Page 29 of 480
28 At a glanceMultifunction steering wheel
Item
Page
1
Left multifunction display in
the speedometer
135
2
Right multifunction display
in the tachometer
135
Operating the control sys-
tem
136
3
Selecting the submenu or
setting the volume:
Press buttonçdown/to decreaseæup/to increase
4
Telephone*:
Press buttonsto take a calltto end a call
Item
Page
5
Menu systems:
Press buttonÿfor previous menuèfor next menu
6
Moving within a menu:
Press buttonjfor next displaykfor previous display
Page 31 of 480
30 At a glanceCenter consoleLower part
Item
Page
1
Parking assist (Parktronic
system)* deactivation
switch
223
2
Active Body Control (ABC)
button
219
3
Tow-away alarm switch
93
4
Retractable hardtop
open/close control with
buttons for roll bar
195,
75
5
Exterior rear view mirror ad-
justment
44
Item
Page
6
Vehicle level control switch
220
7
ESP
® switch
86
8
Thumbwheel for setting dis-
tance for Distronic*
215
9
Distance warning function*
on/off switch
215
a
Program mode selector
switch for automatic trans-
mission
174
b
Gear selector lever for
automatic transmission
168
Page 36 of 480

35 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.
The function of the SmartKey overrules the
KEYLESS-GO function.
Grasp an outside door handle.
All turn signal lamps flash once. The
locking knobs on the doors move up.
The anti-theft alarm system is dis-
armed.
The electro-hydraulic brake system is
activated.If the SmartKey with KEYLESS-GO is inside
the vehicle, pressing the KEYLESS-GO
start/stop button on the gear selector le-
ver corresponds to turning the SmartKey
to the various starter switch positions
(
page 37).
For more information, see “SmartKey with
KEYLESS-GO*” (
page 100).
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.
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. 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.
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 46 of 480
45 Getting started
Adjusting
The buttons are located on the lower part
of the center console.
1Driver’s side exterior rear view mirror
button
2Passenger-side exterior rear view mir-
ror button
3Adjustment button
Switch on the ignition (
page 36).
Press button1 for the left mirror or
button2 for the right mirror.
Push adjustment button3 up, down,
left, or right according to the desired
setting.For more information, see “Good visibility”
(
page 177).!If an exterior rear view mirror was forc-
ibly pushed forward (hit from the rear)
or forcibly pushed rearward (hit from
the front), reposition it by applying firm
pressure until it snaps into place. The
mirror housing is then properly posi-
tioned and you can adjust the mirror in
the usual manner.iThe memory function (
page 121) lets
you store the setting for the exterior
rear view mirrors together with the set-
tings for the steering wheel and the
seat position.
Page 76 of 480

75 Safety and Security
Occupant safety
Automatic comfort-fit feature seat belt
The automatic comfort-fit feature reduces
the retracting force of the seat belts when
they are in normal use.
Roll barThe roll bar raises automatically in an acci-
dent or in a critical driving situation. You
can also raise and lower the roll bar manu-
ally using the buttons provided.
The buttons for the roll bar are on the cen-
ter console under the roof switch.
1Lower roll bar
2Raise roll bar
The roll bar can be moved manually when
the ignition is switched on (
page 36).
Warning!
G
An emergency tensioning device (ETD) that
was activated must be replaced.
When disposing of the emergency tension-
ing device, our safety instructions must be
followed. These are available at your autho-
rized Mercedes-Benz Center.!Do not place objects heavier than
20 lbs (9 kg) on the front passenger
seat. This could cause the front or side
impact airbag on the passenger side
and, with the seat belt fastened to
secure the object, the ETD to deploy in
a crash which exceeds the system's
deployment threshold.
Warning!
G
This vehicle is a two occupant vehicle. The
rear storage area is not intended for use by
occupants and is not equipped for properly
seating or restraining occupants. Thus this
area should never be used by any persons.
Before operating the roll bar switch make
sure that the roll bar’s path is clear and no
persons are injured by the moving roll bar
due to inattention. Raising or lowering of the
roll bar could injure someone inadvertently
occupying the rear storage area.
For your own safety, we recommend to drive
with the roll bar raised if the outside temper-
ature is below +5°F (-15°C).!If the outside temperature falls below
+5°F (-15°C), the roll bar must be
raised manually using the buttons pro-
vided to avoid damaging the hydraulics.
iWhen the roll bar is raised automatical-
ly, you will hear a ratcheting sound.
Page 99 of 480

98 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press button Œ.
All turn signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
The vehicle will lock again automatically
and reactivate the alarm system within ap-
proximately 40 seconds of unlocking if:
neither door nor trunk is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not acti-
vated
Global locking
Press button ‹.
With the trunk and all doors closed, all
turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door, interior lockable storage compart-
ments and the fuel filler flap.
Press and hold buttons Œ and
‹simultaneously for about
6 seconds until battery check lamp5
flashes twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler
flap
Press button Œ once.
All turn signals flash once. The locking
knob in the driver’s door moves up.
The anti-theft alarm system is disarmed.Global unlocking
Press button Œ twice.
All turn signals flash once. The locking
knobs in the doors move up. The anti-theft
alarm system is disarmed.
Global locking
Press button ‹.
All turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.
Restoring to factory setting
Press and hold buttons Œ and ‹
simultaneously for about 6 seconds
until battery check lamp5
(page 96) flashes twice.
Page 102 of 480

101 Controls in detail
Locking and unlocking
SmartKey with KEYLESS-GO1‹Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4ŒUnlock button
5Battery check lamp
6Â Panic button (
page 81)
For information on using the SmartKey
buttons, see “SmartKey” (page 96).
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.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic 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 105 of 480

104 Controls in detailLocking and unlockingGlobal locking
Press lock button on an outside door
handle (
page 62) or trunk
(
page 105).
With the trunk and all doors closed, all
turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so that grasping a door han-
dle only unlocks the driver’s door, interior
lockable storage compartments and the
fuel filler flap.
Press and hold buttons Œ and ‹
simultaneously for about 6 seconds
until battery check lamp5
(page 101) flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:Unlocking the driver’s door and fuel fill-
er flap
Grasp the driver’s door handle.
All turn signals flash once. The locking
knob in the driver’s door moves up. The
anti-theft alarm system is disarmed.
Global unlocking
Grasp the door handle on the passen-
ger side.
All turn signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
Global locking
Press lock button on an outside door
handle or trunk lid.
With the trunk and all doors closed, all
turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.Restoring to factory setting
Press and hold buttons Œ and ‹
simultaneously for about 6 seconds
until battery check lamp5
(page 101) flashes twice.
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the battery in the
SmartKey is discharged, the SmartKey
with KEYLESS-GO is malfunctioning or
the vehicle battery is drained.
Check the battery in the SmartKey
with KEYLESS-GO (
page 99) and
replace it if necessary
(
page 389).