Page 24 of 561
23 At a glance
Cockpit
Item
Page
1
Cruise control lever
265
2
Instrument cluster
24
3
Multifunction steering
wheel
28
4
Horn
5
Steering wheel gearshift
buttons
206
6
Gear selector lever for
automatic transmission
53
7
Front Parktronic* warning
indicators
276
8
Overhead control panel
31
9
Glove box release
Glove box lock
294
295
Item
Page
a
Glove box
294
b
Electrical outlet
307
c
Center console
29
d
Starter switch
38
e
Steering wheel adjustment,
manual
45
f
Steering wheel adjustment,
electrical*
46
g
Hood lock release
345
h
Parking brake pedal
65
j
Remote tailgate switch
123
Item
Page
k
Parking brake release
56
l
Headlamp washer switch*
208
m
Exterior lamp switch
147
n
Door control panel
34
o
Combination switch
Turn signals
58
Windshield wipers
59
High beam
58
Rear window wiper
61
Page 29 of 561
28 At a glanceMultifunction steering wheel
Item
Page
1
Multifunction display
161
Operating the control
system
162
2
Telephone*
Press buttonsto take a calltto end a call
3
Selecting the submenu or
setting the volume:
Press buttonæup / to increaseçdown / to decrease
Item
Page
4
Moving within a menu:
Press buttonjfor next displaykfor previous display
5
Menu systems:
Press buttonèfor next menuÿfor previous menu
Page 35 of 561
34 At a glanceDoor control panel
Item
Page
1
Door handle
121
2
Central locking/unlocking
switch
131
3
Exterior rear view mirror ad-
justment
48
4
Selection buttons for exteri-
or rear view mirror adjust-
ment
Power-folding exterior rear
view mirrors*
48
211
5
Switches for opening/clos-
ing front and rear door win-
dows
248
6
Rear side window override
switch
94
7
Hinged quarter window
switch*
250
8
Remote tailgate release
switch, Tailgate opening
system*
123,
124
Page 38 of 561

37 Getting started
Unlocking
Unlocking with Keyless-Go*
With the KEYLESS-GO function, you can
lock or unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without in-
serting the SmartKey into the starter
switch.SmartKey with KEYLESS-GO*1‹Lock button
2ŠUnlock button* for tailgate
3ŒUnlock button
4ÂPanic button (
page 95)
Grasp an outside door handle or the
tailgate handle.
All turn signal lamps flash once. The ve-
hicle unlocks. The locking knobs in the
doors move up. The anti-theft alarm
system is disarmed. The locator light-
ing comes on if the feature is enabled
in the control system (
page 183).
Enter the vehicle.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 114).
iTo unlock the vehicle, the SmartKey
with KEYLESS-GO must be outside the
vehicle, no further than approximately
3 feet (1 meter) away from the respec-
tive door.Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and / or serious personal injury.
i If the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function.
Page 49 of 561

48 Getting startedAdjustingInterior rear view mirror
Manually adjust the interior rear view
mirror.
For more information, see “Rear view mir-
rors” (
page 208).
Exterior rear view mirrorsThe buttons are located on the driver’s
door.
1Driver’s side exterior rear view mirror
button
2Adjustment button
3Passenger-side exterior rear view mir-
ror button
Switch on the ignition (
page 38).
Press button1 for the driver’s side ex-
terior rear view mirror or button3for
the passenger-side exterior rear view
mirror.
The indicator lamp on the respective
button comes on for approximately
15 seconds.
Push adjustment button2up, down,
left, or right according to the desired
setting.
Warning!
G
Exercise care when using the
passenger-side exterior rear view mirror.
The mirror surface is convex (outwardly
curved surface for a wider field of view). Ob-
jects in mirror are closer than they appear.
Check your interior rear view mirror or
glance over your shoulder before changing
lanes.
iIf you do not make adjustments to the
selected exterior rear view mirror with-
in 15 seconds, the indicator lamp goes
out. You will then have to select the de-
sired exterior rear view mirror again be-
fore any adjustments can be made.
Adjustments can only be made with the
indicator lamp for the respective exteri-
or rear view mirror button illuminated.
Page 113 of 561

112 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is
disarmed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
within approximately 40 seconds of un-
locking if
neither door nor tailgate is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activatedGlobal locking
Press button‹.
With the tailgate and all doors closed,
the turn signal lamps flash three times.
The locking knobs on the doors move
down. The anti-theft alarm system is
armed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds
until battery check lamp5
(page 110) flashes twice.
The SmartKey will then function as fol-
lows:Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
All turn signal lamps flash once. The
locking knob in the driver’s door moves
up. The anti-theft alarm system is
disarmed.
Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is
disarmed.
Page 114 of 561

113 Controls in detail
Locking and unlocking
Global locking
Press button‹.
With the tailgate and all doors closed,
the turn signal lamps flash three times.
The locking knobs on the doors move
down. The anti-theft alarm system is
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about 6 seconds
until battery check lamp5
(page 110) flashes twice.Checking the batteries
Press button‹orŒ.
Battery check lamp5 (
page 110)
comes on briefly to indicate that the
SmartKey batteries are in order.
!If you cannot lock or unlock the vehicle
with the SmartKey, then either the bat-
teries in the SmartKey are discharged,
the SmartKey is malfunctioning, or the
vehicle battery is drained.
Check the batteries in the
SmartKey and replace them if
necessary (
page 463).
Use the mechanical key to unlock
the driver’s door (
page 459).
Lock the vehicle as described in the
“Practical hints” section
(page 460).
Have the vehicle battery and the
vehicle battery connections
checked (
page 487).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz
Light Truck Center.
iIf battery check lamp5 does not
come on briefly during check, the
SmartKey batteries are discharged.
Replace the batteries (
page 463).
You can obtain the required batteries
at any authorized Mercedes-Benz Light
Truck Center.
iIf the batteries are checked within
signal range of the vehicle, pressing the
button‹orŒ will lock or un-
lock the vehicle accordingly.
Page 115 of 561

114 Controls in detailLocking and unlockingUnlocking and opening the tailgate
You can unlock and open the tailgate sep-
arately.
A minimum height clearance of 7.2 ft
(2.20 m) is required to open the tailgate.
Press and hold buttonŠ on the
SmartKey until the tailgate unlocks and
begins to open.Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Light Truck
Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Light
Truck Center will be glad to supply you
with a replacement.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys with
KEYLESS-GO are a different color to help
distinguish each SmartKey with
KEYLESS-GO unit.
The function of the SmartKey overrules the
KEYLESS-GO function.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked when you grasp an outside door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the tailgate
the fuel filler flap
!The tailgate swings open upwards auto-
matically. Always make sure there is
sufficient overhead clearance.
Vehicles with tailgate opening/closing
system*:
To stop the opening procedure, press
buttonŠ on the SmartKey. The tail-
gate stops moving.
iIf the vehicle was previously centrally
locked with the SmartKey, the tailgate
will lock automatically when closed.
The turn signals will flash three times to
confirm locking.