Make sure that you do not operate the ADS
switch or the vehicle level control system
when coupling/decoupling the trailer.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian
provinces require by law:
R safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer
coupling, not to the bumper or the axle.
Allow for enough play in the chains to
facilitate turning tight corners.
R a separate brake system for certain types
of trailer.
R a safety switch for braked trailers. Check
the specific legal requirements applicable
to your federal state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes.
! Do not connect the trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a loss of function of
the brake systems of both the vehicle and
the trailer.
i The vehicle's wiring harness features a
line to the brake indicator lamp.XMake sure that the automatic transmission
is set to position P.XApply the vehicle's parking brake.XStart the engine.XVehicles with the AIRMATIC package:
select highway level and set ADS to
AUTO or COMF .XSwitch off the engine.XClose all doors and the tailgate.XCouple up the trailer.XEstablish all electrical connections.i
Vehicles with the AIRMATIC package:
with a trailer attached, the vehicle will
always remain at highway level. When
coupling up a trailer, please observe the
following:
R if highway level has not been set
manually, the vehicle will automatically
sink to highway level as soon as it
reaches a speed of 5 mph (8 km/h).
R high-speed level is not available.
These restrictions apply to all accessories
powered through a connection to the trailer
power socket of your vehicle, e.g. a bicycle
carrier.
Towing a trailer
There are numerous legal requirements
concerning the towing of a trailer, e.g. speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
R To acquaint yourself with driving with a
trailer and with the resulting changes to
handling, you should practice cornering,
stopping and reversing in a traffic-free
location.
R Before driving, check:
- the trailer coupling
- the safety switch for braked trailers
- the safety chains
- the electrical connections
- the lights
- the wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer features electronically
controlled brakes, pull away the vehicle/
194Towing a trailerDriving and parking
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performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
Interchanging the wheels
GWarning
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs. rear),
tire rotation is not possible.
GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
Only use genuine Mercedes-Benz wheel bolts
specified for your vehicle’s rims.
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If no
warranty book is available, the tires should be
rotated every 3000 to 6000 miles
(5000 to 10000 km), or earlier if tire wear
requires. Do not change the direction of
wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressures.
Information on changing a wheel and
mounting the spare wheel ( Y page 301).
Tire labeling
Overview of tire labeling
The following markings are on the tire in
addition to the tire name (sales designation)
and the manufacturer's name:
:Uniform Tire Quality Grading Standard
( Y page 340);DOT, Tire Identification Number
( Y page 339)=Maximum tire load ( Y page 334)?Maximum tire pressure ( Y page 330)AManufacturerBTire material ( Y page 340)CTire size designation, load-bearing
capacity and speed index ( Y page 337)DLoad index ( Y page 339)ETire name
i
Tire data is vehicle-specific and may
deviate from the data in the example.
336Tire labelingTires and wheels
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Tires of the same dimensions
i BA: Both axlesR 350R18BAAlloy wheels
Offset8 J x 18 H2
2.64 in (67 mm)Winter tires 44255/50 R18 105 H M+S
iR 350
R 350 BlueTEC 45R19BAAlloy wheels
Offset8 J x 19 H2
2.64 in (67 mm)All-weather tires255/50 R19 107 H XL M+SWinter tires 44255/50 R19 107 H XL M+S
iR 350
R 350 BlueTEC 46R19BAAlloy wheels
Offset8 J x 19 H2
2.64 in (67 mm)All-weather tires 47255/50 R19 107 H XL M+S MOExtendedWinter tires44, 47255/50 R19 107 H XL M+S
i MOExtendedR 350R19BAAMG alloy wheels
Offset8.5 J x 19 H2
2.52 in (64 mm)All-weather tires255/50 R19 107 H XL M+SWinter tires 44255/50 R19 107 H XL M+S
i44
Not available as standard equipment or optional equipment at the factory.
45 Canada only.
46 USA only.
47 Tires with run-flat characteristics must only be used in conjunction with an activated tire pressure loss
warning system or TPMS.Wheel/tire combinations345Tires and wheelsBA 251 USA, CA Edition A 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.52010-04-16T14:31:55+02:00 - Seite 345Z
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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