2018 MERCEDES-BENZ GLS SUV 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 fuel pump. If you cannot find the
label on the fuel pump, ask the gas station staff.
iFor more information, please contact 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 156).
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 156).
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.
388Service 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 386).
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
!Do no tuse engin eoil or an oil filte rwit h
specification sdeviatin gfrom those expressl y
require dfo rth eprescribed servic eintervals.
Do no tchang eth eengin eoil or oil filte rin
order to set replacement intervals longer than those prescribed. Thi scould otherwise cause
damage to th eengin eor exhaus tgas after-
treatment.
Follow th einstruction son th eservic einterval
display fo rchangin gth eengin eoil. Thi scould
otherwise cause damage to th eengin eor
exhaus tgas aftertreatment.
Whe nhandlin gengin eoil, observ eth eimportant
safet ynote son servic eproducts (
Ypage 386).
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.
Alternatively, visit th ewebsit e
http://bevo.mercedes-benz.com .
The table shows whic hengin eoils hav ebee n
approved fo ryour vehicle.
Service products and filling capacities389
Technical data
Z

Gasoline enginesMB-Freigabe orMB-Approval
All models229.5, 229.6
Mercedes‑AMG vehicles229.5
Diesel enginesMB-Freigabe orMB-Approval
GLS 350 d 4MATIC229.52
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 engine 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 386).
Only use brake fluid approved for Mercedes-
Benz according to 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.com.
iHave the brake fluid regularly replaced at a
qualified specialist workshop in accordance
with the replacement intervals and the
replacement confirmed in the service report.
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 con-
tact 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 service report.
Comply with the important safety notes for ser-
vice products when handling coolant
(
Ypage 386).
390Service products and filling capacities
Technical data

The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
Ranti-corrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection down to -35 ‡ (-37 †), the boiling point of the coolant
during operation is approximately 266 ‡
(130 †).
The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should:
Rbe at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection down
to -49 ‡[-45 †]) .Otherwise ,hea twill no tbe
dissipated as effectively.
Mercedes-Ben zrecommends an antifreeze/
corrosion inhibitor concentrat ein accordance
wit hMB Specification sfo rServic eProducts
310.1.
iWhe nth evehicle is first delivered, it is filled
wit h a coolan tmixture that ensures adequat e
antifreez ean danti-corrosio nprotection .
iThe coolan tis checke dat specifie dintervals
at aqualifie dspecialis tworkshop .
Filling capacities
ModelCapacity
Mercedes ‑AMG
vehiclesApprox .11.9 US qt
(11. 3l)
GLS 350 d4MATICApprox .12.2 US qt
(11. 5l)
GLS 550 4MATICApprox .12.0 US qt
(11. 4l)
All other modelsApprox .10.3 US qt
(9.7 l)
Windshield washer syste m
Importan tsafet ynotes
GWARNING
Windshield washer concentrat ecould ignit eif
it come sinto contact wit hhot engin ecompo-
nent sor th eexhaus tsystem. There is aris kof
fir ean dinjury.
Mak esur ethat no windshield washer con-
centrat eis spilled next to th efiller neck .
!Only MB SummerFit an dMB WinterFit
washer fluid should be mixed together .The
spray nozzles may otherwise becom e
blocked.
Do no tuse distilled or de-ionized water .Other -
wise ,th elevel sensor may giv e afalse reading.
Whe nhandlin gwasher fluid, observe th eimpor -
tant safet ynote son servic eproducts
(
Ypage 386).
At temperature sabov efreezing:
XFill th ewasher fluid reservoir wit h amixture of
water an dwindshield washer fluid, e.g. MB
SummerFit .
Ad d 1 partMB SummerFit to 10 0parts water .
At temperature sbelow freezing:
XFill th ewasher fluid reservoir wit h amixture of
water an dwasher fluid, e.g. MB WinterFit .
Fo rth ecorrec tmixin gratio refe rto th einfor-
mation on th eantifreez ereservoir.
iAd dwindshield washer fluid, e.g. MB Sum -
merFit or MB WinterFit ,to th ewasher fluid all
year rou
nd.
Climat econtro lsyste m refrigerant
Important safety notes
The climate 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 approved PAG oil may not be mixed with
any other PAG oil that is not approved for
Service products and filling capacities391
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
All models45.9±0. 4oz
(1300 ±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 190)
ROffroad Engineering package (Ypage 220)
Dimensions and weights
Missing values were not available at time of
going to print.
Model:
Opening height
;
Max.
headroom
Mercedes-
AMG vehicles
392Vehicle data
Technical data

All othermod-
els with::
Opening height
;
Max.
headr oom
AIRMATIC
package83.9in-
86.9 in
(2132 mm -
2207 mm )76.1 in-
79.1 in
(1934 mm -
2009 mm )
ON&OFFROAD
package83.9 in - 88.1 in
(2132 mm -
2237 mm )76.1 in-
80.3 in
(1934 mm -
2039 mm )
Mercedes‑AMG vehicles
Vehicle length203.2 in
(5162 mm)
Vehicle width including
exterior mirrors
Vehicle width without exte-
rior mirrors78.0 in
1982 mm
Vehicle height72.9 in
1850 mm
Wheelbase121.1 in
3075 mm
Maximum ground clear-
ance
Minimum ground clear-
ance7.8 in
(198 mm)
Turning radius40.7 ft
(12.40 m)
Maximum roof load220 lbs
(100 kg)
All other models
Vehicle length202.0 in
(5130 mm)
Vehicle width including
exterior mirrors84.3 in
(2141 mm)
Maximum vehicle height
(AIRMATIC package)75.2 in
(1910 mm)
All other models
Maximum vehicle height
(ON&OFFROAD package)76.4 in
(1940 mm)
Minimum vehicle height72.8 in
(1850 mm)
Wheelbase121.1 in
(3075 mm)
Maximum ground clear-
ance (AIRMATIC package)10.9 in
( 276 mm)
Maximum ground clear-
ance (ON&OFFROAD pack-
age)12.0 in
(306 mm)
Minimum ground clear-
ance7.9 in
(201 mm)
Turning radius40.7 ft
(12.40 m)
Maximum roof load220 lb
(100 kg)
Vehicle data for off-road driving
Fording depth
!
The depth of water must not exceed the
value specified in the table. Note that the
possible fording depth is less in flowing water.
:Fording depth
On vehicles with the AIRMATIC package or the
Off-Road Engineering package, loads up to the
maximum permissible load have no influence on
fording capability.
Missing values were not available at the time of
going to print.
Vehicle data for off-road driving393
Technical data
Z

Fordingdepth
Vehicles without the Off-
road Engineering package
Raised level19.7 in
(50 cm)
Vehicles with the Off-Road
Engineering package
Off-road level 119.7 in
(50 cm)
Off-road level 219.7 in
(50 cm)
Off-road level 323.6 in
(60 cm)
Mercedes-AMG vehicles
For more information about off-road fording, see
(Ypage 169).
Approach/departure angle
All vehicles (except vehicles with AMG body-
styling)
:;
Vehicles without the Off-
road Engineering package
Normal level25°20°
Raised level30°25°
Vehicles with the Off-
Road Engineering pack-
age
:;
Normal level25°20°
Off-road level 128°23°
Off-road level 230°25°
Off-road level 333°27°
Mercedes-AMG vehicles
Normal level (in sport mode
with AMG adaptive sport
suspension system activa-
ted)19°19°
Raised level22°21°
Vehicles with AMG bodystyling
:;
Vehicles without the Off-
road Engineering package
Normal level22°20°
Raised level27°25°
Vehicles with the Off-
Road Engineering pack-
age
Normal level22°20°
Off-road level 125°23°
Off-road level 227°25°
Off-road level 329°27°
For further information about approach/depar-
ture angles, see (Ypage 173).
Maximum gradient-climbing capabil-
ity
Note that the vehicle's gradient-climbing capa-
bility depends on the off-road conditions and the road surface conditions.
Vehicles with the ON&OFFROAD package:
the maximum gradient climbing ability is 100 %
when the LOW RANGE off-road gear is selected.
Vehicles without the ON&OFFROAD pack-
age: the maximum gradient climbing ability is
80 %.
394Vehicle data for off-road driving
Technical data

Accelerate carefully and make sure that the
wheels do not spin when driving on steep ter-
rain.
iIf the load on the front axle is reduced when
pulling away on a steep uphill slope, the front
wheels have a tendency to spin. 4ETS recog-
nizes this and brakes the wheels accordingly.
The rear wheel torque is increased, making it
easier to drive off.
For further information about the maximum gra-
dient climbing ability, see (
Ypage 173).
Trailer tow hitch
Mounting dimensions
!
If you have a trailer tow hitch retrofitted,
changes to the cooling system and drive train
may be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chassis
frame.
:Anchorage points for the trailer tow hitch
;Rear axle center line
Trailer loads
Permissible trailer load, braked (at a
minimum gradient-climbing capability
of 12% from a standstill)
All models7500 lbs (3402 kg)
Maximum drawbar noseweight (the
drawbar noseweight is not included in
the trailer load)
All models600 lbs (272 kg)
The actual noseweight may not be higher than
the value which is given. The value can be found
on the trailer tow hitch or trailer identification
plates. The lowest weight applies.
The maximum permissible trailer drawbar nose-
weight is the maximum weight with which the
trailer drawbar can be loaded. Limit for
Mercedes-Benz-approved trailer couplings.
Gross rear axle weight rating when tow-
ing a trailer
All models3968 lbs (1800 kg)
Ball position of the ball coupling
:7.5"
;2"
=2.75"
When choosing a ball coupling, the dimensions
stated in the illustration must not be exceeded.
Trailer tow hitch395
Technical data
Z