Page 3 of 416

Contents
Introduction.......................................... 9
Product information ................................ 9
Operator’s Manual ...............................  10
Service and warranty information ..  10
Important notice for California
retail buyers and lessees of 
Mercedes-Benz automobiles ..........  11
Maintenance ..................................  12
Roadside Assistance ......................  12
Change of address or ownership....  12
Operating your vehicle outside the  
USA or Canada...............................  13
Where to find it ....................................  14
Symbols ...............................................  15
Operating safety ..................................  16
Proper use of the vehicle ...............  16
Problems with your vehicle ..................  17
Reporting safety defects......................  18
Reporting safety defects ................  18At a glance.........................................  19
Cockpit ................................................  20
Instrument cluster ...............................  22
Multifunction steering wheel ...............  24Center console ..................................... 25
Upper part ...................................... 25
Lower part ...................................... 26
Overhead control panel ........................ 27
Door control panel................................ 28
Getting started................................... 29
Unlocking ............................................. 30
Unlocking with the SmartKey.......... 30
Unlocking with KEYLESS-GO* ......... 32
Adjusting .............................................. 34
Seats............................................... 34
Steering wheel ................................ 37
Mirrors ............................................ 38
Driving .................................................. 40
Fastening the seat belts.................. 40
Starting the engine ......................... 42
Switching on headlamps ................. 46
Turn signals and high beam ............ 46
Windshield wipers ........................... 47
Problems while driving .................... 48
Parking and locking .............................. 50
Parking brake.................................. 50
Switching off headlamps................. 51
Turning off engine ........................... 52
Safety and Security...........................  55
Occupant safety ...................................  56
Airbags ...........................................  57
Seat belts .......................................  62
Preventive occupant safety
(PRE-SAFE) .....................................  66
Children in the vehicle ....................  67
Override switch for rear passenger 
compartment ..................................  74
Panic alarm ..........................................  75
Activating........................................  75
Deactivating....................................  75
Driving safety systems .........................  76
ABS .................................................  76
BAS .................................................  78
ESP .................................................  78
Four wheel electronic traction system 
(4MATIC) with the ESP ....................  81
Anti-theft systems ................................  82
Immobilizer .....................................  82
Anti-theft alarm system ..................  82
Tow-away alarm ..............................  84 
     
        
        Page 25 of 416
25 At a glance
Center console
Center console
Upper part
Item
Page
1
Switch for rear window 
sunshade
173
2
Parking assist (Parktronic* 
system) deactivation 
switch
221
3
Airmatic or ABC* switch
213
4
Level control switch
216
5
Central locking switch
Anti-theft alarm system in-
dicator lamp
103
83
6
Hazard warning flasher 
on/off switch
124
Item
Page
7
Central unlocking switch
103
8
ESP (Electronic Stability 
Program) control switch
80
9
Rear seat head restraints, 
switch for folding down
106
10
Tow-away alarm switch
84
11
COMAND system (see sep-
arate operating instruc-
tions)
12
Automatic climate control
187
13
Ashtray
Lighter
232
233 
     
        
        Page 55 of 416
55 Safety and Security
Occupant safety
Panic alarm
Driving safety systems
Anti-theft systems 
     
        
        Page 75 of 416
75 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 one 
second. 
Deactivating
Press button1 again.
or
Insert SmartKey in starter switch.
iFor operation in the USA only: This de-
vice 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 82 of 416

82 Safety and SecurityAnti-theft systems
Anti-theft systemsImmobilizer
The immobilizer prevents unauthorized 
persons from starting your vehicle.
Activating
With the SmartKey: Removing the 
SmartKey from the starter switch acti-
vates the immobilizer.
With KEYLESS-GO*: Turning off the en-
gine by means of the KEYLESS-GO 
start/stop button on the gear selector 
lever activates the immobilizer.Deactivating
With the SmartKey: Inserting the 
SmartKey in the starter switch deacti-
vates the immobilizer.
With KEYLESS-GO*: Starting the en-
gine by means of the KEYLESS-GO 
start/stop button on the gear selector 
lever deactivates the immobilizer.
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 mechan-
ical key
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). 
     
        
        Page 83 of 416

83 Safety and Security
Anti-theft systems
Arming the alarm system
The alarm system is armed after locking 
the vehicle with the SmartKey or KEY-
LESS-GO*. The turn signal lamps blink 
three times to indicate that the alarm sys-
tem is activated. The indicator lamp in the 
central locking switch (
page 25) will 
blink after approximately 10 seconds 
when the alarm system is completely 
armed.Disarming the alarm system
The alarm system is disarmed when you 
unlock your vehicle with the SmartKey or 
KEYLESS-GO*. The turn signal lamps blink 
once to indicate that the alarm system is 
deactivatedCanceling the alarm
To cancel the alarm:
With the SmartKey
Insert the SmartKey in the starter 
switch.
or
Press the 
Œ
 or 
‹
 button.
With KEYLESS-GO*
Grasp the outside door handle.
or
Press the KEYLESS-GO* start/stop 
button.
iIf the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem provided that Tele Aid service was 
subscribed to and properly activated, 
and that necessary cellular service and 
GPS coverage are available.
iIf the turn signal lamps do not blink 
three times, a door or the hood may not 
be closed properly.
Close the respective element and lock 
the vehicle again. 
     
        
        Page 84 of 416

84 Safety and SecurityAnti-theft systemsTow-away alarm
Once the tow-away alarm is armed, a visual 
and audible alarm will be triggered when 
someone attempts to raise the vehicle.
Arming tow-away alarm
When you lock your vehicle, the tow-away 
alarm is automatically armed after about 
30 seconds.
When you unlock your vehicle, the 
tow-away protection disarms automatical-
ly.Disarming tow-away alarm
To prevent triggering the tow-away alarm 
feature, switch off the tow-away alarm be-
fore towing the vehicle, or when parking on 
a surface subject to movement, such as a 
ferry or auto train.
The switch is located on the center con-
sole.
1Tow-away alarm off switch
2Indicator lamp
Turn off the ignition and remove the 
SmartKey.
Press switch1.
Indicator lamp2 in the switch lights up 
briefly.
Exit vehicle and lock your vehicle with 
the SmartKey or (vehicles with 
KEYLESS-GO*) the lock button at each 
door handle.
The tow-away alarm remains disarmed un-
til you lock your vehicle again.
iThe tow-away protection alarm is trig-
gered, for example, if the vehicle is lift-
ed on one side.
If the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem, provided Tele Aid service was 
subscribed to and properly activated 
and that necessary cellular service and 
GPS coverage are available.
iYou cannot disarm the tow-away alarm 
if the ignition is turned on. 
     
        
        Page 87 of 416

87 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press button
Œ
.
All turn signal lamps blink once. The 
locking knobs in the doors move up.
The anti-theft alarm system is switched 
off. If it is dark, the locator lighting 
switches on.
The vehicle will lock again automatically 
within approximately 40 seconds of un-
locking if:
neither door nor trunk is opened
the SmartKey is not inserted in the 
starter switch
the central locking switch is not acti-
vatedGlobal locking
Press button
‹
.
All turn signal lamps blink three times. 
The locking knobs in the doors move 
down.
The anti-theft alarm system is activat-
ed.Selective setting
If you frequently travel alone, you may wish 
to reprogram the SmartKey so that 
pressing
Œ
 only unlocks the driver’s 
door and the fuel filler flap.
Press and hold buttons
Œ
 and
‹
 
simultaneously for about five seconds 
until battery check lamp5 blinks twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler 
flap
Press button
Œ
 once.
Global unlocking
Press button
Œ
 twice.
Global locking
Press button
‹
.