2005 DODGE SPRINTER heating

122 UNDERSTANDING YOUR INSTRUMENT PANELResidual Engine Heat Utilization (REST)
The REST switch (1) is located on the
center section of the dashboard.
The residual engine heat utilization
system can be used to keep the
vehicle interior warm for some time
after the engine is switched off.
Turn the key to position 0 in the ignition lock or
remove it altogether.
To switch on:
1. Press the residual engine heat utilization switch (1), the indicator lamp (2) lights up.
The blower will run at speed 1 regardless of the
setting of the airflow control.
2. Set the temperature control as required, refer to "Heating, Ventilation".
To switch off:
Press the residual engine heat utilization switch (1)
again, the indicator lamp (2) goes out. The residual engine heat utilization is automatically
switched off if:
1. the key is turned to position 2 in the ignition lock,
2. after about 30 minutes,
3. if the battery voltage is too low.
AIR CONDITIONING, REGULATED (OPTIONAL)
The air conditioning switch (1) is
located on the center section of the
dashboard.
The air conditioning can be used to
cool or dehumidify the air in the
vehicle. The selected temperature is
reached as quickly as possible and
then held constant.
The air conditioning is only operational when the
engine is running.

UNDERSTANDING YOUR INSTRUMENT PANEL 129
4
HEATER BOOSTER
The switch (1) for activating the
heater booster system is located in
the center section of the dashboard.
The heater booster system can be
switched on while the vehicle is
being driven to help the engine to
reach its normal operating
temperature more quickly, which
will help to heat up the passenger compartment as
quickly as possible when the heating is switched on. To switch on with the engine running:
Press switch (1), the indicator lamp (2) lights up.
To switch off:
Press switch (1) again or switch the engine off. The
heater booster will then switch to run-on mode (about
2minutes).
NOTE:
When the vehicle is being driven and a coolant
temperature of over 185 °F (+80 °C) is reached, the
heater booster system will switch to regulation mode.
If the coolant temperature drops to below 167 °F
(+75 °C) with the heater booster system switched on,
heat output is increased again.
If the key is turned to position 0 in the ignition lock
(run-on for about 2 minutes), the last setting selected at
switch (1) is retained when the engine is restarted
(memory function).
The operation of the heater booster system is usually
not required at outside temperatures above 41 °F
(+5 °C).

130 UNDERSTANDING YOUR INSTRUMENT PANELAUXILIARY HEATER – WATER OR AIR HEATER
(OPTIONAL)
NOTE: The auxiliary heater (water or air heating
device) can be used whether or not the engine is
running.
After you have filled your vehicle’s gas tank with
winterized diesel fuel for the first time, it is
recommended that you operate the auxiliary heater
before beginning a journey or operating the heater
continuously so that any summer diesel fuel left in the
auxiliary heater can combust.
Before switching the auxiliary heater on make sure that
that the battery is sufficiently charged and that there is
enough fuel in the tank. At least a quarter of the tank
should be filled up. See Fuel Gauge.
WARNING!
The auxiliary heating must not be operated at gas
stations due to the risk of fire and explosion. For
this reason, switch off the auxiliary heating before
refuelling.
Auxiliary heaters emit fumes when in operation,
including carbon monoxide.
Inhaling carbon monoxide is a health hazard and
can result in unconsciousness and death.
For this reason, do not operate auxiliary heating in
enclosed spaces without ventilation or an
extractor system, e.g. in a garage. Otherwise you
could endanger yourself and others.
Always keep the ground under the vehicle as clear
as possible so that the auxiliary heater can receive
enough combustion air and exhaust fumes can
escape. Otherwise you could endanger yourself
and others.
WARNING!
Vehicles for transporting hazardous goods:
Observe the relevant safety regulations.

UNDERSTANDING YOUR INSTRUMENT PANEL 131
4
NOTE: After three successive attempts to start the
heater, a malfunction will be recorded in the integrated
diagnostic system and no further operation on
auxiliary heater will be available (lock-out). The work
to annul the lock-out must be carried out at an
authorized Sprinter Dealer.
The auxiliary heater should be run at least once a
month for about 10 minutes.
The maximum heating period is 120 minutes. For more
information, refer to "Switching the Auxiliary Heater
On and Off - Ignition On".
The auxiliary heater will automatically switch off if the
fuel level is under about 4 US gal (15 l).
In case of faults, refer to "Auxiliary Heater – Tips for
Coping with Problems".
WARNING!
Aerosals, gas cartridges and other pressurized
containers transported in the vehicle may be high-
ly flammable and could explode when heated.
Make sure, particularly on vehicles with an air
heater, that such containers are not placed in the
flow of hot air of the auxiliary heating system
Otherwise there is a risk of severe personal
injuries, death and property damage due to
explosion.
WARNING!
Vehicles with air heater:
For safety reasons, we strongly recommend that
the heat exchanger be replaced by an authorized
Sprinter Dealer after 10 years of use.
If the vehicle is sold, the owner is required to
inform the buyer of this requirement. This should
be done when the Operator’s Manual is
transferred to the buyer.

UNDERSTANDING YOUR INSTRUMENT PANEL 133
4
6. ButtonH – Select memory (1 – 3), activate
preselected time
7. Button ö – Switch on heater
8. Button ý – Set time, day, and preselected time;
shorten heating period (min. 1 minute)
9. Button þ – Set time, day, and preselected time;
lengthen heating period (max. 120 minutes)
10. Air Heater only, adjustable temperature selection transformer – adjustment range from 50 °F to 86 °F
(+10 °C to +30 °C)
NOTE: All symbols and digits in the display will flash
if the battery voltage has been interrupted over a
longer period of time. The timer must be reset.
The heater cannot be switched on until the time of day
has been set.
The timer lights up when the heater is switched on. Switching the Auxiliary Heater On and Off - Ignition
Off
To switch it on:
Press button
ö.
The vehicle-side blower automatically switches on.
Display: Symbol ö and remaining heating period.
The remaining heating period can be lengthened by
using the button þ (max. of 120 minutes); it may be
shortened by using the button ý (min. of 1 minute).
To switch off:
Press button ö again.
The blower inside the vehicle automatically switches
off. The auxiliary heater will automatically switch off
after about 3 minutes.
Display: Current time and current day of the week
(about 15 seconds).
Switching the Auxiliary Heater On and Off - Ignition
On
To switch it on:
Press the button ö.

134 UNDERSTANDING YOUR INSTRUMENT PANELThe auxiliary heater is running.
Display: Symbol ö, current time and current day of
the week.
If the ignition is switched off, the auxiliary heater will
remain on for another 15 minutes before automatically
switching off. The remaining heating period can be
lengthened by using the button þ (max. of
120 minutes); it may be shortened by using the
button ý (min. of 1 minute).
To switch off:
Press the button ö again.
The auxiliary heater will automatically switch off after
about 3 minutes.
Display: Current time and current day of the week.
Setting the time and day
Press the button ” until the "Time" display begins to
flash.
Use either the button ýorþ to set the current
time. The current time has been saved when the
display stops flashing or the button ” is used for
confirmation. The "Day" display then flashes.
Use either the button
ýorþ to set the current
day of the week. The current day has been saved when
the display stops flashing or the button ” i s u s e d f o r
confirmation.
When the ignition is switched on, the current time and
day remain on display. When the ignition is switched
off, the display disappears after about 15 seconds.
Setting/Activating Preselected Times
3 preselected times may be saved.
Setting preselected times:
Press the button H repeatedly until the desired
memory (1 – 3) flashes.
Briefly press the button ýorþ – the preselected
time will flash.
Use either the button ýorþ to set the
preselected time. The current preselected time has
been saved when the display stops flashing.
Activate the preselected time (up to 24 hours):

UNDERSTANDING YOUR INSTRUMENT PANEL 135
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Press the buttonH until the desired memory (1 – 3)
and the preselected time both flash.
The preselected time has been activated when the
display stops flashing. Within the next 24 hours, the
heater will switch on at the preselected time displayed.
Activate the preselected time (from 24 hours to a max.
of 7 days):
A preselected time may be chosen up to 7 days
beforehand.
Press the button H until the desired memory (1 – 3)
and the preselected time both flash.
After about 5 seconds, the "Preselected Day" display
will appear – use either the button ýorþ to set
the preselected day.
The preselected time and day have been activated
when the display stops flashing and when the current
time, activated memory, and the flashing symbol ö
appear in the display.
To call up the activated memory:
Briefly press the button H – the preselected day and
time will be displayed for about 5 seconds. Switching off preselected times:
Press the button
H repeatedly until no memory is
displayed – no preselected time is activated.
Setting the Heating Period
Settings between 1 minute and 120 minutes may be set
for heating periods to run when the ignition is
switched off.
Do not switch on the heater.
Press the button ý until the current heating period
begins to flash.
Use either the button ýorþ to set the desired
heating period. The new heat ing period will be saved
as soon as the display disappears.
Auxiliary Heater Operation
The symbol ö appears in the timer display as soon
as the heater is switched on. After about 20 to
50 seconds, the heater runs with the complete flow of
heat, so that the operating temperature is reached as
soon as possible.

138 UNDERSTANDING YOUR INSTRUMENT PANELAUXILIARY HEATER – TIPS FOR COPING WITH
PROBLEMSNOTE: After three successive attempts to start the
heater, a malfunction will be recorded in the integrated
diagnostic system and no further operation on
auxiliary heater will be available (lock-out). The work
to annul the lock-out must be carried out at an
authorized Sprinter Dealer.
The heater either does not switch on or automatically
switches off:
 Insufficient fuel, fill up the fuel tank. Start up heater two times, until the fuel lines are filled.
 The auxiliary heater will automatically switch off if the fuel level is under about 4 US gal (15 l).
 The fuses in the fuse box are damaged. Electric fuses.
 The battery voltage is too low, an undervoltage protector switches off the heater if the battery
voltage falls below about 10 volts. The heater motor does not run
 The battery voltage is too low, check the battery.
Batteries.
 The fuses in the fuse box are damaged. Electric fuses.
 The heater motor is damaged.
Overheating The air channels are clogged. The heater can be restarted once the fault has been
repaired. When this is done, the heater should be
switched on and off.
 The heater will remain switched off after it has been overheated a number of times (about 10 times in
succession). Have the fault repaired by an
authorized Sprinter Dealer.
NOTE: Repairs should only be made by an authorized
Sprinter Dealer.