child restraint MERCEDES-BENZ GL-Class 2015 X166 Owner's Manual

Car key
see SmartKey
CD player/CD changer (on-board
computer) .......................................... 281
Center console Lower section .................................. 39
Upper section .................................. 38
Central locking
Automatic locking (on-board com-
puter) ............................................ .287
Locking/unlocking (SmartKey) ....... .82
Changing bulbs
Brake lamps .................................. .140
High-beam headlamps ................... 139
Low-beam headlamps .................... 138
Child-proof locks
Important safety notes .................... 66
Rear doors ....................................... 67
Children
In the vehicle ................................... 61
Restraint systems ............................ 62
Special seat belt retractor .............. .61
Child seat
Forward-facing restraint system ...... 66
LATCH-type (ISOFIX) child seat
anchors ............................................ 63
On the front-passenger seat ............ 65
Rearward-facing restraint system .... 65
Top Tether ...................................... .64
Cigarette lighter ................................ 354
Cleaning Mirror turn signal .......................... .381
Trailer tow hitch ............................ .382
Climate control
3-zone automatic climate control
with additional rear-compartment climate control ............................... 152
Automatic climate control (3-
zone) .............................................. 150
Controlling automatically .............. .156
Cooling with air dehumidification .. 155
Defrosting the windows ................. 160
Defrosting the windshield .............. 159
Dual-zone automatic climate con-
trol ................................................. 147
General notes ................................ 146
Indicator lamp ................................ 156 Information about using auto-
matic climate control ..................... 154
Maximum cooling .......................... 159
Overview of systems .....................
.146
Problems with cooling with air
dehumidification ............................ 156
Problem with the rear window
defroster ........................................ 161
Rear control panel ......................... 150
Rear control panel (3-zone auto-
matic climate control with addi-
tional rear-compartment climate
control) .......................................... 152
Refrigerant ..................................... 454
Refrigerant filling capacity ............. 454
Setting the air distribution ............. 158
Setting the airflow ......................... 158
Setting the air vents ..................... .162
Setting the climate mode (AIR
FLOW) ............................................ 157
Setting the temperature ................ 157
Switching air-recirculation mode
on/off ............................................ 161
Switching on/off ........................... 154
Switching residual heat on/off ...... 161
Switching the rear window
defroster on/off ............................ 160
Switching the ZONE function on/
off ................................................. .159
Climate control system
Automatic engine start .................. 172
Automatic engine switch-off .......... 172
Deactivating/activating ................. 173
General information ....................... 172
Important safety notes .................. 171
Introduction ................................... 171
Coat hooks ......................................... 349
Cockpit Overview .......................................... 34
see Instrument cluster
COLLISION PREVENTION ASSIST
Operation/notes .............................. 70
COMAND
ON&OFFROAD menu ..................... 263
see separate operating instructions
COMAND display
Cleaning ......................................... 383 Index
7

Rear seats
Adjusting ....................................... 111
Display messag e............................ 324
Rear view camera
Cleaning instructions ..................... 382
Function/note s............................. 232
Switching on/of f........................... 233
Rear-view mirror
Anti-glare (manual) ........................ 122
Dipping (automatic) ....................... 123
Rear window defroster
Problem (malfunction) ................... 161
Switching on/of f........................... 160
Rear window wiper
Replacing the wiper blad e.............. 142
Switching on/of f........................... 141
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 454
Refueling
Fuel gaug e....................................... 35
Important safety notes .................. 185
Refueling process .......................... 186
see Fuel
Remote control
Programming (garage door
opener) .......................................... 366
Replacing bulbs
Important safety notes .................. 137
Overview of bulb types .................. 138
Removing/replacing the cover
(front wheel arch) .......................... 138
Reporting safety defects .................... 29
Reserve (fuel tank) see Fuel
Reserve fuel
Display message ............................ 310
Warning lamp ................................. 335
see Fuel
Residual heat (climate control) ........ 161
Restraint system Display message ............................ 301
Introduction ..................................... 44
Warning lamp ................................. 334
Warning lamp (function) ................... 45 Reversing feature
Panorama sliding sunroof .............. 100
Roller sunblind s............................. 101
Side windows ................................... 95
Sliding sunroof ............................... 100
Tailgate ............................................ 91
Reversing lamps (display mes-
sage) ................................................... 307
Roadside Assistance (breakdown) .... 26
Roller sunblind Panorama roof with power tilt/
sliding panel .................................. 101
Rear side window s......................... 353
Roof carrier ........................................ 350
Roof lining and carpets (cleaning
guidelines) ......................................... 385
Roof load (maximum) ........................ 455
Route (navigation) see Route guidance (navigation)
Route guidance (navigation) ............ 279 S
Safety Children in the vehicle ..................... 61
Child restraint systems .................... 62
Occupant Classification System
(OCS) ............................................... 53
Safety system
see Driving safety systems
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 49
Adjusting the height ......................... 48
Cleaning ......................................... 385
Correct usage .................................. 47
Fastening ......................................... 48
Important safety guidelines ............. 46
Introduction ..................................... 46
Releasing ......................................... 49
Switching belt adjustment on/off
(on-board computer) ...................... 288
Warning lamp ................................. 327
Warning lamp (function) ................... 49
Seats
Adjusting (electrically) ................... 108
Adjusting the head restraint .......... 108
Cleaning the cover ......................... 384 Index
17

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 29). Panic alarm
X
To activate: press0033button 0043for at
least one second.
An alarm sounds and the exterior lighting
flashes.
X To deactivate: press0033button 0043
again.
or
X Insert the SmartKey into the ignition lock.
or X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehi-
cle. Occupant safety
Restraint system: introduction
The restraint system reduces the risk of occu-
pants hitting parts of the vehicle interior in the
event of an accident. Furthermore, the
restraint system may also reduce the forces
exerted on the vehicle occupants when an
accident occurs.
The restraint system includes:
R Seat belt system
R Air bags
R Child restraint system
R Child seat securing system
The components of the restraint system work
in conjunction with each other. They can only
offer the intended level of protection if all
vehicle occupants:
R are correctly wearing their seat belts.
(Y page 47)
R adjust their seat and head restraint prop-
erly (Y page 107).
The driver is also responsible for ensuring
that the steering wheel has been correctly
positioned. Observe the information relating
to the correct driver's seat position
(Y page 106).
Always ensure the air bag can inflate properly if deployed (Y page 50).
An air bag supplements a correctly fastened
seat belt and is an additional safety device
providing increased protection for vehicle
occupants in appropriate accident situations.
For example, if the protection already provi-
ded by a correctly fastened seat belt will suf-
fice, the air bags are not deployed. Further-
more, only the air bags that would increase
the degree of protection afforded to the vehi- cle occupants in the event of an accident are deployed. Seat belts and air bags generally do
not protect against objects penetrating the
vehicle from the outside.
Information on the restraint system operation can be found under "Triggering of belt ten-
sioners and air bags" (Y page 58).44
Occupant safetySafety

See “Children in the vehicle” for information
on children traveling with you as well as vehi-
cle restraint systems (Y page 61).Important safety notes
G
WARNING
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 an air bag system to
accommodate a person with disabilities, con- tact an authorized Mercedes-Benz Center for
details. USA only: for further information con- tact our Customer Assistance Center at
1-800-FOR-MERCedes (1‑800‑ 367‑6372). 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 run-
ning. Therefore, malfunctions can be detec-
ted in good time.
The 0075 restraint system warning lamp in
the instrument cluster lights up when the igni- tion is switched on. It goes out no later than afew seconds after the engine is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the 0075
restraint system warning lamp:
R does not light up after the ignition is
switched on
R does not go out after a few seconds with
the engine running
R lights up again while the engine is running G
WARNING
If restraint system is malfunctioning, restraint system components may be triggered unin-
tentionally or might not be triggered at all in
the event of an accident with a high rate of
vehicle deceleration. This can affect the Emer- gency Tensioning Device or air bag, for exam-
ple. 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 OFF indicator
lamp
PASSENGER AIR BAG OFF indicator lamp
0043
is part of the Occupant Classification System (OCS).
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag.
If the PASSENGER AIR BAG OFF indicator
lamp:
R is lit : the front-passenger front air bag is
deactivated. They will then not be deployed
in the event of an accident.
R does not light up: the front-passenger
front air bag is enabled. If, in the event of an
accident, all deployment criteria are met,
the front-passenger front air bag is
deployed. Occupant safety
45Safety Z

Depending on the person in the front-
passenger seat, the front-passenger front air
bag must either be disabled or enabled; see
the following points. You must make sure of
this both before and during a journey.
R Children in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the
installed child restraint system, and the age
and size of the child. Therefore, be sure to
observe the notes on the "Occupant clas-
sification system (OCS)" (Y page 53) and
on "Children in the vehicle" (Y page 61).
There you will also find instructions on
backwards- and forwards-facing child
restraint systems on the front-passenger
seat.
R All other persons: depending on the clas-
sification of the person in the front-
passenger seat, the front-passenger front
air bag is enabled or deactivated
(Y page 53). Be sure to observe the notes
on "Seat belts“ (Y page 46) and "Air bags"
(Y page 50). There you can also find infor-
mation on the correct seat position. Seat belts
Introduction A correctly fastened seat belt is the most
effective means of restraining the movement
of vehicle occupants in the event of an acci-
dent or overturn. This reduces the risk of
vehicle occupants coming into contact with
parts of the vehicle interior or being thrown
from the vehicle. Furthermore, the seat belt
helps to keep the vehicle occupants in the
best position in relation to the air bag.
The seat belt system consists of:
R Seat belts
R Emergency Tensioning Devices for the
front seat belts and the outer seat belts in
the second and third row of seats
R Belt force limiters for the front seat belts
and the outer seat belts in the second row of seats and the seat belts in the third row
of seats
If the seat belt is pulled quickly or suddenly
from the belt sash guide, the inertia reel
locks. The belt strap cannot be pulled out fur- ther.
Emergency Tensioning Devices tighten the
seat belts in an accident, pulling them close
against the occupant's body. They do not,
however, pull vehicle occupants back
towards the backrest.
Emergency Tensioning Devices do not cor-
rect an incorrect seat position or incorrectly
worn seat belts.
When activated, the belt force limiters reduce
the force exerted by the seat belt on the vehi-
cle occupants.
The belt force limiters for the front seats are
synchronized with the front air bags, which
absorb part of the deceleration force. This
makes it possible to reduce the forces to
which vehicle occupants are subjected during an accident.
! If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of the front-passenger seat. This may oth-
erwise lead to the triggering of the Emer-
gency Tensioning Device in the event of anaccident, which will then need to be
replaced.
Important safety notes The use of seat belts and child restraint sys-
tems is required by law in:
R all 50 states
R the U.S. territories
R the District of Columbia
R all Canadian provinces
Even where this is not required by law, all
vehicle occupants should correctly fasten
their seat belts before starting the journey. G
WARNING
If the seat belt is incorrectly fastened, it can-
not protect as intended. Furthermore, an 46
Occupant safetySafety

incorrectly fastened seat belt can cause addi-
tional injury, for example, in an accident, dur-
ing braking or when abruptly changing direc-
tion. This poses an increased risk of injury or
even fatal injury.
Make sure that all vehicle occupants are
seated properly with a correctly fastened seat belt. G
WARNING
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. G
WARNING
Persons under 5 ft (1.50 m) in height cannot
fasten the seat belt correctly without an addi- tional suitable restraint system. If the seat
belt is incorrectly fastened, it cannot protect
as intended. Furthermore, an incorrectly fas-
tened seat belt can cause additional injury, for
example, in an accident, during braking or an
abrupt change of direction. This poses an
increased risk of injury or even fatal injury.
For this reason, always secure persons under
5 ft (1.50 m) in height in suitable restraint
systems.
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
R always secure the child in a child restraint
system suitable for this Mercedes-Benz
vehicle. The child restraint system must be appropriate to the age, weight and size of
the child
R always observe the instructions and safety
notes in the "Children in the vehicle" sec-
tion of this Operator's Manual
(Y page 61) in addition to the child
restraint system manufacturer's installa-
tion instructions
R be sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" (Y page 53) G
WARNING
The seat belts may not perform their intended protective function if:
R they are damaged, modified, extremely
dirty, bleach or dyed
R the seat belt buckle is damaged or
extremely dirty
R the 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 or 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
(Y
page 46).
All vehicle occupants must be wearing the
seat belt correctly before beginning the jour- Occupant safety
47Safety Z

The shoulder section of the seat belt must
always be routed across the center of the
shoulder. Adjust the belt sash guide if neces-
sary.
X To raise: slide the belt guide upwards.
The belt guide will engage in various posi-
tions.
X To lower: hold belt guide release 0043and
slide the belt guide downwards.
X Let go of belt guide release 0043in the
desired position and make sure that the
belt guide engages.
All seat belts except the driver's seat belt are equipped with a special seat belt retractor to
securely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(Y page 61).
Releasing seat belts !
Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt. Dam-
aged seat belts can no longer fulfill their
protective function and must be replaced.
Visit a qualified specialist workshop. X
Press release button 0043, hold belt
tongue 0044and guide it back towards belt
outlet 0087.
Seat belt adjustment The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. This
function adjusts the driver's and front-
passenger seat belt to the upper body of the
occupants.
The belt strap is tightened slightly when:
R the belt tongue is engaged in the buckle
and
R the ignition is switched on
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the vehicle occupant and the seat
belt. Do not hold on to the seat belt tightly
while it is adjusting.
You can switch the seat-belt adjustment on
and off in the on-board computer
(Y page 288).
Belt warning for the driver and front
passenger The
0076 seat belt warning lamp in the instru-
ment cluster is a reminder that all occupants
must fasten their seat belts. It may light up Occupant safety
49Safety Z

erwise be in the deployment area of the air
bag.
R For this reason, always secure persons less
than 5 ft (1.50 m) tall in suitable restraint
systems. Up to this height, the seat belt
cannot be worn correctly.
If a child is traveling in your vehicle, also
observe the following notes:
R Always secure children under 12 years of
age and less than 5 ft (1.50 m)in height in
suitable child restraint systems.
R Child restraint systems should be installed
on the rear seats.
R Only secure a child in a rearward-facing
child restraint system to the front-
passenger seat when the front-passenger
front air bag is disabled. If the PASSENGER
AIR BAG OFF indicator lamp is permanently
lit, the front-passenger front air bag is dis-
abled (Y page 45).
R Always observe the instructions and safety
notes on the "Occupant Classification Sys-
tem (OCS)" (Y page 53) and on "Children
in the vehicle" (Y page 61) in addition to
the child restraint system manufacturer's
installation instructions.
Objects in the vehicle interior may pre-
vent the air bag from functioning cor-
rectly. Before starting your journey and to
avoid risks resulting from the speed of the air bag as it deploys, make sure that:
R there are no people, animals or objects
between the vehicle occupants and an air
bag.
R there are no objects between the seat, door
and B-pillar.
R no hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
R no accessories, such as cup holders, are
attached to the vehicle within the deploy-
ment area of an air bag, e.g. to doors, side
windows, rear side trim or side walls.
R no heavy, sharp-edged or fragile objects
are in the pockets of your clothing. Store
such objects in a suitable place. G
WARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objectsto it. G
WARNING
Sensors to control the air bags are located in the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air bags might therefore not function properly
any more. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work- shop.
Front air bags Driver's air bag
0043inflates in front of the
steering wheel; front-passenger air bag 0044
inflates in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection on the front
seats.
The PASSENGER AIR BAG OFF indicator lamp
shows you the status of the front-passenger
front air bag (Y page 45). Occupant safety
51Safety Z

Window curtain air bags
Window curtain air bags
0043are integrated
into the side of the roof frame and deploy in
the area extending from the front door (A-pil-
lar) to the rear side window (D-pillar).
When deployed, the window curtain air bag
offers additional protection for the head.
However, it does not protect your chest or
arms.
In the event of a side impact, the window cur-
tain air bag is deployed on the side on which
the impact occurs.
If the system determines that window curtain
air bag deployment can offer additional pro-
tection to that provided by the seat belt, a
window curtain air bag may deploy in other
accident situations (Y page 58).Occupant Classification System
(OCS)
Introduction The Occupant Classification System (OCS)
categorizes the person in the front-passenger
seat. Depending on that result, the front-
passenger front air bag is either enabled or
deactivated.
The system does not deactivate:
R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices
In the following situation, the side impact air
bag and Emergency Tensioning Device are disabled: the OCS system detects that the
front-passenger seat is occupied, but the seat
belt tongue is not inserted in the belt buckle
of the front-passenger seat.
Prerequisites To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in an almost upright position with their
back against the seat backrest
R with their feet resting on the floor, if possi-
ble
If the front passenger does not observe these conditions, OCS may produce a false classi-
fication, e.g. because the front passenger:
R transfers their weight by supporting them-
selves on a vehicle armrest
R sits in such a way that their weight is raised
from the seat cushion
If it is absolutely necessary to install a child
restraint system on the front-passenger seat,
be sure to observe the correct positioning of
the child restraint system. Never place
objects under or behind the child restraint
system, e.g. cushions. The entire base of the
child restraint system must always rest on the
seat cushion of the front-passenger seat. The
backrest of the forwards-facing child restraint
system must, as far as possible, be resting on the backrest of the front-passenger seat.
The child restraint system must not touch the roof or be put under strain by the head
restraint. Adjust the angle of the seat back-
rest and the head restraint position accord-
ingly.
Only then can OCS be guaranteed to function
correctly. Always observe the child restraint
system manufacturer's installation instruc-
tions. Occupant safety
53Safety Z

Occupant Classification System opera-
tion (OCS) PASSENGER AIR BAG OFF indicator lamp
0043
informs you whether the front-passenger
front air bag is deactivated.
X Turn the SmartKey to position 1or 2in the
ignition lock, or press the Start/Stop but-
ton once or twice on vehicles with KEY-
LESS-GO.
The system carries out a self-diagnosis.
The PASSENGER AIR BAG OFF indicator lamp
must light up for approximately six seconds.
The PASSENGER AIR BAG OFF indicator lamp
then displays the status of the front-
passenger front air bag. If the status of the
front-passenger front air bag changes while
the vehicle is in motion, an air bag display
message may appear in the instrument clus-
ter (Y page 303). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG OFF indicator lamp. Be aware of the status of the front-passenger
front air bag both before and during the jour-ney.
If the PASSENGER AIR BAG OFF indicator
lamp:
R is lit, the front-passenger front air bag is
deactivated. They will then not be deployed
in the event of an accident.
R does not light up: the front-passenger
front air bag is enabled. If, in the event of an
accident, all deployment criteria are met,
the front-passenger front air bag is
deployed. G
WARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag is disabled. It will not be deployed in the event of
an accident and cannot perform its intended
protective function. A person in the front-
passenger seat could then, for example, come
into contact with the vehicle's interior, espe-
cially if the person is sitting too close to the
dashboard. This poses an increased risk of
injury or even fatal injury.
When the front-passenger seat is occupied,
always ensure that:
R the classification of the person in the front-
passenger seat is correct and the front-
passenger front air bag is enabled or disa-
bled in accordance with the person in the
front-passenger seat
R the front-passenger seat has been moved
back as far back as possible.
R the person is seated correctly.
Make sure, both before and during the jour-
ney, that the status of the front-passenger
front air bag is correct. G
WARNING
If you secure a child in a child restraint system on the front-passenger seat and the
PASSENGER AIR BAG OFF indicator lamp is
off, the front-passenger front air bag can
deploy in the event of an accident. The child
could be struck by the air bag. This poses an
increased risk of injury or even fatal injury.
Make sure that the front-passenger front air
bag has been disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit. 54
Occupant safetySafety