Page 34 of 474
32 At a glanceDoor control panel
Item
Page
1
Door handle
106
2
Switches for open-
ing/closing front and rear 
side windows
193
3
Memory function (for stor-
ing seat, mirror and steer-
ing wheel settings)
120
4
Seat heating switch
117
Seat ventilation* switch
119
5
Seat adjustment switch
39,
113
6
Remote trunk lid release 
switch
109
7
Door pocket
229 
     
        
        Page 36 of 474

34 Getting startedThe “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 refer-
ences are located at the end of each seg-
ment.Unlocking
Unlocking with the SmartKeySmartKey with remote control1‹Lock button
2ŠUnlock button for trunk lid
3ŒUnlock button
4ÂPanic button
Press unlock button  Œ on the 
SmartKey.
All turn signal lamps flash once. The 
locking knobs in the doors move up. 
The anti-theft alarm system is dis-
armed.
The SBC brake system is activated.
Enter the vehicle and insert the 
SmartKey in the starter switch.
For more information, see “SmartKey” 
(
page 94).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.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 96 of 474

94 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 the Getting started section 
(page 34).
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 Smart-
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 lid
the glove box
the storage compartment under the 
armrest
the storage compartment in the rear
the fuel filler flap  
     
        
        Page 97 of 474

95 Controls in detail
Locking and unlocking
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 78)
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. It is possible 
for children to open a locked door from the 
inside, which could result in an accident 
and/or serious injury.!To prevent possible malfunction, avoid 
exposing the SmartKey to high levels of 
electromagnetic radiation.
iUSA only: 
This device complies with Part 15 of 
the FCC Rules. Operation is subject to 
the following two conditions:
(1) This device may not cause harmful 
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired 
operation.
Any unauthorized modification to this 
device could void the user’s authority 
to operate the equipment. 
     
        
        Page 100 of 474

98 Controls in detailLocking and unlockingUnlocking the trunk
You can unlock the trunk separately.
A minimum height clearance of 
6.2 ft (1.88 m) is required to open the 
trunk lid.
Press and hold button Š on the 
SmartKey until trunk unlocks.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 Center.
Report the loss of the SmartKey or the 
mechanical key to your car insurance 
company immediately.
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*
Vehicles equipped with KEYLESS-GO come 
with two SmartKeys with KEYLESS-GO, 
each with remote controls and a remov-
able 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 every time you grasp a door 
handle. 
iIf the vehicle was previously centrally 
locked, the trunk lid will lock automati-
cally when closed. The turn signals will 
flash three times to confirm locking. 
     
        
        Page 110 of 474

108 Controls in detailLocking and unlockingThe trunk can also be opened using
the SmartKey, see “Locking and un-
locking” (
page 94)
the remote trunk lid release switch, see 
“Opening the trunk from the inside” 
(page 108)
the trunk lid emergency release button, 
see “Trunk lid emergency release” 
(page 109)Opening the trunk from the inside
You can open the trunk from the inside if 
the vehicle is stationary and the retract-
able hardtop is fully opened or closed.
The switch is located on the driver’s door.
1Remote trunk lid release switch
2Indicator lamp
Pull remote trunk lid release switch1.
The trunk lid unlocks. Indicator 
lamp2 comes on and remains lit until 
the trunk is closed again.
Lift the trunk lid.The trunk can also be opened using
the SmartKey, see “Locking and un-
locking” (
page 94)
the remote trunk lid release switch, see 
“Opening the trunk from the inside” 
(page 108)
the trunk lid emergency release button, 
see “Trunk lid emergency release” 
(page 109)
iTo facilitate trunk loading and unload-
ing when the hardtop is retracted, you 
can raise the hardtop from its storage 
position in the trunk using the loading 
aid feature (
page 235). You may also 
unhook the luggage cover.
Remember to resecure the luggage 
cover after loading/unloading the 
trunk. Otherwise you will not be able to 
lower the retractable hardtop. 
     
        
        Page 114 of 474
112 Controls in detailLocking and unlocking
iIf the vehicle was previously centrally 
locked using the SmartKey or the 
SmartKey with KEYLESS-GO*, it will 
not unlock using the central locking 
switch.
If the vehicle was previously locked 
with the central locking switch
while in the global remote control 
mode, the complete vehicle is un-
locked when a door is opened from 
the inside
while in the selective remote con-
trol mode, only the door opened 
from the inside is unlocked 
     
        
        Page 240 of 474

238 Controls in detailUseful featuresShortly after the completion of your Tele 
Aid acquaintance call, you will receive a 
user ID and password. By visiting 
www.mbusa.com and selecting “Tele Aid” 
(USA only), you will have access to account 
information, remote door unlock, and 
more.System self-check
Initially, after switching on the ignition, 
malfunctions are detected and indicated 
(the indicator lamps in the SOS button, the 
Roadside Assistance button• and the 
Information button¡ stay on longer 
than ten seconds or do not come on). The 
message 
TeleAid malfunction – Visit workshop appears for approximately ten seconds in 
the multifunction display.
iThe SOS button is located above the in-
terior rear view mirror.
The Roadside Assistance button• 
and the Information button¡ are 
located below the center armrest cov-
er.!The Tele Aid system utilizes the cellular 
network for communication and the 
GPS (Global Positioning System) satel-
lites for vehicle location. If either of 
these signals are unavailable, the Tele 
Aid system may not function and if this 
occurs, assistance must be summoned 
by other means.
Warning!
G
If the indicator lamps in the SOS button, in 
the Roadside Assistance button, and/or in 
the Information button do not come on dur-
ing the system self-check, or if any of these 
indicators remain illuminated continuously 
in red and/or the message 
TeleAid 
malfunction – Visit workshop
 is dis-
played in the multifunction display after the 
system self-check, a malfunction in the sys-
tem has been detected.
If a malfunction is indicated as outlined 
above, the system may not operate as ex-
pected. Have the system checked at the 
nearest Mercedes-Benz Center as soon as 
possible