2019 MERCEDES-BENZ GLS SUV tow

Opening/closing the garage door
After it has been programmed, the integrated
garage door opener performs the function of the
garage door system remote control. Please also
read the operating instructions for the garage
door system.
X Turn the SmartKey to position 0048in the igni-
tion lock (Y page 140).
X Press either button 0044,0087or0085 which you
have programmed to operate the garage
door.
Garage door system with a fixed code: indi-
cator lamp 0043lights up green.
Garage door system with a rolling code: indi-
cator lamp 0043flashes green.
The transmitter will transmit a signal as long
as the button is pressed. The transmission is
halted after a maximum of ten seconds and
indicator lamp 0043lights up yellow.
X Press button 0044,0087or0085 again if necessary.
Clearing the memory Make sure that you clear the memory of the
integrated garage door opener before selling the vehicle. X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 140).
X Press and hold buttons 0044and 0085.
Indicator lamp 0043initially lights up yellow and
then green.
X Release buttons 0044and 0085.
The memory of the integrated garage door
opener in the rear-view mirror is cleared. Floormats
G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another. X
Driver's seat/front-passenger seat: slide
the respective seat back.
X Rear seats: slide the corresponding front
seat forwards.
X To install: place the floormat in the footwell.
X Press studs 0043onto retainers 0044.
X To remove: pull the floormat from retain-
ers 0044.
X Remove the floormat. Features
319Stowage and features Z

Infrared reflective windshield
The infrared reflecting glass prevents the vehi-
cle interior from becoming too hot. It also blocks
radio waves up into the gigahertz range.
To enable operation of radio-controlled equip-
ment, e.g. toll recording systems, areas on the
windshield are permeable to radio waves 0043. In
these areas, you can install radio-controlled sys-
tems.
These areas can best be seen from outside the
vehicle by observing the light reflected off the
windshield. 320
FeaturesStowage and featu
res

Driving abroad
An extensive Mercedes-Benz Service network is
also available in other countries. You can obtain further information from any authorized
Mercedes-Benz Center. Care
General notes
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man- ner.
! When cleaning your car, do not use:
R dry, coarse or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces and films with hard
objects, e.g. rings or ice scrapers. Otherwise,
you may scratch or damage the surfaces and films.
! Do not park your vehicle for a long period of
time directly after cleaning, particularly after
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for a few minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a long period of time.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents recom-
mended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident. After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
! Before driving into an automatic car wash,
make sure that it is suitable for the dimen-
sions of the vehicle. In particular, make sure
that:
R there is enough ground clearance between
the vehicle underbody and the guide rails of the automatic car wash.
R the clearance width of the automatic car
wash is sufficient, particularly the width of
the guide rails.
R you enter the automatic car wash straight
and in the center of the guide rails in order
to avoid damaging the tires or wheel rims.
Fold in the exterior mirrors before the vehicle
is washed. The exterior mirrors could other-
wise be damaged.
! When Active Distance Assist DISTRONIC or
the HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Active Distance Assist DISTRONIC and the
HOLD function in the following or similar sit-
uations:
R when towing the vehicle
R in the car wash
! Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts.
! Make sure that:
R the side windows and the sliding sunroof
are fully closed.
R that the blower of the ventilation/heating
system is switched off (OFF button has
been pressed).
R the windshield wiper switch is at position
005A.
The vehicle may otherwise be damaged.
! In car washes with a towing mechanism,
make sure that the automatic transmission is
in transmission position 005C; otherwise, the
vehicle could be damaged.
R Vehicles with a SmartKey:
Do not remove the SmartKey from the igni-
tion lock. Do not open the driver's door or 326
CareMaintenance and care

front-passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position
005Dauto-
matically and locks the wheels. You can
prevent this by shifting the automatic trans- mission to 005Cbeforehand.
R Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position 005Dauto-
matically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position 005C:
X Make sure the vehicle is stationary and the
ignition is switched off.
X Turn the SmartKey to position in the ignition
lock 0048(Ypage 140).
Use the SmartKey instead of the Start/Stop
button on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal.
X Shift the automatic transmission to position
005C.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the SmartKey
in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off wax from the windshield and the wiper blades. This
will prevent smears and reduce wiping noises
caused by residue on the windshield.
Washing by hand In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in all countries
concerned.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft sponge to clean.
X Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a gen-
tle jet of water.
X Do not point the water jet directly towards the
air inlets. X
Use plenty of water and rinse out the sponge
frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the paint-
work.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least 12 in
(30 cm) between the vehicle and the power
washer nozzle. Information about the correct
distance is available from the equipment
manufacturer.
Move the power washer nozzle around when
cleaning your vehicle.
Do not aim directly at any of the following:
R Tires
R Door gaps, roof gaps, joints, etc.
R Electrical components
R Battery
R Plug-type couplings
R Light bulbs
R Seals
R Trim elements
R Ventilation slots
Damaged seals or electrical components can
lead to leaks or failures.
! Vehicles with decorative film: parts of your
vehicle are covered with decorative film.
Maintain a distance of at least 27.5 in (70 cm)
between the film-covered parts of the vehicle and the nozzle of the power washer.
Information about the correct distance is
available from the equipment manufacturer. Care
327Maintenance and care Z

X
Make sure that the vehicle is stationary and
the SmartKey is in position 0048in the ignition
lock.
X Open the camera cover for cleaning via the
multimedia system (see Digital Operator's
Manual).
X To clean the camera: use clean water and a
soft cloth to clean the camera lens 0043.
360° camera: if you drive at speeds above
20 mph (30 km/h) or with the SmartKey in posi- tion 0092or0047 in the ignition lock, the cover of
the 360° camera closes.
Cleaning the exhaust pipe G
WARNING
The exhaust tail pipe and tail pipe trim can
become very hot. If you come into contact
with these parts of the vehicle, you could burn
yourself. There is a risk of burns.
Always be particularly careful and supervise
children closely around the exhaust pipe and
the exhaust pipe trims. Allow these compo-
nents to cool down before touching them.
! Vehicles with black exhaust pipes: black
chromed screens should not be polished with a chrome polish. They will otherwise lose their
black shine. For optimal care, the screens
should be rubbed with a lightly oiled cloth
after every car wash. Commercially available
engine and care oils are suitable for this.
For heavier soiling, you can apply a fine paint- work polish with a microfiber cloth. Remove
the excess polish residue after polishing.
Impurities combined with the effects of road grit
and corrosive environmental factors may cause flash rust to form on the surface. You can
restore the original shine of the exhaust pipe by
cleaning it regularly, especially in winter and
after washing.
X Clean the exhaust pipe with a chrome care
product tested and approved by Mercedes-
Benz.
Cleaning the trailer tow hitch H
Environmental note
Dispose of rags soaked in oil and grease in an environmentally responsible manner. !
Do not clean the ball coupling with a power
washer. Do not use solvents.
! Please note the care instructions in the
trailer coupling manufacturer's operating
instructions. The ball coupling must be cleaned if it becomes
dirty or corroded.
X Remove rust on the ball of the ball coupling,
e.g. with a wire brush.
X Remove dirt with a clean, lint-free cloth or a
brush.
X After cleaning, lightly oil or grease ball cou-
pling 0043.
X Check that the vehicle's trailer tow hitch is
working properly.
i You can also have the maintenance work on
the ball coupling and the trailer tow hitch car-
ried out by a qualified specialist workshop. Interior care
Cleaning the display !
For cleaning, do not use any of the following:
R alcohol-based thinner or gasoline
R abrasive cleaning agents
R commercially-available household cleaning
agents
These may damage the display surface. Do
not put pressure on the display surface when
cleaning. This could lead to irreparable dam-
age to the display. Care
331Maintenance and care Z

Where will I find...?
Reflective safety jacket
Removing/replacing the reflective
safety jacket The reflective safety jackets are located in front
door stowage compartments 0043. Reflective
safety jackets can also be stored in the rear door stowage compartments.
X To remove: pull out the safety jacket bag
containing the reflective safety jacket.
X Open the safety jacket bag and pull out the
reflective safety jacket.
X To stow: fold the reflective safety jacket, roll
it up and stow it in the safety jacket bag.
X Replace the safety jacket bag in stowage
compartment 0043.
i Remove a new reflective safety jacket from
its packaging material before sliding it into
the stowage compartment. The packaging
material may otherwise cause it to slip out or
make removing it difficult.
Observe the legal requirements in each country. Information on reflective safety jackets 0043
Maximum number of washes
0044 Maximum wash temperature
0087 Do not bleach
0085 Do not iron
0083 Do not use a laundry dryer
0084 Do not dry-clean
006B This is a class 2 vest
R The reflective safety jackets meet the require-
ments defined by the legal standard only:
- if the correct size is used and
- if the reflective safety jackets are correctly
fastened
R Before use, ensure that the reflective safety
jackets are clean and intact. The special prop-
erties may otherwise be compromised.
R The reflective safety jackets should be stored
in their original packaging in a dry place away
from sources of heat and light.
R The maximum number of washes specified is
not the only factor influencing the life span of
the reflective safety jackets. Their life span
also depends on use, care, storage, etc.
R The reflective safety jackets should be dis-
posed of and replaced with new ones:
- after 15 washes, and/or
- if the reflective strips have become
scratched, and/or
- if the backing material and/or reflective
strips have become soiled and cannot be
cleaned off, and/or
- if the fluorescence has faded e.g. due to the
effects of sunlight
R Dispose of reflective safety jackets in an envi-
ronmentally responsible manner. To do so,
contact your local waste disposal company. 334
Where will I find...?Breakdown assistance

Vehicle tool kit
General notes The vehicle tool kit can be found in the stowage
well under the cargo compartment floor.
Apart from certain country-specific variations,
the vehicles are not equipped with a tire-change
tool kit. Some tools for changing a wheel are
specific to the vehicle. For more information on
which tools are required to perform a wheel
change on your vehicle, consult a qualified spe-
cialist workshop.
Necessary tire-changing tools can include, for
example:
R jack
R wheel chock
R lug wrench
R ratchet wrench
R alignment bolt
Vehicles with a TIREFIT kit 0043
Lug wrench
0044 Towing eye
0087 Ratchet wrench
0085 Alignment bolt
0083 Tire sealant filler bottle
0084 Tire inflation compressor
006B Folding wheel chock
006C Jack
006D Wheel bolts
X Open the tailgate.
X Lift the cargo compartment floor up
(Y page 302).
X Use the TIREFIT kit (Y page 337). Vehicles with a "Minispare" emergency
spare wheel 0043
Alignment bolt
0044 Velcro fastener
0087 Folding wheel chock
0085 Ratchet wrench
0083 Lug wrench
0084 Jack
006B Wheel bolts
006C Towing eye
X Open the tailgate.
X Lift the cargo compartment floor up
(Y page 302).
X Remove the "Minispare" emergency spare
wheel (Y page 379). Flat tire
Preparing the vehicle
Your vehicle may be equipped with: R MOExtended tires (tires with run-flat proper-
ties)
Vehicle preparation is not necessary on vehi-
cles with MOExtended tires.
R a TIREFIT kit (Y page 335)
R an emergency spare wheel (only for certain
countries)
Vehicles with an mbrace system (USA only)
which are not equipped with a TIREFIT kit: in the event of a flat tire, contact the Customer Assis-tance Center for the mbrace emergency call
system (Y page 310).
Information on changing and mounting wheels
(Y page 372). Flat tire
335Breakdown assis tance

Using the TIREFIT kit
X
Do not remove any foreign objects which have
penetrated the tire, e.g. screws or nails.
X Remove the tire sealant bottle, the accompa-
nying TIREFIT sticker and the tire inflation
compressor from the stowage well under-
neath the cargo compartment floor
(Y page 335).
X Affix part 0043of the TIREFIT sticker to the
instrument cluster within the driver's field of
vision.
X Affix part 0044of the TIREFIT sticker near the
valve on the wheel with the defective tire. X
Pull connector 0085with the cable and hose 0083
out of the tire inflation compressor housing.
X Screw hose 0083onto flange 0084of tire sealant
bottle 0043.
X Place tire sealant bottle 0043head down into
recess 0044of the tire inflation compressor. X
Remove the cap from valve 006Bon the faulty
tire.
X Screw filler hose 006Conto valve 006B.
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 0087on the tire inflation
compressor to I.
The tire inflation compressor is switched on.
The tire is inflated.
i First, tire sealant is pumped into the tire. The
pressure can briefly rise to approximately
500 kPa (5 bar/73 psi).
Do not switch off the tire inflation com-
pressor during this phase.
X Let the tire inflation compressor run for a
maximum of five minutes. The tire should then
have attained a pressure of at least 180 kPa
(1.8 bar/26 psi).
If a pressure of 180 kPa (1.8 bar/26 psi) has
been attained after five minutes, see "Tire pres-
sure reached" (Y page 339).
If a tire pressure of 180 kPa (1.8 bar/26 psi) has not been attained after five minutes, see "Tire
pressure not reached" (Y page 339).
If tire sealant has escaped, clean it off affected
areas as quickly as possible. It is preferable to
use clean water.
If your clothes are soiled with tire sealant, have
them cleaned with perchloroethylene at a dry
cleaner as soon as possible. 338
Flat tireBreakdown assistance