovebox
R Fuelfiller flap 58
Opening and closing

If
yo u do not open theve hicle within appr ox‐
imately 40 seconds af ter unlocking:
R The vehicle is loc ked again
R Anti- 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.
% If battery check lamp 2does not light up
af te r pressing the0036 or0037 button, the
battery is dischar ged. Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
, Vehicle .
î Vehicle Set-
tings .
Acoustic Lock #
Activate 0073or deacti vate 0053 the function. Ac
tivating/deactivating the panic alarm Re
quirements:
R The ignition is switched off %
The panic alarm function is only available in
cer tain countries. #
Toactivate: press button 1for appro x‐
ima tely one second.
A visual and audible alarm is triggered. #
Todeactivate: briefly press but ton1 again.
or #
Press thest art/ stop button on the cockpit
(the SmartK eyis inside theve hicle). Changing
the unlocking settings Po
ssible unlocking functions of the SmartK ey:
R Central unlo cking R
Unlocking the driver's door and fuel filler flap #
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
the SmartK eyfunctions If
yo u do not use theve hicle or a SmartK ey for
an extended pe riod of time, you can reduce the
energy consum ption of there spective Smart‐
Ke y . Todo so, deactivate the SmartK eyfunc‐
tions. Opening and closing
59

#
Todeactivate: pressthe0037 button on the
SmartK eytwice in quick succession.
The battery check lamp of the SmartK ey
fl ashes twice brief lyand lights up once. #
Toactivate: press any button on the Smart‐
Ke y.
% When theve hicle is star ted with the Smart‐
Ke y in thestow age compartment of the cen‐
te r console, the SmartK eyfunctions are
auto matical lyactivated (→ page132). Re
moving/inserting the eme rgency key #
Toremo ve:press release button 1.
Emer gency key2 is pushed out slight ly. #
Pull out emer gency key2 until it en gage s in
th e intermediate position.
% You can use the intermediate position of
emer gency key2 toattach the SmartK eyto
a ke yring. #
Press release button 1again and fully
re mo veemer gency key2. #
Toinser t:press release button 1. #
Insert emer gency key2 tothe intermediate
position or fully until it engages. Re
placing the SmartK eybattery &
DANG ER Serious damage tohealth
caused byswallowing batteries
Batteries contain toxic and cor rosive sub‐
st ances. Swallowing bat teries may cause
serious damage tohealth.
There is a risk of fata l injur y. #
Keep batteries out of there ach of chil‐
dren. #
If batteries are swallo wed, seek medical
attention immediately. +
ENVIRONMEN
TALNO TEEnvironmental
dama gecaused byimproper disposal of
batteries Bat
teries conta in pollutants. It is
illegal todispose of them with the household
ru bbish. #
Dispose of batteries in an
environmen tally responsible manner.
Ta ke dischar ged batteries toaqu alified
specialist workshop or toa collection
point for used batteries. 60
Opening and closing

Re
quirements:
R Yourequ ire a CR 2032 3 V cell batter y.
Mercedes-Benz recommends that you ha vethe
battery replaced at a qualified specialist work‐
shop. #
Remo vethe mechanical key (→ page 60). #
Press release button 2down fully and
re mo vecover1. #
Remo vebattery compartment 3and take
out the dischar ged batter y. #
Insert the new battery into battery compart‐
ment 3. Obser vethe positive pole marking
in the battery compartment and on the bat‐
te ry. #
Push in battery compartment 3. #
Replace co ver1 sothat it engages. Problems with
the SmartK ey Problem
Possible causes/consequences and 0050
0050Solutions
Yo u can no lon ger lock or unlock the
ve hicle. Po
ssible causes are:
R The SmartK eybattery is dischar ged or nearly dischar ged.
R There is inter fere nce from a po werful radio signal source. Opening and closing
61

Problem
Possible causes/consequences and 0050
0050Solutions
R The SmartK eyis defective. #
Check the battery using the battery check lamp and replace if necessary (→ page 60). #
Use the emer gency keyto lock or unlock (→ page 60). #
Have the SmartK eychecked at a qualified specialist workshop.
Yo u ha velost a SmartK ey. #
Have the SmartK eydeactivated at a qualified specialist workshop. #
If necessar y,ha ve the mechanical lock changed as well. Doors
Un
locking and opening doors from the inside #
Pull door handle 2.
Locking pin 1pops up when the door is
unloc ked. Locking
the doors from the inside #
Take the SmartK eywith you when exiting the
ve hicle and close the driver's door. #
Press down locking knob 1onthe driver's
door from the front passenger seat. 62
Opening and closing