Page 98 of 440

98 Controls in detailLocking and unlocking
Trunk lid opening/closing system*
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The switch for opening and closing the
trunk is located on the driver’s door.
1Remote trunk lid opening switch
2Remote trunk lid closing switch
Press remote trunk lid opening
switch1 until the trunk lid begins to
open.The trunk lid opens. The indicator lamp
in the switch comes on and remains lit
until the trunk is closed.
Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle
interior.iDo not place the SmartKey in the open
trunk. You may lock yourself out.iVehicles with KEYLESS-GO*:
To prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO* is
recognized inside the vehicle or in the
trunk.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance. To stop
the opening procedure, press the re-
mote trunk lid opening or closing
switch.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 104)
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 97). The
turn signals will flash three times to
confirm locking.
Page 99 of 440

99 Controls in detail
Locking and unlocking
The trunk can also be opened using the
SmartKey (
page 88) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 103).
Limiting opening height of trunk lid
The trunk lid opening height can be limited
when transporting goods on a roof rack
(e.g. presence of an MB sport luggage con-
tainer). When activated, the trunk lid opens
to approximately the height of the roof
edge.
With the trunk lid closed, press the re-
mote trunk lid closing switch2
(page 99) and hold for at least five
seconds.
Depending on its previous status, the
opening height limitation is then
switched on or off.
You can activate or deactivate the opening
height limitation with the control system,
see “Setting trunk lid opening limiter (vehi-
cles with trunk lid opening/closing sys-
tem*)” (page 149).Closing the trunk from the inside
Press the remote trunk lid closing
switch2 (
page 98) until the indica-
tor lamp in the switch goes out and the
trunk lid is closed.
To interrupt the closing procedure:
Release remote trunk lid closing
switch2.
If the trunk lid comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the trunk reopens slightly.Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle
interior.
Warning!
G
Maintain sight of trunk area while operating
the door mounted switch. Monitor the clos-
ing procedure carefully to ensure that no
one is in danger of being injured.
To interrupt the closing procedure, release
the door mounted remote trunk lid closing
switch.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with you and lock your vehicle. Do
not leave children unattended in the vehicle,
or with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
Page 105 of 440

105 Controls in detail
Locking and unlocking
Separately unlocking the trunk
Pull the mechanical key out of the
SmartKey (
page 343).
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key counterclock-
wise to neutral position1.
You can now open the trunk
(page 96).
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
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 ap-
proximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open doors only when conditions are
safe to do so.
You can deactivate the automatic locking
using the control system (
page 149).
For more information on towing the vehi-
cle, see “Towing the vehicle” (page 368).
Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle
interior.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle
is pushed or towed
is on a test stand
Page 109 of 440

109 Controls in detailSeats
Rear seats head restraints
Head restraint height
1Release button
Raising:
Manually adjust the height of the head
restraint by pulling it upward.
If the head restraint is fully retracted,
push release button1 and pull the
head restraint out.Lowering:
To lower the head restraint, push re-
lease button1 and press down on the
head restraint.Folding head restraints back with re-
lease button
1Release button
Push release button1.
The head restraints will fold backward.
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that the center of
the head restraint supports the back of the
head at eye level. This will reduce the poten-
tial for injury to the head and neck in the
event of an accident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
iYou can also fold the head restraints
back using the switch in the center
console.
Page 112 of 440
112 Controls in detailSeatsMulticontour seat*
The multicontour seat has a movable seat
cushion and inflatable air cushions built
into the backrest to provide additional lum-
bar and side support.
The seat cushion movement, backrest
cushion height and curvature can be con-
tinuously varied with switches on the right
side of the seat after starting the engine.
1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustment
Start the engine.
Seat cushion depth
Adjust the seat cushion depth to the
length of your upper leg using
switch1.
Backrest contour
Adjust the contour of the backrest to
the desired position using switches2
and3.
Backrest side bolsters
Adjust the backrest side bolsters so
that they provide good lateral support
using switch4.
Page 116 of 440

116 Controls in detailMemory function
Memory function
The memory button and stored position
switch are located on the door.
You can store up to three different settings
for each SmartKey or SmartKey with
KEYLESS-GO*.
The following settings are saved for each
stored position:
Driver’s seat, backrest and restraint
position
Settings for multicontour seat*
Steering wheel position
Driver’s side exterior rear view mirror
position
Passenger side exterior rear view mir-
ror position
These key-dependent memory settings
can be deactivated if desired
(
page 151).1Memory button
2Stored position button
Make sure the ignition is switched on
or the relevant door is open and the
SmartKey is inserted in the starter
switch.
!Prior to operating the vehicle, the driv-
er should check and adjust the seat
height, seat position fore and aft, and
seat backrest angle if necessary, to en-
sure adequate control, reach and com-
fort. The head restraint should also be
adjusted for proper height. See also the
section on airbags (
page 59) for
proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the interior and
exterior rear view mirrors should be ad-
justed for adequate rear vision.
Fasten seat belts. Infants and small
children should be seated in a properly
secured restraint system that complies
with U.S. Federal Motor Vehicle Safety
Standards 213 and 225 and Canadian
Motor Vehicle Safety Standards 213
and 210.2.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
Page 149 of 440

149 Controls in detail
Control system
Setting automatic locking
Use this function to activate or deactivate
the automatic central locking. With the au-
tomatic central locking system activated,
the vehicle is centrally locked at vehicle
speeds of approximately 9 mph
(15 km/h).
Move the selection marker with
theæ orç button to the
Vehi-
cle
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
Automatic door lock
.
The selection marker is on the current
setting.
Pressæ orç to switch Automatic door lock
on or
off
.Setting trunk lid opening limiter (vehi-
cles with trunk lid opening/closing sys-
tem*)
Use this function to activate or deactivate
the trunk lid opening limiter function. You
can also activate or deactivate the opening
height limitation with the trunk lid closing
switch, see (
page 99).
Move the selection marker with
theæ orç button to the Vehicle
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
Opening limiter Trunk lid
.
The selection marker is on the current
setting.
Pressæ orç to switch Opening limiter trunk lid
on or
off
.Convenience submenu
Access the
Convenience
submenu via the
Settings
menu. Use the
Convenience
sub-
menu to change the settings for a number
of convenience features. The following
functions are available:
Function
Page
Activate easy-entry/exit feature
150
Set key-dependency
151
Set parking position for exterior
rear view mirror
151
Page 234 of 440

234 Controls in detailDriving systemsRange of the sensors
To function properly, the sensors must be
free of dirt, ice, snow and slush. Clean the
sensors regularly, being careful not to
scratch or damage the sensors.Front sensors
Rear sensors
Minimum distance
If the system encounters an obstacle in
this range, all the warning lamps come on
and you hear a warning signal. If the obsta-
cle is closer than the minimum distance,
the actual distance may no longer be indi-
cated by the system.
Center
approx. 39 in (100 cm)
Corners
approx. 23,5 in (60 cm)
Center
approx. 47 in (120 cm)
Corners
approx. 32 in (80 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
planters or trailer hitches). The Parktro-
nic system will not detect such objects
at close range and damage to your ve-
hicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. truck air brakes or jackham-
mers) may impair the operation of the
Parktronic system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)