MERCEDES-BENZ GLS 2017 Owners Manual

Fuel
Important safety notes
G WARNIN G
Fuel is highly flammable . If you handle fuel
incorrectly, there is a ris k of fir e and explo-
sion .
You must avoi d fire, open flames, creating
sparks and smoking. Switc h off th e engin e
and , if applicable, th e auxiliary heating before
refueling.
G WARNIN G
Fuel is poisonous and hazardous to health.
Ther e is a ris k of injury.
You must mak e sure that fuel does no t come
int o contact wit h your skin, eyes or clothing
and that it is no t swallowed. Do no t inhale fuel
vapors. Kee p fuel away from children .
If you or other s come int o contact wit h fuel ,
observ e th e following:R
Wash away fuel from skin immediately
usin g soap and water.R
If fuel comes int o contact wit h your eyes,
immediately rinse them thoroughly wit h
clean water. Seek medical assistanc e with-
out delay. R
If fuel is swallowed, seek medical assis-
tance without delay. Do no t induce vomit -
ing . R
Immediately chang e out of clothing whic h
has come int o contact wit h fuel .
Tank capacity
Model Total capa-
cit y
All models
26.4 US gal
(100. 0 l) Model Of which
reserv e
Mercedes ‑ AMG vehicles
Approx.
3. 7 US gal
(14.0 l)
Al l ot her models
Approx.
3.2 US gal
(12.0 l)
Gasoline Fuel grade
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system.
Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. Notify a qualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
! Only refuel using unleaded premium grade
gasoline with at least 91 AKI/95 RON.
i E10 fuel contains up to 10% bioethanol.
Your vehicle is E10-compatible. You can
refuel your vehicle using E10 fuel.
! Only use the fuel recommended. Operating
the vehicle with other fuels can lead to dam-
age to the fuel system, engine and exhaust
system.
! Do not use the following: R
E15 (gasoline with 15% ethanol) R
E85 (gasoline with 85% ethanol) R
E100 (1 00% ethanol) R
M15 (gasoline with 15% methanol) R
M30 (gasoline with 30% methanol) R
M85 (gasoline with 85% methanol) R
M100 (1 00% methanol) R
Gasoline with metalliferous additives R
Diesel
Do not mix such fuels with the fuel recom-
mended for your vehicle.
! To ensure the longevity and full perform-
ance of the engine, only premium-grade
unleaded gasoline must be used.Service products and filling capacities 379
Technical data Z

If standard unleaded gasoline is unavailable
and you have to refuel with unleaded gasoline
of a lower grade, observe the following pre-
cautions: R
Only 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. R
Do not drive at the maximum speed. R
Avoid 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.
i For 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 ( Y
page 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
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.
! 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: R
gasoline R
diesel with a bio-diesel content greater
than 5% (e.g. B20) R
bio-diesel R
vegetable oil R
paraffin R
kerosene R
marine diesel R
heating 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 ( Y
page 154).
Low outside temperatures
i Diesel 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.380
Service products and filling capacities
Technical data

DEF
Important safet y notesComply wit h th e important safet y note s fo r ser -
vic e products when handlin g DE F ( Y
page 378).
DE F is a water-soluble flui d fo r th e exhaus t gas
aftertreatmen t of diesel engines. It is:R
no t poisonousR
colorles s and odorlessR
no t flammable
Whe n you ope n th e DE F container, small
amount s of ammonia vapor may be released.
Ammoni a vapor s hav e a pungen t odo r and are
particularly irritatin g to th e skin , to mucous
membrane s and to th e eyes . You may experi-
ence a burning sensation in your eyes , nose and
throat . Coughin g and watering of th e eyes are
possible.
Do no t inhale ammonia vapors. Fil l th e DE F tank
only in well-ventilated areas.
Low outsid e temperaturesDE F freezes at a temperature of approximately
12 ‡ (-11 †). The vehicle is delivered from th e
factory equipped wit h a DE F preheatin g system.
Winte r operation can thus be guaranteed eve n
at temperature s belo w 12 ‡ (-11 †).
Additives
! Only use DE F in accordance wit h IS O
22241. Do no t use additive s wit h DE F and do
no t dilut e DE F wit h water. Thi s may destroy
th e BlueTE C exhaus t gas aftertreatmen t sys -
tem.
Purity
! Impurities in DE F (e.g. due to other servic e
products , cleanin g agents or dust ) lead to :R
increase d emission valuesR
damage to th e catalytic converterR
engin e damageR
malfunction s in th e BlueTE C exhaus t gas
aftertreatmen t syste m
Assurin g th e purit y of DE F is particularly impor -
tant wit h respec t to avoidin g malfunction s in th e
BlueTE C exhaus t gas aftertreatmen t system.
If DE F is pumped out of th e DE F tank , e.g. durin g
repair work, it mus t no t be returned to th e tank . The purit y of th e flui d can no longer be guaran-
teed.
Filling capacities Model Tota l capacity
GLS 350 d 4MATIC
10.2 US gal
(38.7 l)
Engin e oil
General notes
! Never use engin e oil or an oil filte r of a spec-
ification other than is necessary to fulfill th e
prescribed servic e intervals. Do no t chang e
th e engin e oil or oil filte r in order to achiev e
longer replacement intervals than those pre -
scribed. You could otherwise cause engin e
damage or damage to th e exhaus t gas after-
treatment.
Follow th e instruction s in th e servic e interval
display regardin g th e oil change. Otherwise ,
you may damage th e engin e and th e exhaus t
gas aftertreatment.
Whe n handlin g engin e oil, observ e th e important
safet y note s on servic e products ( Y
page 378).
The engin e oils are matched to th e performanc e
of Mercedes-Ben z engines and servic e intervals.
You should therefore only use engin e oils and oil
filters that are approved fo r vehicles wit h main -
tenance systems .
Fo r a list of approved engin e oils and oil filters ,
consult an authorized Mercedes-Ben z Center.
Or visit th e websit e
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle.Service products and filling capacities 381
Technical data Z

Gasoline engines MB-Freigabe or
MB-Approval
All models
229.5
Diesel engines MB-Freigabe or
MB-Approval
GLS 350 d 4MATIC
228.51, 229.31,
229.51, 229.52
Mercedes-AMG vehicles: only use SAE 0W-40
or SAE 5W-40 engine oils.
i MB approval is indicated on the oil contain-
ers.
Filling capacities The following values refer to an oil change
including the oil filter.
Model Capacity
GLS 350 d 4MATIC
8.5 US qt (8.0 l)
GLS 550 4MATIC
Mercedes ‑ AMG
vehicles 9.0 US qt (8.5 l)
Al l ot her models
7.4 US qt (7.0 l)
Ad ditives
! Do not use any additives in the engine oil.
This could damage the engine.
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 ser-
vice products when handling brake fluid
( Y
page 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.
i Have 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
G WARNING
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.
i Have the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.382
Service products and filling capacities
Technical data

Comp ly wit h the impo rtant safety notes for ser-
vice products when han dlin g coolant
( Y
page 378).
The coolant is a mixture of water and ant i-
freeze/corrosion inh ibit or. It is respon sible for
the foll owin g:R
Anti-corrosion protection R
Antifreeze protection R
Raisin g the boiling poin t
If the coolant has antifreeze protection down to
-35 ‡ (-37 †), the boilin g poin t of the coolant
during operation is appr oximately 266 ‡
(130 †).
The antifreeze concentrate /c orrosion inh ibit or
concentration in the engine co olin g system
sho uld: R
be at least 50 %. This will protect the engine
co olin g system against freezing down to
approximate ly -35 ‡ (-37 †).R
not exceed 55% (antifreeze protection down
to -49 ‡ [-45 †]). Otherwise, heat will not be
dissipat ed as effectively.
Mercedes-Benz recommen ds an antifreeze/
corrosion inh ibit or concentrate in accordance
wit h MB Spe cifications for Service Products
310.1.
i When the veh icle is first deliv ere d, it is fille d
wit h a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked wit h every mainte-
nance interval at a qualif ied spec ialist work-
sho p.
Filling capacities Model Capacity
Mercedes ‑ AMG
vehicles Approx. 11.9 US qt
(11.3 l)
GLS 350 d 4MAT IC
Approx. 12.2 US qt
(11.5 l)
GLS 550 4MATIC
Approx. 12.0 US qt
(11.4 l)
All other mod els
Approx. 10.3 US qt
(9.7 l) Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact wit h hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshie ld washer con-
centrate is spilled next to the filler neck.
! On ly MB SummerFit and MB WinterF it
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 378).
At temperatures above freezing: X
Fill the washer fluid reservoir wit h a mixture of
water and windshie ld washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing: X
Fill the washer fluid reservoir wit h 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.
i Add windshie ld 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 wit h 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 wit h
any other PAG oil that is not appr oved forService products and filling capacities 383
Technical data Z

R-134 a refrigerant. Otherwise, th e climat e
control system may be damaged.
Service work, suc h as refillin g wit h refrigeran t or
replacing component parts, may only be carrie d
out by a qualified specialist workshop. All appli-
cable regulations, as well as SA E standard J639,
mus t be adhered to .
Always hav e wor k on th e climat e control system
carrie d out at a qualified specialist workshop.
Refrigerant instruction label
Example: refrigeran t instruction label
C
Warning symbolD
Refrigerant filling capacit y

All other mod -
els with: C
Opening
height D
Max.
headr oom
AIRMATIC
package 83.9 in -
86.9 in
(2132 mm -
2207 mm ) 76.1 in -
79.1 in
(1934 mm -
2009 mm )
ON&O FFROAD
package 83.9 in -
88.1 in
(2132 mm -
2237 mm ) 76.1 in -
80.3 in
(1934 mm -
2039 mm )
Merc edes ‑ AMG vehicles
Vehicle length
203.2 in
(5162 mm)
Vehicle width including
exterior mirrors
Vehicle width without exte-
rior mirrors
Vehicle height
72.9 in
1850 mm
Wheelbase
121.1 in
3075 mm
Maximum ground clear-
ance
Minimum ground clear-
ance 7.8 in
(198 mm)
Turning radius
39.7 ft
(12.10 m)
Maximum roof load
220 lbs
(100 kg)
All other models
Vehicle length
202.0 in
(5130 mm)
Vehicle width including
exterior mirrors 84.3 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 height
72.8 in
(1850 mm)
Wheelbase
121.1 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-
ance 7.9 in
(201 mm)
Turning radius
40.7 ft
(12.40 m)
Maximum roof load
220 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.
C
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 driving 385
Technical data Z

Fording
depth
Vehicles without the Off-
road Engineering package
Raised level 19.7 in
(50 cm)
Vehicles with the Off-Road
Engineering package
Off-road level 1 19.7 in
(50 cm)
Off-road level 2 19.7 in
(50 cm)
Off-road level 3 23.6 in
(60 cm)
Mercedes-AMG vehicles
For more information about off-road fording, see
( Y
page 167).
Approach/departure angle
All vehicles (except vehicles with AMG body-
styling)
C D
Vehicles without the Off-
road Engineering package
Normal level 25° 20°
Raised level 30° 25°
Vehicles with the Off-
Road Engineering pack-
age C D
Normal level 25° 20°
Off-road level 1 28° 23°
Off-road level 2 30° 25°
Off-road level 3 33° 27°
Mercedes-AMG vehicles
Normal level (in sport mode
with AMG adaptive sport
suspension system activa-
ted) 19° 19°
Raised level 22° 21°
Vehicles with AMG bodystyling
C D
Vehicles without the Off-
road Engineering package
Normal level 22° 20°
Raised level 27° 25°
Vehicles with the Off-
Road Engineering pack-
age
Normal level 22° 20°
Off-road level 1 25° 23°
Off-road level 2 27° 25°
Off-road level 3 29° 27°
For further information about approach/depar-
ture angles, see ( Y
page 171).
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 %.386
Vehicle data for off-road driving
Technical data

Accelerate carefully and make sure that the
wheels do not spin when driving on steep ter-
rain.
i If 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 ( Y
page 171).
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.
C
Anchorage points for the trailer tow hitch
D
Rear axle center line
Trailer loads
Trailer loads, trailer drawbar nose-
weights and axle loads
Missing values were not available at the time of
going to print. GLS 450 4M
ATIC,
GLS 550 4M
ATIC and
GLS 350 d 4
MATIC
Permissible trailer load,
braked (at a minimum gra-
dient-climbing capability
of12%from a standstill) 7500 lbs
(3402 kg)
Maximum drawbar nose-
weight (the drawbar nose-
weight is not included in
the trailer load) 600 lbs
(272 kg)
Gross rear axle weight rat-
ing when towing a trailer 3968 lbs
(1800 kg)
Mercedes ‑ A
MG GLS 63 4
MATIC
Permissible trailer load,
braked (at a minimum gra-
dient-climbing capability
of12%from a standstill)
Maximum drawbar nose-
weight (the drawbar nose-
weight is not included in
the trailer load)
Gross rear axle weight rat-
ing when towing a trailer
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.Trailer tow hitch 387
Technical data Z

Ball position of the ball coupling
When choosing a ball coupling, the dimensions
stated in the illustration must not be exceeded.388
Trailer tow hitch
Technical data