MERCEDES-BENZ GL320CDI 2007 X164 Owner's Manual

290 Controls in detail
Driving systems
When the highway level is reached, the in-
dicator lamps3 (
page 283) goes out.
The following message appears in the mul-
tifunction display for 5 seconds:
Parktronic system*
The Parktronic system is an electronic
parking aid and designed to assist the
driver during parking maneuvers. It visually
and audibly indicates the relative distance
between the vehicle and an obstacle.
The Parktronic system is automatically
activated when you

switch on the ignition or start the
engine
and

release the parking brake
and

set the automatic transmission to
positionD,R, orN
iThe vehicle is lowered automatically to the
highway level if the vehicle speed is above
60 mph (96 km/h).
Warning!G
Parktronic is a supplemental system. It is
not intended to, nor does it replace, the
need for extreme care. The responsibility
during parking and other critical maneuvers
always remains with the driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts, or road
curbs). Such objects may not be detected by
the system and can damage the vehicle.
The operational function of the Parktronic
system can be affected by dirty sensors,
especially at times of snow and ice. See
“Cleaning the Parktronic system sensors”
(
page 430).
Interference caused by other ultrasonic
signals (e.g. working jackhammers, car
wash, or the air brakes of trucks) can cause
the system to send erratic indications, and
should be taken into consideration.
Warning!G
Make sure no persons or animals are in the
area in which you are maneuvering. You
could otherwise injure them.

291 Controls in detail
Driving systems
The Parktronic system deactivates at
vehicle speeds exceeding approximately
11 mph (18 km/h). At lower vehicle
speeds the Parktronic system turns on
again.
The Parktronic system also deactivates
when you set the automatic transmission
to positionP or depress the parking brake
pedal.
The Parktronic system monitors the sur-
roundings of your vehicle with six sensors
in the front bumper and four sensors in the
rear bumper.
1Sensors in the front bumperRange of the sensors
To function properly, the sensors must be
free of dirt, ice, snow and slush. Clean the
sensors regularly, being careful not to
scratch or damaging the sensors, see
“Cleaning the Parktronic* system sensors”
(
page 430).
!During parking maneuvers, pay special
attention to objects located above or below the
height of the sensors (e.g. planters or trailer
hitches). The Parktronic system will not detect
such objects at close range and damage to your
vehicle or the object may result.
Ultrasonic signals from outside sources (e.g.
working jackhammers, car wash or the air brakes
of trucks) may impair the operation of the
Parktronic system.

292 Controls in detail
Driving systems
Front sensors
Rear sensors
Minimum distance
If the system detects an obstacle in this
range, all the distance warning segments
illuminate and you hear a warning signal. If
the obstacle is closer than the minimum
distance, the actual distance may no
longer be indicated by the system.Warning indicators
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicator for the
front area is located above the center air
vents in the dashboard. The warning indi-
cator for the rear area is located in the rear
passenger compartment under the roof.
Front area warning indicator
1Left side of the vehicle
2Right side of the vehicle
3Readiness indicatorsEach warning indicator is divided into five
yellow and two red distance segments for
either side of the vehicle. The Parktronic
system is operational when the readiness
indicators3 are illuminated.
The current transmission position deter-
mines which warning indicator will be acti-
vated.
Centerapprox. 40 in (100 cm)
Cornersapprox. 24 in (60 cm)
Centerapprox. 48 in (120 cm)
Cornersapprox. 32 in (80 cm)
Centerapprox. 8 in (20 cm)
Cornersapprox. 6 in (15 cm)
Automatic trans-
mission positionWarning indicator
DFront area activated
R or NFront and rear area
activated
PNeither activated

293 Controls in detail
Driving systems
As your vehicle approaches an object, one
or more distance segments will illuminate,
depending on the distance. When the
seventh red distance segment illuminates,
you have reached the minimum distance.

Front area: An intermittent acoustic
warning lasting a maximum of
2 seconds will sound as the first red
distance segment illuminates and a
constant acoustic warning lasting a
maximum of 2 seconds will sound for
the second red distance segment. The
signal is canceled when the automatic
transmission is set to positionP, or the
parking brake is set.

Rear area: An intermittent acoustic
warning lasting a maximum of
2 seconds will sound as the first red
distance segment illuminates and a
constant acoustic warning lasting a
maximum of 2 seconds will sound for
the second red distance segment. The
signal is canceled when the automatic
transmission is set to positionD, P, or
the parking brake is set.Switching the Parktronic system*
on/off
You can switch off the Parktronic system
manually.
The Parktronic switch is located on the
upper part of the center console.
Vehicles without enhanced off-road
package*
1Parktronic switch
2Indicator lamp
Vehicles with enhanced off-road package*
1Parktronic switch
2Indicator lamp

294 Controls in detail
Driving systems
Switching off
Press Parktronic switch1.
Indicator lamp2 comes on.
Switching on
Press Parktronic switch1 once more.
Indicator lamp2 goes out.Parktronic system* malfunction
If only the red distance segments illumi-
nate and an acoustic warning sounds,
there is a malfunction in the Parktronic
system. The Parktronic system will auto-
matically switch off after 20 seconds and
the indicator lamp in the Parktronic switch
comes on.
Have the Parktronic system checked
by an authorized Mercedes-Benz Light
Truck Center as soon as possible.
If only the red distance segments illumi-
nate and no acoustic warning sounds, the
Parktronic system sensors are dirty (e.g.
slush, snow or ice) or there is an interfer-
ence from other radio or ultrasonic signals
(e.g. working jackhammers, car wash or
the air brakes of trucks). The Parktronic
system will automatically switch off after
20 seconds and the indicator lamp in the
Parktronic switch comes on.
Switch off the ignition (page 42).
Clean the Parktronic system sensors
(
page 430).
Switch on the ignition (page 42).
or
Check the Parktronic system operation
at another location to rule out interfer-
ence from outside radio or ultrasonic
signals.
iThe Parktronic system switches on
automatically when you switch on the ignition
(
page 42).
Vehicles with original equipment Mercedes-Benz
Trailer Hitch Kit:
The rear Parktronic sensor will automatically
disengage when towing a trailer.

295 Controls in detail
Driving systems
Rear view camera*
Warning!G
The rear view camera is only an aid and may
display obstacles from a distorted perspec-
tive or inaccurately, or may not display ob-
stacles at all. The rear view camera does not
relieve you of the responsibility to be cau-
tious, take care and pay careful attention.
The rear view camera may not show objects
which are:

very close to the rear bumper

under the rear bumper

above the tailgate handle
You are responsible for safety at all times
and must continue to pay attention to the
immediate surroundings when parking and
maneuvering. This includes the area behind,
in front of and beside the vehicle. Otherwise
you could endanger yourself or others.
Warning!G
Make sure that no persons or animals are in
or near the area in which you are
parking/maneuvering. Otherwise, they
could be injured.
Warning!G
The rear view camera either will not function
or will not function to its full capability if:

the tailgate is open

it is raining very hard, snowing or foggy

it is night or you are parking/maneuver-
ing your vehicle in an area where it is
very dark

the camera is exposed to a very bright
white light

the immediate surroundings are illumi-
nated with fluorescent light (the display
may flicker)

there is a sudden change in tempera-
ture, e.g. if you drive into a heated ga-
rage from the cold (lens condensation)

the camera lens is dirty or covered

the rear of your vehicle is damaged
In this case, have the position and set-
ting of the camera checked by a quali-
fied specialist workshop.
Mercedes-Benz recommends that you
visit a Mercedes-Benz Light Truck
Center for this purpose.
Do not use the rear view camera in these sit-
uations. Otherwise you could injure yourself
or others and/or damage property including
your vehicle while parking/maneuvering.

296 Controls in detail
Driving systems
The rear view camera is an optical parking
aid. It shows you the area behind the vehi-
cle in the COMAND system display when
reverse gearR is engaged, for example
during parallel parking.
The rear view camera is located near the
tailgate handle.
1Rear view cameraSwitching the rear view camera on and
off
Switch on the ignition (page 42).
Shift the automatic transmission in
positionR (
page 194).
The area behind the vehicle appears in
the COMAND system display.
Shift the automatic transmission
intoP,N orD to switch off the rear
view camera.
iThe area behind the vehicle is shown in the
COMAND system display as a mirror image, like
in the rear view mirror.
iThe image from the rear view camera will no
longer be displayed if you select another
function on the COMAND system while reverse
gearR is engaged. To display the image again,
disengage and reengage reverse gearR.

297 Controls in detail
Loading
Loading
Carriers*
Roof rails
Basic cross bars*
The maximum roof load (
page 559) of
any add-on roof equipment is reduced by
the unladen weight of the basic cross bars
(13.7 Ibs/6.2 kg).
Four keys and an Allen wrench required for
installing and removing are included with
the basic cross bars.
Warning!G
Only use carriers* when the basic cross
bars have been completely mounted. The
left and right roof rails are only stabilized by
means of the basic cross bars mounted.
Follow the manufacturer’s installation
instructions. Otherwise, an improperly at-
tached roof rack system or its load could be-
come detached from the vehicle.
Do not exceed the maximum roof load of
198 lb (90 kg).
Take into consideration that when the roof is
loaded, the handling characteristics are dif-
ferent from those when operating the vehi-
cles without a roof loaded.
!Load the carriers* in such a way that the
vehicle cannot be damaged while driving.
Make sure

the tailgate can be completely opened

the tilt/sliding sunroof can be completely
raised at the rear
iThe following accessories are available for
your Mercedes-Benz:

Roof Cargo Container – Small, Medium, or
Large

Ski and Snowboard Carrier – Standard

Ski and Snowboard Carrier – Deluxe (Only in
connection with corresponding adapter.)
For more information on Mercedes-Benz acces-
sories, contact your authorized Mercedes-Benz
Light Truck Center.
iThe keys and the Allen wrench are stored
with the vehicle tool kit under the cargo compart-
ment floor (
page 495).

298 Controls in detail
Loading
Installing the basic cross bars
iSpare parts are available as Mercedes-Benz
accessories. Contact your authorized
Mercedes-Benz Light Truck Center.
Warning!G
Please follow these installation instructions
carefully. Caution should be exercised to
avoid damage to the vehicle while installing
the basic cross bars. Also, be careful not to
injure yourself or others while installing and
adjusting the basic cross bars or loading
items on them.
Each individual step of the installation in-
structions, the warning notices, the general
safety precautions and the instructions for
use must be followed exactly. If the basic
cross bars are not mounted correctly, they
and the objects attached to them could
come loose from your vehicle and cause an
accident, thereby injuring you and other per-
sons and/or causing damage to property,
including damage to your vehicle.
Warning!G
Every time the basic cross bars are mount-
ed, before you set off on a journey and peri-
odically during longer journeys, check all the
screws on the bars to make sure that they
are secure, and tighten them if necessary.
Repeat these checks at regular intervals as
road-surface conditions dictate, and at least
after every 1500 miles (2500 km) of contin-
uous use.
Otherwise, the basic cross bars, mounted
accessories and the objects attached to
them could come loose from the vehicle
causing an accident, thereby injuring you
and other persons and/or causing damage
to property, including damage to your vehi-
cle.
Do not use lubricant on the screws of the
basic cross bars. The screws could work
loose and the basic cross bars could be-
come detached from your vehicle, together
with the objects attached to them causing
an accident, thereby injuring you and other
persons and/or causing damage to proper-
ty, including damage to your vehicle.
Warning!G
Only install the basic cross bars at the exact
locations designated on the roof rails. The
designated locations for the front basic
cross bars are between the markings en-
graved on the inside of the roof rails
(
page 300). The designated locations for
the rear basic cross bars are between the
gaps on the roof rails (
page 300).

299 Controls in detail
Loading
Otherwise, the basic cross bars
(
page 300), mounted accessories and the
objects attached to them could come loose
from the vehicle causing an accident, there-
by injuring you and other persons and/or
causing damage to property, including dam-
age to your vehicle.
Warning!G
A roof load creates a greater surface area
exposed to the wind and causes the vehicle
to have a higher center of gravity, thereby
changing the vehicle’s driving characteris-
tics. Accordingly, the additional weight on
the roof of the vehicle can have a detrimen-
tal effect on braking, cornering and acceler-
ation.
Never exceed the maximum permissible
roof load or the maximum permissible vehi-
cle weight, even when accessories for the
basic cross bars (e.g. ski racks, bicycle
racks, etc.) are being used. Overloading the
vehicle could result in an accident. When
calculating the weight placed on the roof
please make sure to add the weight of the
basic cross, accessory racks and the load
carried together.
Always adapt your driving style to the road,
traffic and weather conditions, and drive
with added caution when the roof is loaded.
Always drive with extreme care when the
roof rack is loaded. Take into consideration
that when the roof rack is loaded, the han-
dling characteristics are different from
those when operating the vehicles without a
roof rack loaded.Warning!G
Do not use accessories which have not been
approved by Mercedes-Benz for use in con-
junction with these basic cross bars. If
non-approved accessories are used, these
accessories and/or the objects attached to
them could come loose from the vehicle,
thereby injuring you and other persons
and/or causing damage to property, includ-
ing damage to your vehicle.
!Have a second person assist you when
installing the basic cross bars. The vehicle could
otherwise be damaged.
!Objects attached to the basic cross bar
system’s accessories must not be allowed to
restrict the movement of the tilt/sliding sunroof.
The tilt/sliding sunroof could otherwise be dam-
aged when it is raised.