2016 MERCEDES-BENZ C-CLASS CABRIOLET engine coolant

Charge-air pressure (on-board
computer, Mercedes-Benz C 450
AMG 4MATIC)
.................................... .237
Child
Restraint system .............................. 60
Child seat
Forward-facing restraint system ...... 62
ISOFIX .............................................. 60
On the front-passenger sea t............ 61
Rearward-facing restraint system .... 62
Recommendations ........................... 65
Suitable positions ............................ 62
Children in the vehicle
Important safety notes .................... 59
Cigarette lighter ................................ 303
Cleaning
Mirror turn signal ........................... 319
Trailer tow hitch ............................. 320
Cleaning the folding draught
stop ............................................... 318
Climate control
Control panel for THERMATIC
automatic climate control (2-
zone) .............................................. 125
Controlling automaticall y............... 127
Cooling with air dehumidification .. 127
Cooling with air dehumidification
(multimedia system) ...................... 289
Demisting the windows .................. 129
Demisting the windscreen ............. 128
ECO start/stop function ................ 126
Indicator lamp ................................ 127
Ionisation ....................................... 130
Ionisation (multimedia system) ...... 288
Notes on using the automatic cli-
mate control .................................. 126
Overview ........................................ 288
Overview of systems ...................... 125
Problem with the rear window
heating .......................................... 129
Problems with cooling with air
dehumidification ............................ 127
Setting the air distribution ............. 128
Setting the air vents ...................... 130
Setting the airflow ......................... 128
Setting the climate mode (multi-
media system) ............................... 288
Setting the temperature ................ 128 Switching air-recirculation mode
on/of f............................................ 129
Switching on/of f........................... 126
Switching the rear window heat-
ing on/of f...................................... 129
Switching the synchronisation
function on and off ........................ 128
Synchronisation function (multi-
media system) ............................... 289
THERMATIC control panel (1-zone
automatic climate control) ............. 125
Climate control settings
Multimedia system ........................ 288
Cockpit
Overview .......................................... 33
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 233
Display message ............................ 248
Operation/note s.............................. 69
COMAND display
Cleaning ......................................... 321
Combination switch .......................... 116
Connecting a USB device
See also Digital Owner's Manua l... 284
Consumption statistics (on-board
computer) .......................................... 225
Controller ........................................... 285
Controlling speed
see DISTRONIC PLUS
Convenience opening feature ............ 95
Coolant (engine)
Checking the level ......................... 312
Display message ............................ 254
Important safety notes .................. 366
Temperature display in the instru-
ment cluster .................................. 221
Warning lamp ................................. 279
Cooling
see Climate control
Copyright ............................................. 32
Cornering light function
Display message ............................ 253
Function/note s............................. 117
Crosswind Assist ................................. 75
Cruise control
Cruise control lever ....................... 168 8
Index

HUD
see Head-up display I
Ignition lock see Key positions
Immobiliser .......................................... 78
Indicator and warning lamp
Restraint system ............................ 278
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS ............................................. .281
Coolant .......................................... 279
Engine diagnostics ......................... 278
SPORT handling mode ................... 277
Indicator lamps
Display message ............................ 253
see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 309
Instrument cluster
Overview .......................................... 35
Warning and indicator lamps ........... 35
Instrument cluster lighting .............. 220
Intelligent Light System
Activating/deactivating ................. 235
Display message ............................ 253
Overview ........................................ 117
Setting the dipped-beam head-
lamps for driving on the right/left .. 236
Interior lighting
Automatic control system .............. 119
Control .......................................... .119
Overview ........................................ 119
Reading lamp ................................. 119
Interior motion sensor
Deactivating ..................................... 79
Function .......................................... .79
iPod ®
See also Digital Owner's Manual .. .284
ISOFIX child seat securing system .... 60J
Jack Declaration of conformity ................ 29 Storage location ............................ 325
Using ............................................. 352
Jump starting (engine) ......................333 K
Key Changing the battery ....................... 84
Checking the battery ....................... 84
Display message ............................ 272
Door central locking/unlocking ....... 82
Emergency key element ................... 83
Important safety notes .................... 81
KEYLESS-GO start function .............. 83
Loss ................................................. 85
Modifying the programming ............. 83
Opening/closing soft top ................. 95
Overview .......................................... 81
Positions (ignition lock) ................. 133
Problem (malfunction) ..................... 85
Starting the engine ........................ 135
Key positions
Key ................................................ 133
Start/Stop button .......................... 133
KEYLESS-GO
Activating ......................................... 82
Deactivation ..................................... 82
Locking ............................................ 82
Removing the Start/Stop button ... 134
Start function ................................... 83
Unlocking ......................................... 82
Kickdown
Driving tips ................................... .148
Manual gearshifting ....................... 152
Kneebag ............................................... 49 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 207
Activating/deactivating (on-
board computer) ............................ 234
Display message ............................ 259
Function/informatio n.................... 206
see Active Lane Keeping Assist
Lane package ..................................... 20414
Index

Securing luggage
...............................2 99
Selector lever
see Automatic transmission
Sensors (cleaning instructions) ....... 319
Service
see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board com-
puter) ................................................. .232
Service message
see ASSYST PLUS
Service products
AdBlue ®
special additive s.............. 364
Brake fluid ..................................... 366
Coolant (engine) ............................ 366
Engine oil ....................................... 365
Fuel ................................................ 360
Important safety notes .................. 360
Washer fluid ................................... 367
Setting the date/time format
See also Digital Owner's Manua l... 284
Setting the language
See also Digital Owner's Manua l... 284
Setting the time
See also Digital Owner's Manua l... 284
Settings
Factory (on-board computer) ......... 237
On-board computer ....................... 232
SETUP (on-board computer) ............. 238
Shifting to neutral (manual trans-
mission) ............................................. 143
Side lamps
Switching on/of f........................... 115
Side windows
Important safety notes .................... 91
Opening/closing .............................. 91
Opening/closing all ......................... 92
Problem (malfunction) ..................... 93
Resetting ......................................... 93
Reversing feature ............................. 91
Sidebag ................................................ 49
SIM card
Inserting ........................................ 293
SMS
See also Digital Owner's Manua l... 284
Snow chains ...................................... 345 Socket (12 V)
Centre console .............................. 304
General notes ................................ 303
Rear compartment ......................... 304
Soft top
AIRCAP ............................................ 96
Cleaning ......................................... 317
Display message ............................ 271
Draught stop .................................... 97
Important safety notes .................... 94
Opening/closing (with key) .............. 95
Opening/closing (with soft-top
switch) ............................................. 95
Problem (malfunction) ..................... 99
Re-locking ........................................ 96
Soft-top switch .................................... 95
Sound
Switching on/of f........................... 285
Specialist workshop ............................ 30
Spectacles compartment ................. 297
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 236
Digital ............................................ 225
In the Instrument cluster ................. 35
Segments ...................................... 220
Selecting a display uni t.................. 236
SPEEDTRONIC
Deactivating variable ..................... 171
Display message ............................ 262
Function/note s............................. 169
General notes ................................ 169
Important safety notes .................. 169
LIM indicator lamp ......................... 170
Permanent ..................................... 171
Selecting ........................................ 170
Setting the speed .......................... 170
Storing the current speed .............. 170
Storing the current speed or call-
ing up the last stored speed .......... 170
Switching to passive ...................... 171
Variabl e......................................... 170
SPORT handling mode
Activating/deactivating
(Mercedes-Benz C 450 AMG
4MATIC) ........................................... 74
Deactivating/activating
(Mercedes-AMG vehicles) ................ 74 20
Index

Connecting the module via a USB
cabl e ............................................. .292
Data modem mode ........................ 294
Installing the module ..................... 292
Introduction ................................... 292
Saving/deleting the PIN for the
SIM card ........................................ 294
Settings ......................................... 294
SIM card mode .............................. 293
Text messages ............................... 294
Transferring the phone book .......... 294
Temperature
Coolant (display in the instrumentcluster) .......................................... 221
Engine oil (on-board computer,
Mercedes-AMG vehicles) .............. .237
of engine oil (on-board computer,
Mercedes-Benz C 450 AMG
4MATIC) ......................................... 237
of transmission oil (on-board com-
puter, Mercedes-Benz C 450 AMG
4MATIC) ......................................... 237
Outside temperature ..................... .221
Setting (climate control) ................ 128
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 237
TEMPOMAT
Function/notes ............................ .167
Text messages
Telephone module with Blue-
tooth ®
(SAP profile) ....................... 294
Through-loading feature ................... 298
Timing (RACETIMER) ......................... 239
TIREFIT Kit
Declaration of conformity ................ 30
Important safety notes .................. 327
Storage location ............................ 325
Tyre pressure not reached ............. 329
Tyre pressure reached ................... 329
Using ............................................. 328
Total distance recorder .................... 224
Touchpad
Changing the station/music
track .............................................. 287
Character suggestions ................... 286
Deleting characters ....................... 286
Entering a space ............................ 286 Entering characters ....................... 286
Gesture control .............................. 286
Handwriting recognition ................ 286
Operating the touchpad ................. 286
Overview ........................................ 285
Quick access for audio .................. 287
Switching ....................................... 285
Switching input line ....................... 286
Tow-away protection
Deactivating ..................................... 79
Function .......................................... .79
Priming/deactivating ....................... 79
Tow-starting
Emergency engine starting ............ 339
Important safety notes .................. 336
Towing
Important safety notes .................. 336
Notes for 4MATIC vehicles ............ 339
Transporting the vehicle ................3 38
With the rear axle raised ................ 337
Towing a trailer
Active Blind Spot Assist ................. 210
Active Lane Keeping Assist ............ 213
Active Parking Assist ..................... 188
Axle load, permissible .................... 369
ESP ®
(Electronic Stability Pro-
gram) ............................................... 75
Failure check for LEDs ................... 216
Pulling away with a trailer .............. 136
Trailer tow hitch display message .. 270
Towing away
Fitting the towing eye .................... 337
Removing the towing eye ............... 337
With both axles on the ground ....... 338
Towing eye ......................................... 325
Traffic Sign Assist
Activating/deactivating the warn-ing function .................................... 233
Display message ............................ 261
Function/note s............................. 202
Important safety notes .................. 203
Instrument cluster display ............. 203
Trailer
Folding the ball coupling in/out ..... 214
Trailer coupling
see Towing a trailer
Trailer towing
7-pin connecto r............................. 217 22
Index

Instrument cluster
i
Instrument cluster with speedometer
(km/h) Function Page
:
Speedometer with segments 220
Indicator and warning lamps:
å
ESP®
OFF 275
÷
ESP® 275
·
Distance warning 281
Ð
Power steering assis-
tance malfunctioning 283
6
Restraint system 43
ü
Seat belt not fastened 273
K
Main-beam headlamps 116
L
Dipped-beam head-
lamps 115
T
Side lamps 115
R
Rear foglamp 115
h
Tyre pressure monitor 282
;
#!
Turn signals 116
=
Multifunction display 222
?
Rev counter 221 Function Page
Indicator and warning lamps:
!
Electric parking brake
(yellow) 278
!
ABS malfunctioning 275
;
Engine diagnostics 278
%
Diesel engine: preglow 135
!
Electric parking brake
applied (red) 278
J
Brakes (red) 274
M
SPORT handling mode
(Mercedes-AMG vehicles) 277
J
Brakes (yellow) 274
A
Coolant temperature gauge 221
Indicator and warning lamps:
?
Coolant too hot/cold 279
B
Fuel gauge display
Indicator and warning lamps:
8
Fuel reserve with fuel
filler flap location indicator
(right-hand side) 278
i
Information on displaying the outside tem-
perature on the multifunction display can be found under "Outside temperature display"
(Y
page 221). Instrument cluster
35At a glance

Problem
Possible causes/consequences and
M
MSolutions The starter motor was exposed to excessively high thermal load.
X Start the engine again (Y page 134).
If the engine still does not start: X Consult a qualified specialist workshop. Vehicles with a petrol
engine:
The engine is not running
smoothly and is misfir-
ing. The engine electronics or a mechanical component of the engine
management system are/is malfunctioning.
X Depress the accelerator pedal only slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X Have the cause rectified immediately at a qualified specialist work-
shop. The coolant temperature
display is showing more
than 120 †. A display
message may also
appear on the multifunc-
tion display and a warn-
ing tone may sound. The coolant level is too low. The coolant is too hot and the engine is not
being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 312). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the engine radiator fan may be faulty. The
coolant is too hot and the engine is not being cooled sufficiently.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. DYNAMIC SELECT switch
Mercedes-AMG vehicles
General information Use the DYNAMIC SELECT switch to select the
drive program.
Available drive programs:
RACE
(S‑MODEL)
Driving characteristics suit-
able for a race circuit
S+
Sport Plus Particularly sporty driving
characteristics
S
Sport Sporty driving characteris-
tics
C
Comfort Comfortable and economi-
cal driving characteristics
I
Individual Individual settings Depending on the drive program selected, the
following vehicle characteristics will change:
R the engine management
R the transmission management
R the suspension
R the position of the exhaust flap
R the steering
R the availability of the ECO start/stop function
R climate control
R the driver assistance systems
R the availability of gliding mode
Further information for automatic drive program
characteristics (Y page 148).
Additionally, in drive program Iyou can config-
ure the respective vehicle characteristics via the
multimedia system. You can find information
about this in the Digital Owner's Manual.
If the ignition is switched off for less than four
hours, the previously selected drive program is DYNAMIC SELECT switch
141Driving and parking Z

The segments between the speed of the vehi-
cle in front and the stored speed light up. Rev counter
! Do not drive in the overrevving range. Doing
so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the measured air temperature
and not the road surface temperature.
The outside temperature display is in the multi-
function display (Y page 222).
Changes in the outside temperature are dis-
played after a short delay. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature display is shown in the lower section of the rev counter (Y page 35).
At high outside temperatures and when driving
in mountainous terrain, the coolant temperature
may rise to the end of the scale.
Under normal operating conditions and with the specified coolant level, the display may rise to
120 †. Operating the on-board computer
:
Multifunction display
; Right control panel
= Left control panel
X To activate the on-board computer: switch
on the power supply.
Vehicles with manual transmission: if you
remove the key, then quickly re-insert it and turn
it to position 1, the instrument cluster and, as a
result, the on-board computer as well are not
activated.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel.
Left control panel ò R
Opens the menu list 9
: Press briefly:
R Scrolls through lists
R Selects a menu or function
R In the Radio Radio orMedia
Media menu:
opens the track or station list and
selects a station, an audio track or a video scene
R In the Telephone Telephone menu: switches
to the phone book and selects a
name or a telephone number Displays and operation
221On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions b
Switch on headlamps Switch on headlamps You are driving without dipped-beam headlamps.
X
Turn the light switch to the Lorà position. Adaptive Highbeam Adaptive Highbeam
Assist Plus cur‐ Assist Plus cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Adaptive Highbeam Assist Plus is deactivated and temporarily inop-
erative. Possible causes:
R The windscreen is dirty in the camera's field of vision.
R Visibility is impaired due to heavy rain, snow or fog.
X Clean the windscreen.
If the system detects that the camera is fully operational again, the
Adaptive Highbeam Assist Plus available again
Adaptive Highbeam Assist Plus available again message is
displayed.
Adaptive Highbeam Assist Plus is operational again. Adaptive Highbeam Adaptive Highbeam
Assist Plus inoper‐ Assist Plus inoper‐
ative ative Adaptive Highbeam Assist Plus is faulty.
X Consult a qualified specialist workshop. Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top up coolant See Top up coolant See
Owner’s Manual Owner’s Manual The coolant level is too low.
! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Top up the coolant, observing the warning notes when doing so
(Y page 312).
If you have to top up the coolant frequently: X Contact a qualified specialist workshop and have the engine cooling
system checked. ? The fan motor is faulty.
X If the coolant temperature is below 120 †, drive on to the nearest
qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. 254
Display
messagesOn-board computer and displays