2018 MERCEDES-BENZ C-CLASS CABRIOLET service

Index....................................................... 4
Digital Operator's Manual..................26
Introduction .......................................... .26
Operation ............................................... 26
Introduction ......................................... 27
Protecting the environment ...................2 7
Genuine Mercedes-Benz parts .............. .27
Operator's Manual ................................. 28
Service and vehicle operation ................2 8
Operating safety .................................... 30
QR codes for the rescue card ................3 2
Data stored in the vehicle ...................... 32
Information on copyright ....................... 34
At a glance ........................................... 35
Cockpit .................................................. 35
Instrument cluster ................................. 36
Multifunction steering wheel ................. 37
Center console ...................................... 38
Overhead control panel .........................4 1
Door control panel ................................. 42
Safety ................................................... 43
Panic alarm ............................................ 43
Occupant safety .................................... 43
Children in the vehicle ........................... 59
Pets in the vehicle ................................. 64
Driving safety systems ........................... 64
Protection against theft .........................7 4
Opening and closing...........................76
SmartKey ............................................... 76
Doors ..................................................... 81
Trunk ..................................................... 83
Side windows ......................................... 85
Soft top ................................................ .88
Seats, steering wheel and mirrors ....94
Correct driver's seat position ................9 4
Seats ..................................................... 94
Steering wheel ..................................... 100
Mirrors ................................................. 103 Memory function ................................. 105
Lights and windshield wipers
..........107
Exterior lighting ................................... 107
Interior lighting .................................... 110
Replacing bulbs ................................... 111
Windshield wipers ................................ 111
Climate control ................................. 115
Overview of climate control systems ... 115
Operating the climate control sys-
tems .................................................... 116
Air vents .............................................. 120
Driving and parking ..........................122
Notes on breaking-in a new vehicle ..... 122
Driving ................................................. 122
DYNAMIC SELECT switch .................... 130
Automatic transmission ....................... 132
Refueling ............................................. 141
Parking ................................................ 143
Driving tips .......................................... 146
Driving systems ................................... 151
On-board computer and displays ....192
Important safety notes ........................ 192
Displays and operation ........................ 192
Menus and submenus ......................... 196
Display messages ................................ 211
Warning and indicator lamps in the
instrument cluster ............................... 241
Multimedia system ...........................253
General notes ...................................... 253
Important safety notes ........................ 253
Function restrictions ............................ 253
Operating system ................................ 254
Stowage and features ......................263
Stowage areas ..................................... 263
Features .............................................. 267
Maintenance and care ......................281
Engine compartment ........................... 281
2Contents

ASSYST PLUS ...................................... 285
Care ..................................................... 286
Breakdown assistance.....................295
Where will I find...? .............................. 295
Flat tire ................................................ 296
Battery (vehicle) .................................. 301
Jump-starting ....................................... 304
Towing and tow-starting ...................... 306
Fuses ................................................... 309
Wheels and tires ............................... 312
Important safety notes ........................ 312
Operation ............................................ 312
Winter operation .................................. 314
Tire pressure ....................................... 315
Loading the vehicle .............................. 322
All about wheels and tires ...................3 25
Changing a wheel ................................ 331
Wheel/tire combination ......................3 36
Technical data................................... 338
Information regarding technical data ... 338
Vehicle electronics .............................. 338
Identification plates .............................3 39
Service products and filling capaci-
ties ...................................................... 340
Vehicle data ......................................... 345
Contents3

1, 2, 3 ...
4ETS (Electronic Traction System)see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 166
12 V socket
see Socket (12 V)
360° camera
Cleaning .........................................2 92
Display in the multimedia system .. 178
Function/notes .............................1 76
A
ABS (Anti-lock Braking System)
Display message ............................ 213
Function/notes ................................ 64
Warning lamp ................................. 244
Acceleration
see Kickdown
Accident
Automatic measures after an acci-
dent ................................................. 59
Accident warning
see Driving safety system
Activating media mode
General notes ................................ 261
Activating/deactivating cooling
with air dehumidification ................. 117
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 230
Function/notes .............................1 86
Active Brake Assist
Activating or deactivating .............. 204
Display message ............................ 218
Function/notes ................................ 65
Active Brake Assist with cross-
traffic function
Activating or deactivating .............. 205
Display message ............................ 219
Function/notes ................................ 71
Important safety notes .................... 72
Warning lamp ................................. 250 Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 229
Function/information .................... 189
Active light function
Display message ............................ 224
Active Service System PLUS
see ASSYST PLUS
ADAPTIVE BRAKE ................................. 71
Adaptive Brake Assist
Function/notes ................................ 67
Adaptive Damping System
Function/notes ............................. 165
Adaptive Damping System with
continuous damping adjustment
(ADS PLUS) ........................................ 164
Adaptive Highbeam Assist
Display message ............................ 224
Function/notes ............................. 109
Switching on/off ........................... 110
Additional speedometer ................... 207
Additives (engine oil) ........................ 343
Address book
see also Digital Operator's Man-
ual .................................................. 253
A

djusting the volume
Multimedia system ........................ 254
After-sales service center
see ASSYST PLUS
Air bags
Deployment ..................................... 56
Display message ............................ 222
Front air bag (driver, front
passenger) ....................................... 50
Head bag ......................................... 51
Important safety notes .................... 49
Introduction ..................................... 48
Knee bag .......................................... 50
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 44
Side impact air bag .......................... 50
Air vents
Important safety notes .................. 120
Rear ............................................... 120
Setting ........................................... 120
4Index

Setting the blower output of the
AIRSCARF vents ............................. 121
Setting the center air vents ........... 120
Setting the side air vents ............... 120
Switching AIRSCARF on/off .......... 100
Air-conditioning system
see Climate control
Airbag
Warning lamp ................................. 247
AIRCAP
Cleaning instructions ..................... 289
Extending/retracting ....................... 91
Important safety notes .................... 91
AIRMATIC
Display message ............................ 228
Function/notes ............................. 163
Setting the normal vehicle level ..... 164
Setting the raised vehicle level ...... 164
AIRSCARF
Switching on/off ........................... 100
AIRSCARF vents
Setting the blower output .............. 121
Alarm
ATA (Anti-Theft Alarm system) ......... 74
Switching off (ATA) .......................... 74
Switching the function on/off
(ATA) ................................................ 74
Alarm system
see ATA (Anti-Theft Alarm system)
All-wheel drive
see 4MATIC (permanent four-
wheel drive)
AMG
Adaptive sport suspension sys-
tem ................................................ 165
Performance Seat ............................ 98
Switchable performance exhaust
system ........................................... 129
AMG menu (on-board computer) ..... 208
Animals
see Pets in the vehicle
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-skid chains
see Snow chains
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system) AppCode
see QR code
Armrest
Stowage compartment .................. 264
Ashtray ............................................... 269
Assistance display (on-board com-
puter) .................................................. 203
Assistance menu (on-board com-
puter) .................................................. 204
Assistance system
see Driving systems
ASSYST PLUS
Displaying a service message ........ 285
Driving abroad ............................... 286
Hiding a service message .............. 285
Rese
tting the service interval dis-
play ................................................ 286
Service message ............................ 285
Special service requirements ......... 286
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 74
Function ........................................... 74
Switching off the alarm .................... 74
ATTENTION ASSIST
Activating/deactivating ................. 205
Display message ............................ 228
Displaying level .............................. 181
Function/notes ............................. 180
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 224
see Lights
Automatic car wash (care) ............... 286
Automatic engine start (ECO start/
stop function) .................................... 128
Automatic engine switch-off (ECO
start/stop function) .......................... 127
Automatic headlamp mode .............. 107
Automatic transmission
Accelerator pedal position ............. 135
Changing gear ............................... 135
DIRECT SELECT lever ..................... 133
Display message ............................ 236
Double-clutch function .................. 135
Index5

Data
see Technica ldat a
Dat acarrier
Selecting ........................................ 20 1
Daytime runnin glam pmode
see Daytime running lamp s
Daytime runnin glamps
Displa ymessage ............................ 22 4
Function/notes ............................ .107
Switching on/off (on-board com-
puter) ............................................. 207
Diagnostics connection ......................31
Digital Operator's Manua l
Help ................................................ .26
Introduction .....................................2 6
Digital speedometer .........................197
DIRECT SELECT lever
Automatic transmission ................. 133
Display
see Display messages
see Warning and indicator lamps
Display messages
ASSYST PLUS ................................ 285
Calling up (on-board computer) ..... 212
Driving systems .............................2 28
Engine ............................................ 225
General notes ................................ 211
Hiding (on-board computer) ........... 211
Introduction ................................... 211
Lights ............................................. 224
Safety systems .............................. 213
SmartKey ....................................... 240
Tires ............................................... 234
Vehicle ...........................................2 36
Distance control
see Driving system
Distance Pilot DISTRONIC
Activating ....................................... 155
Activation conditions ..................... 155
Cruise control lever ....................... 155
Display Message .............. .............. 231
Di

splays in the instrument cluster .. 157
Driving tips ....................................1 59
Driving with Distance Pilot
DISTRONIC ....................................1 56
Function/notes .............................1 53
Important safety notes .................. 154
Setting a speed .............................. 157 Setting the specified minimum
distance ......................................... 157
Stopping ........................................ 156
Switching off .................................. 158
with Steering Pilot ......................... 159
Distance recorder .............................1 96
Distance warning (warning lamp) .... 250
Distance warning function
Function/notes ................................ 66
Distance warning system
see Active Brake Assist
Doors
Automatic locking (switch) ...............8 2
Central locking/unlocking
(SmartKey) ...................................... .76
Control panel .................................. .42
Display message ............................ 238
Emergency locking ........................... 83
Emergency unlocking ....................... 83
Important safety notes .................... 81
Opening (from inside) ...................... 81
Drinking and driving ......................... 147
Drive program
Automatic transmission ................. 136
SETUP (on-board computer,
Mercedes-AMG vehicles) ............... 209
Drive programs
Display (DIRECT SELECT lever) ...... 134
DYNAMIC SELECT switch .............. 130
Driver's door
see Doors
Driver's seat
see Seat
Driving abroad
Mercedes-Benz Service ................. 286
Driving Assistance PLUS package ... 186
Driving on flooded roads .................. 150
Driving safety system
Active Brake Assist .......................... 65
Crosswind Assist ............................. 71
Drivin g safety systems
ABS (Anti-lock Braking System) ....... 64
Active Brake Assist with cross-
traffic function ................................. 71
ADAPTIVE BRAKE ............................. 71
Adaptive Brake Assist ...................... 67
BAS (Brake Assist System) .............. 65
Index9

Emergency releaseDriver's door .................................... 83
Trunk .............................................. .85
Vehicle .............................................8 3
Emergency Tensioning Devices
Activation ........................................ .56
Emissions control
Service and warranty information .... 28
Engine
Check Engine warning lamp .......... .247
Display message ............................ 225
ECO start/stop function ................ 127
Engine number ............................... 340
Irregular running ............................ 129
Jump-starting ................................. 304
Starting (important safety notes) ... 125
Starting problems .......................... 129
Starting the engine with the
SmartKey ....................................... 125
Starting via smartphone ................ 126
Starting with the Start/Stop but-
ton ................................................. 125
Switching off .................................. 144
Tow-starting (vehicle) ..................... 309
Engine electronics
Problem (malfunction) ................... 129
Engine jump starting
see Jump starting (engine)
Engine oil
Adding ...........................................2 83
Additives ........................................ 343
Checking the oil level ..................... 282
Checking the oil level using the
dipstick .......................................... 283
Display message ............................ 227
Filling capacity ............................... 343
General notes ................................ 342
Notes about oil grades ................... 342
Notes on oil level/consumption .... 282
Temperature (on-board computer,
Mercedes-AMG vehicles) ...............2 08
Engine oil additives
see Additives (engine oil)
Entering an address
see also Digital Operator's Ma

n-
ual ..................................................2 53
ESC (Electronic Stability Control)
see ESP
®(Electronic Stability Program) ESP
®(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 209
Characteristics ................................. 68
Crosswind Assist .............................7 1
Deactivating/activating (button
in Mercedes-AMG vehicles) .............6 9
Deactivating/activating (notes,
except Mercedes-AMG vehicles) ...... 68
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) ............... 204
Display message ............................ 213
Function/notes ................................ 67
General notes .................................. 67
Important safety information ........... 68
Trailer stabilization ........................... 70
Warning lamp ................................. 244
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 68
Exhaust
see Exhaust pipe
Exhaust check ................................... 147
Exhaust pipe
Cleaning ......................................... 292
Exterior lighting
Cleaning ......................................... 291
Setting options .............................. 107
see Lights
Exterior mirrors
Adjusting ....................................... 103
Dipping (automatic) ....................... 104
Folding in/out (automatically) ....... 104
Folding in/out (electrically) ........... 103
Out of position (troubleshooting) ... 104
Setting ........................................... 103
Storing settings (memory func-
tion) ............................................... 106
Storing the parking position .......... 104
Eyeglasses compartment ................. 264
F
Favorites
Overview ........................................ 256
Features ............................................. 267
Filler cap
see Refueling
Index11

Introduction to the restraint sys-
tem .................................................. 43
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 44
Pets in the vehicle ........................... 64
PRE-SAFE
®(anticipatory occu-
pant protection) ............................... 58
PRE-SAFE
®PLUS (anticipatory
occupant protection PLUS) .............. 58
Restraint system warning lamp ........ 44
Seat belt .......................................... 44
OCS
Conditions ....................................... 51
Faults ............................................... 55
Operation .........................................5 2
System self-test ............................... 54
Odometer ........................................... 196
Oil
see Engine oil
On-board computer
AMG menu ..................................... 208
Assistance graphic menu ............... 203
Assistance menu ........................... 204
Display messages .......................... 211
Displaying a service message ........ 285
Displays and operation .................. 192
Distance Pilot DISTRONIC ............. 158
Factory settings ............................. 207
G-Meter ......................................... 208
Head-up display ............................. 195
Important safety notes .................. 192
Instrument cluster menu ............... 207
Lights menu ................................... 207
Media menu ................................... 200
Menu overview .............................. 196
Message memory .......................... 212
Navigation menu ............................ 198
RACETIMER ................................... 210
Radio menu ................................... 200
Service menu ................................. 203
Settings menu ............................... 203
Standard display ............................ 196
Telephone menu ............................ 202
Trip menu ...................................... 196
Video DVD operation ..................... 201 On-board diagnostic interface
see Diagnostics connection
Operating safety
Declaration of conformity ................ 30
Important safety notes .................... 30
Operating system
see On-board computer
Operatio n
Di

gital Operator's Manual ................ 26
Operator's Manual
Overview .......................................... 28
Vehicle equipment ........................... 28
Outside temperature display ........... 193
Overhead control panel ...................... 41
P
Paddle shifters
see Steering wheel paddle shifters
Paint code number ............................ 339
Paintwork (cleaning instructions) ... 288
Panic alarm .......................................... 43
Parcel net ........................................... 267
Parking
Important safety notes .................. 143
Parking brake ................................ 145
Parking position for the exterior
mirror on the front-passenger
side ................................................ 104
Rear view camera .......................... 173
Switching off the engine ................ 144
see Parking Assist PARKTRONIC
Parking aid
see 360° camera
see Exterior mirrors
see Parking Assist PARKTRONIC
see Parking Pilot
see Rear view camera
Parking Assist
Display message ............................ 230
Parking Assist PARKTRONIC
Deactivating/activating ................. 172
Driving system ............................... 170
Function/notes ............................. 170
Important safety notes .................. 170
Problems (malfunctions) ................ 172
Sensor range ................................. 170
Warning display ............................. 171
16Index

Adjusting the 4-way lumbar sup-
port .................................................. 98
Adjusting the head restraint ............ 96
Calling up a stored setting (mem-
ory function) .................................. 106
Cleaning the cover ......................... 294
Folding the backrest (rear com-
partment) forwards/back .............. 265
Folding the backrests forward/
back ................................................. 97
Important safety notes .................... 94
Seat backrest display message ..... 238
Seat heating .................................... 99
Seat heating problem .................... 100
Seat ventilation ................................ 99
Seat ventilation problem ................ 100
Storing settings (memory func-
tion) ............................................... 106
Switching AIRSCARF on/off .......... 100
Securing a load
see Securing cargo
Securing cargo .................................. 266
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 293
see Automatic transmission
Sensors (cleaning instructions) ....... 292
Service center
see Qualified specialist workshop
Service Center
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 203
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 343
Coolant (engine) ............................ 343
Engine oil ....................................... 342
Fuel ................................................ 340
Important safety notes .................. 340
Refrigerant (air-conditioning sys-
tem) ............................................... 344
Washer fluid ................................... 344
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 253 Setting the language
see also Digital Operator's Man-
ual .................................................. 253
Setting the time
see also Digital Operator's Man-
ual .................................................. 253
Se

ttings
Factory (on-board computer) ......... 207
On-board computer ....................... 203
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 209
Side impact air bag ............................. 50
Side marker lamp (display mes-
sage) ................................................... 224
Side windows
Cleaning ......................................... 291
Important safety information ........... 85
Opening/closing .............................. 86
Opening/closing (all) ....................... 86
Problem (malfunction) ..................... 87
Resetting ......................................... 87
Reversing feature ............................. 85
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 253
SmartKey
Changing the battery ....................... 79
Changing the programming ............. 78
Checking the battery ....................... 79
Display message ............................ 240
Door central locking/unlocking ....... 76
Important safety notes .................... 76
KEYLESS-GO start function .............. 77
Loss ................................................. 80
Mechanical key ................................ 78
Opening/closing soft top ................. 90
Overview .......................................... 76
Positions (ignition lock) ................. 123
Problem (malfunction) ..................... 80
Starting the engine ........................ 125
Smartphone
Starting the engine ........................ 126
SMS
see also Digital Operator's Man-
ual .................................................. 253
Snow chains ...................................... 315
Socket (12 V)
Center console .............................. 270
Index19