2015 MERCEDES-BENZ SPRINTER window

switched off prematurely or cannot be acti-
vated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
If enough on-board voltage is available again
within 30 seconds, the rear window heating
automatically switches on again. It otherwise
remains switched off. Switching air-recirculation mode
on/off
Important safety notes When you switch on air-recirculation mode,
the windows could fog up more quickly, in
particular at low outside temperatures. Only
switch on air-recirculation mode for a short
time.
You can deactivate the intake of fresh air if
unpleasant odors enter the vehicle from out-
side. The air inside the vehicle will only be
circulated.
Heating/air-conditioning system Air-recirculation mode switches off automat-
ically after about 10 to 30 minutes, depending
on the outside temperature.
X Switch on climate control (Y page 116).
X To switch on/off: press the008Aswitch.
If the indicator lamp in the 008Abutton
lights up, air-recirculation mode is activa-
ted.
Rear-compartment heating/rear-com-
partment air conditioning On vehicles with a rear-compartment heating
and air-conditioning system, you can acti-
vate/deactivate air-recirculation mode for
the rear-compartment climate control.
X Switch on climate control (Y page 116).
X To activate: set the temperature control of
rear-compartment heating 0087(Ypage 115) or rear-compartment air conditioning sys-
tem
0044(Ypage 116) to the center position.
Only one of the two climate control sys-
tems in the rear compartment is activated
and is in air-recirculation mode.
X To deactivate: turn the temperature con-
trol of rear-compartment heating 0087
(Y page 115) or rear-compartment air-con-
ditioning system 0044(Ypage 116) clock-
wise or counterclockwise. Only change the
temperature in small increments. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
The center and side air vents are adjustable.
On vehicles with a rear-compartment air-con-
ditioning system, you can also adjust the air
vents in the roof duct.
i For virtually draft-free ventilation, adjust
the sliders of the center air vents to the
center position.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior, please observe the following notes:
R keep the air inlet grille on the hood free of
blockages, such as ice, snow or leaves.
R never cover the vents or the ventilation
grilles in the vehicle interior. 120
Adjusting the air ventsClimate control

On vehicles with rear-compartment air con-
ditioning, adjustable air vents are integrated
into the roof duct.
X To adjust the airflow: open or close the
air flap in air vents 0043as needed.
X To adjust the air distribution: turn air
vent 0043to the desired position. Operating the auxiliary heating sys-
tem Important safety notes
G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, for example in
enclosed spaces or if the vehicle gets stuck in
snow. There is a risk of fatal injury.
Switch the auxiliary heating off in enclosed
spaces without extraction systems, e.g. in
garages. If the vehicle is stuck in snow and
you have to leave the auxiliary heating run-
ning, keep the exhaust pipe and the area
around the vehicle free of snow. To ensure an adequate supply of fresh air, open a window
on the side of the vehicle that is not facing into
the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot, e.g. the exhaust system.
Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire. When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
! Turn on the auxiliary heating at least once
a month for approximately 10 minutes. The
auxiliary heating could otherwise be dam-
aged.
! Make sure that the flow of hot air is not
blocked. The auxiliary heating will other-
wise overheat and switch off.
Your vehicle may be equipped with either an
auxiliary hot-water heater or an auxiliary
warm-air heater. Adjustment and operation of the:
R hot-water auxiliary heater is done via the
on-board computer and with the auxiliary
heating button in the control panel
(Y page 123) or with the remote control
(Y page 125).
R auxiliary warm-air heater is done via the
timer above the overhead control panel
(Y page 127).
The auxiliary heating works independently of
the engine and supplements the climate con- trol system in the vehicle. The auxiliary heat-
ing heats the air in the vehicle interior to the
temperature set.
If your vehicle is equipped with a hot-water
auxiliary heater, the auxiliary heating also
keeps the coolant warm. This way, the load on
the engine is minimized and fuel is saved.
The heater booster function (Y page 130) of
the auxiliary heating supports the climate
control system when the engine is running
and the outside temperature is low.
You can use the auxiliary heating at an out-
side temperature of up to 39 ‡ (4 †). At an
outside temperature above 39 ‡ (4 †) the 122
Operating the auxiliary heating systemClimate control

Battery isolating switch
Important safety notes !
Make sure that the key is in position
0in
the ignition lock and wait at least 20 sec-
onds before disconnecting or connecting
the battery isolating switch. You could oth-
erwise damage electrical system compo-
nents.
You can use the battery isolating switch to
disconnect the power supply to all your vehi- cle's consumers. This will prevent uncontrol-
led battery discharge caused by off-load cur-
rent consumption.
If your vehicle is equipped with an auxiliary
battery in the engine compartment, you will
need to disconnect both batteries. Only then
is the electrical system fully disconnected
from the power supply.
i Only switch the vehicle to de-energized
using the battery main switch if:
R the vehicle is stationary for a lengthy
period
R it is absolutely necessary
After the power supply has been activated,
you will need to reset the side windows
(Y page 79).
Switching off the power supply !
When you clamp the connector under the
accelerator pedal, make sure that the con- nector does not become damaged or dirty.
It may otherwise not be possible to restore
the electrical connection when the parts
are reassembled. Battery isolating switch in the driver's footwell, on
the right-hand side next to the accelerator pedal
X Remove the key from the ignition lock and
wait for about 20 seconds.
X Press button 0044in the direction of the
arrow and hold.
X Pull connector 0043from the earth pin.
X Clamp connector 0043under the accelerator
pedal so that it cannot make contact with
the earth pin.
All starter battery consumers are discon-
nected from the power supply.
Switching on the power supply X
Insert the key into the ignition lock.
X Press connector 0043onto earth pin 0044until
you feel it engage and the lock inhibitor is
released.
Connector 0043must be in full contact with
earth pin 0044.
All consumers are reconnected to the DC
power supply. Driving
137Driving an d parking Z

Driving in winter
General notes G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified specialist workshop in good time at the onset of winter.
i Do not cover the radiator, e.g. with a win-
ter cover. The measurements of the on-
board diagnostic system may otherwise
return inaccurate values. Some of these
values are legally prescribed and must
therefore always be exact.
Observe the notes in the "Winter operation"
section (Y page 286).
Slippery road surfaces G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents. Do not shift down for additional engine brak-
ing on a slippery road surface. G
WARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
! Vehicles with automatic transmission
may roll only briefly in the neutral position
N. Prolonged rolling of the wheels, e.g.
when being towed, will result in transmis-
sion damage.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to neutral position
N.
X Try to maintain control of the vehicle using
corrective steering.
Drive particularly carefully on slippery roads.
Avoid sudden acceleration, steering and
braking maneuvers. Do not use cruise con-
trol.
You can find further information on winter
tires and snow chains in the "Winter opera-
tion" section (Y page 286). Driving off-road
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle. 156
Driving tipsDriving and pa
rking

cable and a folding spade are carried in the
vehicle.
X Wheels and tires: check the tire tread
depth (Y page 285) and tire pressure
(Y page 288).
Rules for driving off-road !
Always bear the vehicle's ground clear-
ance in mind and avoid obstacles, e.g. deep ruts.
Obstacles may damage the following parts
of the vehicle:
R the chassis
R the drive train
R the fuel and supply tanks
For this reason, you should always drive
slowly when driving off-road. If you have to drive over obstacles, have the co-driver
direct you.
i We recommend that you additionally
carry a shovel and a recovery rope with
shackle in the vehicle.
R Ensure that loads and items of luggage are
securely stowed or lashed down
(Y page 240).
R Before driving off-road, stop the vehicle and
shift to a low gear.
R If the surface demands it, temporarily deac-
tivate ASR when pulling away (Y page 58).
R Only drive off-road with the engine running
and a gear engaged.
R Drive slowly and smoothly. Walking pace is
necessary in many situations.
R Avoid spinning the drive wheels.
R Make sure that the wheels always remain in
contact with the ground.
R Drive with extreme care over unknown ter-
rain where you can only see for a short dis-
tance. As a precaution, get out of the vehi-
cle to take a look at the route to be taken in
advance.
R Check the water depth before fording. R
Watch out for obstacles (e.g. rocks, holes,
tree stumps and ruts).
R Avoid edges where the surface could crum-
ble or break away.
Checklist after driving off-road !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Off-road driving places a higher demand on
your vehicle than normal road operation.
Check your vehicle after driving on rough ter- rain. By doing so you will notice any damage in
good time and reduce the risk of an accident for yourself and other road users. Clean your
vehicle thoroughly before driving on public
roads.
Observe the following points after driving off-
road, on construction sites and before driving on public roads:
X Activate ASR (Y page 58).
X Clean the headlamps and tail lamps and
check them for damage.
X Clean the front and rear license plates.
X Clean the windshield, windows and exterior
mirrors.
X Clean the steps, door sills and grab han-
dles.
This increases safety of footing.
X Clean the wheels/tires, wheel housings
and the underbody of the vehicle with a
water jet.
This increases road grip, especially on wet
road surfaces.
X Check the wheels/tires and wheel hous-
ings for trapped foreign objects and
remove them.
Trapped foreign objects can damage the
wheels/tires and may be flung out from the
vehicle when you continue driving.
X Check the underbody for trapped branches
or other parts of plants and remove them.
Trapped branches or other parts of plants
increase the risk of fire and can cause dam- 158
Driving tipsDriving and parking

inclines, restrict the shift range. Select shift
range 4,3, 2or 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine.
R When driving on a downhill gradient, shift to
a low gear and take advantage of the
engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
switching the airflow and the temperature
of the heater/air conditioning to the maxi-
mum level. Open the windows if necessary.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination you need an additional dis-
tance before you can return to your original
lane. Uncoupling a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun brake is engaged.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound- ing of the overrun brake.
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
Apply the parking brake of the trailer.
X In addition, secure the trailer against rolling
away with a wheel chock or similar object.
X Remove the trailer cable and safety chains
and decouple the trailer. Permissible trailer loads and trailer
drawbar noseweights
Weight information !
On vehicles with a permissible gross vehi-
cle weight of 11030 lbs (5003 kg), the per- missible gross combination weight is less
than the total of the permissible gross vehi-
cle weight and the permissible trailer load.
Exceeding the permissible gross combina-
tion weight can lead to damage to the driv-
etrain, to the transmission or to the trailer
tow hitch.
If the vehicle or the trailer is fully laden, the relevant value for the permissible gross
vehicle weight or the permissible trailer
load is therefore lower. In this case, the
trailer or the vehicle may only be partially
loaded.
The gross trailer weight (GTW) is calculated by adding the weight of the trailer to the weight
of the load and equipment.
The maximum gross vehicle weight is vehicle-specific and equipment-dependent: 5,000 lbs
(2,268 kg) or 7,500 lbs (3,402 kg).
The maximum perm issible trailer drawbar
noseweight on the ball coupling is 500 lbs
(227 kg) or 750 lbs (340 kg). Theactual nose-
weight may not exceed the value given on the
identification plates of the trailer tow hitch or
the trailer. If the values vary, the lowest value always applies.
The gross combination weight rating (GCWR)is calculated by adding the gross weight of the
trailer to the gross vehicle weight including a
driver's weight of approximately 150 lbs
(68 kg). The permissible Gross Combination
Weight Rating is vehicle-specific and depends
on the equipment level. Towing a trailer
177Driving and parking Z

otherwise destroy electronic components
such as the alternator.
Always disconnect the starter battery in the battery case in the driver's footwell first.
! Always disconnect the battery in
the order described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
If the vehicle is expected to be out of use for over 3 weeks, disconnect the batteries. This
will prevent battery discharge caused by off-
load current consumption. Battery cover in the driver's footwell
X Switch off all electrical consumers.
X Switch off the engine and remove the key
from the ignition lock.
X Remove the floor covering in the driver's
footwell (Y page 260).
X Loosen screws 0044and slide battery
cover 0043in the direction of the arrow.
The screws must protrude beyond the
larger recesses.
X Remove battery cover 0043upwards. Starter battery in the driver's footwell
X First loosen and remove the negative ter-
minal clamp so that it is no longer in contact
with the terminal.
X Remove the cover from the positive termi-
nal.
X Loosen the positive terminal clamp and fold
it up to the side together with the pre-fuse
box.
Reconnecting the starter battery !
Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the
vehicle electronics.
X Fold the positive terminal clamp with the
pre-fuse box down to the terminal.
X Connect the positive terminal clamp.
X Attach the cover to the positive terminal.
X Connect the negative terminal clamp.
X Position battery cover 0043so that screws 0044
are positioned over the large recesses.
X Slide battery cover 0043in the direction of
travel into the smaller recesses.
X Tighten screws 0044.
X Install the floor covering in the driver's foot-
well (Y page 260).
Carry out the following work after connecting
the battery:
X Reset the side windows (Y page 79). Battery
261Maintenance and care Z

R
It is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running.
Disconnecting the additional battery !
Switch off the engine and remove the key
from the ignition lock before you loosen or disconnect the terminal clamps. You may
otherwise destroy electronic components
such as the alternator.
Always disconnect the starter battery in the
battery case in the driver's footwell first.
! Always disconnect the battery in
the order described below. Never swap the terminal clamps. You may otherwise dam-
age the vehicle electronics. Additional battery in the engine compartment
X Switch off all electrical consumers.
X Switch off the engine and remove the key
from the ignition lock.
X Open the hood (Y page 248).
X First loosen and remove the negative ter-
minal clamp so that it is no longer in contact
with the terminal.
X Remove the cover from the positive termi-
nal.
X Loosen and remove the positive terminal
clamp. Connecting the additional battery !
Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the
vehicle electronics.
X Connect the positive terminal clamp.
X Attach the cover to the positive terminal.
X Connect the negative terminal clamp.
X Close the hood.
Carry out the following work after connecting
the battery:
X Reset the side windows (Y page 79). Installing and removing the additional
battery (engine compartment)
Removing the additional battery X
Disconnect the battery (Y page 262).
X Loosen the bolts holding the retainer that
prevents the battery from moving around.
X Remove the battery holder and take out the
battery.
Installing the additional battery X
Insert the battery into the battery case.
X Insert the battery holder.
X Tighten the bolts holding the retainer that
prevents the battery in the engine com-
partment from moving around.
X Connect the battery (Y page 262). Charging
G
WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting. Battery
263Maintenance and care Z