roof rack MERCEDES-BENZ GL450 2008 X164 Owner's Manual

125 Controls in detail
Locking and unlocking
Limiting opening height of tailgate*
In vehicles with power tailgate*, the tail-
gate opening height can be limited when
transporting goods on a roof rack* (e.g.
presence of an MB roof cargo container*).
When activated, the tailgate opens to
approximately 6.6 ft (2.00 m).
Activate the limiting opening height of
tailgate using the control system
(
page 181).
Closing the tailgate from the inside
You can close the tailgate from the inside
using the remote tailgate switch.
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high) the closing procedure
is stopped and the tailgate reopens.
Press remote tailgate switch1
(
page 124) until tailgate begins to
close.
The tailgate closes. While the tailgate is
closing an acoustic signal sounds.
To interrupt the closing procedure:
Press or pull remote tailgate switch1
(
page 124).
Warning!G
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted switch. Monitor the
closing procedure carefully to make sure no
one is in danger of being injured.
To interrupt the closing procedure, press or
pull the door-mounted remote tailgate
switch or press the Šbutton on the
SmartKey or SmartKey with KEYLESS-GO*.
Even with the SmartKey or the SmartKey
with KEYLESS-GO* removed from the
starter switch or the SmartKey with
KEYLESS-GO* removed from the vehicle,
the remote tailgate switch can be operated.
Therefore, do not leave children unattended
i n t h e v e h i c l e , o r w i t h a c c e s s t o a n u n l o c k e d
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
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295 Controls in detail
Loading
Loading
Carriers*
Roof rails
Crossbars*
The maximum roof load (
page 561) of
any add-on roof equipment is reduced by
the unladen weight of the crossbars
(13.7 Ibs/6.2 kg).
Four keys and an Allen wrench required for
installing and removing are included with
the crossbars.
Warning!G
Only use carriers* when the crossbars have
been completely mounted. The left and right
roof rails are only stabilized by means of the
crossbars 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
198lb (90kg).
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 490).
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297 Controls in detail
Loading
Otherwise, the crossbars (page 298),
mounted accessories and the objects at-
tached to them could come loose from the
vehicle causing an accident, thereby injuring
you and other persons and/or causing dam-
age to property, including damage 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
crossbars (e.g. ski racks, bicycle racks, etc.)
are being used. Overloading the vehicle
could result in an accident. When calculat-
ing the weight placed on the roof please
make sure to add the weight of the cross-
bars, 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 crossbars. If non-ap-
proved 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 crossbars. The vehicle could other-
wise be damaged.
!Objects attached to the crossbar system’s
accessories must not be allowed to restrict the
movement of the tilt/sliding sunroof. The
tilt/sliding sunroof could otherwise be damaged
when it is raised.
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417 Operation
Tires and wheels
Maximum load rating
The maximum load in kilograms and
pounds that can be carried by the tire.
Maximum loaded vehicle weight
The sum of curb weight, accessory weight,
total load limit and production options
weight.
Maximum tire inflation pressure
This number is the greatest amount of air
pressure that should ever be put in the tire
under normal driving conditions.
Normal occupant weight
The number of occupants the vehicle is
designed to seat, multiplied by
68 kilograms (150 lbs).
Occupant distribution
The distribution of occupants in a vehicle
at their designated seating positions.Production options weight
The combined weight of those installed
regular production options weighing over
5 lbs (2.3 kilograms) in excess of those
standard items which they replace, not
previously considered in curb weight or
accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty
battery, and special trim.
PSI (P
ounds per square inch)
A standard unit of measure for air pressure
-> bar, kilopascal (kPa).
Recommended tire inflation pressure
Recommended tire inflation pressure for
normal driving conditions is listed on the
Tire and Loading Information placard locat-
ed on driver’s door B-pillar. Provides best
handling, tread life and riding comfort. If so
equipped, supplemental information per-
taining to special driving situations can be
found on the tire inflation pressure label on
the inside of the fuel filler flap.Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated.
Sidewall
The portion of a tire between the tread and
the bead.
TIN (Tire Identification Number)
Unique identifier which facilitates efforts
by tire manufacturers to notify purchasers
in recall situations or other safety matters
concerning tires and gives purchases the
means to easily identify such tires. The TIN
is comprised of “Manufacturer’s identifica-
tion mark”, “Tire size”, “Tire type code”
and “Date of manufacture”.
Tire load rating
Numerical code associated with the
maximum load a tire can support.
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432 Operation
Vehicle care
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light al-
loy wheels.Plastic and rubber parts
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution.
Wipe with a cloth moistened in a
lukewarm solution.
The surface may temporarily change
color. If this is the case, wait for it to
dry.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows and the power
tilt/sliding sunroof* or rear panorama roof with
hard objects such as an ice scraper or ring.
Doing so may damage the windows.
!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an ex-
tended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased
corrosion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
Warning!G
Do not use cleaners or cockpit care sprays
containing solvents to clean the cockpit or
the steering wheel. Cleaners containing sol-
vents will make the surface porous and vehi-
cle occupants could suffer serious injuries
from plastic parts coming loose in the event
of air bag deployment.

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