2012 MERCEDES-BENZ G-Class ECU

Symbols
Registered trademarks:
R
BabySmart™ is a registered trademark of
Siemens Automotive Corporation.
R Bluetooth ®
is a registered trademark of
Bluetooth SIG Inc.
R ESP ®
is a registered trademark of Daimler
AG.
R HomeLink ®
is a registered trademark of
Prince, a Johnson Controls Company.
R SIRIUS and associated brands are
registered trademarks
of SIRIUS XM Radio
Inc.
In this Operator's Manual, you will find the
following symbols: G
WARNING
Warning notes draw your attention to hazards
that endanger

your health or life, or the health
or life of others.
! These warning notes draw your attention
to hazards that could cause damage to your
vehicle.
i This symbol indicates useful instructions
or further information that could be helpful
to you.
X This symbol designates an
instruction you must follow.
X Several consecutive symbols
indicate
an

instruction with several
steps.
Y Page This symbol tells you where you
can find further information on a
topic.
YY This symbol indicates a warning or
an instruction that is continued on
the next page.
Display This font indicates a display
message in the multifunction
display/COMAND display.

Data stored in the vehicle
Information about electronic data
acquisition in the vehicle
(Including California Code Supplement
§ 9951)
Your vehicle records electronic data. If your
vehicle is equipped with mbrace 2
data is
transmitted in the event of an accident.
This information serves, for example, to test
vehicle systems after an accident and to
continually improve vehicle safety.
Daimler AG
can access these data and submit
them:
R for safety investigations or vehicle
diagnoses
R with the agreement of the vehicle owner
R on the instruction of prosecuting
authorities
R for use in arbitration of disputes that
involve Daimler AG, its subsidiaries or its
sales and service organizations
R on the basis of other legislation.
Please observe the mbrace 2
order agreement
regarding further details on data that this
system records and transmits.
2 The system is called TELEAID in Canada.22
Introduction

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 20). 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 securing
system
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints
R air bag system components with:
-45
indicator lamp
- front-passenger seat with BabySmart™
automatic child recognition
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. G
WARNING
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 47) for further information on
infants and

children traveling in the vehicle
as well as on child restraint systems. SRS
(Supplemental Restraint System)
Introduction 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 consists of:
R
the + SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R seat belt force limiters
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
+
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. 32
Occupant safety
Safety

passenger air bag if the system recognizes
that the front-passenger seat is empty .
If the front-passenger seat is occupied by an
adult or young person and the
4/
indicator lamp
is lit up, the front-passenger air
bag is disabled. If the front-passenger seat is
recognized as empty, the air bag control unit
will not deploy the front-passenger air bag in
the event of a collision.
Ask your passenger to sit correctly on the
front-passenger seat in an upright position
until the 4/ indicator lamp goes out.
If the 4/ indicator lamp does not go
out, please consult an authorized Mercedes-
Benz Center.
Window curtain air bags G
WARNING
Observe "Important safety notes"
(
Y page 34).
The window

curtain air bags enhance the level
of protection for the head (but not chest or
arms) of the vehicle occupants on the side of
the vehicle on which the impact occurs.
The window curtain air bags are integrated
into the side of the roof frame and deploy in
the area extending from the front door (A-
pillar) to the rear door (C-pillar). Window curtain air bags
:
are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. in a side impact R
regardless of whether the front-passenger
seat is occupied
R independently of seat belt use
R if the vehicle overturns and the system
determines that window curtain air bag
deployment can

offer additional protection
to that provided by the seat belt
R independently of the front air bags
Window curtain air bags : will not deploy in
impacts with deceleration rates which do not
exceed the system's preset deployment
thresholds for vehicle deceleration or
acceleration. You will then be protected by
the fastened seat belt. BabySmart™ air bag deactivation
system
How the air bag deactivation system
works Your vehicle is equipped with a BabySmart™
system.
G
WARNING
According to accident statistics, children are
safer when properly restrained in the rear
seating positions than in the front seating
position. 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 Occupant safety
37
Safety
Z

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
Children 12
years old and under must never
ride in the front seat, except in a Mercedes-
Benz authorized BabySmart™ compatible
child seat, which operates with the
BabySmart™ system installed in the vehicle
to deactivate the front passenger front air
bag when it is installed properly. Otherwise
they will be struck by the air bag when it
inflates in a crash. If this happens, serious
or fatal injury will result.
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
completely eliminate this risk is to never
place a child in a rear-facing child restraint
in the front seat. We therefore strongly
recommend that you always place a child
in a rear-facing child restraint in a backseat.
R If you must install a BabySmart™
compatible rear-facing child restraint on
the front passenger seat because
circumstances require you to do so, make
sure the 4 / indicator lamp is
illuminated, indicating that the front
passenger front air bag is deactivated.
Should the 4 / indicator lamp not
illuminate or go out while the restraint is
installed, please check installation.
Periodically check the 4 / indicator
lamp while driving to make sure the
4 / indicator lamp is illuminated. If
the 4 / 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.
R If you have to 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, and secure child restraint with
the vehicle's seat belt according to the
child seat manufacturer's instructions. G
WARNING
When using a BabySmart™ compatible child
seat on the front passenger seat, the front
passenger front

air bag will not deploy only if
the 4 / indicator lamp remains
illuminated.
Please be sure to check the 4 /
indicator lamp every time you use a
BabySmart™ compatible child seat on the
front passenger seat. Should the 4 /
indicator lamp go out while the restraint is
installed, please check installation. If the
4 / indicator lamp remains out, do not
use the BabySmart™ restraint to transport a
child on the front passenger seat until the
system has been repaired. G
WARNING
The BabySmart™ air bag disabling system
ONLY works with specially adapted child
restraint systems.

It does not work with child
restraint systems that are not compatible with
BabySmart™.
Never place anything between the seat
cushion and the child restraint system (e.g. a
cushion), as this reduces the effectiveness of
the BabySmart™ air bag deactivation system.
The underside of the child restraint system
must lie against the seat cushion of the front-
passenger seat. In the event of an accident,
an incorrectly installed child restraint system
could injure the child instead of offering
protection. 38
Occupant safety
Safety

Problems with the air bag deactivation system
Problem Possible causes/consequences and
M SolutionsThe 45
indicator lamp is on
continuously. A special BabySmart™-compatible child restraint system is
mounted on the front-passenger seat.
The front-passenger air bag is therefore disabled.
There is no BabySmart™-compatible child restraint system
mounted
on
the front-passenger seat. The BabySmart™ system is
malfunctioning.
X Have the BabySmart™ system checked as soon as possible at
an authorized Mercedes-Benz Center. G
WARNING
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. Problem Possible causes/consequences and
M SolutionsThe 45
indicator
lamp

does not
light up and/or stay on
when a BabySmart™-
compatible child
restraint system is
installed on the front-
passenger seat. The BabySmart™ system is malfunctioning.
X
Make sure there is nothing between the seat cushion and the
child restraint system.
X Check that the child restraint system is installed correctly.
X If the 45 indicator lamp does not light up, have the
BabySmart™ system checked as soon as possible at an
authorized Mercedes-Benz Center.
Do not transport a child on the front-passenger seat until the
air bag deactivation system has been repaired. NECK-PRO head restraints
Important safety notes The NECK-PRO head restraints increase
protection to the driver's and the front
passenger's head and neck. The NECK-PRO
head restraints on the driver's and front-
passenger seats are moved forwards and
upwards
in

the event of a rear-end collision of
a certain severity. This provides better head
support. G
WARNING
Do not secure any objects (e.g. coat hangers)
on the

NECK-PRO head restraints. Otherwise,
the NECK-PRO head restraints may not
function properly, or in the event of a rear-end
collision may not be able offer the level of
protection they are designed to provide. G
WARNING
Head restraint covers prevent the NECK-PRO
head restraints from triggering correctly.
Consequently, the

NECK-PRO head restraints
cannot provide the intended level of
protection. Do not use head restraint covers. 40
Occupant safety
Safety

Adjust the seat belt so that the upper part
of the belt is as close as possible to the
center of the shoulder. It should not touch
the neck. Never route the belt under the
shoulder. The height of the belt outlet can
be altered to ensure correct usage.
R The lap belt should be routed as low as
possible across the hips, not across the
abdomen. If
the lap belt is routed across the
abdomen, it could cause serious injuries in
the event of an impact.
R Never route the seat belt over rigid or
fragile objects in or on your clothing, such
as eyeglasses, pens, keys etc, as this could
cause injuries.
R Always ensure that the seat belt is routed
correctly. This is particularly important if
you are wearing loose clothing.
R Only one person should use each seat belt
at any one time. Never use a seat belt to
restrain more than one person or route the
belt around additional objects.
R Never wear seat belts when they are
twisted. Otherwise, in the event of an
impact, the full width of the seat belt is
unavailable to distribute the force of the
impact. The twisted seat belt routed across
your body could cause injuries.
R Pregnant women should also wear a three-
point seat belt. The lap belt must always
pass across your lap as low down as
possible, i.e. across your hips; not across
your abdomen.
R The seat backrest should be set as close to
vertical as possible.
R Check the seat belt during the journey in
order to make sure that it is correctly
positioned.
R Never rest your feet on the dashboard or
the seat. Always keep both feet on the floor
in front of the seat.
R When using a seat belt to secure an infant
restraint system, child restraint system or
a child on a booster seat, always follow the
child seat manufacturer's instructions. G
WARNING
Do
not pass seat belts over sharp edges. They
could tear.
Do not

allow the seat belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the seat belt.
Never attempt to make modifications to seat
belts. This could impair the effectiveness of
the seat belts.
Fastening seat belts Important safety notes
G
WARNING
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 seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint. G
WARNING
Children 12 years old and under must never
ride in the front seat, except in a Mercedes-
Benz authorized BabySmart™ compatible
child seat, which operates with the
BabySmart™ system installed in the vehicle
to deactivate

the front passenger front air bag
when it is installed properly. Otherwise they
will be struck by the air bag when it inflates in
a crash. If this happens, serious or fatal injury
will result. Occupant safety
43
Safety Z

X
Pull the seat belt smoothly from the inertia
reel.
X Engage fixed seat belt tongue ? in
buckle ;. X
Pull movable seat belt tongue C and route
the seat belt across your body. Without
twisting it, guide the shoulder section of the
seat belt across the middle of your shoulder
and the lap section across your hips.
X Engage movable seat belt tongue C in
buckle A.
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body. For more information about releasing the seat
belt with release buttons
B and =, see
"Releasing seat belts" (
Y

page 46).
Special seat belt retractor
All seat belts in the vehicle with the exception
of the driver's are equipped with a special
seat belt retractor, to which a child restraint
system can be secured. For further
information on special seat belt retractors,
see ( Y page 49).
Belt height adjustment You can adjust the belt height on the driver's
and front-passenger seat, as well as on the
outer rear seats.
Adjust the height so that the upper part of the
seat belt is routed across the center of your
shoulder.
X
To raise: slide the belt sash guide upwards.
The belt sash guide engages in various
positions.
X To lower:

pull belt sash guide release :
forwards and hold it.
X Slide the belt sash guide downwards.
X Release belt sash guide release : and
make sure that the belt sash guide has
engaged. Occupant safety
45
Safety Z