Page 108 of 474

107 Controls in detail
Locking and unlocking
Pull the mechanical key out of the
SmartKey (
page 389).
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key clockwise to
position2 and remove the mechani-
cal key in that position to lock the
trunk.
The trunk remains locked even when the
vehicle is centrally unlocked.
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key counterclock-
wise to neutral position1 and remove
the mechanical key in that position to
unlock the trunk.
You can now open the trunk
(page 103).
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
You can deactivate the automatic locking
mode using the control system, see “Set
automatic locking” (
page 152).
Locking and unlocking from the inside
You can lock or unlock the doors and the
trunk from inside using the central locking
or unlocking switch. This can be useful, for
example, if you want to lock the vehicle
before starting to drive.
You cannot lock or unlock the fuel filler flap
with the central locking or unlocking
switch.
iYou can only cancel the separate trunk
locking mode by means of the
mechanical key.
iThe doors unlock automatically after an
accident if the force of the impact
exceeds a preset threshold.
To prevent the vehicle door locks from
locking, deactivate the automatic
central locking when the vehicle
is pushed or towed
is on a test stand
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 109 of 474
108 Controls in detailLocking and unlockingThe switches are located in the center
console.
1Central locking switch
2Central unlocking switchLocking
Press central locking switch1.
If all doors are closed, the vehicle
locks.
Unlocking
Press central unlocking switch2.
The vehicle unlocks.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked using the SmartKey, it will not
unlock using the central unlocking
switch2.
If the vehicle was previously locked
with the central locking switch1
while in the selective remote con-
trol mode, only the door opened
from the inside is unlocked.
while in the global remote control
mode, the complete vehicle is
unlocked when a door is opened
from the inside.
Page 112 of 474
111 Controls in detailSeats
Folding head restraints back with
switch in the center console
1Switch for rear seat head restraints
Start the engine (
page 48).
Press switch1.
The rear seat head restraints will fold
backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.Head restraint tilt (rear outer seats)
Two different head restraint angle
positions are available:
Press the release button (
page 110)
and tilt the head restraint to the
desired position.
Removing and installing rear seat head
restraints (rear outer seats)
Warning!
G
Make sure the head restraints engage when
placing them upright. Otherwise their
protective function cannot be assured.
iAdjust the head restraint in such a way
that it is as close to the head as
possible.iThe rear center seat head restraint
cannot be removed.
Page 126 of 474

125 Controls in detail
Lighting
Switching on hazard warning flasher
Press hazard warning flasher
switch1.
All turn signals are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1
again.
Interior lighting
The controls are located in the overhead
control panel.
1Rear interior lights on/off
2Right front reading lamp on/off
3Rocker switch for automatic control
system
4Left front reading lamp on/offAutomatic control
Activating
Press rocker switch3 to center
position.
Interior lamps are switched on in
darkness, when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
The interior lamps are switched off after a
preset time, see “Set interior lighting de-
layed shut-off” (
page 152).
iWith the hazard warning flasher
activated and the combination switch
set for either left or right turn, only the
respective turn signals will operate
when the SmartKey is in the starter
switch position1 or 2.iIf the hazard warning flasher has been
activated automatically, press hazard
warning flasher switch1 once to
switch it off.
iLeaving an interior light switch in the
ON position for extended periods of
time with the engine turned off could
result in a discharged battery.
iIf the door remains open, the interior
lamps switch off automatically after
approximately 5 minutes, when the
SmartKey is removed or in starter
switch position0.
Page 127 of 474

126 Controls in detailLightingDeactivating
Press the= symbol on rocker
switch3.
The interior lighting remains switched
off, even when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
Manual control
Switching all front interior lights on and
off
Press theW symbol on rocker
switch3.
The front interior lights come on.
Press rocker switch3 to center
position to activate the automatic
control.Switching rear interior lights on and off
Press buttonV.
The lights in the rear passenger
compartment come on.
Press buttonV again.
The lights in the rear passenger
compartment go out.
Switching front reading lamp on and off
Press right or left buttonX.
The right reading lamp comes on.
Press right or left buttonX again.
The right reading lamp goes out.
Door entry lamps
The appropriate door entry lamp switches
on if a door is opened in darkness and if
the interior lighting is switched to auto-
matic function.
The entry lamp switches off automatically
when the door is closed.Trunk lamp
The trunk lamp switches on if the trunk is
opened.
If you leave the trunk open for an extended
period of time, the trunk lamp will switch
off automatically after approximately
10 minutes.
iIf you turn the SmartKey in the starter
switch to position0 and switch off the
exterior headlamps, the door entry
lamps will remain lit for approximately
5minutes.
Page 128 of 474
127 Controls in detail
Instrument cluster
Instrument cluster
For a full view illustration of the instrument
cluster, see “At a glance” (
page 24).
1Reset button
The instrument cluster is activated when
you
open a door
switch on ignition (
page 33)
press reset button1
switch on the exterior lighting
You can change the instrument cluster
settings in the Instrument cluster submenu
of the control system (
page 143).
Instrument cluster illumination
Use reset button1 to adjust the
illumination brightness for the instrument
cluster.To brighten illumination
Turn reset button1 clockwise.
The instrument cluster illumination will
brighten.
To dim illumination
Turn reset button1 counterclock-
wise.
The instrument cluster illumination will
dim.
iThe instrument cluster illumination is
dimmed or brightened automatically to
suit ambient light conditions.
The instrument cluster illumination will
also be adjusted automatically when
you switch on the vehicle’s exterior
lamps.
Page 131 of 474

130 Controls in detailControl systemThe control system is activated as soon as
the SmartKey in the starter switch is
turned to position1. The control system
enables you to
call up information about your vehicle
change vehicle settings
For example, you can use the control
system to find out when your vehicle is
next due for service, to set the language
for messages in the instrument cluster
display, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Trip odometer
2Main odometer
3Current program mode (automatic
transmission*)
4Current gear selector lever
position/gear range (automatic trans-
mission*)
5Digital clock
6Status indicator (outside tempera-
ture/digital speedometer)
iThe displays for the audio systems
(radio, CD player) will appear in English,
regardless of the language selected.
Warning!
G
A driver’s attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions
permit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
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)