ignition MERCEDES-BENZ GL-Class 2015 X166 Owner's Manual

Fuse box under rear bench sea
t.... 404
Important safety notes .................. 402 G
Garage door opener Clearing the memory ..................... 368
General notes ................................ 365
Important safety notes .................. 366
Opening/closing the garage doo r..3 68
Programming (button in the rear-
view mirror) ................................... 366
Gear indicator (on-board com-
puter) ................................................. .289
Genuine parts ...................................... 24
Glove box .......................................... .343
GTW (Gross Trailer Weight) (defini-
tion) .................................................... 427 H
Handbrake see Parking brake
Hazard warning lamps ......................132
Headlamps Fogging up ..................................... 135
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 108
Adjusting (electrically) ................... 109
Adjusting (manually) ..................... .109
Adjusting (rear) .............................. 110
Installing/removing (rear) .............. 110
Luxury ............................................ 109
Heating
see Climate control
High-beam headlamps
Adaptive Highbeam Assist ............. 134
Changing bulbs .............................. 139
Display message ............................ 306
Switching on/off ........................... 132
Hill start assist .................................. 171
HOLD function Deactivating ................................... 219
Display message ............................ 315
Function/notes ............................ .218 Hood
Closing .......................................... .373
Display message ............................ 324
Important safety notes .................. 372
Opening ......................................... 372
Horn ...................................................... 34
Hydroplaning ..................................... 198 I
Ignition lock see Key positions
Immobilizer .......................................... 78
Indicator lamps see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 373
Inspection see ASSYST PLUS
Instrument cluster
Overview .......................................... 35
Warning and indicator lamps ........... 36
Instrument cluster lighting .............. 274
Interior lighting Automatic control .......................... 136
Delayed switch-off (on-board
computer) ...................................... 287
Emergency lighting ........................ 137
Manual control ............................... 136
Overview ........................................ 135
Reading lamp ................................. 135
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 286
Setting the color of the ambient
lighting (on-board computer) ......... 286 J
Jack Storage location ............................ 388
Using ............................................. 431
Jump starting (engine) ......................397 12
Index

Correct driver's seat position ........ 106
Entry position (3rd row of seats) .... 113
Exit position (3rd row of seats) ...... 114
Folding down/up (third row of
seats) ............................................ .111
Folding the 2nd row of seats
forward electrically ........................ 115
Folding the 2nd row of seats
forward manually ........................... 112
Folding the rear bench seat for-
wards/back ................................... 346
Important safety notes .................. 107
Overview ........................................ 107
Seat heating problem .................... 118
Seat ventilation problem ................ 119
Storing settings (memory func-
tion) ............................................... 124
Switching seat heating on/off ....... 116
Switching seat ventilation on/off .. 118
Selector lever
Cleaning ......................................... 384
Sensors (cleaning instructions) ....... 381
Service menu (on-board com-
puter) ................................................. .284
Service products Brake fluid ..................................... 452
Coolant (engine) ............................ 452
DEF special additives ..................... 450
Engine oil ....................................... 451
Fuel ................................................ 448
Important safety notes .................. 447
Refrigerant (air-conditioning sys-
tem) ............................................... 454
Washer fluid ................................... 453
Settings
Factory (on-board computer) ......... 289
On-board computer ....................... 285
Setting the air distribution ...............158
Setting the airflow ............................ 158
SETUP (on-board computer) ............. 289
Side impact air bag .............................52
Side marker lamp (display mes-
sage) ................................................... 307
Side windows Cleaning ......................................... 381
Convenience closing feature ............ 97
Convenience opening feature ..........97 Hinged side window
s....................... 96
Important safety information ........... 95
Opening/closing .............................. 96
Overview .......................................... 95
Problem (malfunction) ..................... 99
Resetting ......................................... 98
Sliding sunroof
Important safety notes .................... 99
Opening/closing ............................ 100
Problem (malfunction) ................... 103
Resetting ....................................... 100
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 85
Changing the programming ............. 83
Checking the battery ....................... 85
Convenience closing feature ............ 98
Convenience opening feature .......... 97
Display message ............................ 325
Door central locking/unlocking ....... 82
Important safety notes .................... 82
Loss ................................................. 87
Mechanical key ................................ 84
Overview .......................................... 82
Positions (ignition lock) ................. 167
Problem (malfunction) ..................... 87
Starting the engine ........................ 170
Snow chains
Information .................................... 409
Snow drive program ....................... 256
Sockets
Center console .............................. 355
General notes ................................ 354
Luggage compartment ................... 355
Rear compartment ......................... 355
Specialist workshop ............................ 29
Special seat belt retractor .................. 61
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 278
In the Instrument cluster ................. 35
Segments ...................................... 275
Selecting the unit of measure-
ment .............................................. 285
see Instrument cluster 18
Index

the Service and Guarantee booklet or simply
call the Mercedes-Benz Customer Assistance
Center (USA) at the hotline number
1-800-FOR-MERCede s(1-800-367-6372 )or
Customer Service (Canada) at
1-800-387-0100. Vehicle operation outside the USA
and Canada
If you plan to operate your vehicle in foreign
countries, please be aware that:
R service facilities or replacement parts may
not be readily available.
R unleaded fuel for vehicles with a catalytic
converter may not be available. Leaded fuel may cause damage to the catalytic con-
verter.
R the fuel may have a considerably lower
octane rating. Unsuitable fuel can cause
engine damage.
Some Mercedes-Benz models are available
for delivery in Europe through our European
Delivery Program. For details, consult an
authorized Mercedes-Benz Center or write to
one of the following addresses.
In the USA
Mercedes-Benz USA, LLC
European Delivery Department
One Mercedes Drive
Montvale, NJ 07645-0350
In Canada
Mercedes-Benz Canada, Inc.
European Delivery Department
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9 Sports Utility Vehicle
G
WARNING
Due to the high center of gravity, the vehicle
may start to skid and roll over in the event of
an abrupt steering maneuver and/or when the vehicle's speed is not adapted to the road
conditions. There is a risk of an accident.
Always adapt your speed and driving style to
the vehicle's driving characteristics and to theprevailing road and weather conditions.
Utility vehicles have a significantly higher roll-
over rate than other types of vehicles.
Failure to operate this vehicle safely may
result in an accident, rollover of the vehicle,
and severe or fatal injury.
In a rollover crash, an unbelted person is sig- nificantly more likely to die than a person
wearing a seat belt.
You and all vehicle occupants should always
wear your seat belts. Operating safety
Important safety notes
G
WARNING
If you do not have the prescribed service/
maintenance work or any required repairs
carried out, this can result in malfunctions or system failures. There is a risk of an accident.
Always have the prescribed service/mainte-
nance work as well as any required repairs
carried out at a qualified specialist workshop. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system. There is a risk of fire. Introduction
27 Z

Cockpit
Function Page
0043
Steering wheel paddle
shifters
180
0044
Combination switch 131
0087
Instrument cluster 35
0085
Horn
0083
DIRECT SELECT lever 176
0084
PARKTRONIC warning dis-
play
225
006B
Overhead control panel 41
006C
Climate control systems 146
006D
Ignition lock 167
Start/Stop button 167 Function Page
006E
Adjusts the steering wheel
manually
119
006F
Adjusts the steering wheel
electrically
119
Steering wheel heating 120
0070
Cruise control lever 204
0071
Opens the hood 372
0072
Diagnostics connection 28
0073
Electric parking brake 192
0074
Light switch 128
0075
Night View Assist Plus 24334
CockpitAt a glance

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

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

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

Deployment of Emergency Tensioning
Devices and air bags
Important safety notes G
WARNING
The air bag parts are hot after an air bag has
been deployed. There is a risk of injury.
Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified spe-
cialist workshop as soon as possible. G
WARNING
A deployed air bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.
Have the vehicle towed to a qualified special- ist workshop in order to have a deployed air
bag replaced.
It is important for your safety and that of any passengers to have deployed air bags
replaced and to have any malfunctioning air
bags repaired. This will help to make sure the
air bags continue to perform their protective
function for the vehicle occupants in the
event of a crash. G
WARNING
Pyrotechnic Emergency Tensioning Devices
that have been deployed are no longer opera- tional and are unable to perform their inten-
ded protective function. This poses an
increased risk of injury or even fatal injury.
Therefore, have pyrotechnic Emergency Ten-
sioning Devices which have been triggered
immediately replaced at a qualified specialist workshop.
An electric motor is used by PRE-SAFE ®
to
trigger the tightening of the seat belt in haz-
ardous situations. This procedure is reversi-
ble.
If the Emergency Tensioning Devices or air
bags are deployed, you will hear a bang and a small amount of powder may also be released. The
0075restraint system warning
lamp will light up.
Only in rare cases will the bang affect your
hearing. The powder released is generally not hazardous to health, it could however cause
short-term breathing difficulties in people
with asthma or other respiratory problems. In
order to prevent breathing difficulties, you
should leave the vehicle as soon as it is safe to
do so, or open the window.
Air bags and pyrotechnic seat belt tensioners
contain perchlorate material, which may
require special handling or environmental
protection measures. Check with your local
government’s disposal guidelines. California
residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Method of operation During the first stage of a collision, the
restraint system control unit evaluates impor-
tant physical data relating to vehicle deceler- ation or acceleration, such as:
R Duration
R Direction
R Intensity
Based on the evaluation of this data, the
restraint system control unit triggers the belt
tensioners in the event of a frontal or rear
collision.
An Emergency Tensioning Device can only be triggered if:
R the ignition is switched on
R the restraint system components are ready
for operation, see “Restraint system warn-
ing lamp” (Y page 45)
R the belt tongue is inserted into the buckle
on the respective front seat
The belt tensioners in the rear compartment
are triggered independently of the lock status
of the seat belts. 58
Occupant safetySafety

Driving safety systems
Overview of driving safety systems
In this section, you will find information about the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 68)
R BAS (Brake Assist System) (Y page 69)
R BAS PLUS (Brake Assist System Plus)
(Y page 69)
R COLLISION PREVENTION ASSIST (distance
warning function and adaptive Brake
Assist) (Y page 70)
R ESP ®
(E lectronic StabilityProgram)
(Y page 73)
R EBD (Electronic Brake forceDistribution)
(Y page 75)
R ADAPTIVE BRAKE (Y page 76)
R PRE-SAFE ®
Brake (Y page 76)
R STEER CONTROL (Y page 77)Important safety notes
If you fail to adapt your driving style or
become distracted, the driving safety sys-
tems can neither reduce the risk of accident
nor override the laws of physics. Driving
safety systems are merely aids designed to
assist driving. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed and for braking in good time. Always adapt
your driving style to suit the prevailing road
and weather conditions and maintain a safe
distance from the vehicle in front. Drive care-
fully.
i The driving safety systems described only
work as effectively as possible when there
is adequate contact between the tires and
the road surface. Please pay special atten- tion to the notes on tires, recommended
minimum tire tread depths, etc.
(Y page 406).
In wintry driving conditions, always use
winter tires (M+S tires) and if necessary, snow chains. Only in this way will the driv-
ing safety systems described in this section
work as effectively as possible. ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi- cle when braking.
The 0025 ABS warning lamp in the instrument
cluster lights up when the ignition is switched on. It goes out when the engine is running.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 68). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid- ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp (Y page 328) and
display messages which may be shown in the
instrument cluster (Y page 293).
ABS works from a speed of about 5 mph
(8 km/ h), regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently. 68
Driving safety systemsSafety