2018 MERCEDES-BENZ GLS SUV child restraint

Power washer ................................ 331
Rear view camera .......................... 334
Roof lining ...................................... 337
Seat belt ........................................336
Seat cover ..................................... 336
Sensors ......................................... 334
Side running board ........................ 334
Steering wheel ............................... 336
Trim pieces ....................................3 36
Washing by hand ........................... 331
Wheels ...........................................3 33
Windows ........................................ 333
Wiper blades .................................. 333
Wooden trim .................................. 336
Cargo compartment cover
Notes/how to use ......................... 306
Cargo compartment enlargement
Important safety notes .................. 303
Cargo compartment floor
Important safety notes .................. 307
Opening/closing ............................ 307
Stowage well (under) ..................... 307
Cargo tie down rings ......................... 305
CD
see also Digital Operator's Man-
ual ..................................................2 92
CD player (on-board computer) ........239
Center console
Lower section .................................. 40
Upper section .................................. 39
Central locking
Automatic locking (on-board com-
puter) ............................................. 244
Locking/unlocking (SmartKey) ........7 7
Child
Restraint system .............................. 61
Child seat
Forward-facing restraint system ...... 64
LATCH-type (ISOFIX) child seat
anchors ............................................ 62
On the front-passenger seat ............ 64
Rearward-facing res train
t system .... 64
Top Tether ...................................... .63
Child-proof locks
Important safety notes .................... 64
Rear doors ...................................... .65
Children
Special seat belt retractor .............. .60 Children in the vehicle
Important safety notes .................... 59
Cigarette lighter ................................ 312
Cleaning
Mirror turn signal .......................... .334
Trailer tow hitch .............................3 35
Climate control
3-zone automatic climate control
with additional rear-compartment
climate control ............................... 129
Automatic climate control (3-
zone) .............................................. 127
Controlling automatically ...............1 32
Cooling with air dehumidification .. 131
Defrosting the windows ................. 134
Defrosting the windshield .............. 133
Dual-zone automatic climate con-
trol ................................................. 125
General notes ................................ 125
Indicator lamp ................................ 132
Ionization ....................................... 135
Maximum cooling .......................... 134
Notes on using the automatic cli-
mate control .................................. 131
Overview of systems ......................1 25
Problem with the rear window
defroster ........................................ 135
Problems with cooling with air
dehumidification ............................ 132
Rear control panel ......................... 127
Rear control panel (3-zone auto-
matic climate control with addi-
tional rear-compa
rtment climate
control) .......................................... 129
Refrigerant ..................................... 391
Refrigerant filling capacity ............. 392
Setting the air distribution ............. 133
Setting the air vents ......................1 36
Setting the airflow ......................... 133
Setting the climate mode (AIR
FLOW) ............................................ 132
Setting the temperature ................ 132
Switching air-recirculation mode
on/off ............................................ 135
Switching on/off ........................... 131
Switching residual heat on/off ...... 135
Switching the rear window
defroster on/off ............................ 134
Index7

see Rear-view mirror
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (Bluetooth
®inter-
face) ..............................................2 96
Connecting (device manager) ........2 97
Frequencies ................................... 384
Installation ..................................... 384
Menu (on-board computer) ............ 240
Transmission output (maximum) .... 384
Modifying the programming
(SmartKey) ...........................................7 9
MOExtended tires .............................. 340
Mounting wheels
Lowering the vehicle ...................... 378
Mounting a new wheel ................... 377
Preparing the vehicle .....................3 75
Raising the vehicle ......................... 376
Removing a wheel .......................... 377
Securing the vehicle against roll-
ing away ........................................ 375
MP3
Operation ....................................... 239
see also Digital Operator's Man-
ual ..................................................2 92
Multifunction display
Function/notes .............................2 35
Permanent display ......................... 243
Multifunction steering wheel
Operating the on-board computer .. 234Overview .......................................... 38
Multimedia system
Switching on and off ......................2 93
Music files
see also Digital Operator's Man-
ual .................................................. 292
N
NavigationEntering a destination .................... 294
Menu (on-board computer) ............ 237
see also Digital Operator's Man-
ual .................................................. 292
Notes on breaking-in a new vehi-
cle ....................................................... 139
O
Occupant Classification System
(OCS)
Conditions ....................................... 52
Faults ............................................... 55
Operation ......................................... 52
System self-test ............................... 54
Occupant safety
Air bags ........................................... 49
Automatic measures after an acci-
dent ................................................. 59
Belt warning ..................................... 48
Children in the vehicle ..................... 59
Important safety notes .................... 44
Introduction to the restraint sys-
tem .................................................. 44
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 45
Pets in the vehicle ........................... 65
PRE-SAFE
®(anticipatory occu-
pant protection) ............................... 58
PRE-SAFE
®PLUS (anticipatory
occupant protection PLUS) .............. 59
Restraint system warning lamp ........ 45
Seat belt .......................................... 45
OCS
Conditions ....................................... 52
Faults ............................................... 55
Operation ......................................... 52
System self-test ............................... 54
Odometer ........................................... 236
Off-road driving
Approach/departure angle ............ 394
Checklist after driving off-road ...... 172
Checklist before driving off-road .... 171
Fording depth ................................ 393
General information ....................... 170
Important safety notes .................. 170
Maximum gradient climbing abil-
ity .................................................. 394
Traveling uphill ............................... 173
Off-road lights .................................... 118
Off-Road program (vehicles with-
out Off-Road Engineering package)
Function/notes ............................. 219
Index15

Rear seatsAdjusting ....................................... 101
Display message ............................ 277
Rear view camera
Cleaning instructions ..................... 334
Display in the multimedia system .. 200
Function/notes ............................. 199
Switching on/off ........................... 200
Rear window defroster
Problem (malfunction) ................... 135
Switching on/off ........................... 134
Rear window wiper
Replacing the wiper blade .............. 124
Switching on/off ........................... 123
Rear-view mirror
Anti-glare (manual) ........................ 110
Dipping (automatic) ....................... 112
Reflective safety jacket .................... 338
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 391
Refueling
Fuel gauge ....................................... 37
Important safety notes .................. 155
Refueling process .......................... 156
see Fuel
Remote control
Garage door opener ....................... 321
Replacing bulbs
General notes ................................ 120
High-beam headlamps ................... 121
Important safety notes .................. 120
Installing/removing the cover
(front wheel arch) .......................... 121
Low-beam headlamps .................... 121
Overview of bulb types .................. 120
Turn signals (front) ......................... 122
Reporting safety defects .................... 32
Rescue card ......................................... 32
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 263
Warning lamp ................................. 288
Residual heat (climate control) ........ 135
Restraint system
Display message ............................ 256
Introduction ..................................... 44 Warning lamp ................................. 287
Warning lamp (function) ................... 45
Reversing feature
Panorama sliding sunroof ................ 93
Roller sunblinds ............................... 95
Side windows ................................... 89
Sliding sunroof ................................. 93
Tailgate ............................................ 85
Reversing lamps (
display mes-
sage) ................................................... 260
Roadside Assistance (breakdown) .... 29
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 94
Rear side windows ......................... 310
Roof carrier ........................................ 308
Roof lining and carpets (cleaning
guidelines) ......................................... 337
Roof load (maximum) ........................ 392
Route (navigation)
see Route guidance (navigation)
Route guidance
see also Digital Operator's Man-
ual .................................................. 292
Route guidance (navigation) ............ 237
Route guidance active ...................... 238
S
Safety
Children in the vehicle ..................... 59
see Occupant safety
see Operating safety
Safety system
see Driving safety systems
SD card
Inserting ........................................ 298
Inserting/removing ........................ 298
Removing ....................................... 298
SD memory card
see also Digital Operator's Man-
ual .................................................. 292
Selecting ........................................ 239
Search & Send
see also Digital Operator's Man-
ual .................................................. 292
Seat
Correct driver's seat position ........... 97
18Index

Panic alarm
XTo activate:press!button :for at
least one second.
A visual and audible alarm is triggered if the
alarm system is armed.
XTo deactivate: press!button :again.
or
XInsert the SmartKey into the ignition lock.
or
XPress the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehicle.
Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi- cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupants are subjected during
an accident.
The restraint system comprises:
RSeat belt system
RAir bags
RChild restraint system
RChild seat securing systems
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all
vehicle occupants:
Rhave fastened their seat belts correctly
(Ypage 47)
Rhave the seat and head restraint adjusted
properly (Ypage 97) As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (
Ypage 97).
You also have to make sure that an air bag can
inflate properly if deployed (
Ypage 49).
An air bag supplements a correctly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags
are not deployed. When an accident occurs, only
the air bags that increase protection in that par- ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against objects penetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" (
Ypage 56).
See "Children in the vehicle" for information on
children traveling with you in the vehicle as well
as on child restraint systems (
Ypage 59).
Important safety notes
GWARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate a person with
disabilities, contact an authorized Mercedes-
Benz Center for details. USA only: for further
information contact our Customer Assistance
Center at 1-800 FOR-MERCEDES
(1‑800‑367‑6372).
Mercedes-Benz recommends that you only use
driving aids which have been approved specifi-
cally for your vehicle by Mercedes-Benz.
44Occupant safety
Safety

Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and at
regular intervals while the engine is running.
Therefore, malfunctions can be detected in
good time.
The6 restraint system warning lamp on the
instrument cluster lights up when the ignition is
switched on. It goes out no later than a few sec-
onds after the vehicle is started. The compo-
nents of the restraint system are in operational
readiness.
A malfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignition is switched
on
Rdoes not go out after a few seconds with the
engine running
Rlights up again while the engine is running
GWARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident. This can affect
for example the Emergency Tensioning
Device or the air bag. This poses an increased
risk of injury or even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp :and
PASSENGER AIR BAG OFF indicator lamp ;are
part of the Occupant Classification System
(OCS). The indicator lamps display the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up for 60 sec-
onds, subsequently both indicator lamps are
off (PASSENGER AIR BAG ON and OFF): the
front-passenger front air bag is able to deploy
in the event of an accident.
RPASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
If the PASSENGER AIR BAG ON indicator lamp is
off, only the PASSENGER AIR BAG OFF indicator lamp shows the status of the front-passenger
front air bag. The PASSENGER AIR BAG OFF
indicator lamp may be lit continuously or be off.
Depending on the person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during a journey.
RChildren in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" (
Ypage 51) and on "Chil-
dren in the vehicle" (Ypage 59). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat.
RAll other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated (
Ypage 51). Be sure to
observe the notes on "Seat
belts“ (
Ypage 45) and "Air bags"
(Ypage 49). There you can also find infor-
mation on the correct seat position.
Seat belts
Introduction
Seat belts are the most effective means of
restricting the movement of vehicle occupants
in the event of an accident or the vehicle rolling over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
Occupant safety45
Safety
Z

occupant in the best position in relation to the
air bag.
The seat belt system comprises:
RSeat belts
REmergency Tensioning Devices for the front
seat belts and the outer seat belts in the sec-
ond row of seats as well as the seat belts in
the third row
RSeat belt force limiters for the front seat belts
and the outer seat belts in the second row of
seats as well as the seat belts in the third row
If the seat belt is pulled out of the belt outlet
quickly or with a jerky movement, the belt
retractor locks. The belt strap cannot be extrac-
ted any further.
The Emergency Tensioning Device tightens the
seat belt in an accident, pulling the belt close
against the body. However it does not pull the
vehicle occupant back in the direction of the
backrest.
The Emergency Tensioning Device does not cor- rect an incorrect seat position or the routing of
an incorrectly fastened seat belt.
When triggered, a seat belt force limiter helps to
reduce the force exerted by the seat belt on the
vehicle occupant.
The seat belt force limiters for the front seats are
synchronized with the front air bags, which
absorb part of the deceleration force. This can
reduce the force exerted on the vehicle occu-
pants during an accident.
!If the front-passenger seat is not occupied,
do not engage the seat belt tongue in the
buckle on the front-passenger seat. Other-
wise, in addition to other systems, the Emer-
gency Tensioning Device could also be trig-
gered in the event of an accident and would
need to be replaced.
Important safety notes
The use of seat belts and child restraint systems
is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadian provinces
Even where this is not required by law, all vehicle
occupants should correctly fasten their seat
belts before starting the journey.
GWARNING
If the seat belt is not worn correctly, it cannot
perform its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury
or even fatal injury.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit-
ting properly.
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all
vehicle occupants:
Rhave fastened their seat belts correctly
(Ypage 47)
Rhave the seat and head restraint adjusted
properly (Ypage 97)
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
GWARNING
Persons less than 5 ft (1.50 m) tall cannot
wear the seat belt correctly without an addi-
tional and suitable restraint system. If the
seat belt is not worn correctly, it cannot per-
form its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
46Occupant safety
Safety

For this reason, always secure persons under
5 ft (1.50m)tall in suitable additional restraint
systems.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height istraveling in the
vehicle:
Ralways secure the child in a child restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child
Ralways observe the instructions and safety
notes on "Children in the vehicle"
(
Ypage 59) in addition to the child restraint
system manufacturer's installation and oper-
ating instructions
Ralways observe the instructions and safety
notes on the "Occupant classification system
(OCS)" (
Ypage 51)
GWARNING
The seat belts may not perform their intended protective function if:
Rthey are damaged, modified, extremely
dirty, bleached or dyed
Rthe seat belt buckle is damaged or
extremely dirty
Rthe Emergency Tensioning Devices, belt
anchorages or inertia reels have been modi-
fied.
Seat belts may be damaged in an accident,
although the damage may not be visible, e.g.
due to splinters of glass. Modified or damaged
seat belts may tear or fail, e.g. in an accident.
Modified Emergency Tensioning Devices
could accidentally trigger or fail to deploy
when necessary. This poses an increased risk
of injury or even fatal injury.
Never modify the seat belts, Emergency Ten-
sioning Devices, belt anchorages and inertia
reels. Make sure that the seat belts are
undamaged, not worn out and clean. Follow-
ing an accident, have the seat belts checked
immediately at a qualified specialist work-
shop.
Only use seat belts that have been approved for
your vehicle by Mercedes-Benz.
Proper use of the seat belts
Observe the safety notes on the seat belt
(Ypage 46).
All vehicle occupants must be wearing the seat
belt correctly before beginning the journey. Also
make sure that all vehicle occupants are always
wearing the seat belt correctly while the vehicle
is in motion.
When fastening the seat belt, always make sure
that:
Rthe seat belt buckle tongue is inserted only
into the belt buckle belonging to that seat
Rthe seat belt is pulled tight across your body
Avoid wearing bulky clothing, e.g. a winter
coat.
Rthe seat belt is not twisted
Only then can the forces which occur be dis-
tributed over the area of the belt.
Rthe shoulder section of the belt is routed
across the center of your shoulder
The shoulder section of the seat belt should
not touch your neck or be routed under your
arm or behind your back. Where possible,
adjust the seat belt to the appropriate height.
Rthe lap belt is taut and passes across your lap as low down as possible
The lap belt must always be routed across
your hip joints and not across your abdomen.
This applies particularly to pregnant women.
If necessary, push the lap belt down to you
r
hip joint and pull it tight using the shoulder
section of the belt.
Rthe seat belt is not routed across sharp, poin-
ted or fragile objects
If you have such items located on or in your
clothing, e.g. pens, keys or eyeglasses, store
these in a suitable place.
Ronly one person is using a seat belt
Infants and children must never travel sitting
on the lap of a vehicle occupant. In the event
of an accident, they could be crushed
between the vehicle occupant and seat belt.
Robjects are never secured with a seat belt if
the seat belt is also being used by one of the
vehicle's occupants
Also ensure that there are never objects
between a person and the seat, e.g. cushions.
Seat belts are only intended to secure and
restrain vehicle occupants. Always observe the
"Loading guidelines" for securing objects, lug-
gage or loads (
Ypage 300).
Occupant safety47
Safety
Z

seconds or once the driver's seat belt is fas-
tened.
If the vehicle's speed exceeds 15 mph
(25 km/h) once and the driver's and front-
passenger seat belts are not fastened, a warning
tone sounds. A warning tone also sounds with
increasing intensity for 60 seconds or until the
driver or front passenger have fastened their
seat belts.
If the driver or front passenger unfasten their
seat belts during the journey, the seat belt warn-
ing is activated again.
Air bags
Introduction
The installation point of an air bag can be rec-
ognized by the AIRBAG marking.
An air bag complements the correctly fastened
seat belt. It is no substitute for the seat belt. The
air bag provides additional protection in appli-
cable accident situations.
Not all air bags are deployed in an accident. The
different air bag systems function independ-
ently from one another (
Ypage 56).
However, no system available today can com-
pletely eliminate injuries and fatalities.
It is also not possible to rule out a risk of injury
caused by an air bag due to the high speed at
which the air bag must be deployed.
Important safety notes
GWARNING
If you do not sit in the correct seat position,
the air bag cannot protect as intended and
could even cause additional injury when
deployed. This poses an increased risk of
injury or even fatal injury.
To avoid hazardous situations, always make
sure that all of the vehicle's occupants:
Rhave fastened their seat belts correctly,
including pregnant women
Rare sitting correctly and maintain the great-
est possible distance to the air bags
Rfollow the following instructions
Always make sure that there are no objects
between the air bag and the vehicle's occu-
pants.
RAdjust the seats properly before beginning
your journey. Always make sure that the seat
is in an almost upright position. The center of
the head restraint must support the head at
about eye level.
RMove the driver's and front-passenger seats
as far back as possible. The driver's seat posi-
tion must allow the vehicle to be driven safely.
ROnly hold the steering wheel on the outside.
This allows the air bag to be fully deployed.
RAlways lean against the backrest while driv-
ing. Do not lean forward or lean against the
door or side window. You may otherwise be in
the deployment area of the air bags.
RAlways keep your feet in the footwell in front
of the seat. Do not put your feet on the dash-
board, for example. Your feet may otherwise
be in the deployment area of the air bag.
RFor this reason, always secure persons less
than 5 ft (1.50 m) tall in suitable restraint sys- tems. Up to this height, the seat belt cannot
be worn correctly.
If a child is traveling in your vehicle, also
observe the following notes:
RAlways secure children under twelve years of age and less than 5 ft (1.50 m)tall in suitable
child restraint systems.
RChild restraint systems should be installed on
the rear seats.
ROnly secure a child in a rearward-facing child
restraint system on the front-passenger seat
when the front-passenger front air bag is
deactivated. If the PASSENGER AIR BAG OFF
indicator lamp is permanently lit, the front-
passenger front air bag is deactivated
(
Ypage 45).
RAlways observe the instructions and safety
notes on the "Occupant Classi fication System
(OCS)" (Ypage 51) and on "Children in the
vehicle" (Ypage 59) in addition to the child
restraint system manufacturer's installation
and operating instructions.
Occupant safety49
Safety
Z