Page 94 of 474

93 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
Remove the SmartKey from the starter
switch.
Deactivating
Switch on the ignition (
page 33).
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 system will also be triggered
when
someone attempts to raise the vehicle
opening the vehicle with the
mechanical key
someone opens a door from the inside
someone opens the trunk with the
emergency release button
iStarting the engine will also deactivate
the immobilizer.
In 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).
iThe alarm will stay on even if the acti-
vating element (e. g. a door) is immedi-
ately closed.iIf the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system* (
page 265) provid-
ed Tele Aid service was subscribed to
and properly activated, and that neces-
sary cellular service and GPS coverage
are available.
Page 95 of 474
94 Safety and SecurityAnti-theft systemsArming the alarm system
The indicator lamp is in the switch for the
tow-away alarm* in the center console.
1Indicator lamp
Lock your vehicle with the SmartKey.
The turn signal lamps flash three times
to indicate that the alarm system is
activated.
Indicator lamp1 begins to flash after
approximately 30 seconds after arming
the alarm system.Disarming the alarm system
Unlock your vehicle with the SmartKey.
The turn signal lamps flash once to
indicate that the alarm system is dis-
armed.
Canceling the alarm
To cancel the alarm:
Press theŒ or‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
iIf the turn signal lamps do not flash
three times, one of the following
elements 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 after approximately 40 seconds if
neither a door nor the trunk lid was
opened.
Page 96 of 474

95 Safety and Security
Anti-theft systems
Tow-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
Lock your vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.
Disarming tow-away alarm
To prevent triggering the tow-away alarm,
switch off the tow-away alarm feature
before 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
console.
1Tow-away alarm off switch
2Indicator lamp
Switch off ignition (
page 33).
Remove the SmartKey from the starter
switch.
iThe tow-away protection alarm is
triggered, for example, if the vehicle is
lifted on one side.
If the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system* (
page 265) provid-
ed Tele Aid service was subscribed to
and properly activated, and that neces-
sary cellular service and GPS coverage
are available.
iWhen you unlock your vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
Page 97 of 474
96 Safety and SecurityAnti-theft systems
Press tow-away alarm deactivation
switch1.
Indicator lamp2 in tow-away alarm
deactivation switch comes on briefly.
Exit your vehicle.
Lock your vehicle with the SmartKey.
The tow-away alarm remains disarmed
until you lock your vehicle again.Canceling the alarm
To cancel the alarm:
Press theŒ or‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.
Page 122 of 474

121 Controls in detail
Lighting
Locator lighting and night security
illumination
The locator lighting and the night security
illumination are described in the “Control
system” section, see “Set locator lighting”
(page 150) and “Setting night security
illumination” (
page 151).
Fog lampsFront fog lamps
Switch on the low beam headlamps
(page 118).
Pull out the exterior lamp switch to first
stop.
The front fog lamps switch on.
The green indicator lamp‡ in the
exterior lamp switch comes on
(page 118).
Push in the exterior lamp switch.
The front fog lamps switch off.
The green indicator lamp‡ in the
exterior lamp switch goes out.
Warning!
G
In low ambient lighting or foggy conditions,
only switch from positionU toB with
the vehicle at a standstill in a safe location.
Switching fromU toB will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions
may result in an accident.
iFog lamps will operate with the parking
lamps and/or the low beam headlamps
on. Fog lamps should only be used in
conjunction with low beam headlamps.
Consult your State or Province Motor
Vehicle Regulations regarding permis-
sible lamp operation.iFog lamps cannot be switched on with
the exterior lamp switch in
positionU. For switching on the fog
lamps, turn the exterior lamp switch to
positionB first.
Page 143 of 474
142 Controls in detailControl systemThe table below shows what settings can
be changed within the various menus. Detailed instructions on making individual
settings can be found on the following
pages.Instrument cluster
Time/Date
Lighting
Vehicle
Convenience
Select speedometer
display mode
Time synchronization with head
unit*
Set daytime running lamp
mode (USA only)
Set automatic lock-
ing
Activate easy-entry/exit
feature
Select language
Set time (hours)
Set locator lighting
Set parking position for
exterior rear view mirror
Select display (speed
display or outside
temperature) for status
indicator
Set time (minutes)
Set night security
illumination
Select automatic time change
(Daylight Saving Time (DST)
summer/Standard time winter)
Set interior lighting de-
layed shut-off
Set date (month)Set date (day)Set date (year)
Page 150 of 474
149 Controls in detail
Control system
The selection marker is on the year
setting.
Press buttonæ orç to set the
year.Lighting submenu
Access the
Lighting
submenu via the
Settings
menu. Use the
Lighting
submenu to change the lamp and lighting
settings on your vehicle.
The following functions are available:Set daytime running lamp mode
(USA only)
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Hdlamp mode
appears
in the multifunction display.
Function
Page
Set daytime running lamp mode
(USA only)
149
Set locator lighting
150
Set night security illumination
151
Set interior lighting delayed
shut-off
152
iThis function is not available in
countries where the daytime running
lamp mode is mandatory and therefore
in a constant mode.
Page 152 of 474

151 Controls in detail
Control system
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.
Turn the exterior lamp switch to
positionU when exiting the vehicle
(page 118).
The locator lighting feature is
activated.Set night security illumination
(Headlamps delayed shut-off)
Use this function to set whether or not the
exterior lamps illuminate during darkness
after exiting the vehicle and all doors
closed.
With the delayed shut-off feature activated
and the exterior lamp switch in
positionU before the engine is turned
off, the following lamps will switch on
when the engine is turned off and remain
lit for appriximately 15 seconds:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
If after turning off the engine you do not
open a door or do not close an opened
door, the lamps will automatically switch
off after 60 seconds.
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Hdlamp delay off
appears in the multifunction display.
The selection marker is on the current
setting.
iYou can reactivate this function within
10 minutes by opening a door.