Page 6 of 474

ContentsDriving safety systems .........................  80
ABS ................................................  80
BAS ................................................  81
ESP .................................................  82
Four wheel electronic traction 
system (4MATIC) with the ESP .......  85
Anti-theft systems................................  86
Immobilizer.....................................  86
Anti-theft alarm system ..................  87
Tow-away alarm .............................  89Controls in detail...............................  91
Locking and unlocking .........................  92
SmartKey .......................................  92
SmartKey with KEYLESS-GO*.........  96
Opening the doors from 
the inside .....................................  102
Opening the trunk ........................  103
Closing the trunk ..........................  105
Trunk lid emergency release ........  111
Power closing assist 
for doors and trunk lid ..................  112
Automatic central locking ............  112
Locking and unlocking 
from the inside .............................  113Seats .................................................  114
Easy-entry/exit feature ................  114
Removing and installing 
front seat head restraints.............  116
Rear seats ....................................  117
Rear seat head restraints .............  120
Lumbar support............................  122
Multicontour backrest* ................  122
Drive-dynamic seat* ....................  124
Seat heating* ...............................  125
Seat ventilation* ..........................  127
Memory function ...............................  128
Storing positions into memory .....  129
Recalling positions from memory .  129
Storing exterior rear view 
mirror parking position.................  130
Lighting..............................................  131
Exterior lamp switch.....................  131
Combination switch .....................  135
Hazard warning flasher ................  136
Interior lighting.............................  137
Courtesy lighting ..........................  139
Door entry lamps .........................  139
Trunk lighting ...............................  139Instrument cluster .............................  140
Instrument cluster illumination ....  140
Coolant temperature gauge .........  141
Trip odometer ..............................  141
Tachometer ..................................  142
Outside temperature indicator .....  142
Clock............................................  142
Control system ..................................  143
Multifunction display....................  143
Multifunction steering wheel........  144
Menus ..........................................  146
Standard display menu ................  148
AUDIO menu ................................  148
CD changer* operating mode ......  151
TEL menu* ...................................  153
NAVI menu ...................................  155
Distronic* menu ..........................  156
Trip computer menu.....................  157
Vehicle status message 
memory menu ..............................  159
Settings menu ..............................  160 
     
        
        Page 32 of 474
30 At a glanceDoor control panel
Item
Page
1
Door handle
102
2
Memory function (for stor-
ing seat, exterior mirror, 
and steering wheel set-
tings)
128
3
Seat heating*
Seat ventilation*
125
127
4
Seat adjustment
38
Item
Page
5
Exterior mirror adjustment
41,
186
6
Switches for opening/clos-
ing front door windows
207
7
Override switch for rear 
passenger compartment 
78
8
Switches for opening/clos-
ing rear windows
207
9
Remote trunk lid switch
104 
     
        
        Page 34 of 474

32 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 control 1‹Lock button
2ŠOpening button for trunk
3ŒUnlock button
4ÂPanic button (
page 79)
Press unlock buttonŒ 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.
Get in the vehicle and insert the 
SmartKey in the starter switch.
For more information, see “SmartKey” 
(
page 92).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. 
     
        
        Page 60 of 474

58 Getting startedParking and lockingLocking Locking with the SmartKey
After exiting the vehicle press the lock 
button‹ on the SmartKey 
(page 32).
All turn signal lamps flash three times. 
The locking knobs on the doors move 
down.
For more information, see “SmartKey” 
(
page 92).Locking with KEYLESS-GO*
1Lock button on the outside door handle
After exiting the vehicle, press lock 
button1 on the outside door handle 
or on the trunk lid (
page 101).
The turn signal indicators come on 
briefly. The vehicle locks. The locking 
knobs in the doors move down. The an-
ti-theft alarm system is armed. 
For more information, see “SmartKey with 
KEYLESS-GO*” (
page 96).
Warning!
G
To prevent possible personal injury, always 
keep hands and fingers away from the door 
openings when closing the doors. Be espe-
cially careful when small children are 
around.
Before closing doors, make sure there is no 
possibility of someone getting caught in a 
door during closing.Warning!
G
When leaving the vehicle, always remove the 
SmartKey or SmartKey with KEYLESS-GO* 
from the starter switch, take it 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. 
     
        
        Page 89 of 474

87 Safety and Security
Anti-theft systems
Anti-theft alarm system
Once the alarm system has been armed, a 
visual and audible alarm is triggered when 
someone opens:
a door
the trunk
the hood
The alarm will stay on even if the activating 
element (a door, for example) is immedi-
ately closed.The alarm system will also be triggered 
when
someone attempts to raise the vehicle
the vehicle is opened with the 
mechanical key
someone opens a door from the inside 
if the vehicle was locked from the out-
side with the SmartKey
someone opens the trunk lid with the 
emergency release buttonArming the alarm system
The indicator lamp located in the central 
locking switch in on the upper part of the 
front center console.
1Indicator lamp
Lock your vehicle.
The turn signal lamps flash three times 
to indicate that the alarm system is ac-
tivated. The indicator lamp1 flashes 
to indicate that the alarm system is 
armed.
iIf the alarm stays on for more than 
30 seconds, a call to the Response 
Center is initiated automatically by the 
by the Tele Aid system (
page 255) 
provided Tele Aid service was sub-
scribed to and properly activated, and 
that necessary cellular service and GPS 
coverage are available. 
     
        
        Page 90 of 474
88 Safety and SecurityAnti-theft systemsDisarming the alarm system
Unlock your vehicle.
The turn signal lamps flash once to in-
dicate that the alarm system is deacti-
vated.Canceling the alarm
To cancel the alarm:
With the SmartKey
Insert the SmartKey in the starter 
switch.
or
Press the Œ or ‹ button on the 
SmartKey.
The alarm is canceled.With KEYLESS-GO*
Grasp the outside door handle.
The SmartKey with KEYLESS-GO must 
be within 3 ft. (1 m) of the vehicle.
or
Press the KEYLESS-GO* start/stop 
button (
page 35).
The SmartKey with KEYLESS-GO must 
be inside the vehicle.
The alarm is canceled.
iIf the turn signal lamps does not flash 
three times one of the following ele-
ments may not be properly closed:
a door
the trunk 
the hood
Close the respective element and lock 
the vehicle again.
iThe alarm system will rearm automati-
cally again after approximately 40 sec-
onds if no door was opened. 
     
        
        Page 92 of 474
90 Safety and SecurityAnti-theft systemsThe button is located on the upper part of 
the front center console.
1Indicator lamp
2Tow-away alarm off button
Switch off the ignition and remove the 
SmartKey from the starter switch.
Press button2.
The indicator lamp1 in the button 
comes on briefly.
Exit the vehicle and lock it with the 
SmartKey or (vehicles with 
KEYLESS-GO*) the lock button at each 
outside door handle or trunk lid.
iYou cannot disarm the tow-away alarm 
if the ignition is switched on.
iWhen you unlock your vehicle, the 
tow-away protection disarms automati-
cally.
The tow-away alarm remains disarmed 
until you lock your vehicle again. 
     
        
        Page 94 of 474

92 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 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 58).
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 trunk
the fuel filler flap
SmartKey with remote control1‹ Lock button
2Š Opening button for trunk
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 79)