Page 208 of 561

207 Controls in detail
Automatic transmission
The transmission will shift to the next
higher gear as permitted by the shift
program. This action simultaneously
extends the gear range of the
transmission.
Canceling gear range limit
Press and hold the outside2 of one of
the buttons on the steering wheel
until
Dreappears in the multifunction
display.
The transmission will shift from the current
gear range directly to gear rangeD.
Shifting into optimal gear range
Press and hold the inside1 of one of
the buttons on the steering wheel.
The transmission will automatically select
the gear range suited for optimal
acceleration and deceleration. This will
involve shifting down one or more gears.Emergency operation (Limp Home
Mode)
If vehicle acceleration becomes less re-
sponsive or sluggish or the transmission
no longer shifts, the transmission is most
likely operating in limp home (emergency
operation) mode. In this mode only second
gear and reverse gear can be selected.
Stop the vehicle in a safe location.
Shift to park positionP.
Turn off the engine.
Wait at least 10 seconds before
restarting.
Restart the engine.
Shift to drive positionD (for second
gear) or reverse gearR.
Have the transmission checked at an
authorized Mercedes-Benz Light Truck
Center as soon as possible.
Page 219 of 561
218 Controls in detailClimate control
1
Temperature control, left
2
Air distribution and air volume
(automatic, manual)
3
Front defroster
0USA only
P Canada only
4
Increasing air volume
5
Air distribution (directs air through
the windshield and side air vents)
6
Rear air conditioning on/off
:USA only
7
Temperature control, right
8
AC cooling on/off (A/C)
Residual heat/ventilation (REST)
9
Air distribution (directs air through
center and side air vents)
a
Air distribution (directs air through
the footwells and side vents)
b
Air volume display
c
Decreasing air volume
d
Rear window defroster
1 USA only
F Canada only
e
Air recirculation
f
Interior temperature sensor
g
Climate control on/off
Page 222 of 561

221 Controls in detail
Climate control
Operating the climate control system in automatic modeActivating
Press buttonU (
page 218) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.
Use temperature controls1 and7
(page 218) to separately adjust the
air temperature on each side of the
passenger compartment.
The interior air temperature is adjusted
automatically.Deactivating
Press button orQ
(page 218).
The indicator lamp on theU button
goes out. The automatic operation of
air volume switches off. The selected
blower speed is shown in the air
volume displayb (
page 218).
or
Press air distribution button 5,9,
ora (
page 218).
The indicator lamp on the buttonU
goes out. The automatic operation of
air distribution switches off.
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary
(page 227).
iThe settings for the passenger side are
also used for the rear passenger com-
partment.
Page 223 of 561

222 Controls in detailClimate controlSetting the temperature
Use temperature controls1 and7
(page 218) 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 control1 and/or
7 (
page 218) slightly clockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing
Turn temperature control1 and/or
7 (
page 218) slightly counterclock-
wise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Adjusting air distribution
Press air distribution button5,9, ora
(page 218) to adjust the air distribution.
The following symbols are found on the
buttons:
Press the desired air distribution
button5,9, ora (
page 218).
The indicator lamp on the buttonU
goes out.
Adjusting air volume
Five blower speeds are available.
Press button to decrease or
buttonQ to increase air volume
(page 218) to the desired level.
The indicator lamp on buttonU
(page 218) goes out. The automatic
operation of air volume switches off.
The selected blower speed is shown in
the air volume display
b(page 218).
Adjusting air volume for the center and
side air vents
Opening the center air vents
Turn thumbwheels 5 and 6
(page 216) upward.
The corresponding center air vents on
the left and right are open.
Symbol
Function
a
Directs air through the center
and side air vents
Z
Directs air to the windshield
and side air vents
Y
Directs air to the footwells and
side air vents
Page 233 of 561
232 Controls in detail3-zone automatic climate control*
1
Temperature control, driver’s side
2
Air distribution and air volume
(automatic, manual)
3
Air distribution, driver’s side
4
Front defroster
0USA only
P Canada only
5
Increasing air volume
6
Rear window defroster
1 USA only
F Canada only
7
Air distribution, passenger side
8
Rear climate control
>USA only
™Canada only
9
Temperature control, passenger side
a
Automatic climate control on/off
b
Air distribution, passenger side
c
Air distribution, passenger side
d
AC cooling on/off
Residual heat/ventilation
e
Display
f
Decreasing air volume
g
Air recirculation
h
Air distribution, driver’s side
j
Air distribution, driver’s side
k
Interior temperature sensor
l
Adopting driver’s side settings for all
zones
Page 235 of 561

234 Controls in detail3-zone automatic climate control*
Deactivating the climate control system
Deactivating
Press button´ (
page 232) until
the display is cleared.Reactivating
Press buttonU(
page 232).
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the fil-
ter before its scheduled interval. A
clogged filter will reduce the air volume
to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off, see
“Summer opening feature”
(page 251). The automatic climate
control will then adjust the interior
temperature to the set value much fast-
er.
Keep the air intake grille in front of the
windshield free of snow and debris.
Warning!
G
When the automatic climate control is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
iYou can also press button´
(page 232) on the automatic climate
control panel.
If you press button0 (
page 232)
to reactivate the automatic climate
control system, the defrosting mode is
activated.
Page 236 of 561

235 Controls in detail
3-zone automatic climate control*
Deactivating the rear automatic
climate control
You can switch on and off the rear auto-
matic climate control with the automatic
climate control panel in the front.
Deactivating
Press button> (
page 232).
The indicator lamp on the button
comes on.
In displaye (
page 232), you will see
the >symbol followed by
MODE
for
approximately 3 seconds.
Press button´ (
page 232).
In displaye (
page 232), you will see
the >symbol followed by
OFF
.
The rear automatic climate control is
switched off.Reactivating
Press button> (
page 232).
The indicator lamp on button>
comes on.
In displaye (
page 232), you will see
the >symbol followed by
ON and
MODE
. The
MODE
display is cleared and
the indicator lamp on button>
goes out after approximately
3 seconds.
The rear automatic climate control
switches on.
For more information on rear air condition-
ing, see “Rear automatic climate control”
(
page 244).Operating the climate control system
in automatic mode
You can switch the automatic climate con-
trol system on and off separately for each
zone as needed.
Activating
Press buttonU (
page 232) while
the engine is running.
AUTO appears in the display of control
panele (
page 232). Air volume and
air distribution are controlled separate-
ly for each zone.
iYou can switch on and off the rear au-
tomatic climate control by pressing the
respective button on the rear climate
control panel (
page 244).
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary.
Page 237 of 561

236 Controls in detail3-zone automatic climate control*
Use temperature controls1 and9
(page 232) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is ad-
justed automatically.
Deactivating
Press one button of the air distribution
(page 232) or press button
orQ (
page 232).
The
AUTO
display disappears in the
displaye (
page 232).
Depending on which button you press –
the air distribution button or the air vol-
ume button or Q – automatic
control of either the air distribution or
air volume is switched off.
Setting the temperature
Use temperature controls1 and9
(page 232) 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 automatic climate control will adjust
to the set temperature as fast as possible.
Increasing
Turn temperature control1 and/or
9 slightly clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Turn temperature control1 and/or
9 slightly counterclockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting air distribution
Use the air distribution buttons3,h,
orj for the driver’s side, or7,b, orc
(page 232) 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:
Symbol
Function
Driver’s
side
Passen-
ger side
6
Z
Directs air to the
windshield and
side air vents
7
a
Directs air through
the center, side
and rear passen-
ger compartment
air vents
8
Y
Directs air to the
footwells and side
air vents