2018 MERCEDES-BENZ C-CLASS CABRIOLET Owner's Manual

be moved but the parking lock remains
engaged.
iUpshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake (
Ypage 146).
Hill start assist
Hill start assist helps you when pulling away
forward or in reverse on an uphill gradient. It
holds the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and to
depress it before the vehicle begins to roll.
GWARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling away on a level road or on a
downhill gradient.
Rthe transmission is in position i
Rthe electric parking brake is applied.
RESP®is malfunctioning
ECO start/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
The engine starts automatically when the driver
wants to pull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle.
Important safety notes
GWARNING
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
The ECO start/stop function is activated when-
ever you start the engine using the SmartKey or the Start/Stop button.
If the engine has been switched off automati-
cally by the ECO start/stop function, the è
ECO symbol is shown in the multifunction dis-
play.
Mercedes-AMG C 63 and Mercedes-AMG
C 63 S: the ECO start/stop function is auto-
matically switched on only in drive program C.
Mercedes-AMG C 43 4MATIC: the ECO start/
stop function is automatically switched on only
in drive programs S,Cand E.
Automatic engine switch-off
If the vehicle is braked to a standstill with the
transmission in hori, the ECO start/stop
function switches off the engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green
Rthe outside temperature and the atmospheric
air pressure is within the range that is suitable
for the system
Rthe engine is at normal operating temperature
Rthe set temperature for the vehicle interior
has been reached
Driving127
Driving and parking
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Rthe battery is sufficiently charged
Rthe system detects that the windshield is not
fogged up when the air-conditioning system isswitched on
Rthe hood is closed
Rthe driver's door is closed and the driver's
seat belt is fastened
All of the vehicle's systems remain active when
the engine is stopped automatically.
The HOLD function can also 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.
Mercedes-AMG C 63 and Mercedes-
AMG C 63 S: the number of consecutive auto-
matic engine switch-offs is unlimited.
All other models: automatic engine switch-off
can take place a maximum of four times in a row
(initial switch-off, then three subsequent switch-
offs).
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function by pressing the ECO button
RMercedes-AMG vehicles: you permanently
activate manual gearshifting (Ypage 138)
Rin transmission position hori, the brake
pedal is released and the HOLD function is not
active
Ryou depress the accelerator pedal
Ryou engage reverse gear k
Ryou move the transmission out of position j
Ryou unfasten your seat belt or open the driv-
er's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe condition of charge of the battery is too
low
Shifting the transmission to position jdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
Mercedes-AMG vehicles
XTo deactivate: press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi- cle stops.
The ECO start/stop function is deactivated, if:
RMercedes-AMG C 63 and Mercedes-AMG
C 63 S: you switch to drive program RACE
(S‑ MODEL), S+orS(
Ypage 130)
RMercedes-AMG C 43 4MATIC: you switch to
drive program S+(Ypage 130)
Ryou permanently activate manual gearshifting
(Ypage 138)
If you have permanently activated manual gear-
shifting and then press ECO button :, the ECO
start/stop function is activated.
All other models
128Driving
Dr iving an d parking

XTo deactivate:press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi- cle stops.
Selecting drive program S+deactivates the ECO
start/stop function. If you press ECO button :,
the ECO start/stop function is activated.
AMG performance adjustable exhaust
system (Mercedes-AMG vehicles)
The volume of the AMG Performance adjustable
exhaust system changes depending on the posi-
tion of the switchable exhaust flap. The exhaust
flap is adjusted automatically according to the
selected drive program (
Ypage 130).
You can also adjust the position of the exhaust
flap and therefore the volume of the exhaust
system manually.
The automatic adjustment of the exhaust flap is
always active when you change drive program,
regardless of the manual setting. Each time you start the engine with the Smart-
Key or the Start/Stop button, the quietest set-
ting is activated.
Setting the volume:
XPress button
:.
If you select the loudest setting, indicator
lamp lights up ;.
Mercedes-AMG C 63/C 63 S: you can preset
the volume of the exhaust system for drive pro-
gram I(Individual). Information on DYNAMIC
SELECT and on configuring drive program Iwith
the multimedia system (see the Digital Opera-
tor's Manual).
Problems with the engine
ProblemPossible causes/consequences and MSolutions
The engine does not
start.The HOLD function or Distance Pilot DISTRONIC is activated.
XDeactivate the HOLD function (Ypage 162) or Distance Pilot
DISTRONIC (Ypage 158).
XTry to start the engine again (Ypage 125).
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position uin the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
XTry to start the engine again (Ypage 125). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
Driving129
Driving an d parking
Z

ProblemPossible causes/consequences andMSolutions
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.
XRefuel 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.
XJump-start the vehicle (Ypage 304).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XTry to start the engine again (Ypage 125).
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
display is pointing to the
red mark.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 284). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT switch
Mercedes-AMG vehicles
General information
Use the DYNAMIC SELECT switch to select the
drive program. Available drive programs for Mercedes-
AMG C 43 4MATIC:
S+
Sport PlusParticularly sporty driving
characteristics
SSportSporty driving characteris-
tics
C ComfortComfortable and economi-
cal driving characteristics
EEconomyParticularly economical
driving characteristics
IIndividualIndividual settings
130DYNAMIC SELECT switch
Driving and parking

Available drive programs for Mercedes-
AMG C63/C 63 S:
RACE
(S‑MODEL)Dr ivin g characteristics suit-
able for a race circuit
S+Spo rt PlusParticular lysporty driving
characteristics
S Spo rtSportydriv ing characteris-
tics
C ComfortComfort ableand economi-
cal driv ing characteristics
IIndivi dualIndividual settings
Dependin g on thedrive program selected the
foll owin g veh iclecharacteristics willchange:
Rthedrive (engine and transmission manage-
ment)
Rthe suspension
Rthe steering
Rthe driver assistance systems
RESP®(Mercedes-AMG C 63 /C63S)
Rthe position of the exhaust flap (Mercedes-
AMG C 63 /C63S)
Rthe setting of the ECO start /stop function
Rthe availab ility of glidin g mode
Rtheclim ate control:
Further information for automat ic drive program
characteristics (
Ypage 136).
Ad ditionally, in drive program Iyou can config-
ure the respective veh iclecharacteristics using
the multimedia system. You can find informa-
tion about th isunder "DYNAM IC SELECT" inthe
veh icle's Digital Operator's Manual.
Each time you start the engine with the Smart-
Key or the Start /S top button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 125).
Selecting the drive program
XPush DYNAMIC SELECT swit ch: forwards
or back until the desired drive program is
selected.
The status icon of the selected drive program
is shown in the multifunction display.
In addition, the current drive program settings
are displayed briefly in the multimedia system display.
You can also change gear yourself using the
steering wheel paddle shifters. For further infor-
mation on the manual drive program
(
Ypage 138).
Additional settings
:Position of the exhaust flap (Ypage 129)
;ECO start/stop function (Ypage 127)
=ESP®(Ypage 67)
?Suspension (Ypage 164)
APermanently activates manual gearshifting
(Ypage 138)
When you press buttons :-A the corre-
sponding setting is selected. The DYNAM IC
SE LECT swit ch setting is overwritten.
If you switch to drive program I, all stored char-
acteristics will be accepted. This isalso the case
DYNAMIC SELECT switch131
Driving and parking
Z

if you have previously pressed one of buttons:
- A.
iMercedes-AMG C 43 4MATIC In a few
countries, the ECO start/stop function is
deactivated at the factory due to the fuel
grade available. In this case, the ECO start/
stop function is not available in any drive pro-
gram, regardless of the display in the multi-
media system display.
All other models
Use the DYNAMIC SELECT switch to change the
drive program.
Depending on the drive program selected the
following vehicle characteristics will change:
Rthe drive (engine and transmission manage-
ment)
Rthe suspension
Rthe steering
Rthe ECO start/stop function
Rthe climate control:
-the climate control settings
-the rear window defroster operation period
-the performance of the seat heating
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 125).
XPush DYNAMIC SELECT switch :forward or
back until the desired drive program is selec-
ted.
The status icon of the selected drive program
is shown in the multifunction display. In addition, the current drive program settings
are displayed briefly in the multimedia system
display.
iIn a few countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade. In this case, the ECO
start/stop function is not available in any
drive program, regardless of the display in the
multimedia system display.
Available drive programs:
I IndividualIndividual settings
S+ Sport PlusParticularly sporty driving
characteristics
SSportSporty driving characteris-
tics
C ComfortComfortable and economi-
cal driving characteristics
EEconomyParticularly economical
driving characteristics
Additional information for drive programs
(Ypage 136).
You can also change gear yourself using the
steering wheel paddle shifters. For further infor- mation on the manual drive program
(
Ypage 138).
Automatic transmission
Important safety notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
GWARNING
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.
132Automatic transmission
Driving and parking

After switching off the engine, always switch
to parking positionP. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
DIRECT SELECT lever
Overview of transmission positions
jPark position with parking lock
kReverse gear
iNeutral
hDrive
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 j,k,iorh is shown on the trans-
mission position display on the multifunction
display (
Ypage 134).
Selects park position
!If the engine speed is too high or the vehicle
is coasting, do not shift the automatic trans-
mission directly from htok, from ktoh
or directly to j. Otherwise, the automatic
transmission may be damaged.
XPush the DIRECT SELECT lever switch in the
direction of arrow j.
Engaging park position automatically
Park positionjis automatically engaged if:
Ryou switch off the engine using the SmartKey
and remove the SmartKey
Ryou switch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Ryou open the driver's door when the vehicle is
stationary or when driving at a very low speed
and the transmission is in position hork
Under certain conditions, the automatic trans-
mission shifts to transmission position jauto-
matically if the HOLD function or Distance Pilot
DISTRONIC is activated. Observe the informa-
tion on the HOLD function (
Ypage 162) and
Distance Pilot DISTRONIC (Ypage 156).
Engaging reverse gear
!Only move the automatic transmission to
k when the vehicle is stationary.
XDepress the brake pedal.
XPush 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
(
Ypage 127).
Engaging neutral
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
Automatic transmission133
Driving an d parking
Z

leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
XIf the transmission is in positionhork:
push the DIRECT SELECT lever up or down to
the first point of resistance.
XIf the transmission is in position j: 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 korh, the automatic trans-
mission shifts to iautomatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove the SmartKey from the ignition lock, the auto-
matic transmission shifts to jautomatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to jauto-
matically.
If you want the automatic transmission to
remain in neutral i, e.g. when having the vehi-
cle cleaned in an automatic, tow-through car
wash:
XVehicles with KEYLESS-GO or KEYLESS-
GO start function: remove the Start/Stop
button from the ignition lock.
XInsert the SmartKey into the ignition lock.
XAll vehicles: switch the ignition on.
XDepress the brake pedal and keep it
depressed.
XEngage neutral i.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Engaging the drive position
XIf the transmission is in position kori:
push the DIRECT SELECT lever down past the first point of resistance.
XIf the transmission is in position j: 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 in the multifunction display.
:Status symbol 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 in 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 hand
drive program E(for Mercedes-AMG vehicles:
drive program C) orS.
134Automatic transmission
Driving and parking