MERCEDES-BENZ C-CLASS CABRIOLET 2016 Owners Manual

Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
M Solutions !
N
The red indicator lamp for the electric parking brake flashes or is lit and/or the
yellow warning lamp for the electric parking brake is lit.
X Observe the additional display messages on the multifunction display. 6
N
The red restraint system warning lamp is lit while the engine is running.
The restraint system is malfunctioning.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in the
event of an accident, may not be triggered.
This poses an increased risk of injury.
X Observe the additional display messages on the multifunction display.
X Drive on carefully.
X Contact a qualified specialist workshop immediately and have the restraint sys-
tem checked.
Further information about the restraint system (Y page 42).Engine
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
M Solutions ;
N
The yellow engine diagnostics warning lamp lights up while the engine is run-
ning.
A fault may exist with the following, for example:
R Engine management
R Fuel injection system
R Exhaust system
R Ignition system (for vehicles with petrol engines)
R Fuel system
The emission limit values may be exceeded and the engine may be running in
emergency mode.
X Consult a qualified specialist workshop immediately.
Vehicles with a diesel engine: the fuel tank has run dry (Y page 156).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emergency running
mode is cancelled. The vehicle does not have to be checked. 8
N
The yellow reserve fuel warning lamp is on while the engine is running.
The fuel level has dropped into the reserve range.
X Refuel at the nearest filling station. 278
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ?
N
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gauge is malfunctioning.
The coolant temperature is no longer being monitored. The engine could be dam-
aged if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine. Do not continue driving.
X Secure the vehicle against rolling away (Y page 159).
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
279On-board computer and displays Z

Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
M Solutions ?
N
The red coolant warning lamp comes on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may be blocked or the electric engine radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooled sufficiently.
X Observe the additional display messages on the multifunction display.
X Stop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine.
X Secure the vehicle against rolling away (Y page 159).
X Leave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
X Check the coolant level and top up the coolant, making sure to observe the
warning notes (Y page 312).
X If you have to top up the coolant frequently, have the engine cooling system
checked.
X Make sure that the air supply to the engine radiator is not blocked, e.g. by frozen
slush.
X Do not start the engine again until the coolant temperature is below 120 †. The
engine may otherwise be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-start traffic. ?
N
The red coolant warning lamp comes on while the engine is running. A warning
tone also sounds.
The coolant temperature has exceeded 120 †. The airflow to the engine radiator
may be blocked or the coolant level may be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Never drive with an overheated engine. Driving when your engine is overheated
can cause any fluids that may have leaked into the engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious burns, which can
occur just by opening the bonnet.
There is a risk of injury.
X Observe the additional display messages on the multifunction display.
X Stop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine.
X Secure the vehicle against rolling away (Y page 159).
X Leave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
X Check the coolant level and top up the coolant, making sure to observe the
warning notes (Y page 312).
X If you have to top up the coolant frequently, have the engine cooling system
checked. 280
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions X
Make sure that the air supply to the engine radiator is not blocked, e.g. by frozen
slush.
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 mountainous terrain
and stop-start traffic. Driving systems
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ·
N
The red distance warning lamp lights up while the vehicle is in motion.
The distance to the vehicle in front is too small for the speed selected.
X Increase the distance. ·
N
The red distance warning lamp lights up while the vehicle is in motion. A warning
tone also sounds.
You are approaching a vehicle, a pedestrian or a stationary obstacle in your line of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to brake or take
evasive action.
Further information on PRE ‑SAFE®
Brake (Y page 76).
Further information on the distance warning function of COLLISION PREVENTION ASSIST PLUS (Y page 69). Warning and indicator lamps in the instrument cluster
281On-board computer and displays Z

Tyres
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions h
N
The yellow tyre pressure monitor warning lamp (pressure loss/malfunction) is
lit.
The tyre pressure monitor has detected a loss of pressure in at least one of the
tyres.
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed increase
R the tyres may wear excessively and/or unevenly, which may greatly impair tyre
traction
R the driving characteristics, as well as steering and braking, may be greatly
impaired
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking manoeuvres.
Pay attention to the traffic conditions as you do so.
X Safeguard the vehicle against rolling away (Y page 159).
X Observe the additional display messages in the multifunction display.
X Check the tyres and, if necessary, follow the instructions for a flat tyre
(Y page 326).
X Check the tyre pressure (Y page 348).
X If necessary, correct the tyre pressure. h
N
The yellow tyre pressure monitor warning lamp (pressure loss/malfunction)
flashes for approximately one minute and then remains lit.
The tyre pressure monitor is faulty.
G WARNING
The system is possibly unable to detect or register low tyre pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction display.
X Consult a qualified specialist workshop immediately. 282
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Vehicle
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions Ð
N
The red power steering warning lamp is lit while the engine is running.
The power steering assistance is faulty.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
If you are able to steer safely:
X Drive on carefully.
X Consult a qualified specialist workshop immediately.
If you are unable to steer safely:
X Do not drive on.
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
283On-board computer and displays Z

General notes
The section on the multimedia system in this
manual describes the basic principles for oper-
ation. More information can be found in the Dig-
ital Owner's Manual. Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the multimedia system.
The multimedia system calculates the route to
the destination without taking the following into
account, for example:
R traffic lights
R stop and give way signs
R parking or stopping restrictions
R road narrowing
R other road and traffic rules and regulations
The multimedia system may give incorrect driv-
ing recommendations if the actual road/traffic
situation does not correspond with the digital
map data.
For example:
R a diverted route
R the road layout or the direction of a one-way
street has been changed
For this reason, you must always observe road
and traffic rules and regulations during your
journey. Road and traffic rules and regulations
always have priority over multimedia system
driving recommendations. G
WARNING
Modifications to electronic components, their software as well as wiring could affect their
function and/or the operation of other net-
worked components. This could in particular
also be the case for systems relevant to
safety. They might not function properly any-
more and/or jeopardise the operational
safety of the vehicle. There is an increased
risk of an accident and injury.
Do not attempt to modify the wiring as well as
electronic components or their software.
Always have work on electrical and electronic components carried out at a qualified special-
ist workshop.
If you make any changes to the vehicle elec-
tronics, the general operating permit is ren-
dered invalid. Function restrictions
For safety reasons, some functions are restric-
ted or unavailable while the vehicle is in motion.
You will notice this, for example, because either you will not be able to select certain menu items
or a message will appear to this effect. Operating system
Overview
General notes Wearing polarised sunglasses may impair your
ability to read the display.
The display has an automatic temperature-con-
trolled switch-off feature. The brightness is
automatically reduced if the temperature is too
high. If necessary, the display may temporarily
switch off completely.
Cleaning instructions !
Do not touch the display. The display has a
very sensitive high-gloss surface; there is a
risk of scratching. If you have to clean the
screen, however, use a mild cleaning agent
and a soft, lint-free cloth. 284
Operating systemMultimedia system

The display must be switched off and have
cooled down before you start cleaning. Do not
apply pressure to the display surface when
cleaning it, as this could cause irreversible dam- age to the display.
Switching the multimedia system
on/off X
Press the Übutton on the centre console
to the right of the controller.
X For Mercedes-AMG vehicles with a switch-
able AMG Performance exhaust system:
press the thumbwheel which is to the right of
the controller.
Adjusting the volume X
Turn the thumbwheel on the right of the con-
troller.
The volume changes:
R for the currently set media source
R during a traffic announcement or navigation
message
R in hands-free mode during an active call
Switching the sound on/off This function is only available on the multifunc-
tion steering wheel for Mercedes-AMG vehicles
with a selectable AMG Performance exhaust
system.
X Press the thumbwheel to the right of the con-
troller.
or X Press the 8button on the multifunction
steering wheel.
If the audio output is switched off, the status
line will show the 8symbol. If you switch
the media source or change the volume, the
sound is automatically switched on.
i You will hear navigation messages even
when the sound is muted.
Functions The multimedia system has the following func-
tions:
R Radio mode
R Media mode with media search
R Sound systems R
Navigation system
COMAND Online: navigation using hard drive
Audio 20: navigation using SD memory card
R Communication functions
R Vehicle functions with system settings
R Favourites functions
Controller The controller in the centre console lets you:
R select menu items on the display
R enter characters
R select a destination on the map
R save entries
The controller can be:
R turned 3
R slid left or right 1
R slid forwards or back 4
R slid diagonally 2
R pressed briefly or pressed and held 7
Back button You can use the
%button to exit a menu or to
call up the basic display of the current operating mode.
X To exit the menu: briefly press the%
button.
The multimedia system changes to the next
higher menu level in the current operating
mode.
X To call up the basic display: press the%
button for longer than two seconds.
The multimedia system changes to the basic
display of the current operating mode. Touchpad
Switching the touchpad on/off Multimedia system:
X Select Vehicle VehicleQSystem set‐ System set‐
tings tingsQTouchpad TouchpadQActivate touch‐ Activate touch‐
pad pad.
Touchpad is activated Oor deactivated ª. Operating system
285Multimedia system Z

Operating the touchpad
:
Touch-sensitive surface
; Favourites button
= Calls up audio and telephone menu (quick
access)
? Returns to the previous display
You can navigate in menus and lists via touch-
sensitive surface :by using a single finger
swiping gesture.
X To select the menu item: swipe up, down, to
the left or right.
X Press the touchpad.
X To move the digital map: swipe in all direc-
tions.
Use a two-finger swiping gesture , e.g. to use
these functions:
X To show or hide the audio menu: swipe up
or down with two fingers.
X To increase or reduce the vehicle settings
and sound settings: turn two fingers clock-
wise or anti-clockwise.
X To zoom in and out of the map: move two
fingers together or apart.
Character input with handwriting rec-
ognition Entering characters
X Use one finger to write characters on the sur-
face.
The character is entered in the input line. If
the character that you have entered can be
interpreted in different ways, the suggested
characters are displayed.
X If character suggestions are shown, turn and
press the controller.
X Resume character input on the touchpad. Handwriting recognition
:
Active input line
; Enters a space
= Character input on the touchpad
? Deletes characters (example: COMAND
Online)
X To display the menu: press the touchpad. :
Exits the menu
; Returns to handwriting recognition
= Uses the phone book or text templates
(COMAND Online)
? Selects the input line or to change the posi-
tion of the cursor
A Switches the language
B Finishes character entry
X To select the input line: selectp.
X Swipe up or down.
X To move the cursor within the input line:
select p.
X Swipe to the left or right.
X To delete characters: swipe to the left if an
input line is selected.
X To confirm the entry: press the touchpad.286
Operating systemMultimedia system

Switching the handwriting recognition
read-aloud function on and off
Multimedia system:
X Select Vehicle
VehicleQSystem set‐ System set‐
tings
tingsQTouchpad TouchpadQRead out hand‐ Read out hand‐
writing recognition
writing recognition.
The read-aloud function is switched on Oor
off ª.
Quick access for audio Changing the station/music track
Depending on the audio source that is currently
activated, you can use this function to select thenext station or music track.
X Swipe upwards with two fingers on the touch-
pad.
The current audio source is displayed.
X To select the previous or next station/
music track:
swipe to the left or right.
The selected station/music track is played.
Switching the character entry between
touchpad and controller Requirement: an input line for text, numbers or
characters has been selected.
X To switch to the controller: press the con-
troller.
Character entry using the controller is active.
X To switch to the touchpad: press the touch-
pad with your finger.
Handwriting recognition on the touchpad is
active. Favourites
Calling up and exiting favourites X
To call up: press thegbutton on the con-
troller or on the touchpad.
X Select a favourite, e. g. Vehicle
Vehicle.
The favourites are displayed.
X To exit: press the gbutton again.
Adding favourites Adding a predefined favourite
:
To add a new favourite
; To rename a selected favourite
= To move a selected favourite
? To delete a selected favourite
X Press the gbutton.
X Slide 6the controller.
The menu bar is shown.
X Select Reassign Reassign.
The categories are displayed.
X Select a category.
The favourites are displayed.
X Select a favourite.
X Add a favourite at the desired position.
If a favourite has already been added at this
position, it will be overwritten.
Adding your own favourite
X Select Vehicle VehicleQClimate control Climate control.
X Press and hold the gbutton until the
favourites are displayed.
X Add a favourite at the desired position.
If a favourite has already been added at this
position, it will be overwritten. Operating system
287Multimedia system Z