Page 245 of 491

244 Controls in detailDriving systemsAirmatic DC (Dual Control)*
Airmatic automatically selects the opti-
mum suspension tuning and ride height for
your vehicle. The Airmatic consists of two
components:
Adaptive Damping System (ADS)
Vehicle level control
The ADS automatically selects the opti-
mum damping for the respective driving
conditions. At the same time the suspen-
sion is set to either sporty or comfort.Suspension tuning
The suspension tuning is set according to:
Your driving style
Road surface conditions
Your choice of suspension style,
“sporty I”, “sporty II” or “comfortable”,
which you select using the damping
button.
The following suspension styles are
available:
Comfortable
Both indicator lamps2 are off.
Sporty I
One indicator lamp2 is on.
Sporty II
Both indicator lamps2 are on.1Damping button
2Indicator lamps
Start the engine.
Press the damping button1 until the
desired suspension style is set.iThe selected suspension style is stored
in memory, even after the SmartKey is
removed from the starter switch.iIn the sporty suspension style the vehi-
cle is lowered up to 0.6 in (15 mm).
Page 246 of 491

245 Controls in detail
Driving systems
Vehicle level control
Your vehicle automatically adjusts its ride
height to
reduce fuel consumption
increase vehicle safety
The following vehicle chassis ride heights
can be selected:
Normal
RaisedThe vehicle chassis ride height is raised or
lowered according to the selected level
setting and to the vehicle speed:
At a speed approximately above
68 mph (110 km / h) and the sporty
suspension style selected
(page 244), ride height is reduced
automatically by up to approximately
0.6in (15mm).
With decreasing speed, the ride height
is again raised to the “Normal” level.Select the “Raised” level only when re-
quired by current driving conditions. Oth-
erwise
fuel consumption may increase
handling may be impaired
iThese height adjustments are so small
that you may not notice any change.
Warning!
G
To help avoid personal injury, keep hands
and feet away from wheel housing area, and
stay away from under the vehicle when low-
ering the vehicle chassis.
Page 247 of 491

246 Controls in detailDriving systemsThe following vehicle level settings can be
selected when the vehicle is stationary and
the engine is running:
The button is located in the lower section
of the center console.
1Vehicle level control button
2Indicator lamp
Briefly press button1 to change from
“Normal” level to “Raised” level. When
vehicle is at “Raised” level, pressing
the switch will return the vehicle to
“Normal” level.
Vehicle level when
stationary
Use for
Ride height increase
over normal
Automatic lowering
Indicator lamp (
page 246)
Normal
Normal operation
None
Max. approx. 0.6 in (15 mm)
Lamp off
Raised
Driving with snow
chains or very
rough road sur-
face conditions
Approx. 0.8 in (20 mm)
Max. approx. 1.4 in (35 mm)
Lamp on
iAt a speed of approximately above
75 mph (120 km / h) or if the speed
amounts to between 50 mph
(80 km / h) and 75 mph (120 km / h)
for approximately five minutes, the set-
ting “Raised” is canceled. The message Leveling cancelled
appears in the
multifunction display.
If you do not drive in this speed range,
the “Raised” level remains stored even
if the SmartKey is removed from the
starter switch.
Page 263 of 491

262 Controls in detailUseful featuresCup holders
Depending on production date, your vehi-
cle is equipped with cup holders in either
the center console (
page 262) or in the
center armrest (
page 263).
Cup holder in the center console
Briefly press the marking in the back of
the cover.
The cover opens.
Briefly press marking on the cup hold-
er.
The cup holder extends automatically.
Warning!
G
In order to help prevent spilling liquids on
vehicle occupants, only use containers that
fit into the cup holder. Use lids on open con-
tainers and do not fill containers to a height
where the contents, especially hot liquids,
could spill during braking, vehicle maneu-
vers, or in an accident.
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. Ob-
jects thrown around in the vehicle interior
may cause an accident and/or serious per-
sonal injury.
iThe cup holder can be removed for
cleaning. Clean the cup holder only
with clear, lukewarm water. Make sure
to insert the cup holder in the guides
when reinstalling it.
Page 300 of 491

299 Operation
Engine compartment
Engine compartment
Hood
Opening
1Hood release
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 radia-
tor 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.
Warning!
G
Do not pull the release lever while the vehi-
cle is in motion. Otherwise the hood could
be forced open by passing air flow.
!To avoid damage to the windshield wip-
ers or hood, never open the hood if the
wiper arms are folded forward away
from the windshield.
Warning!
G
To help prevent personal injury, stay clear of
moving parts when the hood is open and the
engine is running. Make sure the hood is
properly closed before driving. When closing
the hood, use extreme caution not to catch
hands or fingers.
The radiator fan may continue to run for ap-
proximately 30 seconds or even restart af-
ter the engine has been turned off. Stay
clear of fan blades.
Page 301 of 491

300 OperationEngine compartment
Closing
Let the hood drop from a height of ap-
proximately 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.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when
the vehicle is new
the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature gauge indicates that the engine is
overheated, do not open the hood. Move
away from vehicle and do not open the hood
until the engine has cooled. If necessary,
call the fire department.Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components (ig-
nition coils, spark plug sockets, diagnostic
socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz
Center.
Page 325 of 491

324 OperationTires and wheelsGeneral:
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 323) indicates
the nominal tire width in mm.
Aspect ratio
The aspect ratio2 (page 323) 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 323) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means
diagonal 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 325).Rim diameter
The rim diameter4 (
page 323) 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 323) 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 329) where the maximum load as-
sociated with the load index is indicated in
kilograms and lbs.
Page 333 of 491

332 OperationTires 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
bar.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.
Warning!
G
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underin-
flation, or excessive loading, either sepa-
rately or in combination, can cause
excessive heat build-up and possible tire
failure.
iFor illustration purposes only. Actual
data on tires are specific to each vehi-
cle and may vary from data shown in
above illustration.