2008 MERCEDES-BENZ R350 buttons

201 Controls in detail
Automatic transmission
Steering wheel gearshift control
With drive positionD selected, you can
limit or extend the gear range.
1Left shift button: limiting gear range
2Right shift button: extending gear
rangeLimiting gear range
Briefly press left shift button1.
The transmission will shift to the next
lower gear as permitted by the shift
program. This action simultaneously
limits the gear range of the transmis-
sion (
page 199).
!Allow engine to warm up under low load use.
Do not place full load on the engine until the
operating temperature has been reached.
Shift into reverse gearR or park positionP only
when the vehicle is stopped.
Avoid spinning of a drive wheel for an extended
period when driving off on slippery road
surfaces. This may cause serious damage to the
drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
iYou cannot shift with the steering wheel
gearshift control buttons when the transmission
in positionP,N orR.
Warning!G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.
iTo avoid overrevving the engine when down-
shifting, the transmission will not shift to a lower
gear if the engine’s max. speed would be
exceeded.

213 Controls in detail
Climate control
Deactivating
Press button
orQ
(
page 210).
The indicator lamp on buttonU
goes out. The automatic operation of
air volume switches off. The selected
blower speed is shown in the air
volume displayb (
page 210).
or
Press air distribution button 5,9,
ora (
page 210).
The indicator lamp on buttonU
goes out. The automatic operation of
air distribution switches off.
Setting the temperature
Use temperature controls1 and7
(
page 210) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
The climate control will adjust to the set
temperature as fast as possible.
Increasing
Turn temperature control1and/or
7 (
page 210) slightly clockwise.
The climate control system will corre-
spondingly adjust the interior air
temperature.
Decreasing
Turn temperature control1 and/or
7 (
page 210) slightly counterclock-
wise.
The climate control system will corre-
spondingly adjust the interior air
temperature.
Adjusting air distribution
Press air distribution button5,9, ora
(
page 210) to adjust the air distribution.
The following symbols are found on the
buttons:
Press the desired air distribution
button5,9, ora (
page 210).
The indicator lamp on buttonU
goes out.
SymbolFunction
aDirects air through the center
and side air vents
ZDirects air to the windshield
and side air vents
YDirects air to the footwells and
side air vents

228 Controls in detail
3-zone automatic climate control*
Adjusting air distribution
Use the air distribution buttons3,h,
orj for the driver’s side, or7,b, orc
(
page 224) for the passenger side to
separately adjust the air distribution on
each side of the passenger compartment.
The following symbols are found on the
buttons:
Press the desired air distribution
button (
page 224).
The indicator lamp on the desired
button comes on.
Adjusting the air distribution for the
center and side air vents
Opening the center air vents
Turn thumbwheels 6 and 7
(
page 222) upward.
The corresponding center air vents on
the left and right are open.
Closing the center air vents
Turn thumbwheels 6 and 7
(
page 222) downward.
The corresponding center air vents on
the left and right are closed.Opening the side air vents
Turn thumbwheels 3 and 8
(
page 222) upward.
The corresponding side air vents on the
left and right are open.
Closing the side air vents
Turn thumbwheels 3 and 8
(
page 222) downward.
The corresponding side air vents on the
left and right are closed.
SymbolFunction
Driver’s
sidePassen-
ger side
6ZDirects air to the
windshield and
side air vents
7aDirects air through
the center, side
and rear passen-
ger compartment
air vents
8YDirects air to the
footwells and side
air vents

230 Controls in detail
3-zone automatic climate control*
Press button
to decrease or
buttonQ to increase the air volume
(
page 224) to the desired level.
The air volume decreases/increases to
the next lower/higher blower speed
and heating switches to the tempera-
ture that was set before the front de-
froster was switched on.
The indicator lamp on button|
goes out. The indicator lamp on
button9 comes on.
or
Turn temperature
control1and/or9 (
page 224)
slightly in any direction.
Heating switches to the temperature
that was set before the front defroster
was switched on.
The indicator lamp on button|
goes out. The indicator lamp on
button9 comes on.Deactivating
Press button| (page 224).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.Windshield fogged on the outside
Switch the windshield wipers on
(
page 59).
Press buttonU (page 224).
The indicator lamp on button U
goes out. Air volume and air
distribution are controlled separately
for each zone.
If the automatic air distribution and air
volume are switched off:
Press buttons8 and Y
(
page 224).
iThe air conditioning compressor remains on
even if the indicator lamp in button| goes
out. This helps to prevent the windshield from
fogging.
iTo switch off, you can also press
button´ orU (
page 224).
iKeep this setting selected only until the
windshield is clear again.

319 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
approved external antenna. Refer to the
radio transmitter operation instructions
regarding use of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone
using 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)
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,
possibly resulting in an accident and/or
serious personal injury.
Warning!G
Please do not forget that your primary
responsibility 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
recommend that you pull over to a safe loca-
tion and stop before placing or taking a
telephone 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
mobile 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
(approximately 14 m) every second.
1Observe all legal requirements.
iVarious mobile phone cradles can be
installed in the front center armrest, see
separate installation instructions for the mobile
phone cradle. These mobile phone cradles can
be obtained 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
instructions on how to use the mobile phone.

327 Controls in detail
Useful features
When the connection is established, the
message
Call Connected appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and
location (subject to availability of cellular
and GPS signals).
A voice connection between the Customer
Assistance Center representative and the
occupants of the vehicle will be estab-
lished. Information regarding the operation
of your vehicle, the nearest
Mercedes-Benz Light Truck Center or
Mercedes-Benz USA products and services
is available to you.
For more details concerning the Tele Aid
system, please visit www.mbusa.com and
use your ID and password (sent to you sep-
arately) to learn more (USA only).
iWhile the call is connected, you can change
to the navigation menu by pressing the NAV
button on the COMAND system headunit.
iThe indicator lamp in the Information
button¡ remains illuminated in red for
approximately 10 seconds during the system
self-check after switching on the ignition
(together with the SOS button and the Roadside
Assistance button•).
See system self-check (
page 323) if the
indicator lamp does not come on in red or stays
on longer than approximately 10 seconds.
If the indicator lamp in the Information
button¡ is flashing continuously and there
was no voice connection to the Response Center
established, then the Tele Aid system could not
initiate an Information call (e.g. the relevant
cellular phone network is not available).
The message
Call Failed appears in the
multifunction display.
Information calls can be terminated using
thet button on the multifunction steering
wheel or the END button on the COMAND
system headunit.
!If the indicator lamps do not start flashing
after pressing one of the buttons or remain
illuminated (in red) at any time, the Tele Aid
system has detected a malfunction or the
service is not currently active, and may not
initiate a call. Visit your authorized
Mercedes-Benz Light Truck Center and have the
system checked or contact the Response Center
at 1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada) as soon as
possible.

330 Controls in detail
Useful features
Programming the integrated remote
control
Step 1:
Switch on the ignition (page 39).Step 2:
If you have previously programmed a
signal transmitter button and wish to
retain its programming, proceed to
step 3.
If you are programming the integrated
remote control for the first time,
press and hold the two outer signal
transmitter buttons2 and4 and
release them only when indicator
lamp1 begins to flash after approxi-
mately 20 seconds (do not hold the
button for longer than 30 seconds).
This procedure erases any previous
settings for all three channels and ini-
tializes the memory.
If you later wish to program a second
and/or third hand-held transmitter to
the remaining two signal transmitter
buttons, do not repeat this step and
begin directly with step 3.Warning!G
Before programming the integrated remote
control to a garage door opener or gate
operator, make sure people and objects are
out of the way of the device to prevent po-
tential harm or damage. When programming
a garage door opener, the door moves up or
down. When programming a gate operator,
the gate opens or closes.
Do not use the integrated remote control
with any garage door opener that lacks
safety stop and reverse features as required
by U.S. federal safety standards (this
includes any garage door opener model
manufactured before April 1, 1982).
A garage door that cannot detect an object
– signaling the door to stop and reverse –
does not meet current U.S. federal safety
standards.
When programming a garage door opener,
park the vehicle outside the garage.
Do not run the engine while programming
the integrated remote control. Inhalation of
exhaust gas is hazardous to your health. All
exhaust gas contains carbon monoxide
(CO), and inhaling it can cause unconscious-
ness and possible death.

331 Controls in detail
Useful features
Step 3:
Hold the end of the hand-held remote
control5 of the device you wish to
train approximately 2 to 5 in
(5 to12 cm) away from the signal trans-
mitter button (2, 3 or4) to be pro-
grammed, while keeping indicator
lamp1 in view.
Step 4:
Using both hands, simultaneously
press hand-held remote control
button6 and the desired signal trans-
mitter button (2, 3 or4). Do not
release the buttons until step 5 is com-
pleted.
Indicator lamp1 will flash, first slowly
and then rapidly.Step 5:
After indicator lamp1 changes from a
slow to a rapidly flashing light, release
the hand-held remote control button
and the signal transmitter button.
Step 6:
Press and hold the just-trained signal
transmitter button (2, 3 or4) and
observe indicator lamp1.
If indicator lamp1 stays on
constantly, programming is complete
and your device should activate when
the respective signal transmitter
button (2, 3 or4) is pressed and
released.
Step 7:
To program the remaining two signal
transmitter buttons, repeat the steps
above starting with step 3.Rolling code programming
To train a garage door opener (or other
rolling code devices) with the rolling code
feature, follow these instructions after
completing the “Programming” portion
(steps 1 through 6) of this text. (A second
person may make the following training
procedures quicker and easier.)
Step 8:
Locate “training” button on the garage
door opener motor head unit.
Exact location and color of the button
may vary by garage door opener brand.
Depending on manufacturer, the
“training” button may also be referred
to as “learn”or “smart” button. If there
is difficulty locating the transmitting
button, refer to the garage door opener
Operator’s Manual.
iIndicator lamp1 flashes immediately the
first time the signal transmitter button is
programmed. If this button has already been
programmed, the indicator lamp will only start
flashing after 20 seconds.
iIf indicator lamp1 flashes rapidly for about
2 seconds and then turns to a constant light,
continue with programming steps 8 through 12
as your garage door opener may be equipped
with the “rolling code” feature.