child seat MERCEDES-BENZ GLK-Class 2012 X204 Owner's Manual

Cargo netAttaching ....................................... 218
Important safety information .........217
Cargo tie down rings ......................... 215
Car wash (care) ................................. 244
CD player/CD changer (on-board
computer) .......................................... 173
Cell phone see Mobile phone
Center console
Lower section .................................. 33
Upper section .................................. 32
Central locking
Automatic locking (on-board
computer) ...................................... 177
Locking/unlocking (SmartKey) ........68
Changing bulbs
Brake lamps ................................... 113
High-beam headlamps ...................111
Important safety notes ..................108
License plate lighting .....................113
Low-beam headlamps ....................110
Overview of bulb types ..................109
Parking lamps ................................ 111
Rear fog lamp ................................ 113
Reversing lamps ............................ 113
Side marker lamps (front) ..............112
Standing lamps (front) ...................111
Tail lamps ...................................... 113
Turn signals (front) ......................... 112
Turn signals (rear) ..........................113
Child-proof locks
Important safety notes ....................59
Rear doors ....................................... 60
Children
In the vehicle ................................... 55
Restraint systems ............................ 55
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 58
Special seat belt retractor ...............57
Top Tether ....................................... 58
Cigarette lighter ................................ 222
Cleaning Trailer tow hitch ............................. 247Climate control
Automatic climate control (3-
zone) .............................................. 120
Controlling automatically ...............122
Cooling with air dehumidification ..121
Defrosting the windows .................124
Defrosting the windshield ..............123
Dual-zone automatic climate
control ........................................... 119
Important safety notes ..................118
Indicator lamp ................................ 122
Maximum cooling .......................... 123
Overview of systems ......................118
Problems with cooling with air
dehumidification ............................ 122
Problem with the rear window
defroster ........................................ 124
Rear control panel .........................120
Refrigerant ..................................... 306
Setting the air distribution .............122
Setting the airflow .........................123
Setting the air vents ......................125
Setting the temperature ................122
Switching air-recirculation mode
on/off ............................................ 124
Switching on/off ........................... 121
Switching residual heat on/off ......125
Switching the MONO function on/
off .................................................. 123
Switching the rear window
heating on/off ............................... 124
Clock (on-board computer) ............... 176
Coat hooks ......................................... 218
Cockpit Overview .......................................... 28
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 257
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch .......................... 105
Compass Calibrating ..................................... 236
Calling up ....................................... 235
Setting ........................................... 235
Consumption statistics (on-board
computer) .......................................... 1706Index

K
Key see SmartKey
KEYLESS-GO
Convenience closing feature ............84
Display message ............................ 198
Locking ............................................ 69
Start/Stop button .......................... 131
Starting the engine ........................132
Unlocking ......................................... 69
Key positions
KEYLESS-GO .................................. 131
SmartKey ....................................... 131
Kickdown
Driving tips .................................... 137
Knee bag .............................................. 42
L
Lamps see Warning and indicator lamps
LATCH-type (ISOFIX) child seat
anchors ................................................ 58
License plate lamp Changing bulbs .............................. 113
License plate lamp (display
message) ............................................ 190
Lighting see Lights
Lights
Activating/deactivating the
interior lighting delayed switch-off . 177
Active light function .......................106
Automatic headlamp mode ............104
Cornering light function .................106
Display message ............................ 188
Driving abroad ............................... 102
Fog lamps ...................................... 104
Hazard warning lamps ...................105
High beam flasher .......................... 105
High-beam headlamps ...................105
Light switch ................................... 102
Low-beam headlamps ....................103
Parking lamps ................................ 102
Rear fog lamp ................................ 104
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 176
Switching the daytime running
lamps on/off (switch) ....................103
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 176
Switching the surround lighting
on/off (on-board computer) ..........176
Turn signals ................................... 105
see Changing bulbs
see Interior lighting
Light sensor (display message) ....... 191
LIM indicator lamp Cruise control ................................ 151
Loading guidelines ............................ 212
Locking see Central locking
Locking (doors)
Automatic ........................................ 76
Emergency locking ........................... 77
From inside (central locking
button) ............................................. 76
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 177
Low-beam headlamps Changing bulbs .............................. 110
Display message ............................ 188
Setting for driving abroad
(symmetrical) ................................. 102
Switching on/off ........................... 103
Lumbar support
Adjusting ......................................... 94
Adjusting the 4-way lumbar
support ............................................ 95
M
M+S tires ............................................ 272
Maintenance see ASSYST PLUS service interval
display
Malfunction message
see Display messages
Index11

Rear lampsChanging bulbs .............................. 113
see Lights
Rear view camera
Cleaning instructions .....................247
Function/notes ............................. 157
Rear-view mirror
Anti-glare (manual) ..........................97
Dipping (automatic) .........................99
Rear window defroster
Problem (malfunction) ...................124
Rear window heating
Switching on/off ........................... 124
Rear window wiper
Replacing the wiper blade .............. 116
Switching on/off ........................... 114
Refueling
Fuel gauge ....................................... 29
Important safety notes ..................141
Refueling process ..........................141
see Fuel
Releasing the parking lock
manually (automatic
transmission) ..................................... 140
Remote control Garage door opener .......................231
Programming (garage door
opener) .......................................... 232
Removing/attaching the washer
fluid reservoir .................................... 110
Reporting Malfunctions relevant to safety ........ 24
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 194
Warning lamp ................................. 206
see Fuel
Residual heat (climate control) ........ 125
Restraint system see SRS (Supplemental Restraint
System)
Reverse gear
Engaging (automatic
transmission) ................................. 135
Roadside Assistance (breakdown) .... 21Roller blind
see Roller sunblind
Roller sunblind
Opening/closing .............................. 87
Panorama roof with power tilt/
sliding panel ..................................... 86
Roof carrier ........................................ 220
Roof lining and carpets (cleaning
guidelines) ......................................... 249
Roof load (maximum) ........................ 308
Route see Route guidance (navigation)
Route guidance (navigation) ............ 171
S
Safety Children in the vehicle .....................55
Child restraint systems ....................55
Occupant Classification System
(OCS) ............................................... 44
Overview of occupant safety
systems ........................................... 38
Safety systems
see Driving safety systems
Seat belts
Adjusting the height ......................... 53
Belt force limiters ............................ 54
center rear-compartment seat .........54
Cleaning ......................................... 249
Correct usage .................................. 51
Emergency Tensioning Devices ........ 54
Fastening ......................................... 53
Important safety guidelines .............51
Releasing ......................................... 54
Safety guidelines ............................. 39
Special seat belt retractor ...............57
Warning lamp ................................. 200
Warning lamp (function) ................... 54
Seats
Adjusting (electrically) .....................92
Adjusting lumbar support ................94
Adjusting the 4-way lumbar
support ............................................ 95
Adjusting the head restraint ............93
Cleaning the cover .........................249
Correct driver's seat position ........... 90
14Index

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment 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 Please read the information on qualified
specialist workshops ( Y page 23).
Occupant safety
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
R seat belts
R child restraint systems
R LATCH-type (ISOFIX) child seat anchors
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints
R Air bag system components with:
- PASSENGER AIR BAG OFF indicator lamp
- front-passenger seat with Occupant
Classification System (OCS)
The different air bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are deployed
in an accident.
GWARNING
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead
to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deployment is exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
( Y page 55) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children.
SRS (Supplemental Restraint System)
Introduction
SRS consists of:
R the 6 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
The SRS components are in operational
readiness when the 6 SRS warning lamp
is not lit while the engine is running .
38Occupant safetySafety

RAdjust the front-passenger seat as far back
as possible from the dashboard when the
seat is occupied.
R Occupants, especially children, should
never place their bodies or lean their heads
in the area of the door where the side
impact air bag inflates. This could result in
serious injuries or death should the side
impact air bag be deployed. Always sit as
upright as possible, wear the seat belt
properly and use an appropriately sized
child restraint, infant restraint or booster
seat recommended for the size and weight
of the child.
Failure to follow these instructions can result
in severe injuries to you or other occupants.
If you sell your vehicle, it is important that you
make the buyer aware of this safety
information. Be sure to give the buyer this
Operator's Manual.GWARNING
Accident research shows that the safest place
for children in an automobile is in a rear seat.
A side impact air bag related injury may occur
if occupants, especially children, are not
properly seated or restrained when next to a
side impact air bag which needs to deploy
rapidly in a side impact in order to do its job.
To help avoid the possibility of injury, please
follow these guidelines:
(1)Always sit as upright as possible
and use the seat belts properly.
Make sure that children 12 years
old and under use an appropriately
sized child restraint, infant
restraint, or booster seat
recommended for the size and
weight of the child.(2)Always wear seat belts properly.
The air bags are only deployed if the air bag
control unit detects the need for deployment.
Only in the event of such a situation will they
provide their supplemental protection.
The driver and passenger should always wear
their seat belts. Otherwise, it is not possible
for the air bags to provide their supplemental
protection.
In the event of other types of impacts and
impacts below air bag deployment
thresholds, the air bags will not deploy. The
driver and passengers will then be protected
to the extent possible by a properly fastened
seat belt. A properly fastened seat belt is also
needed to provide the best possible
protection in a rollover.
Air bags provide additional protection; they
are not, however, a substitute for seat belts.
All vehicle occupants must fasten their seat
belts regardless of whether your vehicle is
equipped with air bags or not.
It is important for your safety and that of your
passenger 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.
Front air bags
The front air bags increase protection for the
driver's and front-passenger's head and
chest.
Driver's air bag : deploys in front of the
steering wheel; front-passenger front air
bag ; deploys in front of and above the glove
box.
Occupant safety41SafetyZ

The front-passenger front air bag is
deactivated automatically for certain weight
categories. The 45 indicator lamp
shows you the current status. If the
45 indicator lamp is illuminated, the
front-passenger front air bag is deactivated.
The system does not deactivate:
R the side impact air bag
R the pelvis air bag
R the window curtain air bag
R the Emergency Tensioning Devices
To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in a position that is as upright as possible
with their back against the seat backrest
R with their feet on the floor
If the front-passenger's weight is transferred
to another object in the vehicle (e.g. by
leaning on armrests), OCS may not be able to
approximate the occupant's weight category.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at an
authorized Mercedes-Benz Center.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories which have been approved by
Mercedes-Benz.
Both the driver and the passenger should
always use the 45 indicator lamp as
an indication of whether or not the passenger
is properly positioned.GWARNING
If the 45 indicator lamp illuminates
when an adult or someone larger than a small
individual is in the front-passenger seat, have
the front passenger reposition himself or
herself in the seat until the 45
indicator lamp goes out.
In the event of a collision, the air bag control
unit will not allow front-passenger front air
bag deployment when the OCS has classified
the front-passenger seat occupant as
weighing as much as or less than a typical 12-
month-old child in a standard child restraint
or if the front-passenger seat is classified as
being empty.
When the OCS senses that the front-
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 45 indicator lamp will
illuminate when the engine is started and
remain illuminated, indicating that the front-
passenger front air bag is deactivated.
When the OCS senses that the front-
passenger seat is classified as being empty,
the 45 indicator lamp will illuminate
when the engine is started and remain
illuminated, indicating that the front-
passenger front air bag is deactivated.
When the OCS senses that the front-
passenger seat occupant is classified as
being heavier than the weight of a typical 12-
month-old child seated in a standard child
restraint or as being a small individual (such
as a young teenager or a small adult), the
45 indicator lamp will illuminate for
approximately 6 seconds when the engine is
started and then, depending on occupant
weight sensor readings from the front-
passenger seat, remain illuminated or go out.
With the 45 indicator lamp
illuminated, the front-passenger front air bag
is deactivated. With the 45 indicator
lamp out, the front-passenger front air bag is
activated.
When the OCS senses that the front-
passenger seat occupant is classified as an
adult or someone larger than a small
individual, the 45 indicator lamp will
illuminate for approximately 6 seconds when
the engine is started and then go out,
indicating that the front-passenger front air
bag is activated.
If the 45 indicator lamp is illuminated,
the front-passenger front air bag is
deactivated and will not be deployed.Occupant safety45SafetyZ

If the 45 indicator lamp is not
illuminated, the front-passenger front air bag
is activated and will be deployed:
R in the event of certain frontal impacts
R if impact exceeds a preset deployment
threshold
R independently of the side impact air bags
If the front-passenger front air bag is
deployed, the rate of inflation will be
influenced by:
R the rate of relevant vehicle deceleration as
assessed by the air bag control unit
R the front passenger's weight category as
identified by OCS
For further information, see "Air bag display
messages" ( Y page 187).GWARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seats whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriate infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child.
The infant or child restraint must be properly
secured with the vehicle's seat belt, the seat
belt and Top Tether strap, or lower anchors
and Top Tether strap, fully in accordance with
the child seat manufacturer's instructions.
Occupants, especially children, should always
sit as upright as possible, wear the seat belt
properly and use an appropriately sized infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child.
Children can be killed or seriously injured by
an inflating air bag. Note the following
important information when circumstances
require you to place a child in the front-
passenger seat:
R Your vehicle is equipped with air bag
technology designed to deactivate the
front-passenger front air bag in your vehicle
when the system senses the weight of a
typical 12-month-old child or less along
with the weight of a standard appropriate
child restraint on the front-passenger seat.
R A child in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates in a collision which
could occur under some circumstances,
even with the air bag technology installed
in your vehicle. The only means to eliminate
this risk completely is never to place a child
in a rear-facing child restraint in the front-
passenger seat. We therefore strongly
recommend that you always place a child
in a rear-facing child restraint on the rear
seat.
R If you install a rear-facing child restraint on
the front-passenger seat, make sure the
45 indicator lamp is illuminated,
indicating that the front-passenger front air
bag is deactivated. Should the 45
indicator lamp not illuminate or go out while
the restraint is installed, please check
installation. Periodically check the
45 indicator lamp while driving to
make sure that the 45 indicator
lamp is illuminated. If the 45
indicator lamp goes out or remains out, do
not transport a child on the front-passenger
seat until the system has been repaired.
A child in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates.46Occupant safetySafety

RIf you place a child in a forward-facing child
restraint on the front-passenger seat:
- move the seat as far back as possible
- use the proper child restraint
recommended for the age, size and
weight of the child
- secure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions
R For children larger than the typical 12-
month-old child, the front-passenger front
air bag may or may not be activated.
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
also has to deploy.
The OCS may have detected that the seat:
R was empty or occupied by a person with a
weight of up to or less than that of a typical
12-month-old child seated in a standard
child restraint
R was occupied by a small individual, such as
a young teenager or a small adult
R was occupied by a child in a child restraint
system, whose weight is greater than that
of a typical 12-month-old child.
These are examples of when the OCS
deactivates the front-passenger front air bag.
Deactivation takes place although the
collision fulfills the criteria for deploying the
driver's air bag.
If the SmartKey has been removed from the
ignition lock or is in position 0, indicator lamp
45 : does not light up.
GWARNING
If the red 6 SRS warning lamp in the
instrument cluster and the 45
indicator lamp light up simultaneously, the
OCS is malfunctioning. The front passenger
front air bag will be deactivated in this case.
Have the system checked by qualified
technicians as soon as possible. Contact an
authorized Mercedes-Benz Center.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
R Sit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
R When seated, a passenger should not
position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
approximate the passenger's weight
category.
R Read and observe all warnings in this
chapter.
System self-test
The 45 indicator lamp illuminates
when you:
R turn the SmartKey to position 1 or 2 in the
ignition lock
R on vehicles with KEYLESS-GO, press the
Start/Stop button once or twice
If an adult occupant is properly sitting on the
passenger seat and the OCS classifies the
occupant as an adult, the 45 indicator
lamp illuminates and goes out again after
approximately 6 seconds.
If the seat is not occupied and the OCS
classifies the front passenger seat as being
unoccupied, the 45 indicator lamp
will illuminate and not go out.
Occupant safety47SafetyZ

GWARNING
If the 4 5 indicator lamp does not
illuminate, the system is not functioning. You
must contact an authorized Mercedes-Benz
Center before seating any child on the front
passenger seat.
For more information, see "Problems with the
Occupant Classification System"
( Y page 49).
GWARNING
Never place anything between seat cushion
and child seat (e.g. a pillow), since it reduces
the effectiveness of the OCS. The underside
and rear side child restraint system must be
placed entirely on the seat cushion and the
backrest of the front-passenger seat
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer's instructions for
installation of child restraint systems.
48Occupant safetySafety

Problems with the occupant classification systemProblemPossible causes/consequences and M SolutionsThe 45
indicator lamp
illuminates and
remains illuminated.
The person on the
front-passenger seat:
R has the weight of a
typical adult
R has been determined
by the system not to
be a child.The OCS is malfunctioning.XHave the OCS checked as soon as possible at an authorized
Mercedes-Benz Center.XObserve the additional display messages in the multifunction
display ( Y page 187).GWARNING
If the 45 indicator lamp illuminates and remains illuminated when the weight of a typical
adult or someone larger than a small individual has been detected on the passenger seat, do not
allow any occupant to use the passenger seat until the system has been repaired.
ProblemPossible causes/consequences and M SolutionsThe 45
indicator lamp does not
illuminate and/or does
not remain illuminated.
The front-passenger
seat is:
R unoccupied
R occupied with a
weight up to or less
than a typical 12-
month-old child in a
standard child
restraint systemThe OCS is malfunctioning.XMake sure there is nothing between the seat cushion and the
child seat.XCheck the installation of the child restraint system.XMake sure that no objects are applying additional weight onto
the seat.XIf the 45 indicator lamp does not illuminate, have the
OCS checked as soon as possible at an authorized Mercedes-
Benz Center. Do not transport a child on the front-passenger
seat as long as the OCS is not functioning.XObserve the additional display messages in the multifunction
display ( Y page 187).GWARNING
If the 45 indicator lamp does not illuminate or remains out with the weight of a typical
12-month-old child in a standard child restraint or less, or is unoccupied, on the front-passenger
seat, do not transport a child on the front-passenger seat until the system has been repaired.
Occupant safety49SafetyZ