2012 MERCEDES-BENZ GL-Class fuel additives

EASY-PACK load-securing kit ........... 275
EBD (electronic brake force
distribution) Display message ............................ 235
Function/notes ................................ 71
Electrical fuses
see Fuses
Electronic Brake force Distribution
see EBD (Electronic Brake force
Distribution)
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Electronic Traction System
see 4ETS (Electronic Traction System)
Emergency release
Driver's door .................................... 85
Fuel filler flap ................................. 161
Vehicle ............................................. 85
Emergency spare wheel
Storage location ............................ 315
Emergency Tensioning Devices
Function ........................................... 59
Safety guidelines ............................. 39
Emissions purification
Service and warranty information ....21
Engine
Check Engine warning lamp ........... 264
Display message ............................ 244
Emergency starting ........................333
Engine number ............................... 370
Irregular running ............................ 153
Starting problems ..........................153
Starting the engine with the
SmartKey ....................................... 150
Starting with KEYLESS-GO .............151
Switching off .................................. 166
Engine electronics
Problem (malfunction) ...................153
Engine emergency stop .................... 335
Engine oil Adding ........................................... 302
Additives ........................................ 375
Checking the oil level ..................... 301
Display message ............................ 246
Filling capacity ............................... 371
Notes about oil grades ................... 375Notes on oil level/consumption ....301
Viscosity ........................................ 375
ESP ®
(Electronic Stability
Program) 4ETS ................................................ 70
Deactivating/activating ...................70
Display message ............................ 233
Function/notes ................................ 69
Important safety information ...........69
Trailer stabilization ........................... 71
Warning lamp ................................. 261
Exhaust check ................................... 169
Exhaust tail pipe (cleaning
instructions) ...................................... 310
Exterior lighting see Lights
Exterior mirrors
Adjusting ....................................... 112
Dipping (automatic) .......................113
Folding in/out (automatically) .......113
Folding in/out (electrically) ...........112
Folding in when locking (on-board
computer) ...................................... 228
Out of position (troubleshooting) ...113
Setting ........................................... 113
Storing settings (memory
function) ........................................ 114
Storing the parking position ..........113
F
Filler cap see Fuel filler flap
First-aid kit ......................................... 314
Flat tire Changing a wheel/mounting the
spare wheel ................................... 321
MOExtended run-flat system .........325
Preparing the vehicle .....................316
Raising the vehicle .........................322
TIREFIT kit ...................................... 317
Floormat ............................................. 297
Fording Off-road ......................................... 171
On flooded roads ........................... 171
Front fog lamp
Switching on/off ........................... 120
Index9

Front fog lamps ................................. 120
Changing bulbs (LEDs) ...................127
Display message ............................ 242
Front windshield
see Windshield
Fuel
Additives ........................................ 373
Calling up the range .......................229
Consumption statistics ..................229
Displaying the current
consumption .................................. 229
Driving tips .................................... 168
Fuel gauge ....................................... 29
Important safety notes ..................372
Premium-grade unleaded gasoline . 372
Problem (malfunction) ...................163
Refueling ........................................ 159
Specifications ................................ 372
Tank content/reserve fuel .............371
Fuel filler flap
Emergency release ........................161
Opening/closing ............................ 161
Fuel filter (display message) ............ 247
Fuel level Calling up the range (on-board
computer) ...................................... 229
Fuel tank
Capacity ........................................ 371
Problem (malfunction) ...................163
Fuse allocation chart (vehicle tool
kit) ...................................................... 314
Fuses Allocation chart ............................. 334
Before changing ............................. 334
Dashboard fuse box .......................334
Engine emergency stop .................335
Fuse box in the cargo
compartment ................................. 334
Fuse box in the engine
compartment ................................. 334
Important safety notes ..................333
G
Garage door opener Clearing the memory .....................296
Notes ............................................. 293
Opening/closing the garage door ..296
Programming (button in the rear-
view mirror) ................................... 294
Gasoline ............................................. 160
Gear or selector lever (cleaning
guidelines) ......................................... 311
Genuine Mercedes-Benz parts ......... 368
Glove box ........................................... 269
GTW (Gross Trailer Weight)
(definition) ......................................... 360
H
Handbrake see Parking brake
Hazard warning lamps ...................... 121
Headlamp cleaning system Notes ............................................. 377
Headlamp delayed switch-off
see Exterior lighting delayed switch-off
Headlamps
Adding fluid to cleaning system .....303
Adjusting the setting ...................... 128
Cleaning system (function) ............121
Misting up ...................................... 122
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 101
Adjusting (electrically) ...................101
Adjusting (manually) ......................101
Adjusting (rear) .............................. 102
Installing/removing (rear) ..............103
Luxury ............................................ 101
see NECK-PRO head restraints
Heating
see Climate control
High-beam headlamps
Changing bulbs .............................. 125
Display message ............................ 242
Switching on/off ........................... 121
Hill start assist .................................. 151
Hood Closing ........................................... 301
Display message ............................ 255
Opening ......................................... 300
Hydroplaning ..................................... 171
10Index

Notes ............................................. 305
Service messages ..........................305
Service products
Brake fluid ..................................... 375
Capacities ...................................... 371
Coolant (engine) ............................ 376
DEF special additives .....................374
Engine oil ....................................... 375
Fuel ................................................ 372
Important safety notes ..................370
Refrigerant (air-conditioning
system) .......................................... 375
Washer fluid ................................... 377
Settings
Factory (on-board computer) .........223
On-board computer .......................223
Setting the air distribution ............... 142
Setting the airflow ............................ 142
Side impact air bag ............................. 43
Side marker lamp (display
message) ............................................ 243
Side marker lamps Changing bulbs (front) ...................126
Side windows
Convenience closing feature ............91
Convenience opening feature ..........91
Hinged side windows .......................91
Important safety information ...........90
Opening/closing .............................. 90
Problem (malfunction) .....................93
Resetting ......................................... 92
Sliding sunroof
Important safety notes ....................93
Opening/closing .............................. 94
Problem (malfunction) .....................94
Resetting ......................................... 94
SmartKey
Changing the battery .......................80
Changing the programming .............79
Checking the battery .......................80
Convenience closing feature ............91
Convenience opening feature ..........91
Display message ............................ 256
Door central locking/unlocking .......76
Important safety notes ....................76
Loss ................................................. 82
Mechanical key ................................ 79
Positions (ignition lock) .................149Problem (malfunction) .....................82
Starting the engine ........................150
Snow chains .............................. 173, 341
Sockets Center console .............................. 286
Front-passenger footwell ...............286
Luggage compartment ...................286
Points to observe before use .........285
Rear compartment .........................286
Spare wheel
Notes/data .................................... 365
Storage location ............................ 315
see Emergency spare wheel
Specialist workshop ............................ 24
Speed, controlling see Cruise control
Speedometer
Additional speedometer (on-
board computer) ............................ 220
In the Instrument cluster .................29
Segments ...................................... 217
Selecting the unit of
measurement ................................ 223
see Instrument cluster
SRS (Supplemental Restraint
System) Display message ............................ 237
Introduction ..................................... 38
Warning lamp ................................. 263
Warning lamp (function) ................... 38
Standing lamps
Changing bulbs .............................. 126
Display message ............................ 243
Switching on/off ........................... 118
Starting (engine) ................................ 150
Station see Radio
Steering (display message) .............. 255
Steering wheel Adjusting (electrically) ...................110
Adjusting (manually) ......................110
Button overview ............................... 31
Buttons (on-board
computer) ...................................... 217
Important safety notes ..................109
Paddle shifters ............................... 15716Index

to spray back out when removing the fuel
pump nozzle, which could cause personal
injury.GWARNING
Do not fill diesel tanks with gasoline. Do not
mix diesel fuel with gasoline. Otherwise the
fuel system and engine could be damaged. In
addition, the vehicle could catch fire.
! Do not use gasoline to refuel vehicles with
a diesel engine. Do not use diesel to refuel
vehicles with a gasoline engine. Even a
small quantity of the wrong fuel will
damage 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).
Usually, you will find information about the
fuel grade on the pump. If you cannot find
the label on the gasoline pump, ask the gas
station staff.
You can find more information under “Fuel”
( Y page 372), or by contacting an
authorized Mercedes-Benz Service Center
or visiting http://www.mbusa.com (USA
only).
Diesel
Fuel grade
! Only refuel with ULTRA-LOW SULFUR
DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM). Using other diesel fuels could
result in increased wear and damage to the
engine and/or exhaust system.
Never refuel with marine diesel or heating
oil.
Do not mix these fuels with diesel fuels and
do not use any special additives, as this
may result in damage.
! Use a filter when adding fuel from a fuel
can. Otherwise, the fuel lines and/or the
fuel injection system could be blocked by
particles from the fuel can.
i Usually, you will find information about
the fuel grade on the pump. If you cannot
find the label on the gasoline pump, ask the
gas station staff.
You can find more information under “Fuel”
( Y page 372), or by contacting an
authorized Mercedes-Benz Service Center
or visiting http://www.mbusa.com (USA
only).
Low outside temperatures
! Do not use gasoline to refuel vehicles with
a diesel engine. Never mix diesel with
gasoline or kerosene, as this may result in
damage to the engine or fuel system.
Diesel fuel with improved cold flow properties
is available during the winter months. Further
information on fuel properties can be
160RefuelingDriving and parking

DEF
Important notes on use
To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent DEF. Adding DEF is one of the
tasks performed during maintenance. Under
normal operating conditions, a tank of DEF
lasts until the next service due date.
When the DEF supply has almost run out, the
Check Additive See Operator's
Manual message is shown in the
multifunction display.
When the DEF supply sinks to a minimum
level, the Remaining Starts: 16 message
is shown in the multifunction display.
When the Remaining Starts: 16 message
is shown in the multifunction display, you can
start the engine 16 more times. If DEF is not
added, it is then not possible to start the
engine again. Fill the DEF tank with about
1 gal (3.8 l) DEF or have the DEF tank refilled
at a qualified specialist workshop.
Use the special DEF refill bottle when filling
between maintenance intervals. Contact an
authorized Mercedes-Benz Center with any
questions or, if necessary, contact Roadside
Assistance ( Y page 22).
Further information about BlueTEC exhaust
gas aftertreatment and DEF is available at any
authorized Mercedes-Benz Center.
Adding DEF
GWARNING
Make sure
R DEF does not come into contact with skin,
eyes, or clothing
R to keep DEF out of the reach of children
If you and/or others have come into contact
with DEF:
R If DEF has gotten into contact with eyes,
flush with plenty of water immediately and
seek medical help.
R Clean affected skin immediately with plenty
of water.
R If DEF was swallowed, rinse mouth
immediately with plenty of water and drink
plenty of water. Consult a physician.GWARNING
If you open the DEF tank cap at high
temperatures, ammonia vapors can be
released.
Ammonia vapors have a pungent odor and are
particularly irritating to:
R skin
R mucous membranes
R eyes
You may experience a burning sensation in
your eyes, nose and throat, as well as
coughing and watering of the eyes.
Do not inhale any ammonia vapors that may
be released. Only refill the DEF tank in well
ventilated areas.
! Only use DEF that complies with
ISO 22241. Do not add any special
additives to DEF and do not thin DEF with
water. This could destroy the BlueTEC
exhaust gas aftertreatment.
If the outside temperature is lower than
Ò 11 †, damage may occur when topping up.
If DEF is frozen and there is an active warning
indicator, topping up may not be possible.
Park the vehicle in a warmer place, e.g. in a
garage, until DEF has become fluid again.
Filling is then possible again. Alternatively,
have the DEF tank refilled at a qualified
specialist workshop.
! Rinse surfaces that have come into
contact with DEF immediately with water or
remove DEF using a damp cloth and cold
water. If the DEF has already crystallized,
164RefuelingDriving and parking

In addition to being stamped on the vehicle
identification plate, the vehicle identification
number (VIN) is also stamped onto the vehicle
body. It is located under the right-hand seat
in the 2nd row of seats.XFold carpet : under the right-hand seat
forwards.
You will see the vehicle identification
number (VIN).
Engine number
:Emission control information plate,
including the certification of both federal
and Californian emissions standards;Engine number (stamped into the
crankcase)=VIN (on the lower edge of the windshield)Service products and capacities
Important safety notes
Service products include the following:
R fuels (e.g. gasoline, diesel)
R additives for exhaust gas aftertreatment
(DEF)
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windshield washer fluid
Vehicle components and their respective
lubricants must match. You should therefore
only use products that have been tested and
approved by Mercedes-Benz.
Information on tested and approved products
can be obtained at a Mercedes-Benz Center
or on the Internet at http://
www.mbusa.com (USA only).
GWARNING
Comply with all valid regulations with respect
to handling, storing and disposing of service
fluids. Otherwise, you could endanger
persons or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
370Service products and capacitiesTechnical data

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
Diesel engines – Important safety notes
! Only use commercially available ULTRA-
LOW SULFUR DIESEL FUEL (ULSD, 15 ppm
MAXIMUM SULFUR) that meets the
ASTM D975 standard. Failure to use
ULTRA-LOW SULFUR DIESEL FUEL (ULSD)
can severely damage the vehicle's exhaust
gas aftertreatment system.
! Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosene.
Otherwise, the fuel system and the engine
could be damaged.
To prevent malfunctions, diesel fuel with
improved flow characteristics is available in
the winter months. Check with your gas
station.
Information on the fuel grade can usually be
found on the gas pump. If the information
cannot be found on the gas pump, ask the gas
station personnel. For further information,consult an authorized Mercedes-Benz Center
or go to the Internet site
http://www.mbusa.com (USA only).
Diesel engines – Fuels containing
biodiesel (FAME [fatty acid methyl ester])
Mercedes-Benz USA approves the use of B5
(ULSD with a maximum of up to five percent
by volume biodiesel) for all diesel engines
with common rail direct injection (CDI) and
BlueTEC.
Pure biodiesel and diesel fuels that have a
higher percentage of biodiesel, e.g. B20, can
damage the fuel system and the engine and
are therefore not approved.
For further information, please ask the gas
station personnel. The label on the gas pump
must indicate clearly that the B5 biodiesel
blend fulfills the ULSD standard. If the label
is not clear, do not refuel the vehicle.
Do not refuel your vehicle with fuels unless
they have been approved by Mercedes-Benz.
Additives in gasoline
One of the major problems with poor quality
fuels is the creation of carbon deposits during
the combustion process. Mercedes-Benz
recommends that you use fuel brands
containing additives that prevent the build-up
of carbon deposits.
If you use fuels without these additives for an
extended period of time, there may be a build
up of carbon deposits, 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 the availability of gasoline with
relevant additives is not adequate, carbon
deposits can form. In this case, Mercedes-
Benz recommends the use of additives that
Service products and capacities373Technical dataZ

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.
DEF
Important safety notes
i For BlueTEC vehicles only.
DEF is a non-flammable, non-toxic, colorless,
odorless and water-soluble fluid.
! Only use DEF that complies with
ISO 22241. Do not add any special
additives to DEF and do not thin DEF with
water. This could destroy the BlueTEC
exhaust gas aftertreatment.
! Rinse surfaces that have come into
contact with DEF immediately with water or
remove DEF using a damp cloth and cold
water. If the DEF has already crystallized,
use a sponge and cold water to clean it. DEF
residues crystallize after time and
contaminate the affected surfaces.
High outside temperatures
If DEF heats up over 122 ‡ (50 † ) for longer
periods, e.g. as a result of direct sunlight on
the DEF reservoir, DEF can decompose.
Ammonia vapors develop as a result.
GWARNING
When opening the filler cap of the DEF tank
ammonia gas vapors may escape. Refill DEF
in a well ventilated area only. Ammonia gas
vapors have a pungent odor and are
particularly irritating for your skin, mucous
membranes, and eyes. Inhaling ammonia gas
vapors will cause burning eyes, nose, and
throat, as well as coughing and watering eyes.
Low outside temperatures
DEF freezes at a temperature of
approximately 12 ‡ (–11 † ). The vehicle is
equipped with a DEF preheating system when
it leaves the factory. Winter operation is
therefore also guaranteed at temperatures
below 12 ‡(–11 † ).
Additives
! Only use DEF in accordance with ISO
22241. Do not use additives with DEF and
do not dilute DEF with water. This may
destroy the BlueTEC exhaust gas
aftertreatment system.
Damage resulting from the use of additives
or water is not covered by the Mercedes-
Benz Limited Warranty.
Purity
Assuring the purity of DEF is particularly
important with respect to avoiding
malfunctions in the exhaust gas
aftertreatment system.
If DEF is pumped out of the DEF tank, e.g.
during repair work, it must not be returned to
the tank. The purity of the fluid can no longer
be guaranteed.
! Impurities in DEF, e.g. due to other
service products, cleaning agents or dust,
lead to increased emission values, system
malfunctions, catalytic converter damage
or damage to the BlueTEC system.
374Service products and capacitiesTechnical data