2019 MERCEDES-BENZ S-CLASS CABRIOLET key battery

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

If
yo u open the trunk lid from outside, the trunk
lid is automatically 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 are:
R The SmartK eybattery is weak or dischar ged.
R There is inter fere nce from a po werful radio signal source.
R The SmartK eyis defective. #
Check the battery using the battery check lamp and replace if necessary (→ page 60). #
Use the mechanical keyto lock or unlock theve hicle (→ page 60). #
Have theve hicle and SmartK eychecked at a qualified specialist workshop. Switching
the automatic locking feature
on/off The
vehicle is loc ked automatically when the
ignition is switched on and the wheels are turn‐
ing fast erthan walking pace. 64
Opening and closing

#
Toswitch on: slidethe switch toposition
0048. #
Toswitch off: slidethe switch toposition
0047.
% If an accident has been de tected, the trunk
will unlock even if separate lo cking is
switched on. Un
locking the trunk with the emer gency
re lease from inside Re
quirements:
R The 12Vve hicle battery is connected and
ch arge d. #
Press emer gency release button 1brief ly.
The trunk lid unloc ksand opens. Un
locking the trunk lid using the mechanical
key #
Take the mechanical key out of the SmartK ey
( → page 60). #
Press theto p of Mercedes star 1. Opening and closing
71

Display messages
Possible causes/consequences and 0050
0050Solutions
00AF Replace Key Battery *T
he SmartK eybattery is dischar ged. #
Replace the battery (→ page 60).
00AF
Place the Key in the
Marked Space See Opera-
tor's Manual *T
he SmartK eydetection function is malfunctioning. #
Change the location of the SmartK eyintheve hicle. #
Start theve hicle with the SmartK eyinthe slot (→ page132).
00AF
Don't Forget Your Key *A
warning tone also sounds. This messa gereminds youto take your SmartK eywith you when you lea vetheve hicle. Display messages and
warning/indicator lamps 455

Closing using
the SmartK ey................... 75
Con venience closing feature ................ .75
Con venience opening ............................ 74
Opening .................................................72
Opening (all) .......................................... 72
Opening with the SmartK ey................... 74
Problem .................................................75
Size designation (tires) ........................... 391
SmartK ey................................................... 58
Ac oustic locking verification signal ....... 59
Battery .................................................. 60
Energy consu mption .............................. 59
Fe atures ................................................ 58
Ke yring attachment .............................. 60
Mechanical key ...................................... 60
Overview .............................................. .58
Pa nic alarm ........................................... 59
Problem ................................................. 61
Un locking setting .................................. 59
Sma rtKe y functions
Deactivating .......................................... 59
Smartphone see Android Auto
see Apple CarPlay™ see Mercedes-Benz Link
see
Telephone
Snow chains ............................................. 377
Soc ket (12 V) ............................................ 106
Fr ont center console ........................... 106
Re ar passenger compartment ............ .107
Tr unk .................................................. .107
Soft top
Care .................................................... 350
Closing (soft- top switch) ........................ 77
Closing using the SmartK ey................... 75
Opening (soft-top switch) ......................77
Opening with the SmartK ey................... 74
Problem .................................................82
Re locking .............................................. .78
Soft-top switch .......................................... 77
Software update ...................................... 255
Impor tant sy stem updates .................. 256
Information .......................................... 255
Pe rforming .......................................... 255
Sound PRE-SAFE ®
Sound ................................. 46
Wheels and tires ..................................3 76Sound
see Burmes ter®
sur round sound sy stem
see Sound settings
Sound settings ........................................3 33
Ad justing the balance/fader ............... 333
Ad justing treble, mid-range and bass
settings ............................................... 333
Au tomatic volume adjustment ............ .333
Calls up the sound menu ..................... 333
Information .......................................... 333
Special seat belt retractor ........................ 52
Speciali stwo rkshop ..................................24
Speech dialog sy stem
see Voice Cont rol Sy stem
Speed index (tires) ..................................3 91
Speedome ter
Digital ................................................. .216
Spotlight function Switching on/off ................................. 202
St andby mode
Ac tivating/deactivating ...................... .155
Fu nction .............................................. 154
St anding lights ......................................... 111 Index
505