2012 MERCEDES-BENZ GL SUV refuelling

Engine
Problem Possible causes/consequences and
M Solutions
;
The yellow engin
ediag-
nostics warning lamp
light supw hile the
engin eisrunning. There may be
afault ,for example:
R in th eenginem anagement
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
R in the fuel system
The emission limit values may be exceeded and the engin emay
be runnin gine mergenc ymode.
X Hav ethe vehicl echec kedass oon as possible at aqualified
specialist workshop. Vehicle
swithad iesel engine: th efuel tan khas been run dry
(Y page 177).
X Start the engin ethre etof our times after refuelling.
If th eyellow engin ediagnostics warning lamp goes out ,emer-
ge ncyr unnin gmodeisc ancelled. The vehicle need not be
checked. 8
The yellow
reserve fuel
warnin glam pligh ts up
whil ethe engine is run-
ning. The fu
ellevel ha sdropp edinto the reserv erange.
Operatio nofthe auxiliary heatin gisdeactiv ated when the fuel level
drops into the reserve ran ge.
X Refue latthe nearest filling stat ion. ?
The red coolant warn-
ing lamp light
supwhile
the engine is running
and the coolant tem-
perature gaug eisatthe
start of the scale. The temperature senso
rfor the coolant temperatur egauge is
faulty.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 181).
X Consult aqualified specialist workshop. Warnin
gand indicator lam psin th einstru ment cluster
333On-board computer and displays Z

and, if applicable, the auxiliar
yheating before
refuelling. G
WARNING
Fuels are poisonous and hazardou stohealth.
Ther eisad anger of injury.
Do not swallow fuel or let it com eintoc ontact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of th ereac hofchil-
dren.
If you or others com eintoc ontac twith fuel,
observe th efollowing:
R Wash th efuel off any affected areas of skin
with water and soap immediately.
R If you get fuel in your eyes, rinse them thor-
oughl ywith clean water immediately .Seek
imm ediate me dical attention.
R If fuel is swallowed, seek imm ediate medi-
cal attention. Do not induc evomiting.
R Chang eany clothin gthat has com einto
contac twith fuel immediately.
Tank capacity Model Total capa-
city All models
100.0 l
Model Of which
reserve fuel All models
Approx.
12. 0l GL 63 AMG
App
rox.
14. 0l Petrol (EN 228,
EDIN 51626-1) Fuel grade
!
Do not use diese ltorefuel vehicles with a
petrol engine. Do not switc honthe igni tion
if you accidentally refuel with the wrong
fuel. Otherwise, the fuel will enter the fuel
system. Even smal lamount softhe wrong fuel could result in damage to the fuel sys-
tem and the engine. The repair costs are
high. Notify
aqualified specialist workshop
and have the fuel tan kand fue llin es
draine dcompletely.
! Only refuel using unleaded petrol with at
leas t95R ON/85 MO Nthat conform sto
Euro pean stan dard EN 22 8orEDIN
51626-1 or an equivalent sp ecification.
Fue lwitht his specif ication may contain up
to 10 %ethanol.
! Do not us ethe following:
R E8 5( petro lwith85%e thanol)
R E100 (100 %ethanol)
R M15 (petro lwith 15 %methanol)
R M85 (petrol with 85 %methanol)
R M10 0(100 %methanol)
R Petro lwith metallic additives
R Diesel
Do not mix these fuels with petrol, and do
not use any additives. This can otherwise
lead to engin edamage. This does not
include cleanin gadditives for the removal
and prevention of residue build-up. Only
cleanin gadditives recommended by
Mercedes-Ben zshould be added to petrol,
see "Additives". You can obtai nfurther
information from any Mercedes-Benz
Service Centre.
Usuall yyou will fin dinformation abou tthe
fuel grade on the pump. If you cannot fin dthe
label on the petrol pump, ask the filling sta-
tion staff.
i E10f uel contains up to 10% bioethanol.
Your vehicle is suitable for use with E10
fuel. You can refuel your vehicle using E10
fuel.
i Asatemporary measure, if the recom-
mended fuel is not available, you may also
use unleaded petrol with an octane rating
of 91 RON/82 MON. This may reduce
engine performanc eand increas efuel con-
sumption. Avoid driving at full throttle. 424
Service products and capacitiesTechnical data

Information on refuelling (Y
page 175).
AMG vehicles
! Only refuel using supe runleaded petrol
with at leas t98RON/88 MO Nthat con-
forms to Europea nstandard EN 228 or an
equival ents pecif ication.
Yo uc an otherwise impai rengine outpu tor
damage the engine.
! Premium-grade unleaded petro lwith an
octane ratin gof95R ON/85 MON ma ybe
used as atemporar ymeasur eifthe recom-
mended fuel is not available. This may
reduce engin eperforman ceand increase
fuel consumption .Asmuch as possible,
avoid driving at full throttle.
! Regular unleade dpetrol with an octane
rating of 91 RON/82.5 MON may also be
used as atemporary measure if the recom-
mended fuel is not available.
Doing so result sinnoticeably higher fuel
consumption ,and the engine power output
is noticeably reduced .Avoi dd riving at full
throt tle.
If only regular unleaded petrol with an
octane ratingof91R ON/82.5 MO Nor
lowe risa vailable ,you must have the vehi-
cle adapted to this fuel at aqualified spe-
cialist workshop.
i E10 fuel contains up to 10% bioethanol.
Your vehicle is suitabl efor use with E10
fuel. You can refuel your vehicle using E10
fuel.
Additives
! Operatin gthe engin ewith fuel additives
can cause wear in the fuel high-pressure
pump and contaminate the entire fuel sys-
tem. The repair costs are high. This does
not include additives for the removal and
prevention of residue build-up. Petrol must
only be mixed with additives recommended
by Mercedes-Benz .More information about
recommended additives can be obtained
from any Mercedes-Benz Servic eCentre. One of the major problem
swith low-grade
fuel is the creation of carbon deposits during
the process of burnin gfuel. 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 abuild-up
of carbon deposits. Thes ewill form especially
on the inlet valves and in the combustion
chamber.
This could lead to engine runnin gproblems,
e.g.:
R longe rengine warm-up phase
R uneven idle
R engine noise
R misfiring
R los so fpower
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.mer cedes-benz.com.
The quality of the fuel available in some coun-
tries may not be sufficien t.Residue could
build up as aresult. In such cases, and in
consultation with aMercedes-Ben zService
Cent re,the petrol ma ybemixed with the
additive recommended by Mercedes-Benz
(part no. A000989254510). You must
observe the notes and mixin gratios specified
on the container.
Consult aMercedes-Ben zService Cent reto
view alist of approved products. Observe the
instruc tions for use in the product descrip-
tion.
Do not mix other fuel additives with fuel. This
causes unnecessary cost sand could damage
the engi ne. Service products and capacities
425Technicaldata Z

Diesel (EN 590)
Fuel grade
G
WARNING
If you mix diesel fue lwithp etrol, th eflash
poin toft his fuel mixtur eislower than that of
pur ediesel fuel. When the engine is running,
components in the exhaust system may over-
heat unnoticed. There is arisk of fire.
Never refuel with petrol. Never add petrol to
diesel fuel.
! When refuelling, only use diesel fuel that
conforms to the European standard EN 590
or is of equivalen tquality .Fuel that does
not con form to EN 59 0can lead to
increased wear as well as damag etothe
engin eand exhaust sys tem.
! 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
otherwis elead to engine damage .This
does not include flo wimprover additives.
For further information, se e"Flow improv-
ers".
! Vehicles with adiesel particle filter: in
countries outside the EU, only refuel with
low-sulphur Eur odiesel with asulphur con-
ten tunde r50p pm; otherwise the emission
contro lsystem could be damaged.
! Vehicles without adiesel particle fil-
ter: in countries where only diesel fuel with
ah igh sulphur conten tisavailable ,you will
need to carry out your vehicle' soil change
at shorter intervals. More information
abou tthe interval for oil change can be obtained from any qualified specialist
workshop.
Usually you will fin dinformation about the
fuel grade on the pump. If you cannot find the
labe lont he petrol pump, ask the filling sta-
tion staff.
Infor mation on refuelling (Y page 175).
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 avoide dbyrefuelling 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, dies elfue lfrom
warmer areas may not be suitabl efor opera-
tion in colder climat icconditions.
i Further informatio noncountry-specific
fuel properties can be obtained from oil
companies, e.g. at filling stations.
Flow imp rovers
To improve the low-temperatur eresistanc eof
diesel fuel, aflow improver can be attached.
The effec tiveness of aflow improver is not
guaranteed for every fuel.
Only use flow improvers tested and approved
by Mercedes-Benz. Durin guse, please
observe the information on operation.
Correc tdosage and sufficien tmixing are deci-
sive in improving low-temperature resistance
with the flow improver. Overdosage can
potentially even decrease low-temperature
resistanc eand must therefor ebeavoided.
Follo wthe manufacturer's guidelines on dos-
age.
Mix the additive int othe diesel in good time,
before the flo wcharacteristic softhe diesel
becom einsufficie nt.O therwise, malfunctions
can only be rectified by heating the entire fuel
system, e.g. by parking in aheated garage. 426
Service products and capacitiesTechnical data