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).
300 Controls in detail
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1Key
2Cover cap
3Sticker FRONT (or REAR)
4Screw for clamping claw
5Clamping claw
The front and rear basic cross bars are of
different lengths. Please pay close atten-
tion to stickers3 FRONT and REAR on the
basic cross bars.
Unlock cover cap2 with key1.
Remove cover cap2.
Sticker3 indicating the location,
FRONT or REAR, becomes visible.
Turn screw4 counterclockwise with
the included Allen wrench until
clamping claw5 is wide open.
6Front basic cross bar
7Rear basic cross bar
8Gaps
9Markings
aRoof rails
Place front basic cross bar6 between
markings9 on roof railsa.4Screw for clamping claw
5Clamping claw
aRoof rail
Make sure clamping claw5 lies flush
against the inside of roof raila as
shown in the illustration.
If necessary, adjust clamping width of
basic cross bars (
page 301).
Slightly tighten screw4 on both sides
by turning it clockwise.
iMarkings9 are located on the inside of
each roof rail, indicated by the white lines in the
illustration.
301 Controls in detail
Loading
Place rear basic cross bar7 on roof
railsa i n s u c h a w a y t h a t t h e c l a m p i n g
claws reach into gaps8 (
page 300)
on the roof rails.
Make sure clamping claw5 lies flush
against the inside of roof raila as
shown in the illustration (
page 300).
If necessary, adjust clamping width of
basic cross bars (
page 301).
Slightly tighten screw4 on both sides
by turning it clockwise.
On the front and rear basic cross bars
tighten screws4. Observe a
tightening torque of 4 lb-ft (6 Nm).
Attach cover caps (page 300) and
lock them.
Store key and Allen wrench back into
the storage well (
page 495).
Adjusting the clamping widths of the
basic cross barsThe clamping widths of the basic cross
bars are factory set for your vehicle. These
clamping widths are solely intended for the
designated positions.
Only install the basic cross bars at the des-
ignated locations and pay attention to the
stickers3 FRONT and REAR
(
page 300).
4Screw for clamping claw
5Clamping claw
bScrews for adjusting clamping width
(2 in total for each side)
cCover strip
Warning!G
Have the tightening torque checked after
mounting the basic cross bars. The screws
could come loose if they are not tightened to
a torque of 4 lb-ft (6 Nm).
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).
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.
302 Controls in detail
Loading
Pull cover stripc out of groove until
you see screwsb on each end of the
basic cross bar.
Turn screwsb on both sides counter-
clockwise approximately 2 rotations.
Place the basic cross bar at designated
locations (
page 300) on roof rails.
On both sides, make sure the clamping
claws5 lie flush against the roof rails.
If necessary pull out or push in the
clamping claws5.
Tighten screwsb. Observe a
tightening torque of 4 lb-ft (6 Nm).
The width of the clamping claws is
correctly adjusted.
Press cover stripc piece by piece into
groove of basic cross bar.
Install the basic cross bars as
described (
page 300).Removing the basic cross bars
1Key
2Cover cap
3Sticker FRONT (or REAR)
4Screw for clamping claw
5Clamping claw
Unlock cover cap2 with key1.
Remove cover cap2.
Turn screws for clamping claws5
counterclockwise until the basic cross
bars can be lifted from the roof rails.Shortening the cover strip
The cover strips reduce the wind noise
caused by the basic cross bars. In order to
install add-on roof equipment, it may be
necessary to shorten the cover strips.
cCover strip
Pull cover stripc out of groove.
317 Controls in detail
Useful features
Closing CD changer
1CD changer
Ge ntly pu sh CD c ha nger1 up in direc-
tion of arrow until it engages.
For information on CD changer operation,
see separate COMAND system operating
instructions.Locking and unlocking the glove box
separately
You can lock the glove box separately, e.g.
when the vehicle is in the shop for service.
Take the mechanical key out of the
SmartKey or SmartKey with
KEYLESS-GO* (
page 500).
1Unlocking glove box
2Locking glove box
Insert mechanical key into glove box
lock.
Turn mechanical key to position2 to
lock the glove box.
Turn mechanical key to position1 to
unlock the glove box.
iThe glove box can only be locked or
unlocked with the mechanical key.
324 Controls in detail
Useful features
Cigarette lighter*
Switch on the ignition (page 42).1Cigarette lighter
Open the ashtray (page 323).
Push in cigarette lighter1.
The cigarette lighter will pop out auto-
matically when hot.
Warning!G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
Make sure that any children traveling with
you do not injure themselves or start a fire
with the hot cigarette lighter.
When leaving the vehicle always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, 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 lighter socket can accommodate
12V DC electrical accessories (up to a maximum
of 180 W) designed for use with the standard
“cigarette lighter” plug type. Keep in mind, how-
ever, that connecting accessories to the lighter
socket (for example extensive connecting and
disconnecting, or using plugs that do not fit prop-
erly) can damage the lighter socket. With the
socket damaged, the lighter may no longer be
able to be placed in the heating (pushed-in) posi-
tion, or the lighter may pop out too early with the
lighter not hot enough.
To help avoid damaging the cigarette lighter
socket, we recommend connecting 12V DC elec-
trical accessories designed for use with the stan-
dard “cigarette lighter” plug type to the 12V
power outlets (
page 325) in your vehicle
whenever possible.
iIf the engine is off, and the cigarette lighter
is being used extensively, the vehicle battery
may become discharged.
328 Controls in detail
Useful features
Heated steering wheel*
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk is on the lower left-hand side of
the steering wheel.
1Switching on
2Indicator lamp
3Switching offSwitching on
Switch on the ignition (page 42).
Turn switch at the tip of stalk in the
direction of arrow1.
The steering wheel is heated. Indicator
lamp2 comes on.Switching off
Turn switch at the tip of stalk in the
direction of arrow3.
The heated steering wheel is switched
off. Indicator lamp2 goes out.
For information on the steering wheel, see
“Multifunction steering wheel”
(
page 30).
iThe steering wheel heating is turned off tem-
porarily and the indicator lamp2 remains on
when
the temperature of the vehicle interior is
above 86°F (30°C)
the temperature of the steering wheel is
above 95°F (35°C)
When these conditions do not apply anymore,
steering wheel heating continues.
iIndicator lamp2 flashes or goes out
in case of power surge or undervoltage
in case of a steering wheel heating malfunc-
tion
iThe steering wheel heating switches off
automatically when you remove the SmartKey
from the starter switch or, on vehicles with
KEYLESS-GO*, when you switch off the ignition
(
page 41) and open the driver’s door.
329 Controls in detail
Useful features
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Light Truck Center
for information on the installation of an ap-
proved external antenna. Refer to the radio
transmitter operation instructions regard-
ing use of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone us-
ing the following devices:
mobile phone keypad
COMAND system (see separate operat-
ing instructions)
buttonss andt on the multi-
function steering wheel (
page 158)
Voice Control System* (see separate
operating instructions)
Please note that these functions are only
available with Mercedes-Benz approved
mobile phones.
Warning!G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.
Warning!G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his /her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle.
Only operate the COMAND system
1 if road,
weather and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
1Observe all legal requirements
iVarious mobile phone cradles can be in-
stalled in the front center armrest, see separate
installation instructions for the mobile phone
cradle. These mobile phone cradles can be ob-
tained from an authorized Mercedes-Benz Light
Truck Center.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using. See also separate operating manual for in-
structions on how to use your mobile phone.