heating MERCEDES-BENZ C-CLASS CABRIOLET 2016 Owner's Manual

You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden acceleration,
steering and braking manoeuvres. Do not use
cruise control or DISTRONIC PLUS.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Vehicles with manual transmission: shift
to neutral.
X Vehicles with automatic transmission:
shift the transmission to position
N.
X Try to bring the vehicle under control by using
corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in wooded areas or on bridges. The vehicle could
skid if you fail to adapt your driving style. Always adapt your driving style and drive at a speed to
suit the prevailing weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Further information on driving with snow chains
(Y page 345).
Further information on driving with summer
tyres (Y page 344).
Observe the notes in the "Winter operation" sec-
tion (Y page 344). Driving systems
Mercedes-Benz Intelligent Drive
Mercedes-Benz Intelligent Drive stands for inno-
vative driver assistance and safety systems
which enhance comfort and support the driver in critical situations. With these intelligent co-ordi-
nated systems Mercedes-Benz has set a mile-
stone on the path towards autonomous driving.
Mercedes-Benz Intelligent Drive embraces all
elements of active and passive safety in one well
thought-out system – for the safety of the vehi-
cle occupants and that of other road users.
Further information on driving safety systems
(Y page 66). Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. Shift to a lower gear in
good time on long and steep downhill gradients.
Take particular note of this when driving a laden vehicle and when towing a trailer. By doing so,
you will make use of the braking effect of the
engine. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
Use cruise control only if road and traffic con-
ditions are appropriate for maintaining a steadyspeed for a prolonged period. You can store anyroad speed above 30 km/h. If you have set a
permanent limit speed, you cannot set the
speed any higher than the fixed limit speed
(Y page 171).
Important safety notes Cruise control can neither reduce the risk of an
accident if you fail to adapt your driving style nor
override the laws of physics. Cruise control can- not take into account road, weather or traffic
conditions. Cruise control is only an aid. You are
responsible for maintaining a safe distance from the vehicle in front, for vehicle speed, for brak-
ing in good time and for staying in lane.
Do not use cruise control:
R in road and traffic conditions that do not allow
you to maintain a constant speed, e.g. in
heavy traffic or on winding roads.
R on smooth or slippery roads. Braking or accel-
erating can cause the drive wheels to lose
traction and the vehicle could then skid.
R when there is poor visibility, e.g. due to fog,
heavy rain or snow.
If there is a change of drivers, advise the new
driver of the speed stored.
i The speed indicated in the speedometer
may differ slightly from the speed stored. Driving systems
167Driving and parking Z

Setting a speed
Bear in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the set speed.
X Press the cruise control lever up :for a
higher speed or down ?for a lower speed.
X Keep the cruise control lever pressed until the
desired speed is reached.
X Release the cruise control lever.
The new speed is stored.
X To adjust the set speed in1 km/hincre-
ments:
briefly press the cruise control lever
up : or down ?to the pressure point.
The last stored speed increases or decreases
in 1 km/h increments.
X To adjust the set speed in10 km/hincre-
ments: briefly press the cruise control lever
up : or down ?beyond the pressure point.
The last stored speed increases or decreases
in 10 km/h increments.
i Cruise control is not deactivated if you
depress the accelerator pedal. If you acceler-
ate to overtake, cruise control adjusts the
vehicle's speed to the last speed stored after
you have finished overtaking.
Deactivating cruise control There are several ways to deactivate cruise con-
trol:
X Briefly press the cruise control lever forwards
B.
or
X Brake.
or
X Briefly move the cruise control lever in the
direction of arrow A.
Variable SPEEDTRONIC is selected. LIM indi-
cator lamp ;in the cruise control lever is on.
Cruise control is automatically deactivated if: R you apply the electric parking brake
R you are driving at less than 30 km/h
R ESP ®
engages or you deactivate ESP ®
R while driving a vehicle with manual transmis-
sion, you engage neutral or depress the clutch
pedal for longer than six seconds R
on vehicles with manual transmission, you
shift to a gear that is too high, and as a result
the engine speed is too low
R in vehicles with automatic transmission, you
shift to position Nwhile driving
If cruise control is deactivated, a warning tone
sounds. You will see the Cruise control off
Cruise control off
message on the multifunction display for
approximately five seconds. The message on
the multifunction display disappears and the
segments on the speedometer go out.
i The last speed stored is cleared when you
switch off the engine. SPEEDTRONIC
General notes SPEEDTRONIC is used to set a speed limit for
your vehicle. If the vehicle speed exceeds the
set speed limit, SPEEDTRONIC brakes automat-
ically. Shift to a lower gear in good time on long and steep downhill gradients. Take particular
note of this when driving a laden vehicle and
when towing a trailer. By doing so, you will make
use of the braking effect of the engine. This
relieves the load on the brake system and pre-
vents the brakes from overheating and wearing too quickly.
Important safety notes SPEEDTRONIC can neither reduce the risk of an
accident if you fail to adapt your driving style nor
override the laws of physics. SPEEDTRONIC
cannot take into account road, weather or traffic
conditions. SPEEDTRONIC is only an aid. You
are responsible for maintaining a safe distance
from the vehicle in front, for vehicle speed, for
braking in good time and for staying in lane.
If there is a change of drivers, advise the new
driver of the speed stored.
You can set a variable or permanent limit speed:
R variable for speed limits, e.g. in built-up areas
R permanent for long-term speed restrictions,
e.g. when driving with winter tyres fitted
(Y page 171)
i The speed indicated in the speedometer
may differ slightly from the limit speed stored. Driving systems
169Driving and parking Z

Couple and uncouple the trailer carefully. If you
do not couple the trailer to the towing vehicle
correctly, the trailer could become detached.
When towing a trailer, your vehicle's handling
characteristics will be different to when driving
without a trailer.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleration and gradient-
climbing capability
R has an increased braking distance
R is affected more by strong crosswinds
R demands more sensitive steering
R has a larger turning circle
This can impair the vehicle's handling charac-
teristics. Adapt your driving style accordingly.
Maintain a safe distance. Drive carefully.
When towing a trailer, always adjust your speed to the current road and weather conditions. Do
not exceed the maximum permissible speed for
your vehicle/trailer combination. Notes on towing a trailer
General notes Towing a trailer is not possible with
Mercedes
‑AMG vehicles.
When towing a trailer, set the tyre pressure on
the rear axle of the towing vehicle for a maxi-
mum load. Further information on the tyre pres-
sure table in the fuel filler flap (Y page 345).
You will find permissible trailer loads under
"Technical data" (Y page 369).
Driving tips Observe the information on ESP
®
trailer stabili-
sation (Y page 75).
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check the
trailer's documents to see what the maximum
permitted speed is. Observe the maximum per-
missible speed in the relevant country.
For certain Mercedes-Benz vehicles, the maxi-
mum permissible rear axle load is increased
when towing a trailer. See the "Technical data"
section to find out whether this applies to your
vehicle (Y page 369). In the event of increased
rear axle load, the car/trailer combination may not exceed a maximum speed of 100 km/h for
reasons concerning the operating permit. This
also applies in countries in which the maximum
permissible speed for car/trailer combinations
is greater than 100 km/h.
When towing a trailer, your vehicle's handling
characteristics will be different to when driving
without a trailer and the vehicle will consume
more fuel.
Shift to a lower gear in good time on long and
steep downhill gradients.
This also applies in the case of:
R activated DISTRONIC PLUS
R activated cruise control
This will use the braking effect of the engine, so
less braking will be required to maintain the
vehicle speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly. If you need
additional braking, depress the brake pedal
repeatedly rather than continuously.
Driving tips R
Maintain a greater distance to the vehicle in
front than when driving without a trailer.
R Avoid braking abruptly. If possible, brake gen-
tly at first to allow the trailer to run on. Then,
increase the braking force rapidly.
R The values given for gradient-climbing capa-
bilities from a standstill refer to sea level.
When driving in mountainous areas, note that
the power output of the engine, and conse-
quently the vehicle's gradient-climbing capa-
bility from a standstill, decrease with increas- ing altitude.
If the trailer swings from side to side:
X Do not accelerate under any circumstances.
X Do not countersteer.
X Brake, if necessary. Folding the ball coupling in/out
Folding out the ball coupling G
WARNING
If the ball coupling is not correctly engaged,
the trailer can detach. There is a risk of an
accident. 214
Towing a trailerDriving and parking

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 #
Stop vehicle See Stop vehicle See
Owner's Manual Owner's Manual The battery is no longer being charged and the charge status is too
low.
A warning tone also sounds.
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 Observe the instructions in the display #See
See Owner's Owner's Manual
Manual
message.
X Consult a qualified specialist workshop. #
Stop vehicle Leave Stop vehicle Leave
engine running engine running The battery charge status is too low.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving.
X Leave the engine running.
X Wait until the display message disappears before pulling away. #
Start engine See Start engine See
Owner's Manual Owner's Manual The engine is off and the charge status is too low.
X Switch off any electrical consumers that you do not need, such as
the rear window heating and interior lighting.
X Leave the engine running for a few minutes, or drive for an extended
period.
The battery charges. 4
Check Check
eng.
eng.oil
oillev.
lev.
when
when next
nextrefuelling
refuelling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
! Avoid long journeys when there is too little coolant in the cooling
system. Otherwise the engine will be damaged.
X Check the engine oil level when next refuelling, at the latest
(Y page 310).
X If necessary, top up the engine oil (Y page 311).
If you have to top up the engine oil frequently:
X Contact a qualified specialist workshop and have the engine
checked.
Information on approved engine oils can be obtained from a qualified specialist workshop or on the internet at http://bevo.mercedes-
benz.com. 256
Display
messagesOn-board computer and displays

X
To open: open the stowage compartment
(Y page 297).
X Push the cover of the ashtray upwards on its
right side =.
X To remove the insert: hold the sides of
insert ?, push it forwards slightly and lift it
up ; and out.
X To refit the insert: press insert?into the
holder until it engages.
X To close: close the cover of the ashtray.
X Push cover :of the stowage compartment
closed.
i You can remove the ashtray insert and use
the resultant compartment for stowage.
Rear-compartment ashtray X
To open: pull cover ;out by its top handle
edge.
X To remove the insert: push ribbing=from
the left side and pull insert :up and out.
X To fit the insert: fit insert:into the holder
from above and press down into the holder
until it engages. Cigarette lighter
G
WARNING
You can burn yourself if you touch the hot
heating element or the socket of the cigarette lighter.
In addition, flammable materials can ignite if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the knob.
Always make sure that the cigarette lighter is
out of reach of children. Never leave children unattended in the vehicle.
Your attention must always be focused on the
traffic conditions. Use the cigarette lighter only when road and traffic conditions permit. Cigarette lighter (example)
X Turn the key to position 2in the ignition lock
(Y page 133).
X To open: open the stowage compartment
(Y page 297).
X Press in cigarette lighter ;.
Cigarette lighter ;will pop out automatically
when the heating element is red-hot.
X To close: push cover :of the stowage com-
partment closed. 12 V sockets
General notes X
Turn the key to position 1in the ignition lock
(Y page 133). Features
303Stowing an d features Z

Engine compartment
Bonnet
Important safety notes G
WARNING
An unlocked bonnet may open up when the
vehicle is in motion and block your view. There is a risk of an accident.
Never unlock the bonnet when driving. Before
every trip, ensure that the bonnet is locked. G
WARNING
When being opened and closed, the bonnet
may suddenly fall into the closed position.
There is a risk of injury to persons in the range of movement of the bonnet.
Open and close the bonnet only when nobody
is in the range of movement. 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. G
WARNING
There are moving components in the engine
compartment. Certain components may con-
tinue to move or suddenly move again even
after the ignition has been switched off, e.g.
the radiator fan. There is a risk of injury.
If you have to carry out work in the engine
compartment:
R switch off the ignition
R never touch the dangerous areas surround-
ing moving components, e.g. the rotation
area of the fan R
remove jewellery and watches
R keep items of clothing and hair, for exam-
ple, away from moving parts.
Active bonnet (pedestrian protection) Operating principle
! An active bonnet that had been triggered
must be repaired at a qualified specialist
workshop. The active bonnet function will
then be available again. The additional pedes- trian protection provided by the active bonnet
will then be restored.
The active bonnet is available only in certain
countries.
The active bonnet can reduce the risk of injury to pedestrians in certain accident situations. Rais-
ing the active bonnet increases the clearance to hard components, such as the engine.
If the active bonnet has been triggered, it is
raised at the rear in the area around the hinges by approximately 80 mm. The active bonnet is
triggered by pyrotechnics.
For the drive to the workshop, reset the trig-
gered active bonnet yourself. If the active bon-
net has been triggered, pedestrian protection
may be limited.
Resetting G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. 308
Engine compartmentMaintenance and care

Engine oil
Important safety notes G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. G
WARNING
There are moving components in the engine
compartment. Certain components may con-
tinue to move or suddenly move again even
after the ignition has been switched off, e.g.
the radiator fan. There is a risk of injury.
If you have to carry out work in the engine
compartment:
R switch off the ignition
R never touch the dangerous areas surround-
ing moving components, e.g. the rotation
area of the fan
R remove jewellery and watches
R keep items of clothing and hair, for exam-
ple, away from moving parts. G
WARNING
If engine oil comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Make sure that engine oil does not spill out
over the filler neck. Allow the engine to cool
down and thoroughly clean the components
that have come into contact with engine oil
before you start the engine. 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.
General notes Depending on your driving style, the vehicle
consumes up to 0.8 l of oil per 1000 km. The oil
consumption may be higher than this when the
vehicle is new or if you frequently drive at high
engine speeds.
Depending on the engine, the oil dipstick may beinstalled at different locations.
To check the oil level:
R park the vehicle on a level surface
R the engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature
R All vehicles (except Mercedes-AMG C 63
and Mercedes ‑AMG C 63 S):if the engine is
not at normal operating temperature, e.g. if
the engine was started only briefly, wait
approximately 30 minutes before carrying out the measurement
Mercedes ‑AMG C 63 and Mercedes ‑AMG C
63 S: The oil level must only be checked when
the engine is at normal operating temperature.
Checking the oil level using the oil dip-
stick Check the oil level with the oil dipstick (exam-
ple)
X Pull oil dipstick :out of the dipstick tube.
X Wipe off oil dipstick :.310
Engine compartmentMaintenance and care

cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open the cap. Wear gloves and eye protection. Open
the cap slowly to release the pressure. 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.
Checking the coolant level Check the coolant level (example)
X Park the vehicle on a level surface.
Check the coolant level only if the vehicle is
on a level surface and the engine has cooled
down.
X Turn the key to position 2in the ignition lock
(Y page 133).
or
X Press the Start/Stop button twice on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 133).
X Check the coolant temperature display on the
instrument cluster (Y page 221).
The coolant temperature must be below
70 †. X
Turn the key to position 0in the ignition lock
(Y page 133).
or X Press the Start/Stop button once on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 133).
X Slowly turn cap :half a turn anti-clockwise
and allow excess pressure to escape.
X Turn cap :further anti-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.
If the coolant level is approximately 1.5 cm
above marker bar =in the filler neck when
warm, there is enough coolant in coolant
expansion tank ;.
X If necessary, top up with coolant that has
been tested and approved by Mercedes-Benz.
X Replace cap :and turn it clockwise as far as
it will go.
Further information on coolant (Y page 366).
Topping up the windscreen washer sys-
tem G
WARNING
If windscreen washer concentrate comes into contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler neck. Topping up the windscreen washer system
(example)312
Engine compartmentMaintenance and care

Special service requirements
The prescribed service interval is based on nor-
mal operation of the vehicle. Service work will
need to be performed more often if the vehicle is
operated under arduous conditions or increased loads, for example:
R Regular city driving with frequent intermedi-
ate stops
R If the vehicle is primarily used to travel short
distances
R For frequent use in mountainous terrain or on
poor road surfaces
R If the engine is often left idling for long periods
In these or similar operating conditions, have
the air filter, engine oil and oil filter, for example, changed more frequently. The tyres must be
checked more frequently if the vehicle is oper-
ated under increased loads. Further informationcan be obtained at a qualified specialist work-
shop, e.g. a Mercedes-Benz Service Centre.
Driving abroad An extensive Mercedes-Benz Service network is
also available in other countries. You can obtain further information from any Mercedes-Benz
Service Centre. Care
General notes
! For cleaning your vehicle, do not use any of
the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective films
with hard objects, e.g. a ring or ice scraper.
You could otherwise scratch or damage the
surfaces and protective film.
! Do not park up your vehicle for a long period
of time immediately after cleaning, particu-
larly after cleaning the wheel rim with wheel
cleaner. Wheel cleaner may lead to increased corrosion of the brake discs and pads. You
should therefore drive for a few minutes after
cleaning. By heating up the brakes, the brake discs and pads dry. The vehicle can then be
parked up for a long period of time. H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
Regular care of your vehicle is a condition for
retaining quality in the long term.
Use care products and cleaning agents recom-
mended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after the vehicle has been washed. There is a risk of an acci-
dent.
After washing the vehicle, brake carefully
while paying attention to the traffic conditions in order to restore full braking efficiency.
! When DISTRONIC PLUS or the HOLD func-
tion is activated, the vehicle brakes automat- ically in certain situations.
To avoid damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or similar situations:
R when towing away
R in a car wash
! Preferably use car washes with adjustable
high-pressure jets for pre-washing. This cor-
responds with the specifications for cabriolet programmes. In car washes that use high
water pressures, there is a risk that a small
amount of water may leak into the vehicle.
! Make sure that the vehicle is not subse-
quently treated with hot wax.
! Always remove the key before washing the
vehicle in a car wash. Doing so ensures that
the wind deflector on the windscreen
retracts. The wind deflector may otherwise be damaged.
! Make sure: 314
CareMaintenance and care