56 Getting started
Parking and locking
Releasing seat belts
Press the seat belt release button
(
page 44).
Allow the retractor to completely
rewind the seat belt by guiding the
latch plate.
Locking
Exit the vehicle and close all doors and
the trunk.
Press lock button‹ on the
SmartKey (
page 32).
All turn signal lamps flash three
times.
An acoustic signal sounds three
times.
For more information, see “Factory
setting” (
page 93).
The locking knobs in the doors
move down.
The anti-theft alarm system* is
armed.
For more information, see “Locking and
unlocking” (
page 92).
!Make sure the seat belt retracts fully so that
the seat belt and/or latch plate cannot get
caught or pinched in the door or in the seat
mechanism. This can damage the seat belt and
impair the effectiveness of the seat belt, and/or
cause damage to the door and/or door trim pan-
el. Such damage is not covered by the
Mercedes-Benz Limited Warranty.
Damaged seat belts must be replaced. Contact
an authorized Mercedes-Benz Center.
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 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. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
iIf you hear a warning signal you have
forgotten to switch off the headlamps before
opening the driver’s door.
In addition the message
Switch off lights
appears in the multifunction display.
Switch off the headlamps.
93 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
The anti-theft alarm system* is dis-
armed.
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 personal injury.
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 interfer-
ence, and
(2) this device must accept any interference
received, including interference 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 interference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iYou can also open or close the windows and
the tilt/sliding sunroof* using the SmartKey
(
page 223).
!If you can no longer lock or unlock the vehi-
cle with the SmartKey, then either the batteries
in the SmartKey are discharged, the SmartKey is
malfunctioning or the vehicle battery is drained.
Try second SmartKey.
Check the batteries in the SmartKey
(
page 95) and replace them if necessary
(
page 366).
Use the mechanical key to unlock the driv-
er’s door (
page 361) and the trunk
(
page 362).
Use the mechanical key to lock the driver’s
door (
page 362) and the trunk
(
page 99).
Have the vehicle battery and the battery con-
nections checked (
page 383).
If the SmartKey is malfunctioning, contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
iWhen unlocking or locking the vehicle with
the SmartKey an acoustic signal sounds. The
acoustic signal is activated at the factory. If you
wish to deactivate the feature, or adjust its signal
volume, contact an authorized Mercedes-Benz
Center.
95 Controls in detail
Locking and unlocking
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds un-
til Battery check lamp5 (
page 92)
flashes twice.
Unlocking and opening the trunk
You can unlock and open the trunk
separately.
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
Press buttonŠ until trunk lid
unlocks and begins to open.
The trunk can also be opened from its
inside in an emergency, see “Trunk emer-
gency release” (
page 98).
Checking the batteries
Press button‹ orŒ.
Battery check lamp (
page 92) comes
on briefly to indicate that the SmartKey
batteries are in order.
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 immediately to your
car insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a
replacement.
!The trunk lid swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance.
iIf the trunk does not open, it is still locked
separately (
page 99).
!If the battery check lamp does not come on
briefly during check, then the SmartKey batter-
ies are discharged.
Replace the batteries (
page 366).
You can obtain the required batteries at any
authorized Mercedes-Benz Center.
iIf the batteries are checked within signal
range of the vehicle, pressing the‹ orŒ
button will lock or unlock the vehicle
accordingly.
116 Controls in detail
Lighting
Interior lighting
The controls are located in the overhead
control panel.
1Rear interior lighting on/off
2Right front reading lamp on/off
3Rocker switch for automatic control
system
4Left front reading lamp on/offDeactivating automatic control
Press the= symbol on rocker
switch3.
The interior lighting remains switched
off in darkness, even when you
unlock the vehicle
remove the SmartKey from the
starter switch
open a door
open the trunkActivating automatic control
Press rocker switch3 to center
position.
The interior lighting switch on in
darkness, when you
unlock the vehicle
remove the SmartKey from the
starter switch
open a door
open the trunk
The interior lighting switches off after ap-
proximately 10 seconds, see “Setting inte-
rior lighting delayed shut-off”
(
page 142).
!An interior lamp switched on manually does
not go out automatically.
Leaving an interior lamp switch in the ON posi-
tion for extended periods of time with the engine
turned off could result in a discharged battery.
iThe interior lighting is factory-set to auto-
matic mode.
iIf a door remains open, the interior lighting
switches off automatically after approximately
5minutes.
125 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5Menu6Menu7
Standard
displayAUDIONAV*Vehicle status
message memorySettingsTrip computerTEL*
(page 126)(page 127)(page 129)(page 130)(page 131)(page 144)(page 146)
Commands/submenus
Run Flat
Indicator*
(Canada only)Selecting radio
stationShow route guid-
ance instructions,
current direction
traveledCall up vehicle mal-
function, warning and
system status messag-
es stored in memory
1
1The vehicle status message memory menu is only displayed if there is a message stored.
Reset to
factory
settingsFuel consumption
statistics from
startLoad phone
book
Digital speed-
ometer or out-
side temperatureSelecting satel-
lite radio sta-
tion* (USA only)Instrument
cluster sub-
menuFuel consumption
statistics since
the last resetSearch for
name in
phone book
Call up main-
tenance service
displayOperating
CD player* Time/Date
submenuDistance to
empty
Lighting
submenu
Vehicle
submenu
Convenience
submenu
131 Controls in detail
Control system
Should the vehicle’s system record any
conditions while driving, the number of
messages will reappear in the multifunc-
tion display when the SmartKey in the
starter switch is turned to position0 or
removed from the starter switch.Settings menu
In the
Settings menu there are two
functions:
The function Reset to factory
settings
, with which you can reset all
the settings to the original factory
settings.
A collection of submenus with which
you can make individual settings for
your vehicle.
Press buttonè orÿ repeatedly
until the
Settings menu appears in the
multifunction display.Resetting all settings
You can reset all the functions of all
submenus to the factory settings.
Press the reset button in the
instrument cluster (
page 118) for
approximately 3 seconds.
The request to press the reset button
once more to confirm appears in the
multifunction display.
Press the reset button once more.
The functions of all the submenus will
reset to factory settings.
iThe vehicle status message memory will be
cleared when you turn the SmartKey in the start-
er switch to position1 or2. You will then only
see high-priority messages in the multifunction
display (
page 333).
140 Controls in detail
Control system
Press buttonæ orç to select
manual operation (
Manual) or daytime
running lamp mode (
Constant).
With daytime running lamp mode activated
and the exterior lamp switch in
positionM orU, the low beam
headlamps are switched on when the
engine is running.
In low ambient light conditions the
following lamps will switch on additionally:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
For more information on the daytime
running lamp mode, see “Lighting”
(
page 109).Setting locator lighting
With the locator lighting feature activated
and the exterior lamp switch in
positionU, the following lamps will
switch on during darkness when the vehi-
cle is unlocked with the SmartKey:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
The locator lighting switches off when the
driver’s door is opened.If you do not open a door after unlocking
the vehicle with the SmartKey, the lamps
will switch off automatically after
approximately 40 seconds.
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Surround lighting
appears in the multifunction display.
The selection marker is on the current
setting.
Press buttonæ orç to switch
the locator lighting function
On or Off.
iFor safety reasons, resetting the Lighting
submenu to factory settings (
page 131) while
driving will not deactivate the daytime running
lamp mode.
The following message appears in the
multifunction display:
Lighting - Cannot be completely reset
to factory settings while driving.
192 Controls in detail
Audio system
Press RES soft key briefly.
The sound setting is reset depending
on the sound source activated.
Radio mode: STANDARD
CD/AUX mode: SURROUND
Telephone: SPEECH
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.
Returning sound functions to factory
settings
Press O button to call up settings
menu in the display.
Press RES soft key briefly; the respec-
tive sound function is reset to its center
level.
or
Press and hold RES soft key until RESET
appears in the display.
The sound settings for bass and treble
are returned to their center level and
the volume is set to a predefined level.
Vehicles with sound system*:
The sound setting is reset depending
on the sound source activated.
Radio mode: STANDARD
CD/AUX mode: SURROUND
Telephone: SPEECH
The radio switches back to the
standard radio menu 4 seconds
after the last soft key is pressed.
Adjusting volume distribution
Call up fader and balance functions by
pressing the P button.Fader
Press P button repeatedly until
FADER appears in the display.
Press V or W soft key.
The volume is distributed accordingly
between the front and rear of the
vehicle.
or
Press RES soft key briefly.
The fader is reset to its center level.
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.