tion, as that could result in serious injuries
in the event of an accident.
R All occupants should wear their seat belt at
all times, because seat belts help reduce
the likelihood of and potential severity of
injuries in accidents, even if the vehicle
rolls over. The integrated restraint system
is equipped with SRS (driver's air bag, front-
passenger air bag, thorax side impact air
bags, window curtain air bags for side win-
dows), Emergency Tensioning Devices and
seat belt force limiters.
The system is designed to enhance the pro-
tection offered to occupants who are prop-
erly secured during certain frontal impacts
(front air bags and Emergency Tensioning
Devices) and side impacts (thorax side
impact air bags, window curtain air bags
and Emergency Tensioning Device) that
exceed preset deployment thresholds, as
well as in certain situations where the vehi-
cle rolls over (window curtain air bags and
Emergency Tensioning Device).
R Never route the shoulder section of the
seat belt under your arm, across your neck
or anywhere other than across your
shoulder. In the event of a frontal impact,
your body would be moved too far forward.
This would increase the risk of head and
neck injuries. The seat belt would then
apply excessive force to the ribs or abdo-
men, which could cause severe internal
injuries to organs such as the liver or
spleen.
Adjust the seat belt so that the upper part
of the belt is as close as possible to the
center of the shoulder. It should not touch
the neck. Never route the belt under the
shoulder. The height of the belt outlet can
be altered to ensure correct usage.
R The lap belt should be routed as low as pos-
sible across the hips, not across the abdo-
men. If the lap belt is routed across the
abdomen, it could cause serious injuries in
the event of an impact. R
Never route the seat belt over rigid or frag-
ile objects in or on your clothing, such as
eyeglasses, pens, keys etc., as this could
cause injuries.
R Always ensure that the seat belt is routed
correctly. This is particularly important if
you are wearing loose clothing.
R Never use a seat belt for more than one
person at a time. Never route a seat belt
around more than one person or additional
objects.
R Never wear seat belts if they are twisted.
Otherwise, in the event of an impact, the
full width of the seat belt is unavailable to
distribute the force of the impact. The
twisted seat belt routed across your body
could cause injuries.
R Pregnant women should also always use a
three-point seat belt. The lap belt must
always pass across your lap as low down as
possible, i.e. across your hips; not across
your abdomen.
R The backrest should be set as close to ver-
tical as possible.
R Check the seat belt during the journey in
order to make sure that it is correctly posi-
tioned.
R Never place your feet on the instrument
panel or on the seat. Always keep both feet
on the floor in front of the seat.
R When using a seat belt to secure an infant
restraint system, child restraint system or
a child on a booster seat, always follow the
child restraint system manufacturer's
instructions.
Fastening/unfastening the seat belts G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and prop- 48
Occupant safetySafety
installed and secured correctly before every
journey.
If your vehicle is equipped with a Sprinter
trailer tow hitch, you need a ball coupling that
is approved for the trailer tow hitch.
When mounting and removing the approved
ball coupling, observe the relevant informa-
tion in the operating instructions of the ball
coupling manufacturer.
If you cannot mount the ball coupling cor-
rectly, remove it. In this case, the ball cou-
pling may not be used for towing a trailer.
Notes on the permissible dimensions and
weights can also be found on the identifica-
tion plate of the trailer tow hitch. You can
obtain advice from a qualified specialist work-
shop. Coupling up a trailer
! Do not connect the trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is equip-
ped 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. Trailer coupled ready for use
X
Make sure the selector lever of the auto-
matic transmission is in position P.
X Apply the parking brake of the vehicle.
X Close all doors. X
Position the trailer horizontally behind your
vehicle.
i The height of the ball neck changes
according to the load on the vehicle. In this
case, use a trailer with a height-adjustable
trailer drawbar.
X Couple the trailer.
X Establish all electrical and other connec-
tions to the trailer.
X Remove the objects that are preventing the
trailer from rolling, e.g. wheel chocks.
X Release the trailer parking brake.
i The subharness of the vehicle has a cable
connection to the brake lamp indicator
lamp.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian provin-
ces 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 cou-
pling, not to the bumper or the axle.
Leave enough slack in the chains. This
allows you to drive round tight corners.
R a separate brake system for certain types
of trailer.
R a safety switch for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer detaches from the towing vehi-
cle, the safety switch applies the trailer's
brakes. Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Make sure your vehicle/trailer
combination complies with local laws. This
not only means where you live, but also any-
where you are driving to. Information is avail-
able from the police and local authorities. 176
Towing a trailerDriving and parking
When parking your vehicle, make sure that
the tires do not get deformed by the curb or
other obstacles. If it is necessary to drive over
curbs, speed humps or similar elevations, try
to do so slowly and not at a sharp angle. Oth-
erwise, the tires, particularly the sidewalls,
can get damaged. Regular wheel and tire checks
G
WARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control
of your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
Check the wheels and tires of your vehicle for
damage regularly, i.e. at least every two
weeks, as well as after driving off-road or on
rough roads. Damaged wheels can cause a
loss of tire pressure. Pay particular attention
to damage such as:
R cuts in the tires
R punctures
R tears in the tires
R bulges on tires
R deformation or severe corrosion on wheels
Regularly check the tire tread depth and the
condition of the tread across the whole width
of the tire (Y page 287). If necessary, turn
the front wheels to full lock in order to inspect
the inner side of the tire surface.
All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not
install anything onto the valve other than the
standard valve cap or other valve caps
approved for your vehicle by dealers listed on
the inside of the front cover. Do not install any
other valve caps or systems, e.g. tire pressure
monitor systems.
Regularly check the pressure of all the tires,
particularly prior to long trips. Adjust the tire
pressure if necessary (Y page 290).The service life of tires depends on various
factors, including the following:
R
driving style
R tire pressure
R mileage Tire tread
G
WARNING
Insufficient tire tread will reduce tire traction.
The tire is no longer able to dissipate water.
This means that on wet road surfaces, the risk
of hydroplaning increases, in particular where
speed is not adapted to suit the driving con-
ditions. There is a risk of accident.
If the tire pressure is too high or too low, tires
may exhibit different levels of wear at differ-
ent locations on the tire tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
width of all tires.
Minimum tire tread depth for:
R Summer tires: 00CEin (3 mm)
R M+S tires: 00CFin (4 mm)
For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached. Bar marking
0043for tread wear is integrated
into the tire tread.
Tread wear indicators (TWIs) are required by
law. Six indicators are positioned over the tire
tread. They are visible once the tread depth
is approximately 00CDin (1.6 mm). If this is the Operation
287Wheels and tires Z
0087
Maximum tire pressure (Y page 292)
0085 Manufacturer
0083 Tire material (Y page 304)
0084 Tire size designation, load-bearing capa-
city and speed index (Y page 302)
006B Tire name
The markings described above are on the tire
in addition to the tire name (sales designa-
tion) and the manufacturer's name.
i Tire data is vehicle-specific and may devi-
ate from the data in the example.
Tire size designation, load bearing index
and speed index G
WARNING
Exceeding the stated tire load-bearing capa-
city and the approved maximum speed could
lead to tire damage or the tire bursting. There
is a risk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle. 0043
Design standard
0044 Tire width
0087 Nominal aspect ratio in %
0085 Tire code
0083 Rim diameter
0084 Load bearing index
006B Speed index General:
depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter 0043that precedes the size descrip-
tion
If "LT" precedes the size description (as
shown above): these are light truck tires
according to U.S. manufacturing standards.
If "C" precedes the size description: these are
commercial motor vehicle tires according to
European manufacturing standards.
Tire width: tire width0044shows the nominal
tire width in millimeters.
Aspect ratio: aspect ratio0087is the size ratio
between the tire height and tire width and is
shown in percent. The aspect ratio is calcu-
lated by dividing the tire width by the tire
height.
Tire code: tire code0085specifies the tire type.
"R" represents radial tires. "D" represents
diagonal tires, "B" represents diagonal radial
tires.
Rim diameter: rim diameter0083is the diam-
eter of the bead seat, not the diameter of the
rim flange. The rim diameter is specified in
inches (in).
Load-bearing index: load-bearing index0084
is a numerical code that specifies the maxi-
mum load-bearing capacity of a tire.
Do not overload the tires by exceeding the
specified load limit. The maximum permissi-
ble load can be found on the vehicle's Tire and
Loading Information placard on the B-pillar on
the driver's side (Y page 298).
Example:
The load-bearing index 120 indicates a max-
imum load of 3,042 lb (1,380 kg) for the tire.
If two load-bearing capacity indices are speci-
fied (as shown above), the first number states
the load-bearing capacity for single tires, the
second number the load-bearing capacity for
twin tires. For further information on the max-
imum tire load in kilograms and pounds, see
(Y page 303). 302
What you should know about wheels and tiresWheels and tires
is bar. 100 kilopascals (kPa) are the equiva-
lent of 1 bar.
Load index
In addition to the load bearing index, a load
index can be stamped onto the sidewall of the
tire. It specifies the load-bearing capacity of
the tire more precisely.
Curb weight
The weight of a vehicle with standard equip-
ment including the maximum filling capacity
of fuel, oil, and coolant. It also includes the
air-conditioning system and optional equip-
ment if these are installed on the vehicle, but
does not include passengers or luggage.
Maximum tire load
The maximum tire load in kilograms or
pounds is the maximum weight for which a
tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire.
Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (Pounds per square inch)
Standard unit of measurement for tire pres-
sure.
Aspect ratio
Relationship between tire height and width in
percent.
Tire pressure
Pressure inside the tire applying an outward
force to every square inch of the tire's sur-
face. Tire pressure is specified in pounds per
square inch (psi), in kilopascal (kPa) or in bar.
Tire pressure should only be corrected when
the tires are cold. Cold tire pressure
The tires are cold:
R
if the vehicle has been parked for at least
three hours without direct sunlight on the
tires, and
R if the vehicle has not been driven further
than 1 mile (1.6 km)
Tire tread
The part of the tire that comes into contact
with the road.
Tire bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
tire bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kg (5 lbs). These
optional extras, such as high-performance
brakes, level control, a roof rack or a high-
performance battery, are not included in the
curb weight and the weight of the accesso-
ries.
TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires,
for example for a product recall, and thus
identify the purchasers. The TIN is composed
of the manufacturer identification code, tire
size, tire model code and manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire. 306
What you should know about wheels and tiresWheels and tires