fuel consumption MERCEDES-BENZ E-CLASS CABRIOLET 2012 Owners Manual

Emergency spare wheel
Important safety note s.................. 363
Points to remember .......................363
Storage location ............................ 363
Technical data ............................... 364
Emergency unlocking
Vehicle ............................................. 84
Engine
Display message ............................ 259
ECO start/stop function ................162
Engine number ............................... 371
Jump-starting ................................. 331
Running irregularl y......................... 165
Starting problems ..........................165
Starting the engine with the key ....160
Starting with KEYLESS GO .............161
Stopping ........................................ 178
Tow-starting (vehicle) ..................... 335
Warning lamp (engine diagnos-
tics) ............................................... 280
Engine electronics
Notes ............................................. 369
Problem (fault) ............................... 165
Engine oil
Additives ........................................ 376
Checking the oil level ..................... 308
Checking the oil level using the
dipstick .......................................... 309
Display message ............................ 261
Filling capacity ............................... 376
Notes about oil grades ................... 375
Notes on oil level/consumption ....308
Topping up ..................................... 309
Viscosity ........................................ 376
Environmental protection
Returning an end-of-life vehicle .......21
ESP ®
(Electronic Stability Pro-
gram) Deactivating/activating .................240
Deactivating/activating (notes) .......67
Display message ............................ 250
ETS .................................................. 67
Function/notes ................................ 67
Important safety guidelines .............67
Trailer stabilisatio n.......................... 68
Warning lamp ................................. 278
ETS (Electronic Traction System) ....... 67Exhaus
ttail pipe (cleaning instruc-
tions) .................................................. 317
Exterior lighting Settings options ............................ .122
see Lights
Exterior mirrors
Adjusting ....................................... 117
Anti-dazzle mode (automatic) ........119
Folding in/ou t(automatically) .......118
Folding in/ou t(electrically) ...........118
Folding in whe nlocking (on-board
computer) ...................................... 247
Out of position (troubleshooting) ...118
Parking position ............................. 119
Resetting ....................................... 118
Storing settings (memory func-
tion) ............................................... 120 F
Faul tmessage
see Display messages
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 323
First-aid kit ......................................... 322
Fitting awheel
Removing awheel .......................... 349
Fitting wheels
Fitting awheel ............................... 349
Lowering the vehicle ......................350
Raising the vehicle .........................348
Securing the vehicle against roll-
ing away ........................................ 347
Flat tyre
MOExtended tyres .........................324
Preparing the vehicle .....................324
TIREFIT kit ...................................... 325
Floormat ............................................ .303
Foglamps Extended range .............................. 129
Switching on/off ........................... 124
Frequencies
Garage door opene r....................... 299
Mobile phone ................................. 369
Two-way radio ................................ 369
Front foglamps
Display message ............................ 25710
Index

Fuel
Additives ........................................ 373
Consumptio ninformation ..............374
Consumption statistics ..................233
Displaying the current consump-
tion ................................................ 234
Displaying the range ......................234
Fuel gauge ............................... 30, 229
Grade (petrol) ................................ 372
Important safety notes ..................372
Problem (malfunction) ...................176
Quality (diesel )............................... 373
Refuelling ...................................... .173
Tank content/reserve fuel .............372
Fuel filler flap
Opening/closing ............................ 174
Fuel filte r(white display message) .262
Fuel level Calling up the range (on-board
computer) ...................................... 234
Gauge ...................................... 30, 229
Fuel reserve
see Fuel
Fuel tank
Capacity ........................................ 372
Problem (malfunction) ...................176
Fuse allocation chart (vehicle tool
kit) ...................................................... 323
Fuses Allocation chart ............................. 336
Before changing ............................. 336
Dashboard fuse box .......................336
Fuse box in the boot ......................337
Fuse box in the engine compart-
ment .............................................. 337
Important safety notes ..................336 G
Garage door opener Clearing the memory .....................299
Frequencies ................................... 299
Important safety notes ..................297
Opening/closing the garage door ..299
Programming (button in the rear-
view mirror) ................................... 297
Genuine Mercedes-Benz parts .........368
Glove compartment ..........................287 H
Handbrake see Parking brake
Hazard warning lamps ......................127
Headbag Display message ............................ 255
Operation ........................................ .46
Headlamp
Cleaning system (function) ............128
Cleaning system (notes) ................377
Headlamps
Misting up ...................................... 131
Topping up the cleaning system ....310
see Automatic headlamp mode
Head level heating (AIRSCARF) ........115
Head restraint Lowering manually (rear) ...............111
Head restraints
Adjusting ....................................... 111
Adjusting (electrically). ..................111
Adjusting (manually). .....................111
Adjusting (rear) .............................. 111
see NECK-PR Ohead restraints
Heating
see Climate control
High-pressure cleaners ....................313
Hill start assist .................................. 162
HOLD function Display message ............................ 263
Function/notes ............................. 198 I
Ignition lock see Key positions
Immobiliser .......................................... 71
Indicator and warning lamps Coolant .......................................... 281
DISTRONI CPLUS ........................... 283
Engine diagnostics .........................280
Indicator lamps
Display message ............................ 256
see Warning and indicator lamps
Insectp rotection on the radiator ....308
Inspection see ASSYST PLUS Index
11

Protection of the environment
General notes
H
Environmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
which form the basis of our existence on this
planet to be used sparingly and in a manner
which takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally-responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tyre wear depend on
the following factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
R avoid short trips as these increase fuel con-
sumption.
R make sure that the tyre pressures are
always correct.
R do not carry any unnecessary weight.
R keep an eye on the vehicle's fuel consump-
tion.
R remove roof racks once you no longer need
them.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R always have service work carried out at a
qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine with the vehicle
stationary.
R drive carefully and maintain a safe distance
from the vehicle in front. R
avoid frequent, sudden acceleration.
R change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic. Returning an end-of-life vehicle
Mercedes-Benz will take back your
Mercedes-Benz to dispose of it in an environ-
mentally responsible manner, in accordance
the European Union (EU) End of Life Vehicles
Directive.
The End of Life Vehicles Directive applies to
vehicles with a gross vehicle weight of up to
3.5 t, in accordance with national regulations.
For several years, Mercedes-Benz has been
meeting all the legal requirements for a
design which allows for recycling and re-use.
There is a network of return points and dis-
assembly plants which can recycle your vehi-
cle in an environmentally-responsible man-
ner. The methods employed in vehicle and
parts recycling are constantly being devel-
oped and improved. This means that your
Mercedes-Benz will also continue to meet
even the increased recycling quotas in the
future in good time. You can obtain further
information from your national Mercedes-
Benz homepage or your national hotline num-
ber. Product information
Mercedes-Benz recommends that you use
genuine Mercedes-Benz parts, conversion
parts and accessories that have been
approved for the type of vehicle.
Mercedes-Benz tests genuine parts and con-
version parts and accessories that have been
specifically approved for your vehicle for their
reliability, safety and suitability. Despite
ongoing market research, Mercedes-Benz is
unable to assess other parts. Therefore,
Mercedes-Benz accepts no responsibility for
the use of such parts in Mercedes-Benz vehi- Introduction
21 Z

The program selector button allows you to
choose between different driving character-
istics. E
Economy Comfortable, economical
driving
S
Sport Sporty driving style
M
Manual Manual gearshifting
i
For further information on the automatic
drive program, see (Y page 170).
i The automatic transmission switches to
automatic drive program Eeach time the
engine is started. Steering wheel gearshift paddles
:
Left-hand steering wheel gearshift paddle
; Right-hand steering wheel gearshift pad-
dle
In the automatic drive program, you can
restrict or derestrict the shift range by using
the steering wheel gearshift paddles or the
selector lever (Y page 170).
In the manual drive program, you can change
gear using the steering wheel gearshift pad-
dles or the selector lever (Y page 171).
i You can only change gear with the steer-
ing wheel gearshift paddles when the trans-
mission is in position D. Automatic drive program
Drive program Eis characterised by the fol-
lowing:
R comfort-oriented engine settings
R optimal fuel consumption resulting from
the automatic transmission shifting up
sooner
R the vehicle pulling away more gently in
forward and reverse gears, unless the
accelerator pedal is depressed fully
R increased sensitivity. This improves driving
stability on slippery road surfaces, for
example
R the automatic transmission shifting up
sooner. This results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin
Drive program Sis characterised by the fol-
lowing:
R sporty engine settings
R the vehicle pulling away in first gear
R the automatic transmission shifting up
later
R as a result of the later automatic transmis-
sion shift points, the fuel consumption pos-
sibly being higher Shift ranges
Introduction When the automatic transmission is in posi-
tion
D, it is possible to restrict or derestrict
the shift range (Y page 170).
The shift range selected is shown in the mul-
tifunction display .The automatic transmis-
sion shifts only as far as the selected gear. 170
Automatic transmissionDriving and parking

Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged
by exhaustive discharging.
If you leave the vehicle parked up for longer
than six weeks, the vehicle may suffer dam-
age as a result of lack of use.
X Visit a qualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop. Driving tips
General notes
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,
for example, the power steering and the brake
boosting effect.Y ou will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. ECO display
ECO display (example)
The ECO display gives you information on how
economical your driving style is. The ECO dis-
play assists you in achieving the optimum
driving style in terms of consumption, taking
the actual and selected conditions into con-
sideration. Your driving style can significantly
influence the vehicle's consumption. The ECO display consists of three bars:
R
Acceleration
R Constant
R Coasting
The percent value is the average value of the
three bars. The three bars and the average
value commence with a value of 50%. Ahigher
percentage indicates a mor eeconomical driv-
ing style.
The ECO display provides no information on
the actual fuel consumption. Afixed percent-
age value of the ECO display does not corre-
spond to a fixed consumption figure in
l/100km.
Apart from driving style, consumption is
dependent on many factors such as:
R load
R tyre pressure
R cold start
R selected route
R number of consumers that are switched on
These variable are not included in the ECO
display.
Your driving style is evaluated on the basis of
the following three categories:
Acceleration (evaluation of all accelera-
tion processes) The bar fills up: The bar depletes:
Moderate accelera-
tion, espeically at
higher speeds Sporty acceleration
Constant (evaluation of the driving style
at any point in time)
The bar fills up: The bar depletes:
Constan
tspeed and
avoidance of unnec-
essary acceleration
and deceleration
processes Fluctuations in
speed Driving tips
179Driving and parking Z

Menu bar
;disappears after a few seconds.
Text field :shows the selected menu or
submenu as well as display messages.
The following messages can appearint he
multifunction display:
Z Shift recommendation
(Ypage 167)
XjY Parking Guidance (Y page 203)
¯ Cruise control (Y page 182)
È SPEEDTRONIC (Y page 185)
_ Adaptive Highbeam Assist
(Ypage 130)
À ATTENTION ASSIST
(Ypage 208)
¤ ECO start/stop function
(Ypage 162)
Ä Speed Limit Assist
(Ypage 209)
à Lane Keeping Assist
(Ypage 212)
à Active Lane Keeping Assist
(Ypage 217)
ë HOLD function (Y page 198)
Ä PRE-SAFE®
Brake (Y page 69)
120 km/h! Maximum permissible speed
exceeded (only for certain coun-
tries)
Menus and submenus
Menu overview
Press the =or; button on the steer-
ing wheel to call up the menu bar and select
a menu.
Operating the on-board computer
(Y page 231).
Depending on the equipment fitted in the
vehicle, you can call up the following menus:
R Trip menu (Y
page 233)
R Navi menu (navigation instructions)
(Y page 235)
R Audio menu (Y
page 236) R
Tel menu (telephone) (Y
page 238)
R Assist. menu (assistance) (Y
page 239)
R Serv. menu (Y
page 241)
R Settings menu (Y
page 242)
The Audio ,
Navi and
Tel menus differ slightly
in vehicles with an audio system and in vehi-
cles with COMAND Online. The examples
given in this Owner's Manual apply to vehicles
equipped with COMAND Online. Trip menu
Standard display X
Press and hold the %button on the
steering wheel until the Trip menu with
trip meter :and total distance
recorder ;is shown.
Trip computer "From start" or "From
reset" Example: "From start" trip computer
:
Distance
; Time
= Average speed
? Average fuel consumption
X Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select
From start or
From reset .Menus and submenus
233On-board computer and displays Z

The values in the
From start submenu are
calculated from the start of a journey, whilst
the values in the From reset submenu are
calculated from the last time the submenu
was reset (Y page 234).
The From start trip computer is automati-
cally reset if:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 kilometres have been exceeded.
The From reset trip computer is automati-
cally reset if the value exceeds 9,999 hours
or 99,999 kilometres.
ECO display Example: ECO display
X Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select the
ECO DISPLAY .
When the ignition is switched off for more
than four hours, the ECO display is automat-
ically reset.
For further information on the ECO display,
see (Y page 179).
Displaying the range and current fuel
consumption X
Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select the
curren tfuel consumption and approximate
range.
The approximate range which can be covered
depends on the fuel level and your current
driving style. If there is only a small amount
of fuel left in the fuel tank, the display shows
a vehicle being refuelled Cinstead of the
range.
Digital speedometer :
Shift recommendation (Y page 167)
; Digital speedometer
X Press the =or; buttononthe steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select the
digital speedometer.
i If the gearshift recommendation is shown
in the multifunction display, it is not shown
in the status bar.
Resetting values Example: resetting the trip computer "From start"
X
Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select the
function that you wish to reset. 234
Menus and submenusOn-board computer and displays

These are specially adapted to the control
systems, such as ABS or ESP ®
and are
marked as follows:
R MO =Mercedes-Benz Original
R MOE =Mercedes-BenzO riginal Extended
(tyres featuring run-flat characteristics)
R MO1 =Mercedes-Benz Original (only cer-
tain AMG tyres)
Mercedes-BenzO riginal Extended tyres
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tyres, wheels or accessories tes-
ted and approved by Mercedes-Benz. Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with aload, tyre dimen-
sion variations could cause the tyres to
come into contact with the bodywork and
axle components.T his could result in dam-
age to the tyres or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tyres,
wheels or accessories othe rthan those tes-
ted and approved.
Further information about wheels, tyres
and approved combinations can be
obtained from any qualified specialist
workshop.
! Retreaded tyres are neither tested nor
recommended by Mercedes-Benz, since
previous damage cannot always be detec-
ted on retreaded tyres. As a result,
Mercedes-Ben zcannot guarantee vehicle
safety if retreaded tyres are fitted. Do not
fit used tyres if you have no information
about their previous usage.
! Large wheels :the lower the section width
for a certain wheel size, the lower the ride
comfort is on poor road surfaces. Roll com-
fort and suspension comfort are reduced
and the risk of damage to the wheels and
tyres as a result of driving over obstacles
increases. Overview of abbreviations used in the follow-
ing tyre tables:
R
BA: both axles
R FA: front axle
R RA: rear axle
You will find a table with recommended tyre
pressures for various operating conditions on
the inside of your vehicle's fuel filler flap. For
further information on tyre pressure, see
(Y page 343). Check tyre pressures regularly
and only when the tyres are cold.
Notes on the vehicle equipment –always fit
the vehicle:
R with tyres of the same size on a given axle
(left/right)
R with the same type of tyres at a given time
(summer tyres, winter tyres, MOExtended
tyres)
Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory. It
is therefore recommended that you addition-
ally equip your vehicle with a TIREFIT kit if you
fit tyres that do not feature run-flat charac-
teristics, e.g. winter tyres. A TIREFIT kit can
be obtained fro maqualified specialist work-
shop.
i Not all wheel/tyre combinations can be
mounted at the factory in all countries. Wheel and tyre combinations
351Wheels and tyres Z

see "Additives". You can obtain further
information from any Mercedes-Benz
Service Centre.
Usually you will find information aboutt he
fuel grade on the pump. If you cannot find the
label on the petrol pump, ask the filling sta-
tion staff.
i E10 fuel contains up to 10 % bioethanol.
Your vehicle is suitable for use with E10
fuel. You can refuel your vehicle using E10
fuel.
i If the recommended fuel is not available,
but only as a temporary measure, you may
also use unleaded petrol with an octane
rating of 91 RON/82.5 MON. This may
reduce engine performance and increase
fuel consumption .Avoid driving at full
throttle.
Information on refuelling (Y page 174).
E 300 BlueEFFICIENCY and E 350 BlueEF-
FICIENCY
! Only refuel using premium-grade sulphur-
free unleaded petrol with at least 95 RON/
85 MON that conforms to European stand-
ard EN 228 or an equivalent specification.
You could otherwise impair engine output
or damage the emission control system.
i In some countries, the available petrol
may not be sufficiently low in sulphur. This
fuel can temporarily produce unpleasant
odours, especially on short journeys. As
soon as sulphur-free fuel (sulphu rcontent
<10p pm) is used for refuelling, the odours
are reduced.
Additives
! Do not refuel with low grade fuel and do
not use fuel additives that have not been
tested and approved for Mercedes-Benz
vehicles. Otherwise the fuel system could
malfunction or be damaged.
One of the major problems with low-grade
fuel is the creation of carbon deposits during
the process of burning fuel. Mercedes-Benz recommends that you use fuel brands that
have additives.
If you use fuels without these additives for a
longer period of time, there may be a build-up
of carbon deposits. These will form especially
on the inlet valves and in the combustion
chamber.
This could lead to engine running problems,
e.g.:
R
longer engine warm-up phase
R uneven idle
R engine noise
R misfiring
R loss of power
In areas where petrol with the required addi-
tives is not available, carbon deposits can
build up. In this case, Mercedes-Benz recom-
mends the use of additives that have been
approved for Mercedes-Benz vehicles; see
http://bevo.mercedes-benz.com.
The quality of the fuel available in some coun-
tries may not be sufficient .Residue could
build up as a result. In such cases, and in
consultation with a Mercedes-BenzS ervice
Centre, the petrol may be mixed with the
additive recommended by Mercedes-Benz
(part no. A000989254510). You must
observe the notes and mixing ratios specified
on the container.
Consult a Mercedes-Benz Service Centre to
view a list of approved products. Observe the
instructions for use in the product descrip-
tion.
Do not mix other fuel additives with fuel. This
causes unnecessary costs and could damage
the engine.
Diesel (EN 590) Fuel grade
G
WARNING
Do not use petrol to refuel vehicles with a die-
sel engine. Do not mix diesel with petrol. This
would result in damage to the fuel system and
engine, which could lead to a vehicle fire. Service products and capacities
373Technical data Z

!
When refuelling, only use diesel fuel that
conforms to the European standard EN 590
or is of equivalent quality. Fuel that does
not conform to EN 590 can lead to
increased wear as well as damage to the
engine and exhaust system.
! Do not use the following:
R marine diesel
R heating oil
R bio-diesel
R vegetable oil
R petrol
R paraffin
R kerosene
Do not mix such fuels with diesel fuel and
do not use any special additives. This can
otherwise lead to engine damage.T his
does not include flow improver additives.
For further information, see "Flow improv-
ers".
! Vehicles with adiesel particle filter: in
countries outside the EU, only refuel with
low-sulphur Euro diesel with a sulphur con-
ten tunde r50p pm; otherwise the emission
control system could be damaged.
! Vehicles without adiesel particle fil-
ter: in countries where only diesel fuel with
a high sulphur conten tis available, you will
need to carry out your vehicle's oil change
at shorter intervals. More information
aboutt he interval for oil change can be
obtained from any qualified specialist
workshop.
Usually you will find information about the
fuel grade on the pump. If you cannot find the
label on the petrol pump, ask the filling sta-
tion staff.
Information on refuelling (Y page 174).
Low outside temperatures
In winter months, diesel fuel with an improved
cold flow quality is available. In Europe, the
EN 590 standard defines various climate-
dependent temperature categories. Malfunc- tions can be avoided by refuelling with diesel
fuel that corresponds to the climatic specifi-
cations outlined in EN 590. At unusually low
outside temperatures, it is possible that the
flow characteristics of the diesel fuel could be
insufficient
.Accordingly, diesel fuel from
warmer areas may not be suitable for opera-
tion in colder climati cconditions.
i Further information on country-specific
fuel properties can be obtained from oil
companies, e.g. at filling stations.
Flow improvers
To improve the low-temperature resistance of
diesel fuel, a flow improver can be attached.
The effectiveness of a flow improver is not
guaranteed for every fuel.
Only use flow improvers tested and approved
by Mercedes-Benz. During use, please
observe the information on operation.
Correct dosage and sufficient mixing are deci-
sive in improving low-temperature resistance
with the flow improver. Overdosage can
potentially even decrease low-temperature
resistance and must therefore be avoided.
Follow the manufacturer's guidelines on dos-
age.
Mix the additive into the diesel in good time,
before the flow characteristics of the diesel
become insufficient. Otherwise, malfunctions
can arise through heating the fuel system,
e.g. through parking in a heated garage.
More information about recommended flow
improvers can be obtained from any qualified
specialist workshop.
Fuel consumption information H
Environmental note
CO 2(carbon dioxide) is the gas which scien-
tists believe to be principally responsible for
global warming (the greenhouse effect). Your
vehicle's CO 2emissions are directly related to
fuel consumption and therefore depend on: 374
Service products and capacitiesTechnical data