Page 32 of 506
30 At a glanceDoor control panel
Item
Page
1
Door handle
109
2
Seat adjustment
38
3
Memory function (for stor-
ing seat, exterior mirror 
and steering wheel set-
tings)
130
4
Exterior rear view mirror 
adjustment
41
5
Switches for opening/ 
closing front and rear side 
windows, rear window 
override switch 
218
6
Remote trunk lid release 
switch, Trunk lid open-
ing/closing system*
111 
     
        
        Page 34 of 506

32 Getting startedThe “Getting started” section provides an 
overview of the vehicle’s most basic func-
tions.
If you are already familiar with the basic 
functions described here, the “Controls in 
detail” section will provide you with further 
information. The corresponding page refer-
ences are located at the end of each seg-
ment.Unlocking
Unlocking with the SmartKeySmartKey with remote control 1‹Lock button
2ŠUnlock button for trunk lid
3ŒUnlock button
4ÂPanic button (
page 84)
Press unlock button Œ on the 
SmartKey.
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.Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take it 
with you, and lock the vehicle. 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.iThe SBC brake system is activated 
(page 90). 
     
        
        Page 100 of 506

98 Controls in detailIn the “Controls in detail” section you will 
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. 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 giv-
en at the beginning of each segment.Locking and unlocking
For more information on locking and un-
locking, see “Getting started” (
page 32) 
and (
page 56).
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 different color to help 
distinguish each key 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 trunk
the fuel filler flap
SmartKey with remote control1‹ Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 84) 
     
        
        Page 104 of 506

102 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 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 Center 
will be glad to supply you with a replace-
ment. 
SmartKey with KEYLESS-GO*
Specially equipped vehicles come with two 
SmartKeys with KEYLESS-GO, each with 
remote control and a removable mechani-
cal key. The locking tabs for the mechani-
cal 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 every time you grasp a door 
handle.
If the SmartKey with KEYLESS-GO is valid, 
your vehicle unlocks
the doors
the trunk lid
the fuel filler flap
SmartKey with KEYLESS-GO 1‹ Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 84)
iIf the vehicle was previously centrally 
locked, the trunk will lock automatical-
ly after closing it. The turn signals flash 
three times to confirm locking.
iWhen any outside door handle other 
than the driver’s outside door handle is 
grasped, the vehicle is centrally un-
locked. 
     
        
        Page 112 of 506

110 Controls in detailLocking and unlockingOpening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.90 ft 
(1.80 m) is required to open the trunk lid.
The handle is located above the rear li-
cense plate recess.
In vehicles without KEYLESS-GO*: The ve-
hicle must be unlocked.
Pull on the handle.
The trunk lid opens.Opening the trunk from the inside
You can open the trunk from the inside if 
the vehicle is stationary. 
A minimum height clearance of 5.90 ft 
(1.80 m) is required to open the trunk lid.
The switch is located on the driver’s door.
1Remote trunk lid switch with indicator 
lamp
!The trunk lid swings open upwards au-
tomatically. Always make sure there is 
sufficient overhead clearance.iThe trunk can also be opened using the 
buttonŠ on the SmartKey or 
SmartKey with KEYLESS-GO* or from 
its inside in an emergency, see “Trunk 
lid emergency release” (
page 117).
iIf the vehicle was previously centrally 
locked, the trunk will lock automatical-
ly after closing it. The turn signals flash 
three times to confirm locking. 
     
        
        Page 113 of 506

111 Controls in detail
Locking and unlocking
1Remote trunk lid switch with indicator 
lamp (vehicles with trunk lid open-
ing/closing system*)
Pull remote trunk lid switch1 until the 
trunk begins to open. 
The trunk lid opens. The indicator lamp 
in the switch comes on and remains lit 
until the trunk is closed.Limiting opening height of trunk lid*
Vehicles with trunk lid opening/closing 
system*:
The trunk lid opening height can be limited 
when transporting goods on a roof rack 
(e.g. presence of an optional MB sport lug-
gage container). When activated, the trunk 
lid opens to approximately the height of 
the roof edge.
Activate the limiting opening height of 
trunk lid using the control system 
(page 166). 
!The trunk lid swings open upwards au-
tomatically. Always make sure there is 
sufficient overhead clearance.
Vehicles with trunk lid opening/closing 
system*: To stop the opening proce-
dure, press or pull remote trunk lid 
switch1.iThe trunk can also be opened using the 
buttonŠ on the SmartKey or 
SmartKey with KEYLESS-GO* or from 
its inside in an emergency, see “Trunk 
lid emergency release” (
page 117). 
     
        
        Page 114 of 506

112 Controls in detailLocking and unlockingClosing the trunk
Closing the trunk from the inside auto-
matically*
In vehicles with trunk lid opening/closing 
system* you can close the trunk from the 
inside using the remote trunk lid switch.
Press remote trunk lid switch 
(page 111) until the indicator lamp in 
the switch goes out and the trunk lid is 
closed.
To interrupt the closing procedure:
Release the remote trunk lid switch.If the trunk lid comes into contact with an 
object while closing (e.g. luggage that has 
been piled too high), the closing procedure 
is stopped and the trunk reopens slightly.iYou can also close the trunk by hand.
Warning!
G
Maintain sight of trunk area while operating 
the door mounted switch. Monitor the clos-
ing procedure carefully to make sure that no 
one is in danger of being injured. 
To interrupt the closing procedure, release 
the door mounted remote trunk lid switch.
Even with the SmartKey or SmartKey with 
KEYLESS-GO* removed from the starter 
switch or the SmartKey with KEYLESS-GO* 
removed from the vehicle, the remote trunk 
lid switch can be operated. Therefore, do 
not leave children unattended in the vehicle, 
or with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may 
cause an accident and/or serious personal 
injury. 
Warning!
G
Only drive with the trunk closed as, among 
other dangers such as visibility blockage, 
exhaust fumes may enter the vehicle 
interior. 
     
        
        Page 116 of 506

114 Controls in detailLocking and unlocking
Closing the trunk from the outside 
(vehicles without KEYLESS-GO*)
In vehicles with trunk lid opening/closing 
system* you can close the trunk separate-
ly from the outside using the trunk lid clos-
ing switch.
1Trunk lid closing switch
Press trunk lid closing switch1 brief-
ly.
The trunk lid closes.If the trunk lid comes into contact with an 
object while closing (e.g. luggage that has 
been piled too high), the closing procedure 
is stopped and the trunk lid reopens slight-
ly.
iDo not place the SmartKey in the open 
trunk. You may lock yourself out.
Vehicles with KEYLESS-GO*: 
To prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO is 
recognized inside the vehicle or in the 
trunk.iIf the vehicle was previously centrally 
locked, the trunk lid will lock automati-
cally after closing it (
page 112). The 
turn signals will flash three times to 
confirm locking.
iYou can also close the trunk 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 trunk opening when closing the trunk. 
Be especially careful when small children 
are around. To stop the closing procedure, 
do one of the following: 
press the trunk lid closing switch1 
press the Š button on the SmartKey
press the remote trunk lid switch (on the 
driver’s door)
Even with the SmartKey removed from the 
starter switch, the remote trunk lid switch 
can be operated. Therefore, do not leave 
children unattended in the vehicle, or