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

Therefore, you could be locked out if:
R the vehicle is being pushed
R the vehicle is being towed
R the vehicle is being tested on a dynamometer
You can also switch the automatic locking func- tion on and off using the multimedia system (see
the Digital Owner's Manual). Locking/unlocking the driver's door
with the emergency key element
i In order to lock all of the vehicle's locks,
begin by pressing the button for locking the
vehicle from the inside while the driver's door is open. Then proceed to lock the driver's
door using the emergency key element. X
Insert the emergency key element into open-
ing :in the protective cap.
X Pull and hold the door handle.
X Pull the protective cap on the emergency key
as straight as possible away from the vehicle until it releases.
X Release the door handle. X
To lock: turn the emergency key element
clockwise as far as it will go to position 1.
X To unlock: turn the emergency key element
anti-clockwise as far as it will go to position
1.
Right-hand-drive vehicle: turn the emergency
key element in the opposite direction in both
cases.
If you use the emergency key element to unlock
and open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
(Y page 78). Boot
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when the engine is running, espe-
cially if the vehicle is in motion. There is a risk of poisoning.
Always switch off the engine before opening
the boot lid. Never drive with the boot lid
open. G
WARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, especially when braking or abruptly changing directions.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
! The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
The opening dimensions of the boot lid can be
found in the "Vehicle data" section
(Y page 367).
Do not leave the key in the boot. If you do so, you could lock yourself out. Boot
89Opening and closing Z

AIRCAP has the following components:
R a wind deflector above the windscreen
R a draught stop behind the two rear-seat head
restraints
When AIRCAP has been activated, the draught
stop extends up between the two rear-seat head
restraints. At the same time, the wind deflector
extends out along the front windscreen.
AIRCAP can be activated or deactivated up to
speeds of approximately 160 km/h.
Activating and deactivating AIRCAP X
Turn the key to position 2in the ignition lock.
X To activate: pull switch:.
The draught stop behind the rear-seat headr-
ests and the wind deflector in the roof frame
extend simultaneously. The indicator lamp in
switch :lights up.
X To deactivate: press switch:.
The draught stop behind the rear-seat headr-
ests and the wind deflector in the roof frame
retract simultaneously. The indicator lamp in
switch :goes out.
If you park your vehicle with the soft top down
and remove the key, the wind deflector and the
draught stop retract automatically. When you
restart your engine after having been parked,
the wind deflector and the draught stop extend
again automatically.
AIRCAP cannot be extended or retracted if the
vehicle speed exceeds approximately
160 km/h. Folding draught stop
Important safety notes G
WARNING
If you use the draught stop in darkness or in
other conditions offering poor visibility, your
view to the rear is further impaired. There is a
risk of an accident.
Only use the draught stop when visibility con- ditions are good. G
WARNING
If the draught stop is not fitted correctly, it
could come loose during the journey and
endanger other road users. There is a risk of
an accident and injury.
Fit the draught stop as described.
! Fit or remove the draught stop only when
the soft top is open. You could otherwise
damage the draught stop or the vehicle inte-
rior.
! Observe the backrest position of the front
seats if the draught stop is installed, since the
backrest could collide with the draught stop
here.
! Mercedes-Benz recommends that you only
use draught stops which have been tested
and approved for Mercedes-Benz vehicles.
This helps to prevent damage to the vehicle.
The folding draught stop protects against wind
when driving with the soft top open. It is secured
above the rear bench seats. For this reason, only the driver and the front passenger can travel in
the vehicle when the folding draught stop is fit-
ted.
The folding draught stop can be fitted or
removed from the driver's side or passenger
side.
You should preferably perform operations
involving the folding draught stop on the side
facing away from traffic, after you have stopped the vehicle, paying attention to road and traffic
conditions. Convertible top
97Opening and closing Z

Fitting/removing the folding draught
stop Fitting
The folding draught stop is stored in a bag. The
bag is attached with a securing strap to the
through-loading facility behind the rear seats.
If you wish to use the through-loading facility,
loosen the securing strap attached to the
through-loading facility and stow the folding
draught stop in the boot. Use the securing strap to fasten the bag to one of the luggage hooks in the boot. X
Open all side windows and the soft top.
X Fold the rear seats forward (Y page 299) and
remove the bag containing the folding
draught stop.
X Remove the folding draught stop from the
bag. X
Fold out the folding draught stop :as
shown.
X Fold out the two brackets ;to the left and
right. X
Align the brackets ;of the folding draught
stop :with the two rear fixtures =on the
vehicle. Perform the following steps in sequence on both
sides of the vehicle:
X Pull the handle ?in the direction of the
arrow.
X Align the folding draught stop :with the side
fixture Aon the vehicle from above and
insert.
X Push the handle ?on the folding draught
stop :back as far as it will go.
The folding draught stop :is locked.
Removing
X Pull the handles ?on the left and right one
after the other and slide the folding draught
stop :out of fixture Afrom above.
The folding draught stop :is unlocked.
X Pull the folding draught stop :out of the two
rear fixtures =.98
Convertible topOpening and closing

X
Fold in the two brackets ;on the folding
draught stop :.
X Fold the folding draught stop :together and
stow it in the bag.
X Use the securing strap to attach the bag con-
taining the folding draught stop to the
through-loading facility behind the rear seats. Problems with the convertible top
Problem
Possible causes/consequences and
M MSolutions The soft top will not open
or close. The ignition is not switched on.
X Make sure that the key is in position 2in the ignition lock. The boot lid is open.
X Close the boot lid (Y page 90). The boot separator is not closed.
X Close the boot separator (Y page 96). The roll bars have been deployed.
X Consult a qualified specialist workshop. The soft-top mechanism or control system is defective.
X Consult a qualified specialist workshop. The soft top has been opened and closed several times in a row. The
soft-top drive has been deactivated automatically for safety reasons.
You can open and close the soft top again after approximately ten
minutes.
X Turn the ignition off and then back on.
X Repeat the opening or closing procedure. Convertible top
99Opening and closing Z

Running-in notes
Important safety notes
In certain driving and driving safety systems, the sensors adjust automatically while a certain dis-
tance is being driven after the vehicle has been delivered or after repairs. Full system effective-
ness is not reached until the end of this teach-in process.
Brake pads/linings and discs that either are new or have been replaced achieve optimum braking
effect only after several hundred kilometres of
driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. The first 1500 km
The more you treat the engine with sufficient
care at the start, the more satisfied you will be
with the engine performance later on.
R You should therefore drive at varying road
speeds and engine speeds for the first
1500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at full throttle.
R When shifting gears manually, shift up in good
time, before the rev counter needle reaches
Ô of the way to the red area of the rev counter
display.
R Do not shift down a gear manually in order to
brake.
R Vehicles with automatic transmission: try to
avoid depressing the accelerator pedal
beyond the pressure point (kickdown).
Additional notes on running in Mercedes-AMG
vehicles:
R Do not drive at speeds above 140 km/h for
the first 1500 km.
R Allow the engine to reach a maximum engine
speed of 4500 rpm only briefly.
R Drive the vehicle mainly in drive program Cfor
the first 1500 km.
After 1500 km, you can increase the engine
speed gradually and accelerate the vehicle to
full speed.
You should also observe these notes on running- in if the engine or parts of the drive train on your
vehicle have been replaced. Always observe the maximum permissible
speed. Self-locking rear axle differential
(Mercedes-AMG vehicles)
Your vehicle is equipped with a self-locking dif-
ferential on the rear axle.
Change the oil to improve protection of the rear
axle differential:
R after a running-in period of 3000 km
R every 50,000 km or 3 years
These oil changes prolong the service life of the
differential. Have the oil change carried out at a
qualified specialist workshop. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can impede
pedal travel or block a pedal which is
depressed. This jeopardises safe operation of the vehicle. There is a risk of an accident.
Stow all objects in the vehicle safely, so that
they cannot reach the driver's footwell. Make sure the floormats and carpets are properly
secured so that they cannot slip and obstruct the pedals. Do not lay several floormats or
carpets on top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, 132
DrivingDriving and parking

ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When the vehicle pulls away again, the engine
starts automatically. The ECO start/stop func-
tion thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving. There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes :
ECO start/stop display
Excluding Mercedes-AMG vehicles: the ECO
start/stop function is switched on whenever
you start the engine using the key or the Start/ Stop button.
If the è ECO symbol is shown on the multi-
function display, the ECO start/stop function
switches the engine off automatically if the vehi-
cle stops moving.
If the ECO start/stop function has been
switched off manually (Y page 139) or as the
result of a malfunction, the èorç ECO
symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is available only in drive program C.
Mercedes-AMG C 43 4MATIC: the ECO start/
stop function is available only in drive programs
C and E. Mercedes-AMG vehicles:
the ECO start/stop
function is switched on whenever you restart
the engine using the key or the Start/Stop but- ton. This is the case if:
R the ignition was switched off for more than
four hours or
R the ECO start/stop function had been
switched on before the engine was switched
off
Automatic engine switch-off General notes
If the vehicle is braked to a standstill with the
transmission in hori, the ECO start/stop
function switches off the engine automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
The ECO start/stop function is operational and
the è ECO symbol is shown on the multi-
function display if:
R the indicator lamp in the ECO button is lit
green
R the outside temperature and the atmospheric
air pressure are within a range that is suitable for the system
R the engine is at normal operating temperature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system does not detect moisture on the
windscreen when the air-conditioning system
is switched on
R the bonnet is closed
R the driver's door is closed and the driver's
seat belt is fastened
If all conditions for automatic engine switch-off
are not fulfilled, the çECO symbol is shown.
All the vehicle's systems remain active when the engine is switched off automatically.
Mercedes-AMG C 63 and Mercedes-AMG
C 63 S: the number of consecutive automatic
engine stops is unlimited.
All other models: the engine can be switched
off automatically a maximum of four times (ini-
tial stop, then three subsequent stops) in suc- Driving
137Driving and parking Z

Transmission positions
B Park position
This secures the vehicle against roll-
ing away when stopped.
Only shift the transmission to posi-
tion
Pwhen the vehicle is stationary
(Y page 145). The parking lock
should not be used as a brake when
parking. In order to secure the vehi-
cle, always apply the electric parking brake in addition to the parking lock.
Park position Pis automatically
engaged if:
R you switch off the engine using the
key and remove the key
R you switch off the engine using the
key or using the Start/Stop button
and open the driver's door or front- passenger door
R you open the driver's door when
the vehicle is stationary or when
driving at a very low speed and the
transmission is in position Dor R
In the event of a malfunction of the
vehicle's electronics, the transmis-
sion may lock in position P. Have the
vehicle electronics checked immedi-
ately at a qualified specialist work-
shop. C Reverse gear
You can shift the transmission to
position
Ronly when the vehicle is
stationary (Y page 145). A Neutral
Do not shift the transmission to
N
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brake pedal will allow
you to move the vehicle freely, e.g. to push it or tow it.
If ESP ®
is deactivated or faulty: shift
the transmission to position Nif the
vehicle is in danger of skidding, e.g.
on icy roads.
If you switch the engine off with the
transmission in position Ror D, the
automatic transmission shifts to N
automatically.
! Rolling in neutral
Ncan lead to
damage to the transmission. 7 Drive
The automatic transmission changes
gear automatically. All forward gears
are available. Driving tips
Changing gear The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position
D. Gearshifting is determined
by:
R the selected drive program
R the position of the accelerator pedal
R the road speed
Accelerator pedal position Your driving style influences how the automatic
transmission shifts gear:
R little throttle: early upshifts
R more throttle: late upshifts
Double-clutch function When shifting down, the double-clutch function
is active regardless of the drive program. The
double-clutch function reduces load change Automatic transmission
147Driving and parking Z

When the pump nozzle switches off automati-
cally during filling at a filling pump, the AdBlue ®
tank has been completely filled. Do not fill the
AdBlue ®
tank any further. AdBlue ®
may leak
out.
To avoid transporting already opened refill con-
tainers in the vehicle, completely empty refill
bottles or canisters when filling the AdBlue ®
tank, if possible.
Further information on AdBlue ®
(Y page 364).
Opening/closing the AdBlue ®
filler cap X
To open:switch the ignition off.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings open.
X Turn blue AdBlue ®
filler cap ;anti-clockwise
and remove it.
AdBlue ®
filler cap ;is secured with a plastic
strip.
X To close:fit AdBlue ®
filler cap ;onto the
filler neck and turn it clockwise.
X To close the fuel filler flap, press it in the
direction of arrow :.
X Drive at a speed greater than 15 km/h.
The Refill AdBlue See Owner’s Manual
Refill AdBlue See Owner’s Manual
message disappears after approximately one minute.
If the Refill AdBlue See Owner’s Manual Refill AdBlue See Owner’s Manual
message continues to be shown on the multi-
function display, you must top up with more
AdBlue ®
.
i The fuel filler flap is unlocked or locked
automatically when you unlock or lock the
vehicle. AdBlue
®
refill canisters !
Do not tighten the disposable hose too
firmly. The disposable hose could otherwise
be damaged and AdBlue ®
may leak out. X
Unscrew the cap from the opening on top of
AdBlue ®
refill canister ;.
X Place disposable hose :on the opening of
AdBlue ®
refill canister ;and screw it on
clockwise until hand-tight.
Disposable hose :remains closed until you
fasten disposable hose :to the AdBlue ®
filler neck of the vehicle. X
Place disposable hose :on the filler neck on
the vehicle and screw it on clockwise until
hand-tight. When you feel resistance, dispos- able hose :is sufficiently secured.
X Lift up and tip AdBlue ®
refill canister ;.
Filling stops when the AdBlue ®
tank is com-
pletely filled. Do not fill the AdBlue ®
tank any
further. AdBlue ®
refill canister ;can be
removed when it has been only partially emp-
tied.
X Turn disposable hose :on the filler neck of
the vehicle anti-clockwise and remove it. 158
RefuellingDriving and parking

X
Turn disposable hose :on the opening of
AdBlue ®
refill canister ;anti-clockwise and
remove it.
X Reseal AdBlue ®
refill canister ;with the cap.
AdBlue ®
refill canisters are available at many
filling stations or at a qualified specialist work-
shop. AdBlue ®
refill canisters are often sold with
a filler hose. A filler hose that does not exactly fit
the vehicle's AdBlue ®
tank offers no overfill pro-
tection. AdBlue ®
may leak out as a result of
overfilling. Mercedes-Benz offers a special dis-
posable hose with overfill protection. You can
obtain this from any Mercedes-Benz Service
Centre. AdBlue ®
is available in a variety of con-
tainers and receptacles. Use the disposable
hose only with the Mercedes-Benz AdBlue ®
refill
canisters.
AdBlue ®
refill bottle !
Only screw on the AdBlue ®
refill bottle so
that it is hand-tight. Otherwise, the thread of
the AdBlue ®
refill bottle could be damaged
and AdBlue ®
could leak out. X
Unscrew the protective cap from AdBlue ®
refill bottle :.
X Place AdBlue ®
refill bottle :on the filler
neck as shown and screw it on clockwise until hand-tight.
X Press AdBlue ®
refill bottle :towards the
filler neck.
The AdBlue ®
tank is filled. This could take up
to one minute.
When AdBlue ®
refill bottle :is no longer
pressed, filling stops and the bottle may be
removed again after being only partially emp- tied.
X Release AdBlue ®
refill bottle :. X
Turn AdBlue ®
refill bottle :anti-clockwise
and remove it.
X Screw the protective cap onto AdBlue ®
refill
bottle :again.
AdBlue ®
refill bottles are available at many fill-
ing stations or at a qualified specialist work-
shop. Refill bottles without a threaded seal offer
no overfill protection. AdBlue ®
may leak out as a
result of overfilling. Mercedes-Benz offers spe-
cial refill bottles with a threaded cap. These are
available at any Mercedes-Benz Service Centre. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rial can come into contact with hot vehicle
components. In particular, do not park on dry grassland or harvested grain fields. G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position Por shift manual transmission into
neutral
R start the engine
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged. Parking
159Driving and parking Z

To ensure that the vehicle is secured against
rolling away unintentionally:
R the electric parking brake must be applied
R on vehicles with manual transmission, engage
first gear or reverse gear
R on vehicles with automatic transmission, the
transmission must be in position Pand the
key must be removed from the ignition lock
R the front wheels must be turned towards the
kerb on steep uphill or downhill gradients
R the empty vehicle must be secured at the
front axle with a wheel chock or similar
object, for example, on uphill or downhill gra-
dients
R on uphill or downhill gradients the laden vehi-
cle must also be secured at the rear axle, for
example with a wheel chock or similar object Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Vehicles with manual transmission X
Shift to either 1st gear or reverse gear R.
X Turn the key to position 0in the ignition lock
and remove it.
The immobiliser is activated.
X Apply the electric parking brake.
Vehicles with automatic transmission X
Apply the electric parking brake.
X Shift the transmission to position P.X
With the key: turn the key to position 0in the
ignition lock and remove it.
The immobiliser is activated.
X With the Start/Stop button: press the
Start/Stop button (Y page 133).
The engine stops and all the indicator lamps in the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to key position 1. When the driver's
door is open, this corresponds to key position
0: "key removed".
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
With the key: if you then open the driver's door
or the front-passenger door or remove the key
from the ignition, the automatic transmission
shifts to Pautomatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing
system:
X Vehicles with KEYLESS-GO or KEYLESS-
GO start function:
remove the Start/Stop
button from the ignition lock.
X Insert the key into the ignition lock.
X All vehicles: switch the ignition on.
X Depress the brake pedal and keep it
depressed.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in the
ignition lock.
The engine can be switched off while the vehicle is in motion by pressing and holding the Start/
Stop button for about three seconds. This func- tion operates independently of the ECO start/
stop automatic engine switch-off function. 160
ParkingDriving and parking