2018 MERCEDES-BENZ S-CLASS CABRIOLET air conditioning

vehicle is unloc ked. When youstart theve hicle,
th e sur round lighting is switched off and auto‐
matic driving lights are activated.
Interior lighting
Ad justing the in terior lighting
#1 p Switches the front left-hand reading
lamp on/off
#2 | Switches the automatic interior
lighting control on/off
#3 c Switches the front interior lighting
on/off
#4 u Switches there ar interior lighting
on/off
#5 p Switches the front right-hand read‐
ing lamp on/off
Ad justing the ambient lighting
Multimedia sy stem:
,Vehicle.÷ Light Settings.Ambi-
ent Light
Setting the color
#Select Color.
#Set a colo r.
Ad justing the brightness
#Select Brightness .
#Set a brightness value.
Ac tivating the brightness for zones
#Select Brightness Zones .
#Activate Oor deacti vate ª the function.
The Display ,Front andRear zones can be set
separately. %
Setting brightness zones is not available for
th eRe ar Seat En tertainment Sy stem.
Ac tivating multi-color lighting
#Select Multi-color.
#Activate Oor deacti vate ª the function.
There are ten preset color combinations
av ailable.
Ac tivating multi-color animation
#Select Multi-color Animation.
#Activate Oor deacti vate ª the function.
The chosen color combination changes at
predefined inter vals.
Ac tivating dependency on air conditioning
settings
#Select Climate .
#Activate or deacti vate the function.
If ch anges are made tothete mp erature set‐
ting in theve hicle, the color of the ambient
lighting changes brief ly.
Ac tivating welcome lighting
#Select Welcome.
Light and visibility 11
3

Overview of climate control systems
Overview of the operating unit for automatic
climate control
The indica tor lamps in the buttons indicate that
th e cur rent function is acti vated.
1Ã Sets climate control toautomatic, left
(→page 122)
2w Setsthete mp erature, left
3K Setsthe air flow , left
4g Switches air-recirculation mode on/off
(→page 123)
5¬ Demists the windshield
6t Calls up the air conditioning menu
7¤ Switches there ar wind owheater
on/off
8Á Switches the A/C function on/off
(→page 121)
Switches there sidual heat on/off
(
→page 123)
9K Setsthe air flow ,ri ght
Aw Setsthete mp erature, right
BÃ Sets climate contro lto automatic, right
Operating the clima tecontro l system
Ac tivating/deactivating climate control
#To switch on: setthe air flow toleve l 1 or
higher using theK button.
#Toswitch off: setthe air flow toleve l 0 using
th eK button.
% If climate control is switched off, the win‐
do ws may mist up more quickl y.Switch off
climate control only brie fly.
Ac tivating/deactivating the A/C function via
the control panel
The A/C function heats, cools and dehumidifies
th eve hicle's interior air.
#Press theÁ button.
Deactivate the A/C function only briefly other‐
wise the windo wscan fog up more quickl y.
Condensation may drip from the underside of
th eve hicle when cooling mode is active. This is
not a sign that there is a malfunction.
Ac tivating/deactivating the A/C function
using the multimedia sy stem
Multimedia sy stem:
,Vehicle.b Climate Control.A/C
The A/C function heats, cools and dehumidifies
th eve hicle's interior air.
#Switch the function on Oor off ª.
Climate control 12
1

Starting theve hicle in emer gency operation
mode
If th eve hicle does not start and thePlace the
Key in the Marked Space See Operator's Manual
display message appears in the multifunction
displa y,yo u can start theve hicle in emer gency
operation mode.
#Make surethat mar ked space 2is em pty.
#Re mo veSmartK ey1 from theke yring.
#Place Smart Key1 in mar ked space 2.
The vehicle will start af ter a short time.
If yo ure mo veSmartK ey1 from mar ked
space 2the engine continues running. For
fur ther vehicle starts ho wever,SmartK ey1
must be located in mar ked space 2during
th e entire journe y.
#Have SmartK ey1 checked at a qualified
specialist workshop.
If th eve hicle does not star t:
#Lea veSmartK ey1 in mar ked space 2.
#Depress the brake pedal and start theve hicle
using thest art/ stop button.
% You can also switchon the po wer supp lyor
th e ignition with thest art/ stop button.
St arting theve hicle via Remo teOnline serv‐
ices
Cooling or heating theve hicle interior before
commencing your journey
% This function is not available in all countries.
If yo ustart theve hicle via your smartphone, the
pr ev iously selecte d air conditioning adjustment
is active. Ensure
thefo llowing before starting the engine:
RThe legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
RIt is safe tostart and runth e engine where
yo ur vehicle is par ked.
RThe fuel tank is suff icientlyfilled.
RThe star ter battery is suf ficiently charge d.
St arting the vehicle
&
WARNING Risk of crushing or entrap‐
ment due tounin tentional starting of the
engine
Limbs could be crushed or trapped if the
engine is star ted unintentionally during
service or maintenance work.
#Alw ays secure the engine against unin‐
te ntional starting before car rying out
maintenance or repair work.
Re quirements:RPark position jis selected.
RThe anti- theft alarm sy stem is not activated.
13 0
Driving and pa rking

Uniform Tire Quality Grading Standards: a
uniform standard tograde thequ ality of tires
with rega rd totread quality, tire traction and
te mp erature characteristics. The quality grading
assessment is made bythe manufacturer follow‐
ing specifications from theU. S. go vernment. The
qu ality grade of a tire is imprinted on the side
wa ll of the tire.
Re commended tire pressure :th ere commen‐
ded tire pressure is the tire pressure specified
fo rth e tires mounted totheve hicle at thefa c‐
to ry.
The tire and information table conta insthere c‐
ommended tire pressures for cold tires, the max‐
imum permissible load and the maximum per‐
missible vehicle speed.
The tire pressure table conta insthere commen‐
ded tire pressures for cold tires under various
operating conditions, i.e. loading and/or speed
of theve hicle.
Increased vehicle weight due tooptional
equipment: the combined weight of all standard
and optional equipment available forth eve hicle, re
ga rdless of whe ther it is actually ins talled on
th eve hicle or not.
Rim: the part of the wheel on which the tire is
ins talled.
GA WR (Gross Axle Weight Rating): the GAWR
is the maximum permissible axle load. The
actual load on an axle must ne verexc eed the
gros s axle weight rating. The gross axle
weight
ra ti

ng can be found on theve hicle identification
plate on the B‑pillar on the driver's side.
Speed rating: the speed rating is pa rtof the tire
identification. It specifies the speed range for
which a tire is appr oved.
GV W (Gross Vehicle Weight): the gross vehicle
we ight comprises thewe ight of theve hicle
including fuel, tools, the spare wheel, accesso‐
ri es ins talled, occupants, luggage and the trailer
dr aw bar nose weight, if applicable. The gross
ve hicle weight must not exceed the gross vehicle
we ight rating GVWR as specified on theve hicle
identification plate on the B‑pillar on the driver's
side.
GV WR (Gross Vehicle Weight Rating): the
GV WR is the maximum permitted gross weight of
the fully laden vehicle (weight of theve hicle
including all accessories, occupants, fuel, lug‐
ga ge and the trailer dr awbar nose weight if appli‐
cable). The grossve hicle weight rating is speci‐
fi ed on theve hicle identification plate on the
B‑pillar on the driver's side.
Maximum weight of the laden vehicle: the
maximum weight is the sum of the curb weight
of theve hicle, thewe ight of the accessories, the
maximum load and thewe ight of optional equip‐
ment ins talled at thefa ctor y.
Kilopascal (kPa): metricunit for tire pressure .
6.9 kPa cor responds to1 psi. Ano ther unit for
tire pressure is bar.10
0 ki
lopascal (kPa) equals
1 bar.
Load index: in additiontothe load-bearing
index, the load index may also be imprinted on
th e side wall of the tire. This specifies the load-
bearing capacity of the tire more precisel y.
Curb weight: thewe ight of a vehicle with stand‐
ard equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air
conditioning sy stem and optional equipment if
380
Wheels and tires

Displaymessages
Possible causes/consequences and MSolutions
Stop Vehicle Leave Engine
Running Wait Transmission
Cooling *T
he transmission has overheated. Pulling away can be temp orarily impaired or not possible.
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances.
#Lea veengine running.
#Wa it until the display message disappears before pulling away.
Auxiliary Battery Malfunc-
tion *T
he auxiliary batteryforth e transmission is no longer being charge d.
#Visit a qualified specialist workshop.
#Un tilthen, alw ays manually set the transmission toposition jbefore youswit choff the engine.
#Before leaving theve hicle, apply the electric parking brake.
Air Conditioning Malfunc-
tion See Operator's Manual *O
peration of the climate control sy stem is temp orarily restricted. Air flow and fresh air supply are set toautomatic
mode.
#Ha ve the climate control sy stem checked at a qualified specialist workshop.
438
Display messages and warning/indicator lamps

Let fresh air intotheve hicle interior.
Air Conditioning Malf. Visit Wo rk‐
shop ....................................................4 39
Lo we ring ............................................. 426
Malfunction Drive at Max. 50 mph...... 422
bMalfunction See Operator ’s
Manual ................................................ 444
Max. Speed 22 mph............................4 26
Mercedes me connect Services Limi‐
te d See Operator's Manual ..................415
N Pe rm anently Active Risk of Rolling
Aw ay ................................................... 436
ÂObta in a NewKey........................ 43 4
ëOf f.............................................. .425
Only Shift to'P' when Vehicle is Sta‐
tionary ................................................ .436
FPa rking Brake See Opera tor's
Manual ................................................. 411
ÂPlace theKe yin the Mar ked
Space See Opera tor's Manual ............. 435 hPlease Cor
rect Tire Pressure .......430
F Please Release Parking Brake .....4 10
PRE-SAFE Inoperative See Opera‐
to r's Manual ......................................... 415
Ra dar Sensors Dirty See Operator's
Manual ................................................ .416
ÂRe placeKeyBat tery .................... 434
Re versing Not Possible Ser
vice
R

e qu ired .............................................. 437
Service Required Do Not Shift Gears
Vi sit Dealer .......................................... 437
6SRS Malfunction Service
Re quired .............................................. 417
# Start Engine See Operator's
Manual ................................................ 428
ÐSt eering Malfunction Drive
Carefully Service Required .................. 439
ÐSt eering Malfunction Inc reased
Ph ysical Ef fort See Opera tor's Man‐
ual ....................................................... 440 ÐSt
eering Malfunction Stop
Immediately See Operator's Manual ...440
St op Vehicle Lea veEngine Running
Wa itTransmission Cooling .................. 438
#St opVehicle Lea veEngine Run‐
ning ..................................................... 429
#St opVehicle See Operator's
Manual ................................................ 428
ÉSt opVehicle Vehicle Too Low ...... 421
bSwitch Off Lights .........................444
bSwitch On Headlamps .................444
Ti re Press. Monitor Cur rently
Un available .......................................... 432
Ti re Press. Monitor Inoperative ........... 433
Ti re Pressure Monitor Inoperative No
Wheel Sensors ...............
..................... 433
To De

select P or N,Dep ress Brake
and Start Engine .................................. 436
To Engage Transmiss. Position R Fir st
Dep ress the Brake .............................. .442
472
Index

On-board computer................................. 209
Assis tance graphic menu ..................... 212
Displ aying the service due date ........... 327
Head-up Display menu ........................ .217
Media menu ......................................... 216
Menu designs ...................................... 218
Menu overview .................................... 209
Multifunction display ............................ 211
Na vigation sy stem menu ..................... .214
Operating ............................................ 209
Ra dio menu .......................................... 215
Service menu ....................................... 212
Te lephone menu .................................. 216
Tr ip menu ............................................ .213
On-board diagnostics inter face
see Diagno stics connection
Open-source software .............................. 32
Opening the trunk lid using your foot
HANDS-FREE ACCESS .......................... .68
Operating fluids
Ad ditives (fuel) .................................... 398
Brake fluid .......................................... .399
Coolant (engine) .................................. 400
Engine oil .......................................... .. 398Fu
el (gasoline) ..
..................................
.397
No tes .................................................. 396
Re frigerant (air conditioning sy stem) ... 401
Wi ndshield washer fluid ...................... 400
Ope rating saf ety
Declaration of conformity (wireless
ve hicle components) ............................. 25
Information ............................................ 24
Operating sy stem
see On-board computer
Operator's Manual Vehicle equipment ................................. 22
Operator's Manual (digital) ......................20
Outside mir rors ................................ 116, 117
Anti-gla remode (auto matic) ................. 117
Au tomatic mir rorfo lding function ........ 119
Fo lding in/out ...................................... 116
Pa rking position .................................. .118
Setting ................................................. 116
Using the memory function .................. .93
Overhead control panel Overview ................................................ 12
P
Pa int code ................................................ 394
Pa intwork (cleaning instructions) .........336
Pa nel heating
Setting ................................................... 89
Pa nic alarm ................................................ 58
Ac tivating/deactivating ......................... 58
Pa noramic roof
Operating thero ller sunblind ................ .76
Re setting thero ller sunblind .................. 77
Pa rcel net hooks ........................................ 98
Pa rental control
Setting ................................................ .248
Pa rk position
Selecting ............................................. 138
Selecting au tomatical ly....................... 138
Pa rking
see Electric parking brake
Pa rking aid
see Parking Assist PARKTRONI C
Pa rking Assist
Maneuvering assis tance ...................... 195
Index 483

Preve ntative occupant pr otection sys‐
te m
see PRE-SAFE
®(anticipatory occu‐
pant pr otection)
Pr ev ious destinations
Selecting ............................................ .259
Prog rams
see DYNA MIC SELECT
Pr otecting the environment
No tes ..................................................... 21
Q
QR code Rescue card .......................................... 28
Qualified specialist workshop .................. 27
R
Ra dar senso rs.......................................... 150
Ra dio
Ac tivating .............................................3 16
Ac tivating/deactivating radio text ....... 319
Callin g upthech annel list .................... 318
Del eting stations .................................. 318 Direct frequency entry .........................
318
Displ aying information ........................ .319
Displ aying radio text ............................ 319
Editing station presets ........................ .318
Menu (on-board computer) .................. 215
Moving stations .................................. .318
Overview ..............................................3 17
Searc hingforst ations .......................... 318
Setting a station .................................. 318
Setting the frequency band .................. 318
St oring radio stations .......................... 318
Switching HD Radio on/off .................. 318
Ta gging music trac ks........................... 319
Vo ice commands (Voice Cont rol Sys‐
te m) ..................................................... 228
Ra dio stations
Dialing (on-board computer) ................2 15
Ra nge
Displaying ............................................ 213
Re ading lamp
see Interior lig hting
Re alw

o od (care) ...................................... 339
Re ar climate control
Setting ................................................. 123 Re
ar fog light .......................................... .109
Re ar view camera ....................................1 85
Assigning as a favo rite (360° Cam‐
era) ...................................................... 190
Care .................................................... 338
Fu nction .............................................. 185
Opening the camera co ver (360°
Camera) ............................................... 190
Re ar window
Ro ller sunblind ...................................... .71
Re ar-view mir ror
see Outside mir rors
Re frigerant (air conditioning sy stem)
No tes ................................................... 401
Re frigerator box
Ins talling/ removing ............................. 105
Using ................................................... 103
Re fueling
Re fueling theve hicle ........................... 140
Re mo teOnline
Cooling or heating theve hicle inte‐
ri or .......................................................1 30
St arting theve hicle ............................. 130
Index 485