197 Operation
Battery isolating switch*
4
You can disconnect the current to all your
vehicle’s consumers using the battery
isolating switch. This will prevent uncon-
trolled battery discharge caused by quies-
cent current consumption.The battery isolating switch is to the right
of the accelerator pedal in the driver’s foot-
well.
1Connector
2Slide\1Take the key out of the ignition lock
and wait for approx. 20 seconds.
\1Move red slide2 down in the direc-
tion of the arrow and disconnect
connector1 from the ground pin.
\1Clamp connector1 under the acceler-
ator pedal so that it cannot make con-
tact with the ground pin.
The consumers of the vehicle battery
are cut off from the electrical circuit.Warning
G
If the vehicle is equipped with an auxiliary
battery in the engine compartment, it is nec-
essary to disconnect both batteries when
working on the vehicle electrical system.
Only then is the electrical system fully dis-
connected from the power supply.iOnly disconnect the vehicle electrical
system from the power supply using
the battery isolating switch if the vehi-
cle is to be parked up for a long period
or when this is absolutely necessary.
After the power supply is switched on,
you must reset the electric sliding door
(\2page 57).
!
CAUTION
Make sure that the key is in position0
in the ignition lock and wait at least
20 seconds before disconnecting or
connecting the battery isolating
switch. You could otherwise damage
electrical system components.
Switching off the electrical system!
CAUTION
When you clamp the connector under
the accelerator pedal, make sure that
the connector does not become:
\4dirty
\4damaged
It may otherwise not be possible to re-
store the electrical connection when
the parts are reassembled.
200 OperationTires and wheels
4
Only use wheels and tires which have been
tested and approved by the vehicle manu-
facturer.
Warning
G
Do not use a tire, wheel size or rating other
than that specified for your Sprinter vehicle.
Some combinations of unapproved tires and
wheels may change suspension dimensions
and performance characteristics, resulting
in changes to steering, handling, and brak-
ing of your Sprinter vehicle. This can cause
unpredictable handling and stress to steer-
ing and suspension components. You could
lose control and have an accident resulting
in serious injury or death. Only use the tire
and wheel sizes with load ratings approved
for your Sprinter vehicle, refer to "Tire and
loading information".
Never use a tire with a smaller load index or
speed index or capacity other than what was
originally equipped on your Sprinter vehicle.
Using a tire with a smaller load index could
result in tire overloading and failure. You
could lose control and have an accident.
Failure to equip the vehicle with tires having
adequate speed capability can result in sud-
den tire failure and loss of vehicle control.
!
CAUTION
Replacing original tires with tires of a
different size may result in false speed-
ometer and odometer readings.
Warning
G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use genuine
wheel bolts approved by the vehicle manu-
facturer and specified for the particular rim
type. Failure to do so can result in the bolts
loosening and possibly an accident.
Do not use retreaded/remolded tires. This
process does not always permit previous
damage to be detected. Therefore vehicle
safety cannot be guaranteed if retreaded/
remolded tires are fitted.
Warning
G
Fitting other wheel sizes to the vehicle will
change the vehicle’s handling characteris-
tics and may lead to an accident resulting in
death, severe personal injuries and property
damage.
Only certain tires meeting the tire size/
load/speed rating specifications are certi-
fied to conform to FMVSS 110 for the
Sprinter vehicle at this time. Please check
your side walls of your originally equipped
tires for specific makes/sizes, and speed
load ratings when you need to replace your
tires.
To prevent accidents resulting in possible
death, severe injury or property damage,
use only the tire and wheel sizes with load
ratings approved for your Sprinter vehicle
for your tire replacement.
Refer to "Tire and loading information"
(\2page 205).
201 Operation
Tires and wheels
4
Cuts and punctures in radial tires are re-
pairable only in the tread area because of
side wall flexing. Consult an authorized tire
dealer for radial tire repairs.\4Only use sets of tires and rims of the
same type and make.
\4Tires must be of the correct size for the
rim.
\4Break in new tires for approximately
65 miles (100 km) at moderate
speeds.
\4Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss or
damage to the tire beads.
\4If the vehicle is heavily loaded, check
tire inflation pressure and correct as
required.
\4Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm) for sum-
mer tires and
1/6in (4 mm) for winter
tires.
Radial-ply tiresWarning
G
Combining radial ply tires with other types
of tires on your Sprinter vehicle will change
the vehicle’s handling characteristics and
may lead to an accident resulting in death,
severe personal injuries and property dam-
age. Always use radial ply tires in sets of 4
(or 6, in case of vehicles with dual rear
wheels).
Never combine them with other types of
tires.
Tire valves (snap-in valves)Warning
G
Sprinter tire valves are tested and approved
under rough operating conditions.
The installation of additional hub caps or
other wheel simulators could cause damage
to the tire valve and lead to a loss of tire
pressure at the valve stem.
Do not install any of these parts on your
Sprinter vehicle. To help ensure safe and re-
liable operation of your Sprinter vehicle,
only use parts and accessories tested and
approved by the vehicle manufacturer for
your Sprinter vehicle.!
CAUTION
For safety reasons, the following tire
valves from the Schrader company
must be used on the vehicles:
\4TR 600 for vehicle model type 2500
\4TR 418 for vehicle model type 3500
Other tire valves could be damaged by
the specified tire pressures.Important guidelines
202 OperationTires and wheels
4
\4When replacing individual tires, you
should mount new tires on the front
wheels first.
The tire inflation pressure should be
checked regularly, i.e. at least each time
you refuel the vehicle. The preferred inter-
val for checking the tire inflation pressure,
however, is before each trip.
For more information on checking tire in-
flation pressure, refer to "Recommended
tire inflation pressure" (\2page 210).Tire inspection
Every time when checking the tire inflation
pressure, the tires should also be inspect-
ed for the following:
\4excessive treadwear, refer to "Tread
depth". the condition of the tread
depths, i.e. uneven tread wear or ex-
cessive treadwear on one side. Turn
the front wheels to full lock if neces-
sary to enable you to check the inner
edge of the front tires more easily. You
must also always check the inside of
the tire tread on the rear wheels.
\4cord or fabric showing through the
tire’s rubber
\4bumps, bulges, cuts, cracks or splits in
the tread or side of the tire
\4foreign objects between the tires
(on vehicles with twin tires)
Replace the tire if any of the above condi-
tions is found.
Also inspect the spare tire periodically for
condition and inflation. Spare tires will age
and become worn over time even if never
used, and thus should be inspected and re-
placed when necessary.Tire damage
Tire damage can be caused
by:
\4the vehicle’s operating conditions
\4tire aging
\4curbs
\4foreign objects
\4insufficient or excessive tire pressures
\4weather and environmental influences
\4contact with oil, grease, fuel, etc.
Tire care and maintenanceWarning
G
Regularly check the tires for damage. Dam-
aged tires can cause tire inflation pressure
loss. As a result, you could lose control of
your vehicle.
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
Warning
G
Driving over curbs or sharp-edged objects
can cause damage to the tire substructure
which is not visible from the outside.
Damage to the tire substructure cannot be
detected until later and can cause the tire to
burst.
\2\2
203 Operation
Tires and wheels
4
Life of tire
The service life of a tire depends on varying
factors including but not limited to:
\4Driving style
\4Tire inflation pressure
\4Distance drivenTread depth
Do not allow your tires to wear down too
far. Adhesion properties on wet roads are
sharply reduced at tread depths under
1/8in (3 mm) for summer tires and
1/6in
(4 mm) for winter tires.
Treadwear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and be-
come visible at a tread depth of approxi-
mately
1/16
in (1.6 mm), at which point
the tire is considered worn and should be
replaced.
Recommended minimum tire tread depth:
\4Summer tires
1/8in (3 mm)
\4Winter tires
1/6in (4 mm)
You could lose control of the vehicle as a re-
sult, cause an accident and injure yourself
or others.
Avoid driving up against curbs or parking the
vehicle with part of the tire tread surface on
the curb.Warning
G
Tires and spare tire should be replaced after
6 years, regardless of the remaining tread.
Warning
G
Although the applicable federal motor safety
laws consider a tire to be worn when the
Treadwear Indicators (TWI) become visible
at approximately
1/16in (1.6 mm), we rec-
ommend that you do not allow your tires to
wear down to that level. As tread depth ap-
proaches
1/8in (3 mm) for summer tires or
1/6in (4 mm) for winter tires, the adhesion
properties on a wet road are sharply re-
duced.
Depending upon the weather and/or road
surface (conditions), the tire traction varies
widely.
205 Operation
Tires and wheels
4
The following labels on the vehicle show
how much weight it may properly carry.
\4Only vehicles with a gross weight ca-
pacity less than 10,000 lbs (4500 kg)
The tire and loading information plac-
ard can be found on the driver’s door B-
pillar. This placard tells you important
information about the number of peo-
ple that can be in the vehicle and the
total weight that can be carried in the
vehicle.
It also contains information on the
proper size and recommended tire in-
flation pressures for the original equip-
ment tires on your vehicle.
\4The certification label can be found be-
low the driver’s seat on an outward fac-
ing position of the mounting pillar
(\2page 373). This label tells you about
the gross weight capacity of your vehi-
cle, called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the
weight of the vehicle, all occupants,
fuel and cargo. The certification label also tells you about the front and rear
axle weight capacity, called the Gross
Axle Weight Rating (GAWR). The GAWR
is the total allowable weight that can be
carried by a single axle (front or rear).
Never exceed the GVWR or GAWR for
either the front axle or rear axle.
1Tire and loading information placard on
driver’s door B-pillar
The information below explains how to
work with the information contained on the
placard with regards to loading your vehi-
cle.Tire and loading informationLoading the vehicle
Warning
G
Do not overload the tires by exceeding the
specified load limit as indicated on the tire
and loading information placard on the driv-
er’s door B-pillar or on the certification label
below the driver’s seat on the mounting pil-
lar. Overloading the tires can overheat them,
possibly causing a blowout. Overloading the
tires can also result in handling or steering
problems, or brake failure.
Overloading of tires is dangerous. Overload-
ing can cause tire failure, affect vehicle han-
dling, and increase the stopping distance.
Use tires of the recommended load capacity
for the vehicle. Never overload them.
The vehicle maximum load on the tire must
not exceed the load carrying capacity of the
tire on your vehicle. You will not exceed the
tire’s load carrying capacity if you adhere to
the loading conditions, tire size and cold tire
inflation pressures specified on the tire and
loading information placard, tire pressure la-
bel and this section.
210 OperationTires and wheels
4
To assure that your vehicle does not ex-
ceed the maximum permissible weight lim-
its (GVWR and GAWR for front and rear
axle), have the loaded vehicle (including
driver, passengers and all cargo and, if ap-
plicable, trailer fully loaded) weighed on a
suitable commercial scale.
Trailer tongue load
The tongue load (tongue weight at the
hitch ball) of any trailer is an important
weight to measure because it affects the
load you can carry in your vehicle. If a trail-
er is towed, the tongue load must be added
to the weight of all occupants riding and
any cargo you are carrying in the vehicle to
prevent exceeding your Sprinter tow vehi-
cle’s rear GAWR. The tongue load typically
is between 10% and 15% of the trailer
weight and everything loaded in it.
For example, if the trailer tongue load
equals 1 40 lbs and the determined avail-
able cargo/luggage and trailer tongue
weight equals 750 lbs, the amount of avail-
able cargo and luggage load capacity is
610 lbs. (750 – 140 = 610 lbs.)For further information on vehicle and trail-
er weights and ratings, loading a trailer and
trailer towing, see “Trailer towing”
(\2page 175).Your vehicle is equipped with either the
tire and loading information placard
1 or
with the tire inflation pressure placard lo-
cated on the driver’s door B-pillar.
The tire inflation pressure (including the
spare wheel) should be checked regularly
and adjusted as well as inspected for signs
of tire wear or visible damage. Use a good
quality pocket-type gauge to check tire in-
flation pressure.
Recommended tire inflation pres-
sureWarning
G
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road de-
bris, potholes etc.
1. For vehicles with a gross weight capacity less than
10 000 lbs (4 536 kg) (USA only).1Tire and loading information placard or
tire inflation pressure placard on dri-
ver’s door B-pillar
212 OperationTires and wheels
4
The placard lists the recommended cold
tire inflation pressures for all load conditi-
ons up to the maximum permissible weight
limits (GAWR). The tire inflation pressures
listed apply to the tires installed as original
equipment.
Important notes on tire inflation pres-
sure
Tire temperature and tire inflation pressure
are also increased while driving, depending
on the driving speed and the tire load.
Tire inflation pressure changes by approxi-
mately 1.5 psi (0.1 bar) per 18 °F (10 °C)
of air temperature change. Keep this in mind when checking tire inflation pressure
where the temperature is different from
the outside temperature.
For example:
If the inside temperature is 68 °F (20 °C)
and the outside temperature is 32 °F
(0 °C) then the cold tire inflation pressure
should be increased by 3 psi (0.2 bar),
which equals 1.5 psi (0.1 bar) for every
18 °F (10 °C) for this outside temperature
condition.
Check tire pressures more often if subject
to a wide range of outdoor temperatures,
as tire pressures vary with temperature
changes.Warning
G
If the tire inflation pressure repeatedly
drops:
\4Check the tires for punctures from for-
eign objects.
\4Check to see whether air is leaking from
the valves or from around the rim.
Warning
G
Tire pressure may increase during opera-
tion.
Never reduce this normal pressure build up
or your tire pressure will be too low.
Underinflated tires wear excessively and/or
unevenly, adversely affect handling and fuel
economy, and are more likely to fail from be-
ing overheated.