fuel additives MERCEDES-BENZ GLK SUV 2012 Owners Manual

Exhaust tail pipe (cleaning instruc-
tions) .................................................. 321
Exterior lighting Settings options ............................ .110
see Lights
Exterior mirrors
Adjusting ....................................... 103
Anti-dazzle mode (automatic) ........105
Folding in/out (automatically). ......104
Folding in/out (electrically). ..........104
Folding in (12-button multifunc-
tion steering wheel) .......................244
Out of position (troubleshooting) ...104
Parking position ............................. 105
Resetting ....................................... 104
Storing settings (memory func-
tion) ............................................... 106F
Fault message see Display messages
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 326
First-aid kit ......................................... 326
Flat tyre Changing a wheel/fitting the
spare wheel ................................... 332
Preparing the vehicle .....................329
Raising the vehicle .........................333
TIREFIT kit ...................................... 329
see Emergency spare wheel
Floormat ............................................ .310
Foglamps Extended range .............................. 115
Switching on/off ........................... 112
Folding the rear bench seat for-
wards/back ....................................... 298
Fording Off-road ......................................... 169
On flooded roads ........................... 168
Frequencies
Mobile phone ................................. 363
Two-way radio ................................ 363
Front foglamp
Display message (12-button mul-
tifunction steering wheel) ..............262Front foglamps
Display message (4-button multi-
function steering wheel) ................259
Fuel
Additives ........................................ 366
Consumption information ..............368
Displaying the range (12-button
multifunction steering wheel) ........231
Displaying the range (4-button
multifunction steering wheel) ........226
Grade (petrol) ................................ 366
Important safety notes ..................365
Problem (malfunction) ...................163
Quality (diesel )............................... 367
Refuelling ...................................... .161
Tank content/reserve fuel .............366
Tank content display (12-button
multifunction steering wheel) ..........33
Tank content display (4-button
multifunction steering wheel) ..........31
Fuel consumption
Current (12-button multifunction
steering wheel) .............................. 231
Fuel filler flap
Opening/closing ............................ 162
Fuel filter
Display message (12-button mul-
tifunction steering wheel) ..............269
Display message (4-button multi-
function steering wheel) ................266
Fuel reserve
Display message (12-button mul-
tifunction steering wheel) ..............268
Display message (4-button multi-
function steering wheel) ................265
see Fuel
Fuel tank
Capacity ........................................ 366
Problem (malfunction) ...................163
Fuse allocation chart (vehicle tool
kit) ...................................................... 327
Fuses Allocation chart ............................. 346
Before changing ............................. 346
Dashboard fuse box .......................347
Fuse box in the engine compart-
ment .............................................. 34712
Index

applicable to your vehicle on the vehicle's
identification plate.
VIN
X
Slide the right-hand front seat to its rear-
most position.
X Fold floor covering :upwards.
You will see VIN ;.
The VIN can also be found on the vehicle
identification plate (Y page 364).Engine number
The engine number is stamped onto the
crankcase. You can obtain further informa-
tion from any qualified specialist workshop. Service products and capacities
Important safety notes
G
WARNING
When handling, storing and disposing of any
service products, please observe the relevant
regulations, as you could otherwise endanger
yourself and others.
Keep service products away from children.
To protect your health, do not allow service
products to come into contact with your eyes
or open wounds. See a doctor immediately if
any service product is swallowed. H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner.
Service products include the following:
R fuels (e.g. petrol, diesel)
R exhaust gas aftertreatment additives, e.g.
AdBlue ®
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windscreen washer fluid
R climate control system refrigerant
Components and service products must be
matched. Mercedes-Benz recommends that
you use products tested and approved by
Mercedes-Benz. They are listed in this
Mercedes-Benz Owner's Manual in the appro-
priate section.
You can identify service products approved
by Mercedes-Benz by the following inscrip-
tions on the container:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations indi-
cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
Further information can be obtained from any
Mercedes-Benz Service Centre or on the
Internet at http://bevo.mercedes-benz.co m. Fuel
Important safety notes G
WARNING
Fuel is highly flammable. Fire, naked flames
and smoking are therefore prohibited when
handling fuels.
Switch off the engine and the auxiliary heating
before refuelling. Service products and capacities
365Technical data Z

G
WARNING
Avoid contact with fuels.
It is hazardous to your health if your skin
comes into direct contact with fuels or you
breathe in fuel vapours.
Tank capacity The total capacity of the fuel tank may vary,
depending on the vehicle equipment.
Model Total capa-
city GLK 300 4MATIC
GLK 300 4MATIC BlueEF-
FICIENCY
GLK 350 4MATIC BlueEF-
FICIENCY
GLK 350 CDI 4MATIC
66.0 l
All other models
59 l
or
66.0 l Model Of which
reserve fuel All models
Approx.
8.0 l Petrol (EN 228, E DIN 51626-1)
Fuel grade
! Do not use diesel to refuel vehicles with a
petrol engine. Even a small quantity of die-
sel will damage the fuel injection system.
! Only refuel using unleaded petrol with at
least 95 RON/85 MON that conforms to
European standard EN 228 or E DIN
51626-1 or an equivalent specification.
Fuel with this specification may contain up
to 10 % ethanol. !
Do not use the following:
R E85 (petrol with 85 % ethanol)
R E100 (100 %ethanol)
R M15 (petrol with 15 % methanol)
R M85 (petrol with 85 % methanol)
R M100 (100 % methanol)
R Petrol with metallic additives
R Diesel
Do not mix these fuels with petrol, and do
not use any additives. This can otherwise
lead to engine damage. This does not
include cleaning additives for the removal
and prevention of residue build-up. Only
cleaning additives recommended by
Mercedes-Benz should be added to petrol,
see "Additives". You can obtain further
information from any Mercedes-Benz
Service Centre.
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.
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 As a temporary measure, if the recom-
mended fuel is not available, you may also
use unleaded petrol with an octane rating
of 91 RON/82.5 MON. This may reduce
engine performance and increase fuel con-
sumption. Avoid driving at full throttle.
Information on refuelling (Y page 161).
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 366
Service products and capacitiesTechnical data

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-Benz Service
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. !
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. This
does not include flow improver additives.
For further information, see "Flow improv-
ers".
! Vehicles with a diesel particle filter: in
countries outside the EU, only refuel with
low-sulphur Euro diesel with a sulphur con-
tent under 50 ppm; otherwise the emission
control system could be damaged.
! Vehicles without a diesel particle fil-
ter: in countries where only diesel fuel with
a high sulphur content is available, you will
need to carry out your vehicle's oil change
at shorter intervals. More information
about the 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 161).
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- Service products and capacities
367Technical data Z