fuel additives MERCEDES-BENZ GL-Class 2014 X166 Owner's Manual

Folding in/out (automatically
)....... 123
Folding in/out (electrically). ..........123
Folding in when locking (on-board
computer) ...................................... 286
Out of position (troubleshooting) ...123
Setting ........................................... 123
Storing settings (memory function) 125
Storing the parking position ..........124
Eyeglasses compartment .................342 F
Filler cap see Fuel filler flap
Flat tire
MOExtended tires ..........................387
Preparing the vehicle .....................387
TIREFIT kit ...................................... 388
see Emergency spare wheel
Floormats ........................................... 367
Folding the rear bench seat
forwards/back .................................. 344
Fording Off-road ......................................... 195
On flooded roads ........................... 195
Front windshield
see Windshield
Fuel
Additives ........................................ 447
Consumption statistics ..................275
Displaying the current
consumption .................................. 276
Displaying the range ......................276
Driving tips .................................... 192
Fuel gauge ....................................... 33
Grade (gasoline) ............................ 446
Important safety notes ..................446
Low outside temperatures .............448
Premium-grade unleaded gasoline .446
Problem (malfunction) ...................185
Quality (diesel )............................... 447
Refueling ........................................ 182
Tank content/reserve fuel .............446
Fuel filler flap
Opening ......................................... 184
Fuel filter (display message) ............309Fuel level
Calling up the range (on-board
computer) ...................................... 276
Fuel tank
Capacity ........................................ 446
Problem (malfunction) ...................185
Fuses
Allocation chart ............................. 400
Before changing ............................. 400
Dashboard fuse box .......................401
Fuse box in the engine
compartment ................................. 401
Fuse box under rear bench seat ....402
Important safety notes ..................400 G
Garage door opener Clearing the memory .....................367
General notes ................................ 364
Important safety notes ..................364
Opening/closing the garage door ..367
Programming (button in the rear-
view mirror) ................................... 364
Gear indicator (on-board computer) 287
Genuine parts ...................................... 23
Glove box ........................................... 341
GTW (Gross Trailer Weight)
(definition) ......................................... 425 H
Handbrake see Parking brake
Hazard warning lamps ......................132
Headlamps Fogging up ..................................... 135
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 108
Adjusting (electrically) ...................109
Adjusting (manually). .....................109
Adjusting (rear) .............................. 110
Installing/removing (rear) ..............110
Luxury ............................................ 109
Heating
see Climate control Index
11

Sliding sunroof
................................. 99
Tailgate ............................................ 89
Reversing lamps (display message) 305
Roadside Assistance (breakdown) ....25
Roller sunblind Panorama roof with power tilt/
sliding pane l.................................. 100
Rear side windows .........................351
Roof carrier ........................................ 348
Roof lining and carpets (cleaning
guidelines) ......................................... 383
Roof load (maximum) ........................453
Route (navigation) see Route guidance (navigation)
Route guidance (navigation) ............277 S
Safety Child restraint systems ....................60
Occupant Classification System
(OCS) ............................................... 49
Safety system
see Driving safety systems
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................57
Adjusting the height ......................... 58
Belt force limiters ............................ 59
Cleaning ......................................... 383
Correct usage .................................. 55
Emergency Tensioning Devices ....... .59
Fastening ......................................... 57
Important safety guidelines .............55
Releasing ......................................... 58
Safety guidelines ............................. 43
Switching belt adjustment on/off
(on-board computer) ......................285
Warning lamp ................................. 324
Warning lamp (function) ................... 58
Seats
Adjusting (electrically) ...................108
Adjusting the head restraint ..........108
Cleaning the cover .........................383
Correct driver's seat position ........106
Entry position (3rd row of seats) ....113
Exit position (3rd row of seats) ......114 Folding down/up (third row of
seats) ............................................
.111
Folding the 2nd row of seats
forward electrically ........................115
Folding the 2nd row of seats
forward manually ........................... 113
Folding the rear bench seat
forwards/back ............................... 344
Important safety notes ..................107
Overview ........................................ 107
Seat heating problem ....................118
Seat ventilation problem ................119
Storing settings (memory function) 125
Switching seat heating on/off .......116
Switching seat ventilation on/off ..118
Selector lever
Cleaning ......................................... 382
Sensors (cleaning instructions) .......380
Service menu (on-board computer) .282
Service products Brake fluid ..................................... 450
Coolant (engine) ............................ 450
DEF special additives .....................448
Engine oil ....................................... 449
Fuel ................................................ 446
Important safety notes ..................445
Refrigerant (air-conditioning
system) .......................................... 452
Washer fluid .................................. .451
Settings
Factory (on-board computer) .........286
On-board computer .......................282
Setting the air distribution ...............158
Setting the airflow ............................158
SETUP (on-board computer) .............287
Side impact air bag .............................47
Side marker lamp (display
message) ............................................ 305
Side windows Cleaning ......................................... 379
Convenience closing feature ............95
Convenience opening feature ..........95
Hinged side windows .......................94
Important safety information ...........93
Opening/closing .............................. 94
Overview .......................................... 93
Problem (malfunction) .....................98
Resetting ......................................... 96 Index
17

water. Seek medical assistance without
delay.
R Change out of clothing contaminated with
DEF immediately.
! Only use DEF in accordance with
ISO 22241. Do not mix any additives with
DEF, and do not dilute DEF with water. This
may destroy the BlueTEC exhaust gas
aftertreatment system.
! The vehicle must be parked on level
ground to fill the DEF tank. The DEF tank
can only be filled as intended with the
vehicle parked on a level surface. This
avoids false level readings. Filling the tank
is not permitted if the vehicle is not parked
on a level surface. There is a danger of
overfilling, which could result in damage to
components of 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.
! DEF is not a fuel additive and must not be
added to the fuel tank. If DEF is added to
the fuel tank, this can lead to engine
damage.
For further information on DEF, see
(Y page 448).
You will find further information on DEF in the
printed Operator's Manual under "Technical
data". Opening the DEF filler cap The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with the SmartKey or with KEYLESS-
GO.
X
Switch the ignition off.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
X Turn blue DEF filler cap ;counter-
clockwise and remove it.
DEF filler cap ;is secured with a plastic
strip.
DEF refill bottle !
Only screw on the DEF refill bottle hand-
tight. It could otherwise be damaged. X
Unscrew the protective cap from DEF refill
bottle :.
X Place DEF refill bottle :on the filler neck
as shown and screw it on clockwise until
hand-tight. Refueling
187Driving and parking Z

VIN
X
Open the front right-hand door.
X Open cover :in the direction of the arrow
and remove it.
You will see the VIN.
The VIN can also be found in the following
locations:
R on the lower edge of the windshield
(Y page 444)
R on the vehicle identification plate
(Y page 444) 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 filling
capacities
Important safety notes
G
WARNING
Service products may be poisonous and
hazardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children. H
Environmental note
Dispose of service products in an
environmentally responsible manner.
Service products include the following:
R Fuels
R Exhaust gas aftertreatment additives, e.g.
DEF
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids.
Components and service products must be
matched. 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 an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved
by Mercedes-Benz by the following
inscription on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51) Service products and filling capacities
445Technical data Z

R
Gasoline with metalliferous additives
R Diesel
Do not mix such fuels with the fuel
recommended for your vehicle. Do not use
additives. This can otherwise lead to engine
damage. This does not include cleaning
additives for the removal and prevention of
residue build-up. gasoline may only be
mixed with cleaning additives
recommended by Mercedes-Benz; see
"Additives". You can obtain further
information from any authorized Mercedes-
Benz Center.
! To ensure the longevity and full
performance of the engine, only premium-
grade unleaded gasoline must be used.
If standard unleaded gasoline is
unavailable and you have to refuel with
unleaded gasoline of a lower grade,
observe the following precautions:
R Only fill the fuel tank to half full with
regular unleaded gasoline and fill the rest
with premium-grade unleaded gasoline
as soon as possible.
R Do not drive at the maximum speed.
R Avoid sudden acceleration and engine
speeds over 3,000 rpm.
Using mixtures of methanol and ethanol is not
permitted. E10 fuel or E15 fuel (unleaded
gasoline with 10% or 15% ethanol) can be
used.
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.
i For further information, consult a
qualified specialist workshop or visit
http://www.mbusa.com (USA only).
All other models: as a temporary measure, if
the recommended fuel is not available, you
may also use regular unleaded gasoline with
an octane rating of 87 RON/91 MON. This
may reduce engine performance and increase
fuel consumption. Avoid driving at full throttle and sudden acceleration. Never refuel using
fuel with a lower octane rating.
Information on refueling (Y
page 183).
Additives
! Operating the engine with fuel additives
added later can lead to engine failure. Do
not mix fuel additives with fuel. This does
not include additives for the removal and
prevention of residue buildup. gasoline
must only be mixed with additives
recommended by Mercedes-Benz. Comply
with the instructions for use on the product
label. More information about
recommended additives can be obtained
from any authorized Mercedes-Benz
Center.
Mercedes-Benz recommends that you use
branded fuels that have additives.
The quality of the fuel available in some
countries may not be sufficient. Residue
could build up in the injection system as a
result. In such cases, and in consultation with
an authorized Mercedes-Benz Center, the
gasoline may be mixed with the cleaning
additive recommended by Mercedes-Benz.
You must observe the notes and mixing ratios
specified on the container.
Diesel Fuel grade
G
WARNING
If you mix diesel fuel with gasoline, the flash
point is lower than that of pure diesel fuel.
When the engine is running, exhaust system
components could overheat without being
noticed. There is a risk of fire.
Never refuel with gasoline. Never mix gasoline
with diesel fuel.
! Refuel only using diesel fuel that
conforms to European standard EN 590 or
an equivalent specification. Fuel that does
not conform to EN 590 can lead to
increased wear and damage the engine and
exhaust system. Service products and filling capacities
447Technical data Z

!
Do not use the following:
R marine diesel
R heating oil
R bio-diesel
R vegetable oil
R gasoline
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.
! Vehicles with diesel particle filters: in
countries outside the EU, only use low
sulfur Euro diesel with a sulfur content of
under 50 ppm. Otherwise, the emission
control system could be damaged.
! Vehicles without a diesel particle
filter: in countries where only diesel fuel
with a high sulfur content is available, you
will need to carry out your vehicle's oil
change at shorter intervals. Further
information on oil change intervals can be
obtained at a qualified specialist workshop.
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.
Information on refueling (Y page 183).
Bio-diesel – FAME (fatty acid methyl ester)
Mercedes-Benz USA approves the use of bio-
diesel B5 for all BlueTEC diesel engines. The
concentration of bio-diesel in the ULSD may
not exceed 5% by volume.
Pure bio-diesel and diesel fuel with a higher
percentage of bio-diesel, such as B20, can
damage the engine and the fuel system. For
this reason, they are not approved.
For more information, consult the gas station
staff. The bio-diesel B5 label on the gasoline
pump must clearly state that the standard for
ULSD has been fulfilled. 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.
Information on refueling (Y
page 183).
Low outside temperatures
i Diesel fuel with improved cold flow
properties is available during the winter
months. Further information about fuel
properties can be obtained from oil
companies, e.g. at gas stations. DEF
Important safety notes Comply with the important safety notes for
service products when handling DEF
(Y
page 445).
DEF is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
R not poisonous
R colorless and odorless
R not flammable
When you open the DEF container, small
amounts of ammonia vapor may be released.
Ammonia vapors have a pungent odor and are
particularly irritating to the skin, to mucous
membranes and to the eyes. You may
experience a burning sensation in your eyes,
nose and throat. Coughing and watering of
the eyes are possible.
Do not inhale ammonia vapors. Fill the DEF
tank only in well-ventilated areas.
Low outside temperatures DEF freezes at a temperature of
approximately 12 ‡ (-11 †). The vehicle is
delivered from the factory equipped with a
DEF preheating system. Winter operation can
thus be guaranteed even at temperatures
below 12 ‡ (-11 †).448
Service products and filling capacitiesTechnical data

Model Capacity
GL 450 4MATIC
GL 550 4MATIC
9.0 US qt (8.5 l)
AMG vehicles
Without external oil
cooler: 9.0 US qt (8.5 l) GL 350 BlueTEC 4
MATIC
8.5 US qt (8.0 l)
Additives
!
Do not use any additives in the engine oil.
This could damage the engine.
Engine oil viscosity Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity,
this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE classification
(viscosity) suitable for the prevailing outside
temperatures. The table shows you which
SAE classifications are to be used. The low-
temperature characteristics of engine oils
can deteriorate significantly, e.g. as a result
of aging, soot and fuel deposits. It is therefore
strongly recommended that you carry out
regular oil changes using an approved engine
oil with the appropriate SAE classification. Brake fluid
G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
Comply with the important safety notes for
service products when handling brake fluid
(Y page 445).
The brake fluid change intervals can be found
in the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz according to MB Approval 331.0.
Information about approved brake fluid can
be obtained at any qualified specialist
workshop or on the Internet at
http://bevo.mercedes-benz.com.
i Have the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet. Coolant
Important safety notes G
WARNING
If antifreeze comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Let the engine cool down before you add
antifreeze. Make sure that antifreeze is not
spilled next to the filler neck. Thoroughly
clean the antifreeze from components before
starting the engine.
! Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine. 450
Service products and filling capacitiesTechnical data