ECU MERCEDES-BENZ G-CLASS SUV 2013 Service Manual

Safety systems
Problem Possible causes/consequences and
0050 Solutions0027 (USA only)
004D (Canada only)
USA only:
the red
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
Canada only: the
yellow brake system
warning lamp is lit
while
the engine is running. A
warning tone also
sounds. G
WARNING
The brake boosting effect is malfunctioning and the braking
characteristics may be affected.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and

traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 156).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. 0027 (USA only)
004D (Canada only)
USA only:
the red
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
Canada only: the
yellow brake system
warning lamp is lit

while
the engine is running. A
warning tone also
sounds. There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and

traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 156).
X Do not add brake fluid. Topping up will not remedy the
malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. Warning and indicator lamps in the instrument cluster
249
On-board computer and displays Z

Problem Possible causes/consequences and
0050 SolutionsX
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 156).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 291).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures below 248 ‡ (120 †),
drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-start driving. Driving systems
Problem Possible causes/consequences and
0050 Solutions00BA
The red distance
warning lamp lights up
while the vehicle is in
motion.
The distance to the vehicle in front is too small for the speed
selected.
X
Increase the distance. 00BA
The red distance
warning lamp lights up
while the vehicle is in
motion. A warning
tone
also sounds. You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X
Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on DISTRONIC PLUS ( Y page 177).258
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Tires
Problem Possible causes/consequences and
0050 Solutions0077
USA only:
The yellow tire
pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Canada only:
The
yellow tire pressure
monitor warning lamp
(pressure loss) is lit. The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
G WARNING
With tire pressures which are too low, there is a risk of the
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear
excessively

and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to

the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Y page 156).
X Observe the additional display messages in the multifunction
display.
X If there is a flat tire, inspect the tires ( Y page 304).
X Check the tire pressure (Y page 325).
X If necessary, correct the tire pressure. 0077
USA only:
The yellow tire
pressure
monitor warning lamp
(pressure loss/
malfunction)

flashes for
approximately one
minute and then
remains lit. The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
259
On-board computer and displays Z

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 Read the information on qualified
specialist workshops: ( Y page 23).Loading guidelines
G
WARNING
Always fasten items being carried as securely
as possible using cargo tie-down rings and
fastening materials appropriate for

the weight
and size of the load.
In an accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to
vehicle occupants unless the items are
securely fastened in the vehicle.
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
transporting cargo. Do not pile luggage or
cargo higher than the seat backrests.
Never drive a vehicle with the tailgate open.
Deadly carbon monoxide (CO) gases may
enter vehicle interior resulting in
unconsciousness and death. The handling characteristics of a laden
vehicle are dependent on the distribution of
the load within the vehicle. You should
therefore load your vehicle as shown in the
illustrations.
The gross vehicle
weight

(GVW) is the vehicle
weight including fuel, vehicle tool kit, spare
wheel, installed accessories, vehicle
occupants and luggage/cargo.
The gross load limit and the gross vehicle
weight rating (GVWR) for your vehicle must
never be exceeded. The gross load limit and
the GVWR are specified on the vehicle
identification plate on the B-pillar of the
driver's door ( Y page 349).
The load must also be distributed so that the
weight on each axle never exceeds the gross
axle weight rating (GAWR) for the front and
rear axles. The specifications for GVWR and
GAWR are on the vehicle identification plate
on the B-pillar of the driver's door
(Y page 349).
Further information can be found in the
"Loading the vehicle" section ( Y page 328).
Observe the following notes when
transporting a load:
R position heavy loads as far forwards as
possible and as low down in the cargo
compartment as possible.
i Transport loads when possible in the
cargo compartment. You should only use
the cargo compartment enlargement if the
load does not fit in the cargo compartment.
R always place the load against the front or
rear seat backrests.262
Loading guidelines
Stowage and features

If the rear bench seat is not occupied:
X
Insert the belt tongue on the outer seat
belts into the buckle of opposite seat
belt 0043.
X Secure the load with sufficiently strong and
wear-resistant tie downs.
X Pad sharp edges for protection. Stowage areas
Stowage space
Important safety notes G
WARNING
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
storing objects in the vehicle. Put luggage or
cargo in the cargo compartment if possible.
Do not pile luggage or cargo higher than the
seat backrests.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
R braking
R vehicle maneuvers
R an accident
Stowage compartments in the front Glove box X
To open: pull handle 0043 and open glove box
flap 0044.
X To close: fold glove box flap 0044 upwards
until it engages. 0047
Glove box unlocked
0048 Glove box locked
X To lock:(Y page 70) insert the mechanical
key into the lock

and turn it 90° clockwise
to position 0048.
X To unlock:(Y page 70) insert the
mechanical key into the

lock and turn it 90°
counter-clockwise to position 0047.
i The glove box can only be locked and
unlocked using the mechanical key.
Stowage compartment/telephone
compartment under the armrest/in the
center console 0043
Small stowage compartment
0044 Release button for the armrest Stowage areas
263
Stowage and features Z

Stowage compartment/telephone
compartment under the armrest
X
To open: press button 0044.
X Fold up armrest.
i In the stowage compartment, there is a
stowage tray.
X To close: fold the armrest down.
The armrest engages audibly.
Stowage space in the rear Stowage pockets
G
WARNING
Storage bags are intended for storing light-
weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
storage bag. In an accident, during hard
braking, or sudden maneuvers,
they could be
thrown around inside the vehicle and cause
injury to vehicle occupants.
Storage bags cannot protect transported
goods in the event of an accident.
The stowage pockets are located on the rear
side of the front seats. Stowage nets
G
WARNING
Stowage nets are only intended for
transporting light loads such as road maps,
mail, etc.
Do not use stowage nets to transport heavy,
bulky, sharp-edged or fragile objects. In an
accident, during hard braking or during a
change of direction, they could be thrown
around inside the vehicle and cause injury to
vehicle occupants.
Stowage nets cannot protect

the transported
loads in the event of an accident.
The stowage net is in the front-passenger
footwell. Cargo compartment enlargement
Important safety notes G
WARNING
Always lock the seat backrest in its upright
position when the rear seat bench is
occupied, or the extended

cargo volume is not
in use.
Check for secure locking by pushing and
pulling on the seat backrest.
In an accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to
vehicle occupants unless the items are
securely fastened in the vehicle.
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
transporting cargo. G
WARNING
Failure to assure that the seat bench and seat
backrests are locked into place could result
in an increased chance of injury in an
accident.
Never place hands under seat or near any
moving parts while a seat is being adjusted.
For safety reasons, the rear seat bench must
only be adjusted when the vehicle is
stationary.
Never drive a vehicle with the tailgate open.
Deadly carbon monoxide (CO) gases may
enter vehicle interior resulting in
unconsciousness and death.
! Ensure that you remove all containers
from the cup holder in the rear before
folding the seat backrest and the seat
cushion of the rear bench seat forwards.
The rear bench seat is split symmetrically.
The left-hand and right-hand rear seats can
be folded down to increase the cargo
compartment capacity. The following
changes are possible:
R fold the seat backrests forward
R fold the rear bench seat back fully.264
Stowage areas
Stowage and features

Folding the rear bench seat forward
X
Fold rear seat backrest (Y page 265)
forwards.
X Pull catch 0043 in the direction of the arrow.
The corresponding rear bench seat is
released.
X Fold rear bench seat 0044 forwards. 0044
Rear bench seat folded forward
Folding the rear bench seat into an
upright position G
WARNING
Make sure that the rear bench seat and front
seat backrest are correctly engaged in
position.
If the seat backrests or rear bench seat are
not fully engaged and the following occurs:
R sharp braking
R a sudden change of direction
R an accident
the seat backrests or
rear bench seat may fold
forwards and instead of being restrained by
the seats as intended you could be injured by them. Occupants could then also be injured
in the event of an accident, e.g. by objects
being thrown forwards from the cargo
compartment.
X Fold the rear bench seat back.
The seat catch engages audibly.
X Fold the backrest backwards
(Y page 265).
X Install the head restraints (Y page 88). Securing cargo
Important safety notes G
WARNING
Distribute the load on the cargo tie down rings
evenly.
Otherwise, vehicle occupants could be
injured by objects being

thrown around if you:
R brake sharply
R change direction suddenly
R are involved in an accident
Please observe the loading guidelines.
Observe the following notes on securing
loads:
R secure the load using the cargo tie-down
rings.
R do not use elastic straps or nets to secure
a load, as these are only intended as an
anti-slip protection for light loads.
R do not route tie-downs across sharp edges
or corners.
R pad sharp edges for protection.
R only use tie downs that have been checked
in accordance with applicable standards,
e.g. lashing nets or lashing straps.
R fill the spaces between the load and the
cargo compartment walls and the wheel
mountings in a form-locking way. Only use
dimensionally stable transportation aids
for this, such as chocks, wooden fixings or
padding.266
Stowage areas
Stowage and features

Vanity mirror in the sun visor
0043
Sun visor
0044 Bracket
0087 Mirror cover
0085 Mirror light
Mirror lights 0085 will only function if sun
visor 0043 is clipped into bracket 0044.
X Fold down sun visor 0043.
X Fold up mirror cover 0087.
Mirror lights 0085 are switched on
automatically.
Glare from the side 0043
Sun visor
0044 Bracket
0087 Mirror cover
0085 Mirror light
X Fold down sun visor 0043.
X Pull sun visor 0043 from bracket 0044.
X Swing sun visor 0043 to the side. Stowage compartment/ashtray
Stowage compartment/ashtray in the
center console 0043
Cover
0044 Insert
i On new vehicles,
insert 0044
is stored in the
glove box. Install the insert before using the
ashtray.
X To open: press cover 0043 and then release
it.
The ashtray opens.
X To remove the insert: make
sure that

the
engine is switched off and that the parking
brake has been applied to secure the
vehicle against rolling away.
X Move the selector lever to N.
X Press down cover 0043.
Insert 0044 is released.
X Pull insert 0044 upwards and remove it.
X To install the insert: install insert 0044
from
above.
X Push insert 0044 down.
Insert 0044 audibly engages.
X To close: close cover 0043 fully.
i The ashtray is lit up if the low-beam
headlamps are on. Features
269
Stowage and features Z

Ashtray in the rear compartment
X
To open: fold cover 0044 out in the direction
of the arrow.
X To remove the insert: press retaining
lug 0043 and pull insert 0087

upwards and out.
X To install the insert:
install insert 0087
from
above.
X To close: close cover 0044 fully.Cigarette lighter
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unattended in the
vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle

could result in an accident
and/or serious personal injury. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
G
WARNING
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
Make sure any children traveling with you do
not injure themselves or start a fire with the
hot cigarette lighter.
! The 12 V socket in the cigarette lighter
can be used for accessories (up to a
maximum of 180 W), as long as they have
the standard socket type for cigarette
lighters.
Note that the socket

in the cigarette lighter
can be damaged when connecting
accessories, for example by:
R frequent insertion and removal
R sockets that do not fit correctly
A damaged socket can cause the cigarette
lighter to stop working. X
Press in cigarette lighter 0043.
Cigarette lighter 0043 will pop out
automatically when the heating element is
red-hot. 270
Features
Stowage and features

and press the 0051 MB Info call button to
register. If one
of
these steps is not carried
out, it may not be possible to activate the
system.
If you have questions about the activation,
contact one of the following telephone
hotlines:
R USA: Response Center at
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
USA only : shortly after successfully
registering with the mbrace service a user ID
and password will be sent to you by post. You
can use this password to log onto the mbrace
area under "Owners Online" at http://
www.mbusa.com.
The mbrace system is available if:
R it has been activated and is operational.
Activation requires an available mobile
phone network, a valid SIM card and a
subscription to a security service.
R the battery is sufficiently charged.
R the corresponding mobile phone network
is available for transmitting data to the
Customer Center.
i Determining the location of the vehicle on
a map is only possible if there is sufficient
GPS reception and the vehicle position can
be forwarded to the Customer Center.
The mbrace system To adjust the volume during an mbrace call,
proceed as follows:
X
Press the 0081 or 0082 button on the
multifunction steering wheel.
or
X Use the COMAND volume control.
The mbrace system provides three different
services:
R automatic and manual emergency call
R Roadside Assistance call
R MB Info call USA only:
you can find further information
and a description of all available features
under "Owners Online" at http://
www.mbusa.com.
System self-test G
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
R the indicator lamp in the SOS button does
not light up during the system self-
diagnosis.
R the indicator lamp in the 009F Roadside
Assistance button does not light up during
the system self-diagnosis.
R the indicator lamp in the 0051 information
button does not light

up during the system
self-diagnosis.
R the indicator lamp in the SOS button,
009F Roadside Assistance button or 0051
information button continues to be lit red
after the system self-diagnosis.
R the Tele Aid inoperative or Tele Aid
not activated message appears on the
multifunction display after the system self-
diagnosis.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
the event of an emergency, assistance must
be summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R USA: Response Center at
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
After you have switched on the ignition, the
system carries out a self-diagnosis. Features
273
Stowage and features Z