Page 111 of 458

109 Controls in detail
Locking and unlocking
Trunk lid emergency release
The emergency release button is located
on the inside of the trunk lid.
1Emergency release button
Briefly press emergency release
button1.
The trunk unlocks and the trunk lid
opens.Illumination of the emergency release but-
ton:
The button will flash for 30 minutes af-
ter opening the trunk.
The button will flash for 60 minutes af-
ter closing the trunk.iThe emergency release button unlocks
and opens the trunk while the vehicle is
standing still or in motion.iThe emergency release button does
not open the trunk lid if the vehicle bat-
tery is discharged or disconnected.
iIf the emergency release button is
pressed and the vehicle was centrally
locked, the exterior lamps will flash and
the alarm will sound as the trunk lid
opens:
To cancel the alarm, do one of the fol-
lowing:
Insert the SmartKey in the starter
switch.
Press button Œ or ‹ on the
SmartKey.
In vehicles with KEYLESS-GO*:
Grasp the outside door handle.
The SmartKey with KEYLESS-GO
must be within 3 ft. (1 m) of the ve-
hicle.
Press the KEYLESS-GO* start/stop
button (
page 35).
The SmartKey with KEYLESS-GO
must be inside the vehicle.
Page 113 of 458

111 Controls in detail
Locking and unlocking
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 be-
fore starting to drive.
The fuel filler flap cannot be locked or un-
locked with the central locking or unlock-
ing switch, respectively.The switches are located on the upper part
of the front center console.
Central locking/unlocking switches1Central locking switch
2Central unlocking switch
Locking
Press central locking switch 1.
If both doors are closed, the vehicle
locks.
Unlocking
Press central unlocking switch 2.
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you,
take the SmartKey with KEYLESS-GO* with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause an ac-
cident and/or serious personal injury.
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 with the SmartKey or the with
KEYLESS-GO*, it will not unlock using
the central unlocking switch2.
If the vehicle was previously locked
with the central locking switch1:
While in the global remote control
mode, the vehicle is unlocked com-
pletely when a door is opened from
the inside.
While in the selective remote con-
trol mode, only the door opened
from inside is unlocked.
Page 114 of 458

112 Controls in detailSeatsFor more information on seat adjustment,
see “Adjusting” (
page 37).
Easy-entry/exit feature
This feature allows for easier entry into and
exit from the vehicle.
The easy-entry/exit feature can be activat-
ed or deactivated in the
CONVENIENCE
sub-
menu of the control system (
page 164).When exiting the vehicle, with the easy-en-
try/exit feature activated and depending
on your selection, the steering wheel tilts
upwards and/or the driver’s seat moves a
few inches to the rear when you:
remove the SmartKey from the starter
switch,
or
open the driver’s door with the
SmartKey in starter switch position 0
or 1 or the KEYLESS-GO* start/stop
button (
page 35) in position 1.
Warning!
G
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver’s seat when the easy-en-
try/exit feature is activated.
To cancel seat/steering wheel movement,
do one of the following:
Press seat adjustment switch
(page 38).
Move steering column stalk
(page 42).
Press one of the memory position but-
tons (
page 123).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
Page 115 of 458

113 Controls in detailSeats
When entering the vehicle, with the
easy-entry/exit feature activated, the
steering wheel or, depending on your se-
lection, the steering wheel and driver’s
seat will return to their last set memory po-
sition or a factory-set maximum forward
position when you:
close the driver’s door with the ignition
switched on
insert the SmartKey into the starter
switch or press the KEYLESS-GO*
start/stop button (
page 35) once
with the driver’s door closed.
iIf the current position for the steering
wheel is in the uppermost tilt position,
the steering wheel will no longer be
able to move upward when the
easy-entry/exit feature is activated.
If the current seat position falls into a
factory-set position range and the sys-
tem recognizes the current seat posi-
tion to be rearward enough for easy
entry and exit, the driver’s seat will not
move to the rear when the easy-entry/
exit feature is activated.
iFor safety reasons, the driver’s seat will
not return to its last set position with
the easy-entry/exit feature activated if
the system recognizes the last set posi-
tion as an extreme forward position. In-
stead, the driver’s seat will remain at or
move to a factory-set maximum for-
ward position. To again fully return the
driver’s seat to your last set position or
to memory position, adjust the seat to
the desired position or press and hold
the respective memory position button
(page 123).
Page 119 of 458
117 Controls in detailSeats
Lumbar support
You can adjust the contour of the seat’s
lumbar support to best support your spine.
The thumbwheels for the driver’s and front
passenger’s seat are located on the outer
side of the seat.
1Thumbwheel
Switch on ignition (
page 34).
Set the lumbar support between 0
and 5.
Multicontour backrest*
The multicontour backrest has inflatable
air cushions built into the seat backrest to
provide additional lumbar and side sup-
port.
The seat backrest cushion height and cur-
vature can be continuously varied with
switches on the right side of the seat after
turning the SmartKey in the starter switch
to position2 or pressing the KEYLESS-GO*
start/stop button (
page 35) twice.1Shoulder region support
2Side bolster adjustment
3Massage function (PULSE)
4Lumbar region support
Switch on ignition (
page 34).
Shoulder region support
Press æ or ç on switch1.
The air cushion inflates or deflates.
Page 124 of 458

122 Controls in detailMemory function
You can store up to three different settings
per SmartKey or SmartKey with
KEYLESS-GO*.
The following settings are saved for each
stored position the driver's door:
Driver’s seat and seat backrest posi-
tion
Settings for multicontour seat*
Steering wheel position
Exterior rear view mirror position
Automatic climate control
These key-dependent memory settings
can be deactivated if desired. For informa-
tion on key-dependent memory settings,
see “Setting key-dependency”
(
page 163).The following settings are not key-depen-
dent. They are stored when using the but-
tons on the passenger door:
Front passenger seat, backrest and
head restraint position, and settings for
multicontour seat*
!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 air bags (
page 63) for
proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the inside and
outside 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 126 of 458

124 Controls in detailMemory functionStoring exterior rear view mirror park-ing position
For easier parking, you can adjust the pas-
senger-side exterior rear view mirror so
that you can see the right rear wheel as
soon as you engage reverse gearR.
For information on activating the parking
position, see “Setting parking position for
exterior rear view mirror” (
page 165).The buttons are located on the driver’s
door.
1Passenger-side exterior rear view mir-
ror button
2Adjustment button
MMemory button
Stop the vehicle.
Switch on ignition (
page 34).
Press button1.
The passenger-side exterior rear view
mirror is selected.
Adjust the passenger-side exterior rear
view mirror with button2 so that you
see the rear wheel and the road curb.
Press memory button M.
Within three seconds, press bottom of
adjustment button2 on ƒ.
The parking position is stored if the
mirror does not move.
iYou can store a parking position for the
passenger-side exterior rear view mir-
ror for each SmartKey or SmartKey
with KEYLESS-GO*.
iIf the mirror does move, repeat the
above steps. After the setting is stored,
you can move the mirror again.
Page 128 of 458

126 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch. For exterior lamp
switch, see (
page 125).Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:
Low beam headlamps
Tail and parking lamps
License plate lamps
Side marker lamps.
iWith the SmartKey removed from the
starter switch or the engine turned off
with KEYLESS-GO* and the driver’s
door open, a warning sounds if the
parking lamps or low beam headlamps
are switched on.
The message
TURN OFF LIGHTS
appears in the multifunction display.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.
the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others, acti-
vate headlamps by turning exterior lamp
switch to B when driving or when traffic
and/or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from position U to B with the
vehicle at a standstill. Switching from U
to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle's lights at all
times.iThe front fog lamps and rear fog lamp
cannot be switched on manually with
exterior lamp switch in positionU.
To activate the fog lamps, turn exterior
lamp switch to positionB and pull
the exterior lamp switch to first or sec-
ond stop (
page 128).