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The auxiliary heating works independently of
the engine and supplements the climate
control system in the vehicle. The auxiliary
heating 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 of the auxiliary
heating supports the climate control system
when the engine is runnin gand the outside
temperature is low.
You can use the auxiliary heating at an
outside temperature of up to 39 ‡ (4 †). At
an outside temperature above 39 ‡(4† ) the
auxiliary heating system and the heater
booster function switch off automatically.
i If the interior motion sensor (Y page 61)
is armed and the auxiliary heating is
switched on, it is possible that the interior
temperature monitoring may cause a false
alarm. In this case, either deactivate the
interior motion sensor or switch off the
auxiliary heating. Before switching on
X Check the fuel level and top up if necessary.
The auxiliary heating is operated directly
using the vehicle's fuel. The tan kmust be
at least a quarter full to ensure that the
auxiliary heating functions.
X Switch on climate control (Y page 112).
X Se tthe temperature control to the desired
temperature (Y page 113).
X Set the air distribution as required
(Y page 113).
X Open the center (Y page 117) and side air
vents (Y page 117) and set them to the
middle position.
i The auxiliary heating automatically
switches to heater booster mode after the
engine is started. Operating with the button (control
panel)
i
Switch the heater booster function on or
off with the 0013button (Y page 125).
X To activate the auxiliary heating
system: press the upper section of the
0020 switch for longer than two seconds.
The red indicator lamp in the button lights
up. The auxiliary heating heats or ventilates
the interior to the temperature that you
have set. The blower switches to the first
level.
X To switch off auxiliary heating: press the
upper section of the 0020button.
Or
X Turn the key in the ignition lock to
position 0.
The red indicator lamp in the button goes
out. The auxiliary heating operates for
another two minutes and then switches off
automatically. Selecting
aswitch-on time
Important information You can use the on-boar
dcomputer to define
up to three switch-on times, one of which can
be selected.
The yellow indicator lamp in the 0020button
goes out after 30 minutes, if you:
R have selected the switch-on time and
R turn the key to position 0in the ignition
lock. Operating the auxiliary heating system
119Climate control Z
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On-board computer without steering
wheel buttons
X
Turn the key to position 2in the ignition
lock.
X Press the 0020button.
The 0020 symbol flashes in the display.
Or
X Press the 0004menu button on the
instrument cluster repeatedly until the
0020 symbol flashes in the display.
X Use the 000Eor000F buttons on the instrument
cluster to select the switch-on time 1 to
3 .
The switch-on time selected is displayed.
X Wait 10 seconds for the standard display to
appear.
The switch-on time is selected. The yellow
indicator lamp in the 0020button lights up.
If you do not preselect a switch-on time,
and --:-- is shown in the display, this
means that the automatic switch-on mode
is switched off. The yellow indicator lamp
in the 0020button goes out.
On-boar dcomputer with steering wheel
buttons X
Turn the key to position 2in the ignition
lock.
X Press the 0020button.
The Aux. heat submenu is shown in the
display.
If no switch-on time has been selected, the
selected switch-on time is highlighted or
Timer off is highlighted.
i You can also access the Aux. heat.submenu via the
Settings (Y
page 183)
menu. X
Use the 0011or0012 button on the
steering wheel to selec tthe desired switch-
on time.
Use the Timer off setting to deactivate
automatic switch-on.
X Press the 0010button on the steering
wheel.
The switch-on time is selected. The yellow
indicator lamp in the 0020button lights up. Setting the switch-on time
X Use the same method to select a switch-on
time as described in the "Preselecting a
switch-on time" section.
On-board computer without steering
wheel buttons
X Press the 0007reset button on the
instrument cluster.
The hour display flashes.
X Use the 000Eand 000Fbuttons on the
instrument cluster to set the hours.
X Press reset button 0007.
The minute display flashes.
X Use the 000Eand 000Fbuttons to set the
minutes.
The switch-on time is set and selected.
On-board computer with steering wheel
buttons
X Press the 0001button on the steering
wheel.
The display shows the Hours menu.
X Use the 0011and0012 buttons on the
steering wheel to set the hours.
X Press the 0001button.
The display shows the Minutes menu.
X Use the 0011and0012 buttons to set the
minutes.
X Press the 0010button.
The switch-on time is set and selected. 120
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Operation with the remote control
Important information You can switch the auxiliary heating on/off
and set the operating duration using the
remote control. You can use up to 4 remote
control units on the vehicle. These must be
synchronized for the receiver in your vehicle
(Y page 122).
The remote control has a maximum range of
approximately 600 meters. This range is
reduced by:
R sources of interference
R solid objects between the remote control
and the vehicle
R the remote control being in an unfavorable
position in relation to the vehicle
R transmitting from an enclosed space
Overview of the remote control 0005
Indicator lamp
0006 To confirm settings
0026 To switch the remote control on/off, set
the operating duration or end or cancel
settings
Indicator lamp 0005lights up in various ways to
show differen toperating modes: Signaling Meaning
Lights up red Remote control switched
on
Data transfer Signaling Meaning
Flashes red Auxiliary heating switched
off
Lights up
green Auxiliary heating switched
on
Flashes green Change operating duration
active
Flashes
alternately
red and green Remote control in
synchronizing mode
i
When the remote control battery is weak,
indicator lamp 0005flashes red rapidly.
Replace the remote control battery
(Y page 126).
You can find further information on the lamp
status in the "Problems with the auxiliary
heating" section (Y page 128).
Switching the remote control on/off The remote control switches to standby mode
after 10 seconds. Indicator lamp
0005goes out.
X To switch on: press and hold the 0002
button until indicator lamp 0005lights up red.
If ac onnection between the remote control
and the receiver in the vehicle has been
established and indicator lamp 0005:
R flashes red, the auxiliary heating is
switched off.
R lights up green, the auxiliary heating is
switched on.
X To switch off: press and hold the 0002
button until indicator lamp 0005goes out.
Switching the auxiliary heating on/off X
Switch on the remote control.
X To switch on: when indicator lamp 0005
flashes red, press the 000Abutton.
During data transmission, indicator
lamp 0005lights up red. Operating the auxiliary heating system
121Climate control Z
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When indicato
rlamp 0005lights up green, the
auxiliary heating is switched on.
X To switch off: when indicator lamp 0005
lights up green, press the 000Abutton.
During data transmission, indicator
lamp 0005lights up red.
When indicator lamp 0005flashes red, the
auxiliary heating is switched off.
Changing the operating duration X
Switch on the remote control.
X When indicator lamp 0005flashes red, press
0002 and000A simultaneously.
Indicato rlamp 0005flashes green.
X Press the 0002buttonrepeatedly until the
desired operating duration is shown.
R 20 minutes
Indicator lamp 0005flashes green twice.
R 30 minutes
Indicator lamp 0005flashes green three
times.
R 40 minutes
Indicator lamp 0005flashes green four
times.
R 60 minutes
Indicator lamp 0005flashes green six
times.
X Press the 000Abutton.
During data transmission, indicator
lamp 0005lights up red.
If indicator lamp 0005emits two long, green
flashes, the selected operatin gduration is
stored.
i If no adjustmen tis made, indicator
lamp 0005flashes six times and the remote
control goes into standby mode. Synchronizing the remote control X
Press the 0020auxiliary heating button in
the control panel (Y page 119) for longer
than 10 seconds.
When you press and hold the 0020button,
the red indicator lamp lights up in the
button.
When the red indicator lamp in the 0020
button flashes, the receiver in the vehicle
is ready for synchronizing.
X Press and hold the 0002remote control
button until indicator lamp 0005lights up red.
If there is an active connection between the
remote control and the receiver, indicator
lamp 0005flashes alternately red and green.
The remote control is in synchronizing
mode.
i If you press the 0002button againont he
remote control after starting
synchronization, you will only synchronize
this remote control unit with the receiver.
Any other remote control units that were
synchronized will be cleared. Indicator
lamp 0005flashes alternately red and green
(very slowly).
X Press the 000Abutton on the remote
control.
During data transmission, indicator
lamp 0005lights up red.
When remote control indicator lamp 0005
emits two long green flashes, the selected
operating time is synchronized. The
indicator lamp in the 0020auxiliary heating
button goes out. Operation with the timer
Important safety notes This is only for vehicles with a hot-water
auxiliary heater.
G
DANGER
If a switch-on time has been selected, the
auxiliary heating switches on automatically. 122
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R
If the ventilation is insufficient, poisonous
exhaust gases can collect, in particular
carbon monoxide. This is the case in
enclosed spaces, for example .There is a
risk of fatal injuries.
R If highly flammable substances or
flammable materials are nearby, there is a
risk of a risk of fire and explosion.
Always deactivate the preselected switch-on
times if you stop the vehicle in such or similar
situations.
Use the timer to:
R activate/deactivate immediate heating
mode
R set up to three switch-on times
R set the operating duration from 10to
120 minutes or to continuous operation
R set the heating level (preselected
temperature) to a range between 10 and 30
Timer overview Timer above the overhead control panel
0005
Program column
0001 Sets preselection memory 1 – 3
(Y page 124)
Sets weekday (Mon. – Sun.)
(Y page 123)
0006 Menu bar
0020 Activates/deactivates immediate
heating mode (Y page 124)
0002 Sets the program times
(Y page 124) 0001
Sets the day, time and the operating
duration (Y page 123)
0004 Sets the heating level
(Y page 125)
0026 Display panel for: time, heating level
and operating duration
0005 Continuous operation mode active
0004 Heating level set
0025 Selects options in program column 0005or
menu bar 0006(forwards)
Increases values
0023 Confirms a selection or setting
0024 Status bar
0020 Heating mode activated
0018 Activates the timer
Cancels or ends settings in a menu
0019 Selects options in program column 0005or
menu bar 0006(backwards)
Reduces values
Activating the timer The timer switches to standby mode after
10 seconds. The display goes off.
X
Press and hold the 0002button until the
menu bar appears in the display and the
time is shown.
Setting the day, time and operating
duration You must reset the day, time, and default
value for the operating duration:
R
during initial operation
R after a voltage supply interruption (e.g. if
the battery has been disconnected)
R after a malfunction.
You can find further information on
malfunctions in the "Problems with the
auxiliary heating" section (Y page 128). Operating the auxiliary heating system
123Climate control Z
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X
Press the 0003or0006 button until the
0001 symbol in menu bar 0006flashes.
X Press the 000Abutton.
In program column 0005, the day selected
flashes.
X Press the 0003or0006 button to set the
desired day.
X Press the 000Abutton.
The day selected is stored. The hour setting
of the clock flashes.
X In the same way, set the hour and
subsequently the minutes, then confirm by
pressing the 000Abutton.
The time is stored. Program column 0005
disappears and the operating duration
flashes.
i The operating duration set is the default
setting for immediate heating mode. You
can set the operating duration from 10 to
120 minutes or activate continuous
operation.
X Using the 0003or0006 button, set the
minute value or select the 0005symbol for
continuous operation.
X Press the 000Abutton.
The operating duration is stored. The time
is shown.
Activating/deactivating immediate
heating mode X
To switch on: press the0003or0006
button until the 0020symbol in the menu
bar flashes.
X Press the 000Abutton.
The operation duration flashes in the
display.
i You can preset the default value that is
shown (Y page 123).
X Using the 0003or0006 button, set the
minute value (10 – 120) or select the
0005 symbol for continuous operation. X
Press the 000Abutton.
Immediate heating mode is activated. The
time and the 0020symbol appear.
X To switch off: press the0003or0006
button until the 0020symbol flashes in the
menu bar, and then press the 000Abutton.
Immediate heating mode is deactivated.
The 0020 symbol disappears.
The auxiliary heating operates for another
two minutes and then switches off
automatically.
i If you switch off the ignition while
immediate heating mode (operating
duration 10– 120 minutes) is active,
immediate heating mode is also switched
off. The auxiliary heating operates for
another two minutes and then switches off
automatically.
If you have set continuous operation as the
operating duration and you switch off the
ignition, the auxiliary heating switches off
automatically after about 15 minutes .If, in
the remaining time, the ignition is switched
on again, continuous operation of the
auxiliary heating continues.
Setting the preselection time G
WARNING
The auxiliary heating must not be operated if
there are highly flammable substances
nearby or in enclosed spaces without an
extraction system. Make sure that the
auxiliary heating is not switched on
automatically by the timer in such places. If
this possibility exists, deactivate the
respective programmed time.
You can set three preselectio ntimes using
the timer.
Observe that when setting the preselection
time, this does not correspond to the switch-
on time but to the switch-off or departure
time. The auxiliary heatin gsystem starts up
automatically and runs fo rthe operating
duration set prior to departure. 124
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Example:
For a planned departur etime of
7:00 a.m., you should also set the
preselection time to 7:00 a.m. If the operating
duration is prese tto 40 minutes, for example,
the auxiliary heating startsu p at 6:20a.m.
If an identical time (time and day) is set in the
preselection memory, onl ythe last time set is
saved.
After a malfunction or if the battery has been
disconnected, you must set the preselection
times again. You can find further information
on malfunctions in the "Problems with the
auxiliary heating" section (Y page 128).
X Press the 0003or0006 button until the
0002 symbol in the menu bar flashes.
X Press the 000Abutton.
In the program column, the 0001
preselection memory numbers appear. The
selected preselection memory flashes.
X Press the 0003or0006 button to select the
desired preselection memory.
X Press the 000Abutton.
The preselection memory is selected. The
days are shown.
X Set the day and time as described in the
"Setting the day, time and operating
duration" section (Y page 123).
The preselection time is stored. The
program column disappears. In the display
panel, the on message and the
0020
symbol appear.
X Press the 000Abutton.
The operating duration flashes.
X Press the 0003or0006 button to set the
minute value (10 – 120).
X Press the 000Abutton.
The operating duration for the preselection
time is saved. The time and number of the
selected preselection memory are shown.
i The preselection memory that will be
activated next is underlined. Additionally,
the day that is set appears. Deactivating the preselection time X
Carry out the steps as described in the
"Setting the preselection time" section.
If the 0020 symbol in the status bar is shown:
X Press the 0003or0006 button until the
off message in the display panel is shown.
X Press the 000Abutton.
The preselection time is deactivated. The
time is shown.
Setting the heating level You can set the heating level to a range
between 10 and 30.
The heating level corresponds to a
preselection temperature for the vehicle
interior. This is a guide value and may,
depending on the outside temperature, differ
from the actual vehicle interior temperature.
X
Press the 0003or0006 button until the
0004 symbol in the menu bar flashes.
X Press the 000Abutton.
The heating level display flashes.
X Using the 0003and0006 buttons, set the
desired heating level to a range between 10
and 30.
X Press the 000Abutton.
The heating level is set and the 0020
symbol appears. Switching the heater booster function
on/off
Vehicles with auxiliary heatingOperating the auxiliary heating system
125Climate control Z
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At an outside temperature of up to
39 ‡(4 †) the fuel-fired heate
rbooster
system heats the vehicle interior as quickly
as possible when the engine is running.
The auxiliary heating automatically switches
to heater booster mode after the engine is
started.
At an outside temperature above 39 ‡(4 †)
the auxiliary heating system and the heater
booster function switch off automatically.
If you switch off the engine without switching
off the heater booster function, the system
will be switched on the next time the engine
is started (memory function).
i Switch the auxiliary heating on or off with
the 0020 button (Y page 119).
X To switch on/off: press the0013switch.
If the indicator lamp in the button lights up,
the heater booster function is switched on.
After switching off, the auxiliary heating
operates for about another three minutes and
then switches off automatically. Replacing the remote control battery
G
WARNING
Batteries contain toxic and corrosive
substances. If batteries are swallowed, it can
result in severe health problems. There is a
risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately. H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner
.Take discharged
batteries to a qualified
specialist workshop or a
special collectio npoint for
used batteries.
If the indicator lamp on the remote control
flashes red rapidly, the remote control battery
is discharged. You should replace the remote
control battery.
You need a battery of the type CR2430, which
can be obtained at any qualified specialist
workshop. X
Remove battery cover 0006using a suitable
implement, e.g. a coin, by turning it
counter-clockwise.
X Check the seal on battery cover 0006for
damage and, if necessary, replace.
X Remove old batteries 0026.
X Insert new, clean battery 0026into the
battery tray with the positive pole facing
upwards. Use a lint-free cloth to do so. 126
Operating the auxiliary heating systemClimate control