Page 119 of 456
118 Controls in detailSeatsLumbar region support
Press k or j on rocker
switch4.
This selects the air cushion you wish to
adjust.
Press æ or ç on rocker
switch4.
The air cushion inflates or deflates.Side bolsters adjustment
Adjust the side bolsters so that they
provide good lateral support using
switch 2.Massage function (PULSE)
You can reduce muscle tension during long
trips by periodically using the massage
function.
Press button3.
The indicator lamp on button3 comes
on. The air cushions in the lumbar re-
gion inflate and deflate rhythmically.
iWhen the engine is turned off, the last
cushion setting is retained in memory,
and the cushion is automatically ad-
justed to this setting when the engine
is restarted.
iThe massage function switches off au-
tomatically after approximately
8 minutes. The indicator lamp extin-
guishes.
Page 120 of 456

119 Controls in detailSeats
Seat heating
Vehicles without seat ventilation*
The switch is located on the door.
1Normal heating
2Rapid heating
The red indicator lamps above the switch-
es show the heating level selected:
Switch on the ignition (
page 34).
Switching on seat heating
Press switch1.
A red indicator lamp above the switch
comes on.
Switching off seat heating
Press switch1 again.
The indicator lamp above the switch
goes out.
Switching on rapid seat heating
Press switch2.
Both red indicator lamps above the
switch come on. Switching off rapid seat heating
Press switch2 again.
Both indicator lamps above the switch
go out.
Leveloff
No indicator lamp on.
1
One left indicator lamp on.
2
Two right indicator lamps on.
iThe seat heating will be automatically
switched off after approximately
30 minutes.
iThe system switches over to normal
heating mode after approximately
5 minutes. Only the right-hand indica-
tor lamp remains lit. iIf one or both of the lamps on the seat
heating switch are flashing, there is in-
sufficient 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.
Page 121 of 456

120 Controls in detailSeatsVehicles with seat ventilation*
The switch is located on the door.
1Seat heating switch
The red indicator lamps above the switch
show the heating level selected:
Switch on the ignition (
page 34).
Switching on seat heating
Press switch1 twice.
A red indicator lamp above the switch
comes on.
Switching off seat heating
Press switch1 again.
The indicator lamp above the switch
goes out.
Switching on rapid seat heating
Press switch1 once.
Both indicator lamps above the switch
come on. Switching off rapid seat heating
Press switch1 twice.
Both indicator lamps above the switch
go out.
Leveloff
No indicator lamp on.
1
One indicator lamp on.
2
Two indicator lamps on.
iThe seat heating will be automatically
switched off after approximately
30 minutes.
iThe system switches over to normal
heating mode after approximately
5 minutes. Only the right-hand indica-
tor lamp remains lit. iIf one or both of the lamps on the seat
heating switch are flashing, there is in-
sufficient 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.
Page 122 of 456

121 Controls in detailSeats
Seat ventilation*
The switch is located on the door. Seat
ventilation can be activated manually with
the SmartKey in starter switch position 1
or 2. The driver’s seat ventilation can be
activated automatically by the summer
opening feature (
page 200).
The blue indicator lamps on the switch
show the ventilation level selected:
1Seat ventilation switch
Switch on the ignition (
page 34).
Switching on seat ventilation
Press switch1.
Three blue indicator lamps above the
switch come on.
Continue pressing switch1 until the
desired seat ventilation level is
reached.Switching off seat ventilation
Press switch1 repeatedly until all in-
dicator lamps go out.
Level3
Three indicator lamps on
(highest level)
2
Two indicator lamps on
1
One indicator lamp on
(lowest level)
off
No indicator lamp on
iThe seat ventilation for the driver’s seat
is automatically set to the highest level
if activated via summer opening fea-
ture (
page 200).
iIf one or all of the lamps on the seat
ventilation switch are flashing, there is
insufficient voltage due to too many
electrical consumers being switched
on. The seat ventilation switches off au-
tomatically.
The seat ventilation will switch back on
again automatically as soon as suffi-
cient voltage is available.
Page 124 of 456
123 Controls in detail
Memory function
The memory button and stored position
switch are located on the door.
1Stored position button
MMemory button M
Switch on the ignition (
page 34).
or
Open the respective door.
Storing positions into memory
Adjust the seats, steering wheel and
exterior mirrors to the desired position
(page 37).
Press memory button M.
Release memory button M and push
one of the position buttons1 within
3 seconds.
All the settings are stored with the se-
lected position.
Recalling positions from memory
Press and hold one of the position
buttons1 until the seat, steering
wheel and exterior mirrors have fully
moved to the stored positions.!Do not operate the power seats using
the memory button if the seat backrest
is in an extremely reclined position. Do-
ing so could cause damage to front or
rear seats.
First move seat backrest to an upright
position.iReleasing the button immediately
stops movement to the stored posi-
tions.
Page 234 of 456
233 Controls in detail
Useful features
Opening storage compartment
Press button1 and lift the armrest lid.Opening storage tray and telephone
holder*
The tray contains a coin holder and a tele-
phone* holder.
Press button2 and lift the armrest.Storage compartment between rear
seats
1Cover
Opening
Slide cover1 rearward.
Closing
Slide cover1 forward.
iThe storage compartment can be heat-
ed or cooled.
The compartment can get very warm
due to its confined space. When storing
heat-sensitive objects in the compart-
ment, close the air vent (
page 195)
while heating the passenger compart-
ment.
!Do not obstruct the air vent in the stor-
age compartment.
!Do not let bank cards, credit cards or
other cards with a magnetic strip come
near the storage tray as a magnet built
into the tray could erase or change the
information on the card.
Page 235 of 456

234 Controls in detailUseful featuresStorage compartments under the front
seats
1Lid
2Buttons
Opening
Press buttons2 together and fold
lid1 down.
Closing
Close lid1 until both buttons2 of
lock engage.Parcel net in front passenger footwell
A small convenience parcel net is located
in the front passenger footwell. It is for
small and light items, such as road maps,
mail, etc.Parcel net in trunk
You can hang a parcel net in the trunk. The
hooks and the parcel net in the trunk can
hold a load of up to 29.8 lbs (13.5 kg).
1Hook
Hang the parcel net on hooks1 on the
left and right sides of the trunk.
Warning!
G
The parcel net is intended for storing
light-weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
parcel net. In an accident, during hard brak-
ing, or sudden maneuvers, they could be
thrown around inside the vehicle and cause
injury to vehicle occupants
The parcel net cannot protect transported
goods in the event of an accident.
!The parcel net cannot protect or suffi-
ciently secure goods in the event of an
accident.
Page 310 of 456

309 Operation
Tires and wheels
Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (D
epartment o
f T
ransportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross A
xle W
eight R
ating)
The GAWR is the maximum permissible
axle weight. The gross vehicle weight on
each axle must never exceed the GAWR for
the front and rear axle indicated on the
Certification label located on the driver’s
door B-pillar.
GVW (G
ross V
ehicle W
eight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GWV must never exceed the
GWVR indicated on the Certification label
located on the driver’s door B-pillar.