2018 MERCEDES-BENZ GLS Owners Manual

The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following: R
anti-corrosion protection R
antifreeze protection R
raising 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: R
be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †). R
not exceed 55% (antifreeze protection down
to -49 ‡[ -45 †]) . Otherwise , hea t will no t be
dissipated as effectively.
Mercedes-Ben z recommends an antifreeze/
corrosion inhibitor concentrat e in accordance
wit h MB Specification s fo r Servic e Products
310.1.
i Whe n th e vehicle is first delivered, it is filled
wit h a coolan t mixture that ensures adequat e
antifreez e an d anti-corrosio n protection .
i The coolan t is checke d at specifie d intervals
at a qualifie d specialis t workshop .
Filling capacities Model Capacity
Mercedes ‑ AMG
vehicles Approx . 11.9 US qt
(11. 3 l)
GLS 350 d 4MATIC
Approx . 12.2 US qt
(11. 5 l)
GLS 550 4MATIC
Approx . 12.0 US qt
(11. 4 l)
All other models
Approx . 10.3 US qt
(9.7 l) Windshield washer syste m
Importan t safet y notes
G WARNING
Windshield washer concentrat e could ignit e if
it come s into contact wit h hot engin e compo-
nent s or th e exhaus t system. There is a ris k of
fir e an d injury.
Mak e sur e that no windshield washer con-
centrat e is spilled next to th e filler neck .
! Only MB SummerFit an d MB WinterFit
washer fluid should be mixed together . The
spray nozzles may otherwise becom e
blocked.
Do no t use distilled or de-ionized water . Other -
wise , th e level sensor may giv e a false reading.
Whe n handlin g washer fluid, observe th e impor -
tant safet y note s on servic e products
( Y
page 386).
At temperature s abov e freezing:X
Fill th e washer fluid reservoir wit h a mixture of
water an d windshield washer fluid, e.g. MB
SummerFit .
Ad d 1 par t MB SummerFit to 10 0 parts water .
At temperature s below freezing: X
Fill th e washer fluid reservoir wit h a mixture of
water an d washer fluid, e.g. MB WinterFit .
Fo r th e correc t mixin g ratio refe r to th e infor-
mation on th e antifreez e reservoir.
i Ad d windshield washer fluid, e.g. MB Sum -
merFit or MB WinterFit , to th e washer fluid all
year rou nd.
Climat e contro l syste 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 forService products and filling capacities 391
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 78.0 in
1982 mm
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
40.7 ft
(12.40 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 393
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 169).
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 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 %.394
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 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.
C
Anchorage points for the trailer tow hitch
D
Rear axle center line Trailer loads
Permissible trailer load, braked (at a
minimum gradient-climbing capability
of 12% from a standstill) All models
7500 lbs (3402 kg)
Maximum drawbar noseweight (the
drawbar noseweight is not included in
the trailer load) All models
600 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 models
3968 lbs (1800 kg)
Ball position of the ball coupling
C
7.5"
D
2"

396