2012 MERCEDES-BENZ E-Class CABRIOLET octane

O
Occupant Classification System
(OCS) Faults ............................................... 47
Operation ......................................... 43
System self-test ............................... 46
Occupant safety
Children in the vehicle .....................55
System overview .............................. 36
Octane number (fuel) ........................ 343
Odometer ........................................... 201
see Trip odometer
Oil
see Engine oil
On-board computer
Assistance menu ........................... 206
Audio menu ................................... 203
Convenience submenu ..................211
Displaying a service message ........279
Display messages ..........................213
DISTRONIC PLUS ........................... 172
Factory settings submenu .............212
Important safety notes ..................196
Instrument cluster submenu ..........208
Lighting submenu .......................... 209
Menu overview .............................. 200
Message memory .......................... 213
Navigation menu ............................ 202
Operating video DVD .....................204
Operation ....................................... 197
Service menu ................................. 208
Settings menu ............................... 208
Standard display ............................ 201
Telephone menu ............................ 204
Trip menu ...................................... 201
Vehicle submenu ........................... 210
Operating system
see On-board computer
Outside temperature display ........... 197
Overhead control panel ...................... 32
Override feature Rear side windows ...........................59
P
Paint code number ............................ 339
Paintwork (cleaning instructions) ... 281
Panic alarm .......................................... 60
Panorama roof with power tilt/
sliding panel Opening/closing .............................. 98
Opening/closing the roller
sunblind ........................................... 99
Problem (malfunction) .....................99
Resetting ......................................... 99
Panorama sliding sunroof
Important safety notes ....................97
Parcel net ........................................... 253
Parking ............................................... 158
Important safety notes ..................158
Parking brake ................................ 159
Position of exterior mirror, front-
passenger side ............................... 112
Rear view camera .......................... 184
see PARKTRONIC
Parking aid
Parking Guidance ........................... 181
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 215
Notes/function .............................. 159
Parking Guidance
Display message ............................ 230
Important safety notes ..................181
Parking lamps (changing bulbs) ...... 125
PARKTRONIC Deactivating/activating .................180
Driving system ............................... 178
Function/notes ............................. 178
Problem (malfunction) ...................181
Range of the sensors .....................178
Warning display ............................. 179
PASSENGER AIRBAG OFF indicator
lamp ...................................................... 43
Pedals ................................................. 160
Plastic trim (cleaning instructions) . 285
Power washers .................................. 281
Power windows see Side windows
PRE-SAFE ®
(Preventive occupant
safety system) Display message ............................ 217
Operation ......................................... 48Index13

If you bought this vehicle used, be sure to
send in the "Notice of Purchase of Used Car"
found in the Service and Warranty
Information Booklet, or call the Mercedes-
Benz Customer Assistance Center (in the
USA) at
1-800-FOR-MERCedes(1-800-367-6372) or
Customer Service (in Canada) at
1-800-387-0100.
Vehicle operation outside the USA
and Canada
If you plan to operate your vehicle in foreign
countries, please be aware that:
R service facilities or replacement parts may
not be readily available.
R unleaded fuel for vehicles with a catalytic
converter may not be available. Leaded fuel
may cause damage to the catalytic
converter.
R the fuel may have a considerably lower
octane rating. Unsuitable fuel can cause
engine damage.
Some Mercedes-Benz models are available
for delivery in Europe through our European
Delivery Program. For details, consult an
authorized Mercedes-Benz Center or write to
one of the following addresses.
In the USA
Mercedes-Benz USA, LLC
European Delivery Department
One Mercedes Drive
Montvale, NJ 07645-0350
In Canada
Mercedes-Benz Canada, Inc.
European Delivery Department
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9
Operating safety
Safety notes
GWARNING
Work improperly carried out on electronic
components and associated software could
cause them to cease functioning. Because the
vehicle's electronic components are
interconnected, any modifications made may
produce an undesired effect on other
systems. Electronic malfunctions could
seriously impair the operating safety of your
vehicle.
Contact an authorized Mercedes-Benz Center
for repairs or modifications to electronic
components.
Other improper work or modifications on the
vehicle could also have a negative impact on
the operating safety of the vehicle.
Some safety systems only function when the
engine is running. You should therefore never
turn off the engine while driving.
GWARNING
Heavy blows against the vehicle underbody or
tires/wheels may cause serious damage and
impair the operating safety of your vehicle.
Such blows can be caused, for example, by
running over an obstacle, road debris or a
pothole.
If you feel a sudden significant vibration or
ride disturbance, or you suspect that damage
to your vehicle has occurred:
R turn on your hazard warning flashers.
R slow down carefully.
R drive with caution to an area which is a safe
distance from the road.
Inspect the vehicle underbody and tires/
wheels for possible damage. If the vehicle
appears unsafe, have it towed to the nearest
authorized Mercedes-Benz Center or other
qualified maintenance or repair facility for
further inspection or repairs.
22Introduction

Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.GWARNING
Overfilling of the fuel tank may create
pressure in the system which could cause a
gas discharge. This could cause the gasoline
to spray back out when removing the fuel
pump nozzle, which could cause personal
injury.
! Do not use diesel to refuel vehicles with a
gasoline engine. Even small amounts of the
wrong fuel result in damage to the fuel
system and engine.
! Do not switch on the ignition if you
accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel lines.
Notify a qualified specialist workshop and
have the fuel tank and fuel lines drained
completely.
Gasoline
Fuel grade
! You should only refuel with unleaded
premium-grade gasoline as this avoids
damaging the catalytic converter.
If engine running problems are apparent,
have the cause checked immediately and
repaired. Excess unburned fuel can
otherwise enter the catalytic converter,
leading to overheating and possibly
causing a fire.
! Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
i Only refuel with premium-grade unleaded
gasoline with a specified minimum octane
number of 91 (average value of 96 RON/
86 MON).
You will usually find information about the
fuel grade on the pump. If you cannot find
the label on the pump, ask the staff for
assistance.
You can find more information under "Fuel"
( Y page 342), or by contacting an
authorized Mercedes-Benz Service Center
or visiting http://www.mbusa.com (USA
only).
Refueling
Fuel filler flap
The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with the SmartKey or using KEYLESS-
GO.
The position of the fuel filler cap is displayed
in the instrument cluster 8. The arrow
next to the filling pump indicates the side of
the vehicle.
Example: Coupe
:To open the fuel filler flap;To insert the fuel filler cap=Tire pressure table?Fuel type156RefuelingDriving and parking

CapacitiesModelCapacityFuel, coolant,
lubricants, etc.Engine oil and
filterE 350 296.9 US qt (6.5 l)Approved engine
oilsE 550 299.0 US qt (8.5 l)Cooling systemE 35029Approximately 10.1 US qt
(9.6 l)MB 325.0 or
MB 326.0
anticorrosion/
antifreezeE 550 29Approximately 13.6 US qt
(12.9 l)Tank capacityAll models17.4 US gal (66.0 l)Premium-grade
unleaded gasoline
(at least 91 octane,
average value
between 96 RON/
86 MON)ReserveAll modelsApproximately 2.1 US gal
(8.0 l)Windshield/
headlamp
cleaning
systemAll models3.7 US qt (3.5 l)MB windshield
washer
concentrate 30
( Y page 346)
Mixing ratio for
washer fluid
( Y page 346)Fuel
Important safety notesGWARNING
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline.
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.
Premium-grade unleaded gasoline
! To ensure the longevity and full
performance of the engine, only premium-
grade unleaded gasoline may be used.
If there is no premium-grade unleaded
gasoline available and regular-grade
unleaded gasoline may be used; please
observe the following precautions:
R only fill the fuel tank to half full with
regular-grade unleaded gasoline and fill
29 BlueEFFICIENCY
30 Mixed with water or premixed washer fluid with antifreeze protection.342Service products and capacitiesTechnical data

the rest with premium-grade unleaded
gasoline as soon as possible.
R do not drive at the maximum speed.
R avoid sudden acceleration.
R if the vehicle is carrying a light load, e.g.
two passengers without luggage, do not
allow the engine to rev above
3,000 rpm.
R if the vehicle is fully loaded or is being
operated in mountainous terrain, do not
depress the accelerator pedal further
than Ô of the pedal travel.
Fuel requirements
Use only premium-grade unleaded gasoline.
The octane number should be at least 91.
Details can be found on the gas pump. The
octane number is the average value of the
Research Octane Number (RON) and the
Motor Octane Number (MON): (RON +
MON) / 2, also known as knock resistance.
Reformulated Gasoline (RFG) and/or
unleaded gasoline with additives can be used
if the concentration of the additives in the fuel
does not exceed 10%, e.g.:
R Ethanol
R TAME
R ETBE
R IPA
R TBA
For MTBE, the concentration should not
exceed 15%.
The concentration of methanol in gasoline
including other additives must not exceed 3%.
Using mixtures of methanol and ethanol is not
permitted. Gasohol, a mixture of 10% ethanol
and 90% unleaded gasoline, can be used.
All of these mix fuels must fulfill the fuel
requirements, e.g.:
R knock resistance
R boiling point
R vapor pressure
Additives in gasoline
One of the main problems of poor fuel quality
is the forming of deposits that are caused
during the gasoline combustion process.
Mercedes-Benz recommends that you use
fuel brands that have the additives.
If you use fuels without these additives for an
extended period of time, there may be a
buildup of carbon deposits, especially on the
inlet valves and in the combustion chamber.
This could lead to engine problems, e.g.:
R longer engine warm-up phase
R uneven idle
R engine noise
R misfiring
R loss of power
Carbon deposits may form if the availability
of gasoline with relevant additives is
insufficient (in certain regions). In this case,
Mercedes-Benz recommends the use of
additives that have been approved for
Mercedes-Benz vehicles.
Consult an authorized Mercedes-Benz Center
or go to the Internet site
http://www.mbusa.com (USA only) for a list
of approved products. Observe the
instructions for use on the product label.
Do not mix other fuel additives with fuel. This
causes unnecessary costs and could damage
the engine.
! Do not refuel with low-grade fuel and do
not use fuel additives that are not tested
and approved for Mercedes-Benz vehicles.
Damage to or malfunctions of the fuel
system may otherwise occur.
Engine oil
Please bear the following in mind
The engine oils are matched to the
performance of Mercedes-Benz engines and
service intervals. You should therefore only
use engine oils and oil filters that are
Service products and capacities343Technical dataZ