MERCEDES-BENZ GLS SUV 2019 Owner's Manual

the time restriction on use as well as the speed
limitation specified on the emergency spare
wheel.
Replace the tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
When you are driving with the collapsible spare wheel mounted, the tire pressure loss warning
system or the tire pressure monitor cannot func-
tion reliably. Only restart the tire pressure loss
warning system or tire pressure monitor when
the defective wheel has been replaced with a
new wheel.
Vehicles with tire pressure monitor: after
mounting an emergency spare wheel, the sys-
tem may still display the tire pressure of the
removed wheel for a few minutes. The value dis- played for the mounted emergency spare wheelis not the same as the current tire pressure of
the emergency spare wheel. Removing/stowing the emergency
spare wheel
Vehicles with a "Minispare" emergency
spare wheel under the cargo compart-
ment floor Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 373).
Example image: vehicle without a lockable
cargo compartment floor. Removing the emergency spare wheel
X Lift the cargo compartment floor upwards
(Y page 302).
X Vehicles with a lockable cargo compart-
ment floor: remove the stowage tray.
X Release the Velcro fastener (Y page 335).X
Take out the jack.
X Turn emergency spare wheel retainer 0043
counter-clockwise and remove it.
X Remove stowage well 0044.
X Remove "Minispare" emergency spare wheel
0087.
Vehicles with a "Minispare" emergency
spare wheel in the emergency spare
wheel bag Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 373).
On vehicles with a Bang & Olufsen sound sys-
tem, the "Minispare" emergency spare wheel is
packed in an emergency spare wheel bag. The
emergency spare wheel bag is secured to the
cargo tie-down rings in the cargo compartment. Removing the emergency spare wheel
X Detach fastening straps 0044.
X Unhook retaining spring hooks 0043and 0087of
fastening straps 0044from the cargo tie-down
rings.
X Remove the emergency spare wheel bag with
the "Minispare" emergency spare wheel.
X Open the emergency spare wheel bag and
remove the "Minispare" emergency spare
wheel.
Stowing the emergency spare wheel X Place the "Minispare" emergency spare wheel
into the emergency spare wheel bag and
close the emergency spare wheel bag.
X Place the emergency spare wheel bag with
the "Minispare" emergency spare wheel into
the cargo compartment with the carrying
strap at the back. Emergency spare
wheel
379Wheels an d tires Z

X
Hook retaining spring hooks 0043and 0087of
fastening straps 0044into the cargo tie-down
rings.
X Tighten fastening straps 0044.
Mercedes-AMG vehicles with a collaps-
ible spare wheel under the cargo com-
partment floor !
Only place the collapsible spare wheel in the
vehicle when it is dry. Otherwise, moisture
may get into the vehicle.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 373).
The collapsible spare wheel can be found in the stowage well under the cargo compartment
floor. Removing the emergency spare wheel
X Lift the cargo compartment floor upwards
(Y page 302).
X Unscrew retaining screw 0044counter-clock-
wise.
X Remove collapsible spare wheel 0043from the
spare wheel well.
Inflating the collapsible spare wheel
(Y page 381).
Take the following steps to stow a used collaps- ible spare wheel. Otherwise, it will not fit into the
spare wheel well. Mercedes-Benz recommends
that you have this work performed at a qualified
specialist workshop, e.g. at an authorized
Mercedes-Benz Center.
Stowing the emergency spare wheel
X Unscrew the valve cap from the valve.
X If possible, unscrew the valve insert from the
valve and release the air. i
Fully deflating the tires can take a few
minutes.
X Screw the valve insert back into the valve.
X Screw the valve cap back on.
X Lay collapsible spare wheel 0043in the emer-
gency spare wheel well.
X Screw in retaining screw 0044clockwise in the
collapsible spare wheel to the stop.
X Swing the cargo compartment floor down
(Y page 302).
Mercedes-AMG vehicles with a collaps-
ible spare wheel in the emergency
spare wheel bag Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y
page 373).
On Mercedes-AMG vehicles with a Bang & Oluf-
sen sound system, the collapsible spare wheel is
packed in an emergency spare wheel bag. The
emergency spare wheel bag is secured to the
cargo tie-down rings in the cargo compartment. Removing the emergency spare wheel
X Unhook retaining spring hooks 0043of fasten-
ing strap 0044from the cargo tie-down rings.
X Remove the emergency spare wheel bag with
the emergency collapsible spare wheel.
X Open the bag and remove the emergency col-
lapsible spare wheel.
Inflating the collapsible spare wheel
(Y page 381).
Stowing the emergency spare wheel
X Place the collapsible spare wheel into the
emergency spare wheel bag and close the
emergency spare wheel bag.
X Place the emergency spare wheel bag with
the collapsible spare wheel into the cargo 380
Emergency spare wheelWheels and tires

compartment with the carrying strap at the
back.
X Hook retaining spring hooks 0043of fastening
strap 0044into the cargo tie-down rings.
X Tighten fastening strap 0044.Inflating the collapsible spare wheel
(Mercedes-AMG GLS 63 4MATIC)
! Inflate the collapsible spare wheel using the
tire inflation compressor before lowering the
vehicle. The wheel rim could otherwise be
damaged.
! Do not operate the tire inflation compressor
for longer than eight minutes at a time without
a break. It may otherwise overheat.
The tire inflation compressor can be operated again once it has cooled down.
Comply with the manufacturer's safety instruc-
tions on the tire inflation compressor label and
on the tire sealant bottle.
X Mount the collapsible spare wheel as descri-
bed (Y page 373).
The collapsible spare wheel must be mounted before it is inflated.
X Remove the tire inflation compressor from
the stowage space under the cargo compart-
ment floor (Y page 335). X
Pull connector 0085and hose 0084out of the
housing.
X Remove the cap from the valve on the col-
lapsible spare wheel.
X Screw union nut 0044of hose 0084onto the valve.
X Make sure on/off switch 0083of the tire infla-
tion compressor is set to 0.
X Insert connector 0085into a socket in your vehi-
cle. Cigarette lighter socket: (Y
page 307)
12 V sockets: (Y page 307)
Observe the notes on the cigarette lighter
(Y page 307). Observe the notes on sockets
(Y page 307).
X Turn the SmartKey to position 0047in the igni-
tion lock (Y page 140).
X Press on and off switch 0083on the tire inflation
compressor to I.
The tire inflation compressor is switched on.
The tire is inflated. The tire pressure is shown on pressure gauge 0087.
X Inflate the tire to the specified tire pressure.
The specified tire pressure is printed on the
yellow label of the emergency spare wheel.
X When the specified tire pressure has been
reached, press on and off switch 0083on the
tire inflation compressor to 0.
The tire inflation compressor is switched off.
X Turn the SmartKey to position 0092in the igni-
tion lock.
X If the tire pressure is higher than the specified
pressure, press pressure release valve but-
ton 0043until the correct tire pressure has been
reached.
X Unscrew union nut 0044on hose 0084from the
valve.
X Screw the cap onto the valve of the collapsi-
ble spare wheel again.
X Stow connector 0085and hose 0084in the lower
section of the tire inflation compressor.
X Stow the tire inflation compressor in the vehi-
cle. Emergency spare wheel
381Wheels and tires Z

Information regarding technical data
i The data stated here specifically refers to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels. Vehicle electronics
Installing wireless devices and mobile
phones G
WARNING
The electromagnetic radiation from two-way
radios can interfere with the vehicle electron-
ics if two-way radios are manipulated or ret-
rofitted incorrectly. This could jeopardize the
operating safety of the vehicle. There is a risk of an accident.
You should have all work on electrical and
electronic components carried out at a quali-
fied specialist workshop. G
WARNING
If you incorrectly operate two-way radios in
the vehicle, the electromagnetic radiation
may interfere with the vehicle electronics, for example if:
R the two-way radio is not connected to an
exterior antenna
R the exterior antenna is not correctly moun-
ted or is not low-reflection
This could jeopardize the operating safety of
the vehicle. There is a risk of an accident.
Have the low-reflection exterior antenna
installed at a qualified specialist workshop.
Always connect two-way radios to the low-
reflection exterior antenna when operating in the vehicle.
! The operating permit may be invalidated if
the instructions for installation and use of
two-way radios are not observed. In particular, the following requirements must
be complied with:
R only approved wavebands may be used
R observe the maximum permissible output
in these wavebands
R only approved antenna positions may be
used
Excessive levels of electromagnetic radiation
may cause damage to your health and the health of others. Using an exterior antenna takes into
account current scientific discussions relating
to the possible health hazards that may result
from electromagnetic fields.
The following antenna positions may be used for
the correct installation of two-way radios: Approved antenna positions
0043
Rear roof area
0044 Rear fender
i On the rear fenders, it is recommended to
position the antenna on the side of the vehicle
closest to the center of the road.
Use Technical Specification ISO/TS 21609
(Road Vehicles – "EMC guidelines for installa-
tion of aftermarket radio frequency transmitting
equipment") when installing wireless devices.
Observe the legal requirements for accessory
parts.
If your vehicle has installations for two-way radio
equipment, use the power supply or antenna
connections intended for use with the basic wir-
ing. Be sure to observe the manufacturer's Sup- plement when installing.
Deviations with respect to frequency bands,
maximum transmission outputs or antenna
positions must be approved by Mercedes-Benz. 382
Vehicle electronicsTechnical data

The maximum transmission output (PEAK) at the
base of the antenna must not exceed the fol-
lowing values: Frequency band Maximum
transmission output Short wave
3 - 54 MHz 100 W
4 m waveband
74 - 88 MHz 30 W
2 m waveband
144 - 174 MHz 50 W
Trunked radio system/
Tetra
380 - 460 MHz 10 W
70 cm waveband
400 - 460 MHz 35 W
Mobile communications
(2G/3G/4G) 10 W
The following can be used in the vehicle without
restrictions:
R Two-way radios with a maximum transmission
output of up to 100 mW
R Two-way radios with transmitter frequencies
in the 380 - 410 MHz waveband and a maxi-
mum transmission output of up to 2 W
(trunked radio/Tetra)
R Mobile phones (2G/3G/4G)
There are no restrictions when positioning the
antenna on the outside of the vehicle for the
following wavebands:
R Trunked radio system/Tetra
R 70 cm waveband
R 2G/3G/4G Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
X
Open the driver's door.
You will see vehicle identification plate 0043. Example: vehicle identification plate (USA only)
0044 Paint code
0087 VIN Example: vehicle identification plate (Canada only)
0044 Paint code
0087 VIN
i The data shown on the vehicle identification
plate is used only as an example. This data is
different for every vehicle and can deviate Identification plates
383Technical data Z

from the data shown here. You can find the
data applicable to your vehicle on the vehicle
identification plate. Vehicle identification number (VIN)
X
Open the front right-hand door.
X Open cover 0043in the direction of the arrow
and remove it.
The VIN can be seen. The VIN can also be found in the following loca-
tions:
R on the lower edge of windshield 0044
R on the vehicle identification plate
(Y page 383) Engine number
0043
Emission control information plate, includ-
ing the certification of both federal and Cali-
fornian emissions standards
0044 Engine number (stamped into the crank-
case)
0087 VIN (on the lower edge of the windshield) Service products and filling capaci-
ties
Important safety notes
G
WARNING
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. H
Environmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following: R Fuels
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant
Components and service products must match.
You should therefore only use products that 384
Service products and filling capacitiesTechnical data

have been tested and approved by Mercedes-
Benz.
You can identify service products approved by
Mercedes-Benz by the following inscriptions on
the container:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB-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:
R 0W-30
R 5W-30
R 5W-40 Fuel
Important safety notes G
WARNING
Fuel is highly flammable. Risk of fire and
explosion by improper handling of fuel.
You must avoid fire, open flames, smoking
and creating sparks. Switch off the ignition
before refueling and, if present, switch off the auxiliary heating. G
WARNING
Fuels are toxic and harmful to health. There is a risk of injury.
You must avoid fuels coming into contact with
skin, eyes and clothes or being swallowed.
Do not inhale the fuel vapors. Keep children
away from fuels.
Keep doors and windows closed during the
refueling process.
If you or others come into contact with fuel,
observe the following points:
R Immediately rinse the fuel off your skin with
soap and water.
R If you get fuel into your eyes, immediately
rinse your eyes throughly with clean water.
Seek medical attention immediately. R
Seek medical attention immediately if fuel
has been swallowed. Do not induce vomit-
ing.
R Immediately change out of clothing which
has come into contact with fuel.
Tank capacity Model Total capa-
city All models
26.4 US gal
(100.0 l) Model Of which
reserve Mercedes‑AMG vehicles
Approx.
3.7 US gal (14.0 l) All 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. Service products and filling capacities
385Technical data Z

!
Never refuel using:
R Diesel
R Gasoline with more than 10% ethanol by
volume, e.g. E15, E20, E85, E100
R Gasoline with more than 3% methanol by
volume, e.g. M15, M30, M85, M100
R Gasoline with metalliferous additives
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 may be used.
If premium-grade unleaded gasoline is
unavailable and you have to refuel with regu-
lar unleaded gasoline, observe the following
precautions:
R Only fill the fuel tank to half full with regular
unleaded gasoline and add the rest as soon
as possible with premium-grade unleaded
gasoline.
R Do not drive at the maximum design speed.
R Avoid sudden acceleration and engine
speeds over 3000 rpm.
i For 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 (Y page 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. Engine oil
General notes !
Do not use engine oil or an oil filter with
specifications deviating from those expressly required for the prescribed service intervals.
Do not change the engine oil or oil filter in
order to set replacement intervals longer than
those prescribed. This could otherwise cause damage to the engine or exhaust gas after-
treatment.
Follow the instructions on the service interval display for changing the engine oil. This could
otherwise cause damage to the engine or
exhaust gas aftertreatment.
When handling engine oil, observe the important safety notes on service products (Y page 384).
The engine oils are matched to the performance of Mercedes-Benz engines and service intervals.
You should therefore only use engine oils and oil filters that are approved for vehicles with main-
tenance systems.
For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Center.
Alternatively, visit the website
http://bevo.mercedes-benz.com.
The table shows which engine oils have been
approved for your vehicle. 386
Service products and filling capacitiesTechnical data

Model MB-Freigabe or
MB-Approval All models
229.5, 229.6
Mercedes‑AMG vehicles
229.5
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 engine oil
change, including the oil filter.
Model Capacity
GLS 550 4MATIC
Mercedes‑AMG
vehicles
9.0 US qt (8.5
l) All 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 384).
Use only brake fluid approved for Mercedes-
Benz according to MB-Freigabeor 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.
i Have 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 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.
You can find additional notes on the coolant in
the following places:
R in the Mercedes-Benz Specifications for
Service Products, MB BeVo 310.1
- on the Internet at
http://bevo.mercedes-benz.com
- on the Mercedes-Benz BeVo app
R a qualified specialized 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 service report.
Comply with the important safety notes for ser- vice products when handling coolant
(Y page 384). Service products and filling capacities
387Technical data Z

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, heat will not be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Service Products
310.1.
i When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked at specified intervals
at a qualified specialist workshop.
Filling capacities Model Capacity
Mercedes
‑AMG
vehicles Approx. 11.9 US qt
(11.3 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 system
Important safety notes G
WARNING
Windshield washer concentrate is highly flam- mable. If windshield washer concentrate getsonto hot components of the engine or the exhaust system, it can ignite. There is a risk of
fire and injury.
Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
! Only MB SummerFit and MB WinterFit
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 384).
At temperatures above freezing:
X Fill 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:
X Fill 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.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round. Climate control 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 for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried out by a qualified specialist workshop. All appli- 388
Service products and filling capacitiesTechni
cal data