Page 5 of 456

ContentsSafety and Security........................... 61
Occupant safety................................... 62
Air bags .......................................... 63
Seat belts ....................................... 68
Children in the vehicle .................... 72
Blocking of rear side windows
operation ........................................ 78
Panic alarm .......................................... 79
Activating ....................................... 79
Deactivating ................................... 79
Driving safety systems ......................... 80
ABS ................................................ 80
BAS ................................................ 81
ESP
®............................................... 82
Anti-theft systems................................ 85
Immobilizer..................................... 85
Anti-theft alarm system .................. 85
Tow-away alarm ............................. 87
Controls in detail............................... 89
Locking and unlocking ......................... 90
SmartKey ....................................... 90
SmartKey with KEYLESS-GO* ........ 94
Opening the doors from the
inside ........................................... 100
Opening the trunk ........................ 101
Closing the trunk.......................... 103
Trunk emergency release ............. 109
Power closing assist for doors
and trunk lid ................................. 110
Automatic central locking ............ 110
Locking and unlocking from
the inside ..................................... 111
Seats ................................................. 112
Easy-entry/exit feature ................ 112
Removing and installing front
seat head restraints ..................... 114
Rear seat head restraints ............. 115
Lumbar support............................ 117
Multicontour seats* ..................... 117
Seat heating ................................. 119
Seat ventilation* .......................... 121Memory function ............................... 122
Storing positions into memory ..... 123
Recalling positions from memory. 123
Storing exterior rear view
mirror parking position ................ 124
Lighting ............................................. 125
Exterior lamp switch .................... 125
Combination switch ..................... 129
Hazard warning flasher ................ 130
Interior lighting ............................ 131
Courtesy lighting .......................... 133
Door entry lamps ......................... 133
Trunk lighting ............................... 133
Instrument cluster ............................. 134
Instrument cluster illumination .... 134
Coolant temperature gauge ......... 135
Trip odometer .............................. 135
Tachometer.................................. 136
Outside temperature indicator ..... 136
Clock............................................ 136
Page 28 of 456
27 At a glance
Center console
Center console
Upper part
Item
Page
1
Button for rear window sun-
shade
182
2
Parktronic* deactivation
button
223
3
Active Body Control (ABC)
button
220
4
Level control button
221
5
Central locking switch
111
Anti-theft alarm system indi-
cator lamp
85
6
Hazard warning flasher
on/off switch
130
Item
Page
7
Central unlocking switch
111
8
Electronic Stability Program
(ESP
®) control switch
84
9
Rear head restraints, button
for folding down and placing
upright*
115
a
Tow-away alarm button
87
b
COMAND system, see sepa-
rate operating instructions
c
Automatic climate control
184
Page 33 of 456

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
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
Get in the vehicle and insert the
SmartKey in the starter switch.
For more information, see “Locking and
unlocking” (
page 90).
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.
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 34 of 456

33 Getting started
Unlocking
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.
Grasp an outside door handle.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
Get in the vehicle.
For more information, see “Locking and
unlocking” (
page 94).
iTo unlock the vehicle, the SmartKey
with KEYLESS-GO must be outside the
vehicle, no further than approx. 3 feet
(1 meter) away from the door. 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.
Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* 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.
iIf the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function.
Page 61 of 456

60 Getting startedParking and lockingLocking
Locking with the SmartKey
After exiting the vehicle, press the lock
button‹ on the SmartKey
(page 32).
With the trunk and all doors closed, all
turn signal lamps flash three times. The
locking knobs in the doors move down.
The anti-theft alarm system is armed.
For more information, see “Locking and
unlocking” (
page 90).Locking with KEYLESS-GO*
1Lock button
After exiting the vehicle, take the
SmartKey with KEYLESS-GO with you
and press lock button1 on an outside
door handle or on the trunk lid
(page 99).
With the trunk and all doors closed, all
turn signal lamps flash three times. The
locking knobs in the doors move down.
The anti-theft alarm system is armed.
For more information, see “Locking and
unlocking” (
page 94).
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.
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 62 of 456
61 Safety and Security
Occupant safety
Panic alarm
Driving safety systems
Anti-theft systems
Page 80 of 456

79 Safety and Security
Panic alarm
Panic alarm
An audible alarm and blinking exterior
lamps will operate for approximately
21/2minutes.
1Â button
Activating
Press and hold button1 for at least
1 second.
Deactivating
Press button1 again.
or
Insert the SmartKey or the SmartKey
with KEYLESS-GO* in starter switch.
or
Press the KEYLESS-GO* start/stop
button (
page 35).
The SmartKey with KEYLESS-GO* must
be inside the vehicle.
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.iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause interfer-
ence, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
Page 86 of 456

85 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
With the SmartKey
Remove the SmartKey from the starter
switch.
The immobilizer is activated.
With KEYLESS-GO*
Turn off the engine by means of the
KEYLESS-GO start/stop button
(page 35).
Open the driver’s door.
The immobilizer is activated.Deactivating
With the SmartKey
Insert the SmartKey in the starter
switch.
The immobilizer is deactivated.
With KEYLESS-GO*
Start the engine by means of the
KEYLESS-GO start/stop button
(page 35).
The immobilizer is deactivated.
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 using the
mechanical key
someone opens a door from the inside
someone opens the trunk with the
emergency release button
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).