2007 MERCEDES-BENZ C350 4MATIC height

102 Controls in detail
Seats
Head restraint height (rear outer seats)
1Release buttonRaising
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 up.
Lowering
To lower the head restraint, push
release button1 and push down on
the head restraint.Folding head restraints back with
release button
The rear seat head restraints can be folded
backward for increased visibility.
1Release button
Push release button1.
The head restraint will fold backward.
Warning!G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that the head re-
straint 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 ac-
cident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are
intended to help reduce injuries during an
accident.
iAdjust the head restraint in such a way that
it is as close to the head as possible.
iYou can also fold the rear outer seat head
restraints back using the switch in the center
console.

105 Controls in detail
Seats
Lumbar support
The curvature of the front seats can be ad-
justed to help enhance lower back support
and seating comfort.
1Adjustment lever
Move adjustment lever1 in direction
of arrows until you have reached a
comfortable seating position.
Multicontour seats* (Canada only)
This driver’s multicontour seat has a mov-
able seat cushion and inflatable air cush-
ions built into the backrest to provide
additional lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be
continuously varied with switches on the
side of the seat after switching on ignition.
1Seat cushion depth
2Backrest bottom
3Backrest center
4Backrest side bolster adjustmentSwitch on the ignition (page 32).
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.
iIf, after a period of time, the seat no longer
provides the desired contour, then repeat the ad-
justment procedure.

107 Controls in detail
Memory function*
Memory function*
Prior to operating the vehicle, the driver
should check and adjust the seat height,
seat position fore and aft, and seat back-
rest angle if necessary, to ensure adequate
control, reach and comfort. The head re-
straint should also be adjusted for proper
height. See also the section on air bags
(
page 59) for proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, operation
and comfort. Both the interior and exterior
rear view mirrors should be adjusted for
adequate rear vision.
Fasten seat belts. Infants and small chil-
dren should be seated in a properly se-
cured 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.With the memory function you can store up
to three different settings.
The following settings are stored for the
driver’s seat when using the buttons on the
driver’s door:

Driver’s seat, backrest and head
restraint position

Steering wheel position

Exterior rear view mirrorsThe following settings are stored for the
front passenger seat when using the but-
tons (if so equipped depending on vehicle
equipment configuration) on the passen-
ger door:

Front passenger seat, backrest and
head restraint position
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.

239 Controls in detail
Useful features
Parcel net in front passenger footwell
(all models, except C 280 4MATIC and
C 350 4MATIC)
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.Cup holders
Cup holders in front of seat armrest
Underneath the swiveling cup holder is
another stationary cup holder. You can
only use this when the swiveling cup holder
is pulled out and completely turned
outward.
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.
Warning!G
In order to help prevent spilling liquids on
vehicle occupants and/or vehicle equip-
ment, only use containers that fit into the
cup holder. Use lids on open containers and
do not fill containers to a height where the
contents, especially hot liquids, could spill
during braking, vehicle maneuvers, or an ac-
cident. Liquids spilled on vehicle occupants
may cause serious personal injury. Liquids
spilled on vehicle equipment may cause
damage not covered by the Mercedes-Benz
Limited Warranty.
When not in use, keep the cup holder
closed. An open cup holder may cause injury
to you or others when contacted during
braking, vehicle maneuvers, or in an acci-
dent.
Keep in mind that objects placed in the cup
holder may come loose during braking, vehi-
cle maneuvers, or in an accident and be
thrown around in the vehicle interior.
Objects thrown around in the vehicle interi-
or may cause an accident and/or serious
personal injury.

275 Operation
Engine compartment
The hood lock release lever is located to
the left of the steering wheel under the
dashboard.
1Hood lock release lever
Pull lever1 downwards.
The hood is unlocked and handle2
will extend out of the radiator grille. 2Handle for opening the hood
Pull handle2 to its stop out of
radiator grille.
Pull up on the hood (do not pull up on
the handle) and then release it.
The hood will be automatically held
open at shoulder height by gas-filled
struts. Closing
Let the hood drop from a height of
approximately 1 ft (30 cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
!To avoid damage to the windshield wipers or
hood, never open the hood if the wiper arms are
folded forward away from the windshield.
Warning!G
When closing the hood, use extreme caution
not to catch hands or fingers.
Be careful that you do not close the hood on
anyone.
Make sure that the hood is securely en-
gaged before driving off. Do not continue
driving if the hood can no longer engage af-
ter an accident, for example. The hood could
otherwise come loose while the vehicle is in
motion and injure you and/or others.

296 Operation
Tires and wheels
General:
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter preceding the tire
size designation.
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only. Tire width
The tire width1 (
page 295) indicates
the nominal tire width in mm.
Aspect ratio
The aspect ratio2 (
page 295) is the
dimensional relationship between tire
section height and section width and is
expressed in percentage. The aspect ratio
is arrived at by dividing section height by
section width.
Tire code
The tire code3 (
page 295) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means diag-
onal or bias ply construction; letter “B”
means belted-bias ply construction.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240 km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18).
For additional information, see “Tire speed
rating” (
page 297).Rim diameter
The rim diameter4 (
page 295) is the
diameter of the bead seat, not the
diameter of the rim edge. Rim diameter is
indicated in inches (in).
Tire load rating
The tire load rating5 (
page 295) is a
numerical code associated with the
maximum load a tire can support.
For example, a load rating of 91 corre-
sponds to a maximum load of 1 356 lbs
(615 kg) the tire is designed to support.
See also “Maximum tire load”
(
page 301) where the maximum load as-
sociated with the load index is indicated in
kilograms and lbs.

304 Operation
Tires and wheels
Tire ply material
1Plies in sidewall
2Plies under tread
This marking tells you about the type of
cord and number of plies in the sidewall
and under the tread.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 three hours or
driven no more than one 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.
iFor illustration purposes only. Actual data
on tires is specific to each vehicle and may vary
from data shown in above illustration.

362 Practical hints
Unlocking/locking in an emergency
Unlocking and opening the trunk
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking in an emergency
2HandleInsert the mechanical key into the
trunk lid lock until it stops.
Turn the mechanical key
counterclockwise to position1.
The trunk lid unlocks.
Pull on handle2.
The trunk opens.
Turn the mechanical key back and
remove it from the trunk lid lock.
Locking the vehicle
If you can not lock the vehicle with the
SmartKey, do the following:
Close the passenger door, the rear
doors and the trunk.
Press the central locking switch in the
center console (
page 100).
Check to see whether the locking
knobs on the doors have moved down.
If necessary push them down manually.
Remove the mechanical key out of the
SmartKey (
page 361).
Check whether the trunk is locked.
If necessary, lock the trunk with the
mechanical key (
page 99).
Close the driver’s door.
Except for the driver’s door, the vehicle
should now be locked.
!The trunk lid swings open upwards
automatically. Always make sure there is suffi-
cient overhead clearance.