suspension MERCEDES-BENZ R-Class 2011 W251 Owner's Manual

Observe the notes on driving with a trailer
( Y page 193).
AIRMATIC package
General notes
AIRMATIC enables a suspension tuning
setting to be selected and regulates the
damping behavior and level of your vehicle.
The system comprises two components: ADS
(Adaptive Damping System) ( Y page 183)
and level control ( Y page 183) .
Observe the notes on driving with a trailer
( Y page 193).
ADS (Adaptive Damping System)
ADS is continuously electronically controlled.
It adapts the damping characteristics to the
operating and driving situation. Damping is
controlled separately for each wheel. This
increases driving safety and tire comfort.
This depends on:
R your driving style
R the road surface conditions
R the ADS setting
R the vehicle level setting
Your selection remains stored even if you
remove the key from the ignition lock.
You can choose between the following ADS
settings:
R AUTO for normal driving situations;
indicator lamps ; and = are off.
R SPORT for sporty driving; indicator
lamp ; is on.
R COMF for a more comfortable ride;
indicator lamp = is on.XStart the engine.XPress button : repeatedly until the
desired setting is selected.
Level control
Level control automatically adapts the vehicle
level to the current operating and driving
situation. This results in reduced fuel
consumption and improved handling.
Make changes to the vehicle level while the
vehicle is in motion. This enables the vehicle
to adjust to the new level as quickly as
possible.
The vehicle level may change visibly if you
park the vehicle and the outside temperature
changes. If the temperature drops, the
vehicle level is lower; with an increase in
temperature, the vehicle level rises.
When you unlock the vehicle or open a door,
the vehicle begins to balance the load
discrepancies while still parked. However, for
significant level changes, e.g. after the
vehicle has been stationary for a long period,
the engine must be on. For safety reasons,
the vehicle is only lowered when the doors are
closed. Lowering is interrupted if a door is
opened and continues once the door has
been closed.
GWarning!
Make sure no one is near the wheel housing
or under the vehicle when you lower the
vehicle while it is standing still. Limbs could
become wedged into or under the vehicle.
For safety reasons, the vehicle can only be
lowered with all doors and the tailgate closed.
Lowering is interrupted if a door or the tailgate
Driving systems183Driving and parkingBA 251 USA, CA Edition A 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.52010-04-16T14:31:55+02:00 - Seite 183Z

Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Important safety guidelines
Contact an authorized Mercedes-Benz Center
if you require information on tested and
recommended tires and wheels for summer
and winter driving. Advice on purchasing and
caring for tires is also available there.
GWarning
Replace rims or tires with the same
designation, manufacturer and type as shown
on the original part. For further information
contact an authorized Mercedes-Benz Center.
If incorrectly sized rims and tires are
mounted, the wheel brakes or suspension
components can be damaged. Also, the
operating clearance of the wheels and the
tires may no longer be correct.
GWarning
Worn, old tires can cause accidents. If the tire
tread is worn to minimum tread depth, or if
the tires have sustained damage, replace
them.
When replacing rims, only use genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can result
in the bolts loosening and possibly an
accident.
Retreaded tires are not tested or
recommended by Mercedes-Benz, since
previous damage cannot always be
recognized on retreads. The operating safety
of the vehicle cannot be assured when such
tires are used.
GWarning
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possible
damage to your vehicle has occurred, you
should turn on the hazard warning flashers,
carefully slow down, and drive with caution to
an area which is a safe distance from the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle appears
unsafe, have the vehicle towed to the nearest
authorized Mercedes-Benz Center or tire
dealer for repairs.
GWarning
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
might lose control of the vehicle. Continued
driving with a flat tire or driving at high speed
with a flat tire will cause excessive heat build-
up and possibly a fire.
! For safety reasons, Mercedes-Benz
recommends that you only use tires,
wheels and accessories which have been
approved by Mercedes-Benz specifically
for your vehicle. These tires have been
specially adapted for use with the control
systems, such as ABS or ESP ®
, and are
marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(tires with run-flat characteristics)
R MO1 = Mercedes-Benz Original (AMG)
Only use Mercedes-Benz Original Extended
tires on wheels that have been specifically
approved by Mercedes-Benz.
If you use other tires, wheels and
accessories, Mercedes-Benz cannot
accept any responsibility for damage that
may result from this. Further information
about tires, wheels and approved
combinations can be obtained from any
authorized Mercedes-Benz Center.
i Further information about tires and
wheels can be obtained from any
authorized Mercedes-Benz Center.
320Important safety guidelinesTires and wheels
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Anticorrosion/antifreeze
Your vehicle has a number of aluminum components. The use of aluminum components in
motor vehicle engines necessitates that anticorrosion/antifreeze coolant used in such
engines be specifically formulated to protect the aluminum parts. Failure to use such
anticorrosion/antifreeze coolant will result in a significantly shortened service life.
For this reason, the following product is expressly recommended for use in your vehicle:
MB 325.0 Anticorrosion/Antifreeze.
The coolant concentration should be checked before the onset of winter or once a year in
warmer regions.
The coolant is checked at every service at an authorized Mercedes-Benz Center.
ModelAntifreeze protection to approximately-35 ‡ (-37 †)-49 ‡ (-45 †)Cooling systemAll models5.0 US qt (4.75 l)5.5 US qt (5.2 l)Windshield and headlamp cleaning
system GWarning
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
XUse MB Windshield Washer Concentrate
MB SummerFit.XAt temperatures above freezing: add 1
part MB SummerFit to 100 parts water, e.g.
1.34 fl oz (40 ml) MB SummerFit to 1 gal
(4.0 l) of water.XAt temperatures below freezing: add 1
part MB SummerFit to 100 parts washer
fluid, e.g. 1.34 fl oz (40 ml) MB SummerFit
to 1 gal (4.0 l) of water.Vehicle data
Vehicle data, R 350 BlueTEC
(251.125)
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
Vehicle dimensions, R 350 BlueTECVehicle length203.3 in (5163 mm)Vehicle width
including exterior
mirrors85.9 in (2182 mm)Vehicle height65.6 in (1666 mm) 52Wheelbase126.6 in (3215 mm)Front track64.5 in (1638 mm)Rear track64.4 in (1636 mm)Ground clearance5.9 in (150 mm)52Turning circle41.3 ft (12.6 m)52
The values apply to an unladen vehicle with standard equipment. On vehicles with the AIRMATIC package,
the values vary depending on the level set for the vehicle suspension.Vehicle data357Technical dataBA 251 USA, CA Edition A 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.52010-04-16T14:31:55+02:00 - Seite 357Z

Vehicle weight, R 350 BlueTECMaximum roof
loadMaximum 220 lb
(100 kg)
Vehicle data, R 350 (251.165)
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
Vehicle dimensions, R 350Vehicle length203.3 in (5163 mm)Vehicle width
including exterior
mirrors85.9 in (2182 mm)Vehicle height65.5 in (1663 mm) 53Wheelbase126.6 in (3215 mm)Front track64.5 in (1638 mm)Rear track64.4 in (1636 mm)Ground clearance6.0 in (152 mm)53Turning circle41.3 ft (12.6 m)Vehicle weight, R 350Maximum roof
loadMaximum 220 lb
(100 kg)53 The values apply to an unladen vehicle with standard equipment. On vehicles with the AIRMATIC package,
the values vary depending on the level set for the vehicle suspension.358Vehicle dataTechnical data
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