Page 889 of 4133
85 Safety and Security
Anti-theft systems
Arming tow-away alarm and glass 
breakage sensor
When you lock your vehicle, the tow-away 
and glass breakage sensor alarm is auto-
matically armed.
Disarming tow-away alarm and glass 
breakage sensor
To prevent triggering the tow-away alarm 
feature, switch off the tow-away alarm and 
glass breakage sensor before towing the 
vehicle, or when parking on a surface sub-
ject to movement, such as a ferry or auto 
train.Vehicles with trip computer*
The buttons are located in the overhead 
control panel.
1Reset button
2Mode button
3Display
4Glass breakage sensor
Turn key in steering lock to position2 
(page 33).
Return key to position0 and remove it 
from the steering lock.
Within 30 seconds press button1 
or2.
The display shows 
OFF
.
Exit vehicle and lock vehicle with 
remote control (
page 32).
The tow-away alarm and glass breakage 
sensor remain switched off until the key is 
inserted in steering lock and turned to 
position1. 
     
        
        Page 890 of 4133
86 Safety and SecurityAnti-theft systemsVehicles without trip computer
The buttons are located in the overhead 
control panel.
1Switching off tow-away alarm and glass 
breakage sensor
Turn key in steering lock to position2 
(page 33).
Return key to position0 and remove it 
from the steering lock.
Within 30 seconds press button1 on 
the right or left side.
Exit vehicle and lock vehicle with 
remote control (
page 32).
The tow-away alarm and glass breakage 
sensor remain switched off until the key is 
inserted in steering lock and turned to 
position1.Canceling the alarm
To cancel the alarm:
Switch on the ignition by turning the 
key in the steering lock to position2.
or
Press theŒ or ‹button on the 
remote control.
The alarm is canceled. 
     
        
        Page 891 of 4133
87 Controls in detail
Locking and unlocking
Seats
Memory function*
Lighting
Instrument cluster
Automatic transmission
Transmission control – LOW RANGE mode
Good visibility
Automatic climate control
Power windows
Sliding / pop-up roof*
Driving systems
Loading
Useful features 
     
        
        Page 892 of 4133

88 Controls in detailLocking and unlocking
In the “Controls in detail” section you will 
find detailed information on how to ope- 
rate the equipment installed in your vehi-
cle. If you are already familiar with the ba-
sic 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
Remote control with folding key
Your vehicle comes supplied with two 
remote controls with folding key.
The remote control provides an extended 
operating range. To prevent theft, 
however, it is advisable to only unlock the 
vehicle when you are in close proximity to 
it.
The key centrally locks and unlocks:
the doors
the liftgate
the fuel filler flap1ÂPanic button (
page 75)
2ŒUnlock button
3‹Lock button
4Release button for key
5ŠUnlock button for liftgate
iIf the key is inserted in the steering 
lock, the vehicle cannot be locked or 
unlocked with the remote control.
!To prevent possible malfunction, avoid 
exposing the remote control to high 
levels of electromagnetic radiation. 
     
        
        Page 893 of 4133

89 Controls in detail
Locking and unlocking
Unlocking
Unlocking the driver’s door and fuel 
filler flap
Press buttonŒ once.
All turn signal lamps flash once to indi-
cate that the driver’s door and the fuel 
filler flap are unlocked.Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once to indi-
cate that all doors, fuel filler flap and 
liftgate are unlocked.
Unlocking the liftgate
Press buttonŠ.
Only the liftgate unlocks.
Locking
Press button‹ once.
All turn signal lamps flash three times 
to indicate that all doors, the liftgate 
and the fuel filler flap are locked.
iUnlocking the vehicle with the remote 
control deactivates the anti-theft 
alarm.
The vehicle will lock again automatical-
ly and reactivate the anti-theft system 
within approximately 40 seconds of un-
locking if neither door nor liftgate is 
opened.
iLocking the vehicle with the remote 
control activates the anti-theft alarm.
iIf the turn signal lamps do not flash 
three times, one of the following ele-
ments may not be properly closed:
a door
the liftgate
the hood
Close the respective element and lock 
the vehicle again.
Warning!
G
When leaving the vehicle, always remove the 
key from the steering lock, and lock your ve-
hicle. 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 seri-
ous personal injury. 
     
        
        Page 894 of 4133

90 Controls in detailLocking and unlocking
Loss of remote control with folding key
If you lose a remote control or the folding 
key, you should do the following:
Have the remote control deactivated 
by an authorized Mercedes-Benz Light 
Truck Center.
Report the loss of the remote control or 
the folding 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.
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are 
safe to do so.
1Locking knob
2Inside door handle
Pull on door handle2.
If a door was locked, locking knob1 
will move up.
!If you can no longer lock or unlock the 
vehicle with the remote control, then 
the batteries in the remote control are 
discharged, the remote control is mal-
functioning or the vehicle battery is 
drained.
Check the batteries in the remote 
control and replace them if neces-
sary (
page 262).
Use the folding key to unlock or 
lock the doors and the liftgate.
Check the vehicle battery 
(page 278).
Synchronize the remote control 
(page 263).
If the remote control is malfunctioning, 
contact an authorized Mercedes-Benz 
Light Truck Center. 
     
        
        Page 895 of 4133
91 Controls in detail
Locking and unlocking
Opening the liftgate
Opening the liftgate from outside
A minimum height clearance of 7 ft 
(2.15 m) is required to open the liftgate.
The handle is located above the rear 
license plate recess.
1Grip molding
2Handle
Pull on handle2.
Swing the liftgate upward by using the 
grip molding.Opening the liftgate from inside
A minimum height clearance of 7 ft 
(2.15 m) is required to open the liftgate.
The release lever is located on the inside of 
the liftgate.
1Handle
2Catch
iIf the vehicle has previously been 
locked from the outside with the re-
mote control, opening a door from the 
inside will trigger the alarm.
To cancel the alarm, do one of the 
following:
Switch on the ignition by turning the 
key in the steering lock to position2.
or
Press the‹ or Œbutton on the 
remote control.
The alarm is cancelled.
!Always make sure that there is suffi-
cient overhead clearance.iThe vehicle must be unlocked. 
     
        
        Page 896 of 4133

92 Controls in detailLocking and unlocking
To unlock the liftgate, move the 
catch2 to the right.
Pull handle1 down and swing liftgate 
upward.
Closing the liftgate
1Recessed grip
2Grip molding
Pull down on recessed grip1.
Close liftgate by using grip molding2.
!Always make sure that there is suffi-
cient overhead clearance.iTo lock the liftgate, move the catch2 
to the left.Warning!
G
When leaving the vehicle, always remove the 
key from the steering lock and lock the vehi-
cle. Do not leave children unattended in the 
vehicle. Children could open the liftgate 
from inside, which could result in an acci-
dent and / or serious personal injury.
Warning!
G
To prevent possible personal injury, always 
keep hands and fingers away from the liftga-
te opening when closing the liftgate. Be es-
pecially careful when small children are 
around.
Do not close the liftgate from the inside by 
pulling on the handle.Warning!
G
Only drive with the liftgate closed as exhaust 
fumes may enter the vehicle interior.iTo prevent an inadvertent lockout, do 
not place the key in the cargo compart-
ment.