Page 33 of 481
32 At a glance
Door control panel
ItemPage
1Inside door handle108
2Seat adjustment40,
120
3Memory function (for stor-
ing seat, exterior mirror and 
steering wheel settings)126
4Switches for opening/clos-
ing front door windows245
5Rear window override 
switch86
6Switches for opening/clos-
ing rear windows245
7Remote trunk opening 
switch110
Remote trunk 
opening/closing* switch110 
     
        
        Page 35 of 481
34 Getting started
The “Getting started” section provides an 
overview of the vehicle’s most basic func-
tions. First-time Mercedes-Benz owners 
should pay special attention to the infor-
mation given here.
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 
references are located at the end of each 
segment.
Unlocking
Unlocking with the SmartKey
SmartKey with remote control 
1‹Lock button
2ŠOpening button for trunk
3ŒUnlock button
4ÂPanic button (
page 87)
Press unlock button Œ on the 
SmartKey.
All turn signal lamps flash once.
An acoustic signal sounds once.
For more information, see “Factory 
setting” (
page 104).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
Enter the vehicle and insert the 
SmartKey in the starter switch. 
     
        
        Page 36 of 481

35 Getting started
Unlocking
For more information, see “SmartKey” 
(
page 98).
Unlocking with KEYLESS-GO*
With the KEYLESS-GO function, you can 
lock and 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.Pull an outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once.
For more information, see “Factory 
setting” (
page 104).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
Enter the vehicle.
For more information, see “SmartKey with 
KEYLESS-GO*” (
page 101).
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. A child’s 
unsupervised access to a vehicle could 
result in an accident and/or serious 
personal injury.
iOpening a door causes the windows on that 
side of the car to open slightly. They will return to 
the up position when the door is closed.
iTo unlock the vehicle, the SmartKey with 
KEYLESS-GO must be outside the vehicle, no fur-
ther than approx. 3 feet (1 meter) away from the 
door to be opened.
Warning!G
When leaving the vehicle, always remove the 
SmartKey with KEYLESS-GO from the start-
er switch, take it with you, and lock the vehi-
cle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehi-
cle. A child’s unsupervised access to a 
vehicle could result in an accident and/or 
serious personal injury.
iOpening a door causes the windows on that 
side of the car to open slightly. They will return to 
the up position when the door is closed. 
     
        
        Page 99 of 481

98 Controls in detail
In 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 
basic 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 
unlocking, see “Getting started” 
(
page 34) and (page 59).
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 
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 trunk
the fuel filler flap
SmartKey with remote control
1‹Lock button
2Š Opening button for trunk 
(
page 101)
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 87)
!To prevent possible malfunction, avoid ex-
posing the SmartKey to high levels of electro-
magnetic radiation. 
     
        
        Page 102 of 481

101 Controls in detail
Locking and unlocking
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
Global locking
Press button‹.
With the trunk and both doors closed:
All turn signal lamps flash three 
times.
An acoustic signal sounds three 
times.
The locking knobs in the doors 
move down.
The anti-theft alarm system is 
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹ 
simultaneously for about 5 seconds un-
til battery check lamp5 (
page 98) 
flashes twice.Unlocking and opening the trunk
You can unlock and open the trunk 
separately.
A minimum height clearance of 5.71 ft 
(1.74 m) is required to open the trunk lid.
Press and hold button Š until trunk 
unlocks and begins to open.
The trunk can also be opened from its 
inside in an emergency, see “Trunk emer-
gency release” (
page 116).
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 every time you pull an outside 
door handle.
If the SmartKey with KEYLESS-GO is valid, 
your vehicle unlocks
the doors
the trunk
the fuel filler flap
!The trunk lid swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance.
Vehicles with trunk opening/closing system*: To 
stop the opening procedure, press button Š. 
The trunk lid stops moving.
iIf the trunk does not open, it is still locked 
separately (
page 117). 
     
        
        Page 111 of 481
110 Controls in detail
Locking and unlocking
Opening the trunk from the inside
Vehicles without trunk opening/closing 
system*
1Remote trunk opening switch
Vehicles with trunk opening/closing 
system*
1Remote trunk opening switch*
2Remote trunk closing switch*
Press remote trunk opening switch1 
until the trunk begins to open.
The trunk opens. The indicator lamp 
comes on and remains lit until the 
trunk is closed.
iIf the trunk does not open, it is still locked 
separately (
page 117).
!Vehicles with trunk opening/closing sys-
tem*: To stop the opening procedure, press 
switch1 or 2.
iThe trunk can also be opened using 
buttonŠ on the SmartKey or SmartKey with 
KEYLESS-GO* or from its inside in an emergen-
cy, see “Trunk emergency release” 
(
page 116). 
     
        
        Page 112 of 481

111 Controls in detail
Locking and unlocking
Closing the trunk
Closing the trunk from the inside 
automatically*
In vehicles with trunk opening/closing sys-
tem* you can close the trunk from the in-
side using the remote trunk closing* 
switch.
Press the remote trunk closing* 
switch2 (
page 110) until the indi-
cator lamp in the switch goes out and 
the trunk lid is closed.
To interrupt the closing procedure:
Release remote trunk closing* 
switch2.If the trunk lid comes into contact with an 
object while closing (e.g. luggage that has 
been piled too high), in the sequence, the 
upper motion the closing procedure is 
stopped and the trunk reopens slightly.
iYou can also close the trunk by hand 
(
page 112).
Warning!G
Maintain sight of trunk area while operating 
the door mounted remote trunk closing* 
switch. Monitor the closing procedure care-
fully to ensure that no one is in danger of be-
ing injured. 
To interrupt the closing procedure, release 
the door mounted remote trunk closing 
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 trunk opening/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 trunk closed as, among 
other dangers such as blocked visibility, 
exhaust fumes may enter the vehicle 
interior. 
     
        
        Page 114 of 481

113 Controls in detail
Locking and unlocking
Closing the trunk from the outside 
(vehicles without KEYLESS-GO*)
In vehicle with trunk opening/closing sys-
tem* you can close the trunk separately.
1Trunk closing switch
Press trunk closing switch1 briefly.
The trunk 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 reopens slightly.
iYou can also close the trunk by hand 
(
page 112).
Warning!G
Monitor the closing procedure carefully to 
ensure that 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 trunk closing switch1
press the Š button on the SmartKey
press the remote trunk opening or clos-
ing switch (on driver’s door)
Even with the SmartKey removed from the 
starter switch, the trunk closing switch can 
be operated. Therefore, do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle.Unsupervised 
use of vehicle equipment may cause an ac-
cident and/or serious personal injury.
Warning!G
Only drive with the trunk closed as, among 
other dangers such as blocked visibility, 
exhaust fumes may enter the vehicle 
interior.
iDo not place the SmartKey in the open 
trunk. You may lock yourself out.
iIf the vehicle was previously centrally 
locked, the trunk will lock automatically after 
closing it (
page 111). All turn signal lamps 
flash three times, and an acoustic signal sounds 
three times, to confirm locking.