oil capacities MERCEDES-BENZ GLS-Class SUV 2017 X166 Owner's Manual

from the data shown here. You can find the
data applicable to your vehicle on the vehicle
identification plate.
Vehicle identification number (VIN)
XOpen the front right-hand door.
XOpen cover:in the direction of the arrow
and remove it.
You will see the VIN.
The VIN can also be found in the following loca-
tions:
Ron the lower edge of the windshield
(Ypage 378)
Ron the vehicle identification plate
(Ypage 377)
Engine number
:Emission control information plate, includ-
ing the certification of both federal and Cali-
fornian emissions standards
;Engine number (stamped into the crank-
case)
=VIN (on the lower edge of the windshield)
Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous 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.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
RFuels
RExhaust gas aftertreatment additives, e.g.
DEF
RLubricants (e.g. engine oil, transmission oil)
RCoolant
RBrake fluid
RWindshield washer fluid
RClimate control system refrigerant
Components and service products must match.
You should therefore only use products that
have been tested and approved by Mercedes-
Benz.
You can identify service products approved by
Mercedes-Benz by the following inscriptions on
the container:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB-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.
Other identifications, for example:
R0 W-30
R5 W-30
R5 W-40
378Service products and filling capacities
Technical data

If standard unleaded gasoline is unavailable
and you have to refuel with unleaded gasoline
of a lower grade, observe the following pre-
cautions:
ROnly fill the fuel tank to half full with regular unleaded gasoline and fill the rest with pre-
mium-grade unleaded gasoline as soon as
possible.
RDo not drive at the maximum speed.
RAvoid sudden acceleration and engine
speeds over 3,000 rpm.
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.
iFor further information, consult a qualified
specialist workshop or visit
http://www.mbusa.com (USA only).
As a temporary measure, if the recommended
fuel is not available, you may also use regular
unleaded gasoline with an octane rating of
87 AKI/91 RON. This may reduce engine per-
formance and increase fuel consumption. Avoid
driving at full throttle and sudden acceleration.
Never refuel using gasoline with a lower AKI.
Information on refueling (
Ypage 154).
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 preven-
tion 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 bran-
ded fuels that have additives.
The fuel quality available in some countries may
not be sufficient. Residue could build up in the
fuel injection system as a result. In such cases,
and in consultation with an authorized
Mercedes-Benz Center, the fuel 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
GWARNING
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.
!Only use Ultra Low Sulfur Diesel (ULSD),
otherwise it may lead to increased wear and
damage to the fuel system, engine and
exhaust system.
!Do not use the following:
Rgasoline
Rdiesel with a bio-diesel content greater
than 5% (e.g. B20)
Rbio-diesel
Rvegetable oil
Rparaffin
Rkerosene
Rmarine diesel
Rheating oil
Do not mix such fuels with diesel fuel and do
not use any special additives. Otherwise,
engine damage may occur.
!In countries outside USA and Canada, only
use sulfur-free diesel with a sulfur content
under 50 ppm. Otherwise, the emission con-
trol system could be damaged.
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 (
Ypage 154).
Low outside temperatures
iDiesel fuel with improved cold flow proper-
ties is available during the winter months.
Further information about fuel properties can
be obtained from oil companies, e.g. at gas
stations.
380Service products and filling capacities
Technical data

DEF
Important safet ynotes
Comply wit hth eimportant safet ynote sfo rser -
vic eproducts when handlin gDE F (Ypage 378).
DE Fis awater-soluble flui dfo rth eexhaus tgas
aftertreatmen tof diesel engines. It is:
Rno tpoisonous
Rcolorles sand odorless
Rno tflammable
Whe nyou ope nth eDE Fcontainer, small
amount sof ammonia vapor may be released.
Ammoni avapor shav e a pungen todo rand are
particularly irritatin gto th eskin ,to mucous
membrane sand to th eeyes .You may experi-
ence aburning sensation in your eyes ,nose and
throat .Coughin gand watering of th eeyes are
possible.
Do no tinhale ammonia vapors. Fil lth eDE Ftank
only in well-ventilated areas.
Low outsid etemperatures
DE Ffreezes at atemperature of approximately
12 ‡(-11 †). The vehicle is delivered from th e
factory equipped wit h aDEFpreheatin gsystem.
Winte roperation can thus be guaranteed eve n
at temperature sbelo w12 ‡(-11 †).
Additives
!Only use DE Fin accordance wit hIS O
22241. Do no tuse additive swit hDE Fand do
no tdilut eDE Fwit hwater. Thi smay destroy
th eBlueTE Cexhaus tgas aftertreatmen tsys -
tem.
Purity
!Impurities in DE F(e.g. due to other servic e
products ,cleanin gagents or dust )lead to :
Rincrease demission values
Rdamage to th ecatalytic converter
Rengin edamage
Rmalfunction sin th eBlueTE Cexhaus tgas
aftertreatmen tsyste m
Assurin gth epurit yof DE Fis particularly impor -
tant wit hrespec tto avoidin gmalfunction sin th e
BlueTE Cexhaus tgas aftertreatmen tsystem.
If DE Fis pumped out of th eDE Ftank ,e.g. durin g
repair work, it mus tno tbe returned to th etank .The purit
yof th eflui dcan no longer be guaran-
teed.
Filling capacities
ModelTota lcapacity
GLS 350 d4MATIC10.2 US gal
(38.7 l)
Engin eoil
General notes
!Never use engin eoil or an oil filte rof aspec-
ification other than is necessary to fulfill th e
prescribed servic eintervals. Do no tchang e
th eengin eoil or oil filte rin order to achiev e
longer replacement intervals than those pre -
scribed. You could otherwise cause engin e
damage or damage to th eexhaus tgas after-
treatment.
Follow th einstruction sin th eservic einterval
display regardin gth eoil change. Otherwise ,
you may damage th eengin eand th eexhaus t
gas aftertreatment.
Whe nhandlin gengin eoil, observ eth eimportant
safet ynote son servic eproducts (
Ypage 378).
The engin eoils are matched to th eperformanc e
of Mercedes-Ben zengines and servic eintervals.
You should therefore only use engin eoils and oil
filters that are approved fo rvehicles wit hmain -
tenance systems .
Fo r a list of approved engin eoils and oil filters ,
consult an authorized Mercedes-Ben zCenter.
Or visit th ewebsit e
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle.
Service products and filling capacities381
Technical data
Z

Gasoline enginesMB-Freigabe orMB-Approval
All models229.5
Diesel enginesMB-Freigabe orMB-Approval
GLS 350 d 4MATIC228.51, 229.31,229.51, 229.52
Mercedes-AMG vehicles: only use SAE 0W-40
or SAE 5W-40 engine oils.
iMB approval is indicated on the oil contain-
ers.
Filling capacities
The following values refer to an oil change
including the oil filter.
ModelCapacity
GLS 350 d 4MATIC8.5 US qt (8.0 l)
GLS 550 4MATIC
Mercedes‑AMG
vehicles9.0 US qt (8.5l)
Allot her models7.4 US qt (7.0 l)
Additives
!Do not use any additives in the engine oil.
This could damage the engine.
Brake fluid
GWARNING
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 ser-
vice products when handling brake fluid
(
Ypage 378).
The brake fluid change intervals can be found in
the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz in accordance with MB-Freigabe or 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.co m.
iHave the brake fluid regularly replaced at a
qualified specialist workshop in accordance
with the replacement intervals and the
replacement confirmed in the Maintenance
Booklet.
Coolant
Important safety notes
GWARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. 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.
Further information on coolants can be found
in the Mercedes-Benz Specifications for Ser-
vice Products, MB BeVo 310.1, e.g. on the
Internet at http://bevo.mercedes-benz.com.
Or contact a qualified specialist workshop.
!Always use a suitable coolant mixture, even
in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
iHave the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
382Service products and filling capacities
Technical data

Comply with the important safety notes for ser-
vice products when handlin g coolant
(
Ypage 378).
The coolant isa mixture of water and ant i-
freeze/corrosion inh ibitor. It is responsible for
the foll owing:
RAnti-corrosion protection
RAntifreeze protection
RRaisin g the boiling point
If the coolant has antifreeze protection downto
-35 ‡ (-37 †), the boilingpoin t of the coolant
during operation is approximately 266 ‡
(130 †).
The antifreeze concentrate /corrosion inh ibitor
concentration inthe engine co oling system
should:
Rbe at least 50 %.This willprotect the engine
co olin g system against freezing downto
approximate ly-35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection down
to -49 ‡ [-45 †]). Otherwise, heat willnotbe
dissipat ed as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inh ibitor concentrate inaccordance
wit h MB Specifications for Service Products
310.1.
iWhen the veh icle isfirstdeliv ered, it is fille d
wit h a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
iThe coolant ischecked with every mainte-
nance interval at a qualified specialist work-
shop.
Filling capacities
ModelCapacity
Mercedes ‑AMG
vehiclesApprox. 11.9 US qt
(11.3 l)
GLS350d 4MAT ICApprox. 12.2 US qt
(11.5 l)
GLS550 4MATICApprox. 12.0 US qt
(11.4 l)
All other modelsApprox. 10.3 US qt
(9.7 l)
Windshield washer system
Important safety notes
GWARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nents or the exhaust system. There isa risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
!Only MB SummerFit and MB WinterF it
washer fluid should bemixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may givea false reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
(
Ypage 378).
At temperatures above freezing:
XFill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year roun d.
Climate control system refrigerant
Important safety notes
The clim ate control system of your vehicle is fil-
led with refrigerant R‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
!Only the refrigerant R‑134a and the PAG oil
approved by Mercedes-Benz may be used.
The appr oved PAG oil may not be mixed with
any other PAG oil that is not approved for
Service products and filling capacities383
Technical data
Z

R-134arefrigerant. Otherwise, th eclimat e
control system may be damaged.
Service work, suc has refillin gwit hrefrigeran tor
replacing component parts, may only be carrie d
out by aqualified specialist workshop. All appli-
cable regulations, as well as SA Estandard J639,
mus tbe adhered to .
Always hav ewor kon th eclimat econtrol system
carrie dout at aqualified specialist workshop.
Refrigerant instruction label
Example: refrigeran tinstruction label
:
Warning symbol
;Refrigerant filling capacit y
=Applicable standards
?PAGoil part number
AType of refrigeran t
Warning symbol :advises you about :
RPossibledanger s
RHaving servic ewor kcarrie dout at aqualified
specialist workshop
Filling capacities
RefrigerantCapacit y
Mercede s‑AMG
vehicles
GLS 550 4MATIC45.9 ±0. 4oz
(1300 ±10 g)
All other models37.0 ± 0.4 oz
(1050 ±10 g)
PAG oilCapacity
All models3.9 ± 0.4 oz
(110 ± 10 g)
Vehicle data
General notes
Please note that for the specified vehicle data:
Rthe heights specified may vary as a result of:
-tires
-load
-condition of the suspension
-optional equipment
Roptional equipment reduces the maximum
payload.
Observe the information relating to level con-
trol:
RAIRMATIC package (Ypage 188)
ROffroad Engineering package (Ypage 218)
Dimensions and weights
Missing values were not available at time of
going to print.
Model:
Opening height
;
Max.
headroom
Mercedes-
AMG vehicles
384Vehicle data
Technical data