2016 MERCEDES-BENZ C-CLASS CABRIOLET key

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

Setting the volume:
X Press button :.
If you select the loudest setting, indicator
lamp ;lights up.
You can also adjust the position of the exhaust
flap using the: R DYNAMIC SELECT switch (Y page 141)
R Mercedes-AMG vehicles: multimedia sys-
tem Problems with the engine
Problem
Possible causes/consequences and
M MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivate the HOLD function (Y page 179) or DISTRONIC PLUS
(Y page 171).
X Start the engine again (Y page 134).The engine does not
start. The starter motor
can be heard. R
The engine electronics are malfunctioning.
R The fuel supply is malfunctioning.
Before attempting to restart the engine:
X Turn the key back to position uin the ignition lock.
or X Press the Start/Stop button repeatedly until all indicator lamps on
the instrument cluster go out.
X Start the engine again (Y page 134). Avoid excessively long and
frequent attempts to start the engine, as this will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display is at the
reserve level. The fuel tank is empty.
X Refuel the vehicle. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 333).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. 140
DrivingDriving and parking

When engaging transmission position
Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate. 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. DIRECT SELECT lever
Overview of transmission positions j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
The DIRECT SELECT lever is on the right of the
steering column.
The DIRECT SELECT lever always returns to its
original position. The current transmission posi-
tion P,R, Nor Dappears on the transmission
position readout on the multifunction display
(Y page 146).
Engaging park position P !
If the engine speed is too high, do not shift
the automatic transmission directly from Dto
R, from Rto Dor directly to P. Otherwise, the
automatic transmission could be damaged. X
Push the DIRECT SELECT lever in the direction
of arrow P.
Engaging park position P automatically 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
Under certain conditions, the automatic trans-
mission shifts automatically to transmission
position Pif the HOLD function or DISTRONIC
PLUS is activated. Observe the information on
the HOLD function (Y page 180) and on
DISTRONIC PLUS (Y page 175).
Engaging reverse gear R !
Only shift the automatic transmission to
R
when the vehicle is stationary.
X Depress the brake pedal.
X Push the DIRECT SELECT lever up past the
first point of resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further informa-
tion on the ECO start/stop function
(Y page 137).
Engaging neutral N G
WARNING
If children are left unsupervised in the vehicle, they can:
R open doors and endanger other persons or
road users
R climb out and be injured by the traffic
R operate vehicle equipment and, for exam-
ple, trap themselves. Automatic transmission
145Driving and parking
Z

Children could also set the vehicle in motion,
for example by:
R releasing the parking brake
R shifting the automatic transmission out of
park position P
R starting the engine.
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
keep the key out of reach of children.
X If the transmission is in position Dor R: push
the DIRECT SELECT lever up or down to the
first point of resistance.
X If the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up or down to the first point of resist-
ance.
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 Engage 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. Engaging drive position D X
If the transmission is in position Ror N: push
the DIRECT SELECT lever down past the first
point of resistance.
X If the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance. Transmission position and drive pro-
gram display
The current transmission position and drive pro-
gram appear on the multifunction display. :
Status icon, drive program
; Transmission position
= Gear
The arrows in the transmission position display
show how and into which transmission positions
you can shift using the DIRECT SELECT lever.
If the transmission position display on the mul-
tifunction display is not working, you should pull away carefully to check whether the desired
transmission position is engaged. Ideally, you
should select transmission position Dand drive
program E(drive program Cin Mercedes-AMG
vehicles) or S.146
Automatic transmissionDriving and parking

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

Problems with the transmission
Problem
Possible causes/consequences and
M
MSolutions The transmission has
problems shifting gear. The transmission is losing oil.
X Have the transmission checked at a qualified specialist workshop
immediately. The acceleration charac-
teristics are deteriorat-
ing.
The transmission no lon-
ger changes gear. The transmission is in emergency mode.
It is possible to shift only into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist workshop
immediately. Transfer case
This section only applies to vehicles with all-
wheel drive (4MATIC). The front and rear axles
are constantly driven.
! Performance tests may only be carried out
on a two-axle roller dynamometer. Otherwise,
the braking system or the transfer case could be damaged. Contact a qualified specialist
workshop for more information on perform-
ance tests.
! Since ESP ®
engages automatically, the igni-
tion must be switched off (the key or Start/
Stop button must be in position 0or 1) if:
R the electric parking brake is being tested
using a brake dynamometer.
R the vehicle is being towed with only one
axle raised (not permitted for vehicles with
4MATIC).
The brake system could otherwise be dam-
aged.
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. G
WARNING
Fuels are poisonous and hazardous to health. There is a danger of injury.
Do not swallow fuel or let it come into contact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of the reach of chil-
dren. Refuelling
153Driving and parking
Z

To open the fuel filler flap
:
To open the fuel filler flap
; To insert the fuel filler cap
= Tyre pressure table
? Instruction label on the fuel type to be refu-
elled
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO start function
or KEYLESS ‑GO:
X Open the driver's door.
The vehicle electronics now have status 0.
This is the same as the key having been
removed. X
Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings open.
X Turn the fuel filler cap anti-clockwise and
remove it.
X Insert the fuel filler cap into the holder on the
inside of fuel filler flap ;.
X Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
X Only fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may leak out.
Vehicles with a diesel engine: the filler neck is
designed for refuelling at diesel filling pumps.
Closing the fuel filler flap X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X Close the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle. Refuelling
155Driving and parking Z

Problems with the fuel and fuel tank
Problem
Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
There is a risk of fire or explosion. X Apply the electric parking brake.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO start function or KEYLESS ‑GO:
X Open the driver's door.
The vehicle electronics now have status 0. This is the same as the
key having been removed.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The engine does not
start. The fuel tank of a vehicle with a diesel engine has been run completely
dry.
X Refuel the vehicle with at least 5 l of diesel.
X Turn the ignition on for approximately ten seconds (Y page 133).
X Start the engine continuously for a maximum of ten seconds until it
runs smoothly.
If the engine does not start: X Turn the ignition on again for a maximum of ten seconds
(Y page 133).
X Start the engine again continuously for a maximum of ten seconds
until it runs smoothly.
If the engine does not start after three attempts:
X Consult a qualified specialist workshop. The fuel filler flap cannot
be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 82). The key battery is weak or discharged.
X Unlock the vehicle using the emergency key element (Y page 83).The fuel filler flap is unlocked, but the opening mechanism is jammed.
X Consult a qualified specialist workshop. AdBlue
®
(BlueTEC vehicles only)
General notes To function properly, BlueTEC exhaust gas after-
treatment must be operated with the reducing
agent AdBlue ®
. On vehicles with a 8.5
lAdBlue ®
tank, topping
up AdBlue ®
is not part of the maintenance work.
Under normal operating conditions, a full tank of
AdBlue ®
should last until the next service due
date.
When the supply of AdBlue ®
is down to approx-
imately 3.0 l, the Refill AdBlue See
Refill AdBlue See 156
RefuellingDriving an
d parking