ignition MERCEDES-BENZ G-CLASS SUV 2012 Repair Manual

X
Make sure that active Blind Spot Assist
(Y page 220) is activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
light up red for approximately
1.5 seconds and then turn yellow.
Towing atrailer If you attach a trailer, make sure tha
tyou have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Active Blind Spot Assist is
then deactivated. The indicator lamp lights up
yellow in the exterior mirrors and the ActiveBlind Spot Assist currently unavail‐
able See Owner's Manual message
appears in the multifunction display. HOLD function
General notes The HOLD function can assist the driver in the
following situations:
R
when pulling away, especially on steep
slopes
R when manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is cancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
i Do not use the HOLD function when driv-
ing off-road, on steep uphill or downhill gra-
dients or on slippery or loose surfaces. The
HOLD function cannot hold the vehicle on
such surfaces. Activation conditions You can activate the HOLD function if:
R
the vehicle is stationary.
R the engine is running or it has been
switched off by the ECO start/stop func-
tion (AMG vehicles).
R the engine is running.
R the driver's door is closed or your seat belt
is fastened.
R the transmission is in position D,Ror N.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function The vehicle's brakes are applied when the
HOLD function is activated. For this reason,
deactivate the HOLD function while in the car
wash or while towing.
X
Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until ë appears in the multifunction dis-
play.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
Deactivating the HOLD function G
WARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if:
R there is a malfunction in the system or in
the voltage supply
R the HOLD function is deactivated by the
accelerator pedal being depressed, e.g. by
a vehicle occupant
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R the battery is disconnected 196
Driving systemsDriving and parking

There is a risk of an accident.
Before leaving the vehicle, always deactivate
the HOLD function and secure the vehicle
from rolling away.
The HOLD function is deactivated automati-
cally if:
R you accelerate and the transmission is in
position Dor R.
R you shift the transmission to position P.
R you depress the brake pedal again with a
certain amount of pressure until ëdis-
appears from the multifunction display.
R you activate DISTRONIC PLUS.
On steep uphill or downhill gradients or if
there is a malfunction, the transmission may
also be automatically shifted into position P.4MATIC (permanent all-wheel drive)
! Never tow the vehicle with one axle
raised. This may damage the transfer case.
Damage of this sort is not covered by the
Mercedes-Benz implied warranty. All
wheels must remain either on the ground
or be fully raised. Observe the instructions
for towing the vehicle with all wheels in full
contact with the ground.
! When testing the parking brake, operate
the vehicle only briefly (for a maximum of
ten seconds) on a brake test dynamometer.
When doing this, turn the key to position
0 or 1in the ignition .Failure to do this can
cause damage to the drive train or the
brake system.
! A function or performance test should
only be carried out on atwin-axle dyna-
mometer. Before you operate the vehicle
on such a dynamometer, please consult a
qualified workshop .You could otherwise
damage the drive train or the brake system.
4MATIC ensures that all four wheels are per-
manently driven. Together with ESP ®
and
4ETS, it improves the traction of your vehicle whenever a drive wheel spins due to insuffi-
cient grip.
If a drive wheel spins due to insufficient grip:
R
when pulling away, only depress the accel-
erator pedal as far as is necessary.
R accelerate less when driving.
If you fail to adapt your driving style, 4MATIC
can neither reduce the risk of accident nor
override the laws of physics. 4MATIC cannot
take account of road, weather and traffic con-
ditions. 4MATIC is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in lane. Only engage
4MATIC when the current road, weather and
traffic conditions permit it to be done safely,
and adapt your driving style accordingly.
Drive carefully and maintain a suitable dis-
tance to the vehicle in front.
i In wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if
you use winter tyres (M+ Styres), with snow
chains if necessary.
Fo rinformation abou tdriving off-road, see
(Y page 169). PARKTRONIC
Important safety notes !
When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer drawbars .PARK-
TRONIC does not detect such objects when
they are in the immediate vicinity of the
vehicle. You could damage the vehicle or
the objects.
The sensors may not detect snow and
objects which absorb ultrasoni csources.
Ultrasonic sources, such as an automatic
car wash, a lorry's compressed-air brakes
or a pneumatic drill, could cause PARK-
TRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain. Driving systems
197Driving and parking Z

PARKTRONIC is an electronic parking aid with
ultrasonic sensors
.Itindicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is only an aid. It is not a replace-
ment for your attention to your immediate
surroundings. You are always responsible for
safe manoeuvring, parking and exiting a park-
ing space. Check in front, behind and to the
sides of the vehicle before manoeuvring,
parking or exiting a parking space. There
must not be any persons, animals or objects
in the area in which yo uare manoeuvring.
PARKTRONIC cannot identify any persons or
objects outside of the detection range. As a
result, PARKTRONIC cannot warn you about
objects in this area.
PARKTRONIC is activated automatically if
you:
R switch on the ignition
R shift the transmission to position D,Ror N
R release the parking brake
PARKTRONIC is deactivated at speeds above
18 km/h. It is reactivated at lower speeds.
PARKTRONIC monitors the area around your
vehicle using six sensors in the front bumper
and four sensors in the rear bumper.
Range of the sensors General notes
:
Example: sensors in the front bumper,
left-hand side Side view
Top view
The sensors must be free of dirt, ice and
slush. Otherwise, they may not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
(Y
page 298).
Front sensors Centre Approximately 100 cm
Corners Approximately 60 cm
Rear sensors
Centre Approximately 90 cm
(from spare wheel)
Corners Approximately 80 cm
Minimum distance
Centre Approximately 20 cm
Corners Approximately 20 cm
If there is an obstacle withi
nthis range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown. 198
Driving systemsDriving and parking

Warning displays
Warning display for the front area
:
Segments on the left-hand side of the
vehicle
; Segments on the right-hand side of the
vehicle
= Segments showing operational readiness
The warning displays show the distance
between the sensors and the obstacle. The
warning display for the front area is located
on the dashboard above the centre airv ents.
The warning display for the rear area is loca-
ted on the roof lining in the rear compart-
ment.
The warning display for each side of the vehi-
cle is divided into five yellow and two red seg-
ments. PARKTRONIC is operational if yellow
segments showing operational readiness =
light up.
The selected transmission position and the
direction in which the vehicle is rolling deter-
mine which warning display is active when the
engine is running. Transmission
position Warning display
D
Front area activated
R,
Nor the vehicle
is rolling back-
wards Rear and front areas
activated
P
No areas activated One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distance from the obstacle.
From the:
R
sixth segmen tonwards, you will hea ran
intermittent warning ton efor approx-
imately two seconds.
R seventh segment onwards, you will hear a
warning tone for approximately two sec-
onds. This indicates that you have now
reached the minimum distance.
Deactivating/activating PARKTRONIC :
Indicator lamp
; To deactivate/activate PARKTRONIC
If indicator lamp :lights up, PARKTRONIC is
deactivated.
i PARKTRONIC is automatically activated
when you turn the key to position 2in the
ignition lock.
Towing atrailer PARKTRONIC is deactivated for the rea
rarea
when you establish an electrical connection
between yourv ehicle and a trailer. Driving systems
199Driving and parking Z

Problems with PARKTRONIC
Problem Possible causes/consequences and
M Solutions
Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after a few sec-
onds, and the indicator
lamp in the PARK-
TRONIC button lights
up. PARKTRONIC has malfunctioned and has switched off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is deacti-
vated after a few sec-
onds. The PARKTRONIC sensors are dirty or there is interference.
X
Cleant he PARKTRONIC sensors (Y page 298).
X Switch the ignition back on. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in a different location. Reversing camera
Important safety notes The reversing camera is only an aid. It is not
a replacement for your attention to your
immediate surroundings. You are always
responsible for safe manoeuvring and park-
ing. When manoeuvring or parking, make sure
that there are no persons, animals or objects
in the area in which you are manoeuvring.
Under the following circumstances, the
reversing camera will not function, or will
function in a limited manner:
R the rear door is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light
R if the area is lit by fluorescent light or LED
lighting (the display may flicker) R
if there is a sudden change in temperature,
e.g. when driving into a heated garage in
winter
R if the camera lens is dirty or obstructed
R if the rear of your vehicle is damaged. In
this event, have the camera position and
setting checked at a qualified specialist
workshop. Mercedes-Ben zrecommends
that you use a Mercedes-BenzS ervice
Centre for this purpose. 200
Driving systemsDriving and parking

Activating/deactivating the reversing
camera
:
Reversing camera X
To activate: make sure that the key is in
position 2in the ignition lock.
X Make sure that the "Reversing camera"
function is selected in COMAND Online;
see the separate operating instructions for
COMAND Online.
X Engage reverse gear.
The area behind the vehicle is shown with
guide lines in the COMAND display.
X To change the function mode: using the
COMAND controller, select symbol :for
the "Reverse parking" function or sym-
bol ;for "Coupling up a trailer" (see the
separate COMAND Online operating
instructions).
The symbol of the selected function is high-
lighted. To deactivate:
the reversing camera is deac-
tivated if you:
R shif tthe transmission to position P
R drive forward ten metres
R shift the transmission from Rto another
position (after 15 seconds)
R drive forwards at a speed of over
10 km/h Off-road driving systems
Transfer case
General notes The vehicle has permanent all-wheel drive.
The front and rear axles are constantly driven.
For further information on driving off-road,
see (Y
page 169).
Shift ranges G
WARNING
If you do not wait for the transfer case gear
change process to complete, the transfer
case could remain in the neutral position. The
power transmission to the driven wheels is
then interrupted. There is a danger of the
vehicle rolling away unintentionally. There is
a risk of an accident.
Wait until the transfer case shift process is
completed.
Do not turn off the engine while changing gear
and do not shift the automatic transmission
to another gear. Off-road driving systems
201Driving and parking Z

X
Press LOW RANGE button ;.
When the shift procedure is complete, the
LOW RANGE transfer case position appears
in the multifunction display.
Indicator lamp :lights up.
X Shift the transmission to position D.
Switching off the off-road gear ratio G
WARNING
When the transfer case is in the neutral posi-
tion, power transmission to the driven wheels
is interrupted. As a result, the vehicle could
roll away .There is a risk of an accident.
Secure the vehicle with the parking brake, and
on uphill or downhill gradients, also secure it
with a device such as a wheel chock.
! Only carry out the gear selection if:
R the engine is running.
R the vehicle is rolling.
R the automatic transmission is in selector
lever position N.
R you are driving at less than 70 km/h.
You could otherwise damage the transfer
case.
X Press button ;.
When the shift procedure is complete, the
HIGH RANGE transfer case position appears
in the multifunction display.
Indicator lamp :goes out.
If the gear change is not completed, the fol-
lowing messages could appearint he display:
R TC shift conditions not fulfilled You have not met one or more shift condi-
tions.
R TC NEUTRAL on The transfer case has cancelled the gear
change process and is in N.TheN transfer
case position appears in the multifunction
display.
R TC shift cancelled The transfer case has not performed the
gear change process. X
Repeatt he gear change process.
Make sure to meet all conditions for chang-
ing gears.
R TC Malfunction Visit workshop There is a malfunction in the transfer case.
X Do not shift the transfer case.
X Have the vehicle checked as soon as pos-
sible at a qualified specialist workshop.
Shifting to neutral G
WARNING
When the transfer case is in the neutral posi-
tion, power transmission to the driven wheels
is interrupted. As a result, the vehicle could
roll away.T here is a risk of an accident.
Secure the vehicle with the parking brake, and
on uphill or downhill gradients, also secure it
with a device such as a wheel chock.
X Turn the key to position 2(Ypage 143) in
the ignition lock.
X Apply the parking brake.
X Depress the brake pedal.
X Move the selector lever to position
N(Y page 149).
X Press and hold LOW RANGE button ;for
approximately 10 seconds.
Once the gear change procedure is com-
plete, TC in neutral message appears in
the multifunction display for approximately
5s econds.
If the gear change is not completed, the fol-
lowing messages could appear in the display
(Y page 241).
i If the transfer case is in Neutral, the key
is in the ignition lock and you open the driv-
er's door, the TC in neutral message
appears in the multifunction display. If you
then release the parking brake, a warning
tone will sound. Off-road driving systems
203Driving and parking Z

Operating the on-board computer
Overview :
Multifunction display
; To switch on LINGUATRONIC, see the sep-
arate operating instructions
= Right control panel
? Left control panel
A Back button
X To activate the on-board computer: turn
the key to position 1(Ypage 143) in the
ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. Left control panel =
; R
Calls up the menu and menu bar 9
:
Press briefly:
R
Scrolls through lists
R Selects a submenu or function
R In the Audio menu: selects a
stored station, an audio trac kor
a video scene
R In the Tel (telephone) menu:
switches to the phone book and
selects a name or telephone
number 9
:
Press and hold:
R
In the Audio menu: selects the
previous/next statio norselects
an audio trac koravideo scene
using rapid scrolling
R In the Tel (Telephone) menu:
starts rapid scrolling if the phone
book is open a R
Confirms selection/display mes-
sage
R In the Tel (telephone) menu:
switches to the telephone book
and starts dialling the selected
number
R In the Audio menu: stops the
station search function at the
desired station Right control panel
~ R
Rejects or ends a call
R Exits telephone book/redial
memory 6 R
Makes or accepts a call
R Switches to the redial memory Displays and operation
213On-board computer and displays Z

R
Service menu (Y
page 220)
R Settings menu (Y
page 221)
R AMG menu in AMG vehicles (Y
page 225)
The Audio ,
Navi and
Tel menus differ slightly
in vehicles with an audio system and in vehi-
cles with COMAND Online. The examples
given in this Owner's Manual apply to vehicles
equipped with COMAND Online. Trip menu
Standard display X
Press and hold the %button on the
steering wheel until the Trip menu with
trip meter :and total distance
recorder ;is shown.
Trip computer "From start" or "From
reset" Example: "From start" trip computer
:
Distance
; Time
= Average speed
? Average fuel consumption
X Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press 9or: to select From start or
From reset .The values in the
From start submenu are
calculated from the start of a journey whilst
the values in the From reset submenu are
calculated from the last time the submenu
was reset (Y page 216).
The From start trip computer is automati-
cally reset when:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 kilometres have been exceeded.
The From reset trip computer is automati-
cally reset if the value exceeds 9,999 hours
or 99,999 kilometres.
Displaying the range and current fuel
consumption :
Approximate range
; Current fuel consumption (not for AMG
vehicles)
X Press the =or; button on the steer-
ing wheel to select the Trip menu.
X Press the 9or: button to select the
current fuel consumption (not for AMG
vehicles) and the approximate range.
The approximate range which can be covered
depends on the fuel level and your current
driving style. If there is only a small amount
of fuel left in the fuel tank, the display shows
a vehicle being refuelled Cinstead of
range. Menus and submenus
215On-board computer and displays Z

Lights
Setting the daytime driving lights
The Day lights function can only be
switched on with the engine turned off.
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press ato confirm.
X Press :or9 to select the Daytime driving lights: function.
If the Daytime driving lights have
been switched on, the cone of light and the
W symbol in the multifunction display
are shown in red.
X Press the abutton to save the setting.
Further information on daytime driving lights
(Y page 105).
Surround lighting and exterior lighting
delayed switch-off
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press ato confirm.
X Press :or9 to select the Sur‐ round lighting function.
When the Surround lighting function is
activated, the cone of light in the multi-
function display is shown in red.
X Press the abutton to save the setting.
Deactivating delayed switch-off of the exte-
rior lighting temporarily:
X Before leaving the vehicle, turn the key to
position 0(Ypage 143) in the ignition lock.
X Turn the key to position 2in the ignition
lock (Y page 143).
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine. If you have activated the
Surround light‐ ing function and the light switch is set to
Ã, the following functions are activated
when it is dark:
R Surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the key. If you start the engine, the
surround lighting is switched off and auto-
matic headlamp mode is activated
(Y page 105).
R Exterior lighting delayed switch-off: the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the boot lid,
the exterior lighting goes off after
15 seconds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the fol-
lowing light up:
R side lamps
R foglamps
R dipped-beamh eadlamps
R daytime driving lights
R surround lighting in the exterior mirrors
Activating/deactivating the interior light-
ing delayed switch-off
If you activate the Light. delay function,
the interior lighting remains on for
20 seconds after you remove the key from the
ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press ato confirm.
X Press :or9 to select the Light. delay function.
When the Light. delay function is acti-
vated, the vehicle interior is displayed in
red in the multifunction display.
X Press the abutton to save the setting. 222
Menus and submenusOn-board computer and displays