Page 31 of 539
30 At a glanceDoor control panel
Item
Page
1
Door handle
2
Central unlocking switch
Central locking switch
126
126
3
Exterior rear view mirror ad-
justment
Power folding exterior mir-
rors, switch for manual acti-
vation
44
197
4
Switches for opening/clos-
ing front and rear side win-
dows, rear window override 
switch
230
5
Remote tailgate release 
switch, Tailgate 
opening/closing system*
118 
         
        
        
     
        
        Page 34 of 539

33 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 in the starter switch.SmartKey with KEYLESS-GO*1‹Lock button
2ŠUnlock button* for tailgate
3ŒUnlock button
4ÂPanic button (
page 91)
Grasp an outside door 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.
Get in the vehicle.
For more information, see “SmartKey with 
KEYLESS-GO*” (
page 110).
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 107 of 539

106 Controls in detailIn the “Controls in detail” section you will 
find detailed information on how to oper-
ate the equipment installed in your vehicle. 
If you are already familiar with the basic 
functions of your vehicle, this section will 
be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the 
“Getting started” section of this manual. 
The corresponding page numbers are 
given at the beginning of each segment.Locking and unlocking
For more information on locking and un-
locking, see “Getting started” (
page 31) 
and (
page 62).
SmartKey
Your vehicle comes supplied with two 
SmartKeys, each with remote control and 
a removable mechanical key.
The locking tabs for the mechanical key 
portion of the two SmartKeys are a differ-
ent color to help distinguish each 
SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is 
advisable to only unlock the vehicle when 
you are in close proximity to it.
The SmartKey centrally locks and unlocks:
the doors
the tailgate
the fuel filler flap
SmartKey with remote control1‹Lock button
2ŠUnlock button* for tailgate
3Locking tab for mechanical key
4ŒUnlock button
5Battery check lamp
6ÂPanic button (
page 91) 
         
        
        
     
        
        Page 111 of 539

110 Controls in detailLocking and unlockingLoss 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 KEYLESS-GO function is integrated 
into the SmartKey. On these vehicles, the 
validity of the SmartKey with KEYLESS-GO 
is checked when you grasp a door handle 
for locking or unlocking.
If the SmartKey with KEYLESS-GO is valid, 
your vehicle unlocks:
the doors
the tailgate
the fuel filler flap
SmartKey with KEYLESS-GO*1‹ Lock button
2Š Unlock button* for tailgate
3Mechanical key
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 91) 
         
        
        
     
        
        Page 119 of 539

118 Controls in detailLocking and unlockingOpening the tailgate
Opening the tailgate from the outside
A minimum height clearance of 7 ft 
(2.15 m) is required to open the tailgate.
The handle is located above the rear 
license plate recess.
Vehicles without KEYLESS-GO*:
The vehicle must be unlocked.
Pull on the handle.
The tailgate opens.The tailgate can also be opened using the 
SmartKey (
page 106).Opening the tailgate from the inside 
electrically*
You can open the tailgate from the inside if 
the vehicle is stationary.
A minimum height clearance of 7 ft 
(2.15 m) is required to open the tailgate.
The switch is located on the door control 
panel.
1Remote tailgate switch with indicator 
lamp
!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 proce-
dure, press buttonŠ on the 
SmartKey. The tailgate stops moving.iIf the vehicle was previously centrally 
locked, the tailgate will lock automati-
cally after closing it (
page 120). The 
turn signals will flash three times to 
confirm locking. 
         
        
        
     
        
        Page 120 of 539

119 Controls in detail
Locking and unlocking
Pull remote tailgate switch1 until 
tailgate begins to open.
The tailgate opens. The indicator lamp 
in the remote tailgate switch comes on 
and remains lit until the tailgate is 
closed. While the tailgate is opening an 
acoustic signal sounds.Limiting opening height of tailgate*
Vehicles with tailgate opening/closing 
system*:
The tailgate opening height can be limited 
when transporting goods on a roof rack 
(e.g. presence of an MB sport luggage con-
tainer*). When activated, the tailgate 
opens to approximately 6.4 ft (1.95 m).
Activate the limiting opening height of 
tailgate using the control system 
(page 173).
Warning!
G
Maintain sight of the area around the rear of 
the vehicle while operating the tailgate with 
the door-mounted remote tailgate switch or 
with the Šbutton on the SmartKey or 
SmartKey with KEYLESS-GO*. Monitor the 
opening procedure carefully to make sure 
no one is in danger of being injured.
To interrupt the opening procedure, press or 
pull the door-mounted remote tailgate 
switch or press the Šbutton on the 
SmartKey or SmartKey with KEYLESS-GO*.
!The tailgate swings open upwards auto-
matically. Always make sure there is 
sufficient overhead clearance. To stop 
the opening procedure, press or pull re-
mote tailgate switch1 or press the 
Šbutton on the SmartKey or 
SmartKey with KEYLESS-GO*. The 
tailgate stops moving.iVehicles with tailgate opening/closing 
system*:
The tailgate can also be opened using 
the buttonŠ on the SmartKey or 
SmartKey with KEYLESS-GO*. 
         
        
        
     
        
        Page 121 of 539

120 Controls in detailLocking and unlockingClosing the tailgate
Closing the tailgate from the inside 
electrically*
In vehicles with tailgate opening/closing 
system* you can close the tailgate from 
the inside using the remote tailgate switch.
Press remote tailgate switch1 
(page 118) until tailgate begins to 
close.
The tailgate closes. The indicator lamp 
in the remote tailgate switch goes out. 
While the tailgate is closing an acoustic 
signal sounds.
To interrupt the closing procedure:
Press or pull remote tailgate switch1. 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.iYou can also close the tailgate by hand.
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.
Even with the SmartKey or the SmartKey 
with KEYLESS-GO* removed from the start-
er switch or the SmartKey with 
KEYLESS-GO* removed from the vehicle, 
the remote tailgate switch can be operated. 
Therefore, do not leave children unattended 
in the vehicle, or with access to an unlocked 
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious 
personal injury.
Warning!
G
Only drive with the tailgate closed as, 
among other dangers such as blocked 
visibility, exhaust fumes may enter the 
vehicle interior. 
         
        
        
     
        
        Page 123 of 539

122 Controls in detailLocking and unlocking1Tailgate closing switch
Press tailgate closing switch1 briefly.
The tailgate closes.
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.iYou can also close the tailgate by hand.
Warning!
G
Monitor the closing procedure carefully to 
make sure no one is in danger of being in-
jured. To prevent possible personal injury, 
always keep hands and fingers away from 
the cargo compartment opening when clos-
ing the tailgate. Be especially careful when 
small children are around. To stop the clos-
ing procedure, do one of the following: 
press the tailgate closing switch1
press the Šbutton on the SmartKey
press or pull the remote tailgate switch 
(on the driver’s door)
Even with the SmartKey removed from the 
starter switch, the tailgate closing switch 
can be operated. Therefore, do not leave 
children unattended in the vehicle, or with 
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause 
an accident and/or serious personal injury.
Warning!
G
Only drive with the tailgate closed as, 
among other dangers such as blocked 
visibility, exhaust fumes may enter the vehi-
cle interior.iDo not place the SmartKey in the open 
cargo compartment. You may lock 
yourself out.iIf the vehicle was previously centrally 
locked, the tailgate will lock automati-
cally after closing it. The turn signals 
will flash three times to confirm lock-
ing.