Page 83 of 498

82 Safety and SecurityOccupant safetyBlocking of rear door window operation
1Override switch
2Indicator lamp
Press override switch1.
Indicator lamp2 comes on. The rear
door windows can no longer be operat-
ed using the switches located in the
rear doors.For more information on power windows,
see the “Controls in detail” section
(
page 214).
!Operation of the rear door windows
with the switches located on the door
control panel of the driver’s door is still
possible.
Warning!
G
Activate the override switch when children
are riding in the back seats of the vehicle.
The children may otherwise injure them-
selves, e.g. by becoming trapped in the win-
dow opening.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment can cause an accident
and/or serious personal injury.
Page 98 of 498
97 Controls in detail
Locking and unlocking
Seats
Memory function
Lighting
Instrument cluster
Control system
Automatic transmission
Good visibility
4-zone automatic climate control
Power windows
Power tilt /sliding sunroof
Driving systems
Loading
Useful features
Page 125 of 498

124 Controls in detailSeatsFor more information on seat adjustment,
see the “Getting started” section
(page 40).
Front seat active head restraintYou cannot remove the active head re-
straints on the driver’s and passenger’s
seats.
For removal of the active head restraints
we recommend that you contact an autho-
rized Mercedes-Benz Center.
For information on head restraint adjust-
ment, see “Seats” (
page 39).
For information on active head restraints,
see “Active head restraints” (
page 74).
Rear seat head restraints
Folding head restraints back
The rear seat head restraints can be folded
backward for increased visibility.
1Head restraint release switch
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraints so that it is as close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential 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.
iThe rear seat head restraints cannot be
adjusted.
Page 126 of 498
125 Controls in detailSeats
Switch on the ignition (
page 36).
Press the symbol-side on rocker
switch1 to release the head re-
straints.
The head restraints will fold backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.
Lumbar support
The curvature of the driver's seat can be
adjusted to help enhance lower back sup-
port and seating comfort.
1Adjustment lever
Move adjustment lever1 in the direc-
tion of arrows until you have reached a
comfortable seating position.
Warning!
G
For safety reasons, always drive with the
rear head restraints in the upright position
when the rear seats are occupied.
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
!Make sure the head restraints engage
when placing them upright. Otherwise
their protective function cannot be as-
sured.
Page 127 of 498
126 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 turning the SmartKey
in the starter switch to position2 or press-
ing the KEYLESS-GO* start/stop button
twice.1Seat cushion depth
2Backrest bottom
3Backrest center
4Backrest side bolster adjustment
Switch on the ignition (
page 36).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 æ or
ç.
Move the backrest support to the bot-
tom by using button2 or to the center
by using button3.
Backrest side bolsters
Adjust the side bolsters so that they
provide good lateral support using
switch4.
Page 128 of 498

127 Controls in detailSeats
Drive - Dynamic seat* with multicon-tour features
The Drive - Dynamic seat automatically ad-
justs the lateral support provided by the
backrest to your driving style.
The Drive - Dynamic seat electronically
controls the air pressure in the air cham-
bers of the backrest side bolsters. This
function improves driving comfort and
pleasure.
In addition, the Drive-Dynamic seat has a
movable seat cushion and inflatable air
cushions built into the backrest to provide
additional lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be con-
tinuously varied with switches right side of
the seat on the driver side, or the left side
of the seat on the passenger side after
turning the SmartKey in the starter switch
to position2 or pressing the KEYLESS-GO*
start/stop button twice.1Activate drive dynamic function
2Backrest side bolsters
3Massage function
4Backrest center
5Backrest bottom
6Seat cushion depth
Switch on the ignition (
page 36).Multicontour features
Seat cushion depth
Adjust the seat cushion depth to the
length of your upper leg using
switch6.
Backrest contour
Move the backrest support to the bot-
tom by using button5 or to the center
by using button4.
Adjust the contour of the backrest to
the desired position using æ or
ç.
Backrest side bolsters
Adjust the side bolsters so that they
provide good lateral support using
switch2.
Page 129 of 498

128 Controls in detailSeatsDrive-dynamic features
Activating
Press button1 (
page 127).
The indicator lamp in the button comes
on and the following display appears in
the multi-function display for about
5 seconds.Deactivating
Press button1 (
page 127) again.
The indicator lamp in the button goes
out.
Massage function (PULSE)
The massage function can help prevent
muscle tension during long drives.
Press button3 (
page 127).
The indicator lamp in button3 comes
on. The air cushions in the lumbar area
pulsate.
Seat heating*
Both switches for the front seats are locat-
ed in the center console. The red indicator
lamps in the switch come on to show
which heating level you have selected.
1Front seat heating switch
Switch on the ignition (
page 36).
iYou can adjust the characteristics of
the Drive - Dynamic seat using the con-
trol system (
page 170).
iWhen the engine is turned off, the last
cushion setting is retained in memory.
The cushion is automatically adjusted
to this setting when the engine is re-
started.iThe massage function turns off
automatically after approximately
5 minutes.
Page 130 of 498
129 Controls in detailSeats
Switching seat heating on
Press switch1 repeatedly until the
desired heating level is set.
One or more red indicator lamps on the
switch show the selected heating level.
Switching seat heating off
Press switch1 repeatedly until all
indicator lamps go out.
Level3
Three indicator lamps on
(highest level)The seat heating automatically
switches to level 2 after approxi-
mately 5 minutes.
2
Two indicator lamps onThe seat heating automatically
switches to level 1 after approxi-
mately 10 minutes.
1
One indicator lamp on (lowest
level)The seat heating automatically
switches off after approximately
20 minutes.
off
No indicator lamp on
iIf one or more of the lamps on the seat
heating switch are flashing, there is
insufficient voltage available since too
many electrical consumers are turned
on. The seat heating switches off auto-
matically.
The seat heating will switch back on
again automatically as soon as suffi-
cient voltage is available.