Switch on automatic air distribution control
›
Repeatedly press the button
until the indicator light on the right side of
the button is illuminated.
Switch off automatic air distribution control temporarily › If the air quality sensor does not automatically switch on the air distribution
control in the event of an unpleasant odour, you can switch it on yourself by
pressing the button . The indicator light lights up in the button on the left
side.
Switching recirculated air mode off › Press the button
AUTO or repeatedly press the button
until the indicator
lights in the button go out. WARNING
Do not leave recirculated air mode on over a longer period of time, as “stale”
air can cause fatigue of the driver and passengers, reduce attention levels and
also cause the windows to mist up. The risk of having an accident increases.
Switch off recirculated air mode as soon as the windows start to mist up. Note
■ If the windscreen mists up, press the button 1
» Fig. 91 on page 86
. Press
the button AUTO when the windscreen is demisted.
■ The automatic air distribution control operates only if the outside temperature
is higher than approx. 2 °C. ÐControlling blower
The Climatronic system controls the blower stages automatically in line with the
interior temperature. However, the blower stages can be manually adapted to
suit your particular needs.
› Repeatedly press the button
» Fig. 91 on page 86
on the left side (reduce
blower speed) or on the right side (increase blower speed).
If the blower is switched off, the Climatronic system is switched off.
The set blower speed is displayed above the button when the respective num-
ber of indicator lights come on. WARNING
■ “
Stale air” may result in fatigue in the driver and occupants, reduce attention
levels and also cause the windows to mist up. The risk of having an accident
increases.
■ Do not switch off the Climatronic system for longer than necessary.
■ Switch on the Climatronic system as soon as the windows mist up. Ð Defrosting windscreen
Switching on › Press the button
1
» Fig. 91
on page
86.
› Press the button
11
» Fig. 91
on page 86.
Switching off
› Press the button
1
» Fig. 91
on page
86 again or press the button 8
AUTO
.
› Press the button
11
» Fig. 91
on page 86 again.
The temperature control is controlled automatically. More air flows out of the air
outlet vents 1
and 2 » Fig. 87 on page 81. Ð Auxiliary heating (auxiliary heating and ventilation)
ä
Introduction
This chapter contains information on the following subjects:
Direct switching on/off 89
System settings 90
Radio remote control 90
Changing the battery of the radio remote control 91
Auxiliary heating (parking heating)
The auxiliary heating (auxiliary heating) functions in connection with the air-con-
ditioning system or Climatronic.
It can be used when stationary, when the engine is switched off to preheat the
vehicle and while driving (e.g. during the heating phase of the engine). £
88 Using the system
The engine is also preheated, if the auxiliary heating is switched on when the ve-
hicle is stationary and the engine is switched off.
The auxiliary heating (parking heating) warms up the coolant by combusting fuel
from the vehicle tank. The coolant warms up the air, which (if the blower speed is
not set to zero) flows into the passenger compartment.
Auxiliary ventilation
The auxiliary ventilation enables fresh air to flow into the vehicle interior by
switching off the engine, whereby the interior temperature is effectively de-
creased (e.g. with the vehicle parked in the sun). WARNING
■ The auxiliary heating must never be operated in closed rooms - risk of poi-
soning! ■ The auxiliary heating must not be running during refuelling - risk of fire.
■ The exhaust pipe of the auxiliary heating is located on the underside of the
vehicle. Therefore, if you wish to operate the auxiliary heating, do not park the
vehicle in such a way that the exhaust gases from the auxiliary heating can
come into contact with highly flammable materials (e.g. dry grass) or easily in-
flammable substances (e.g. spilt fuel). Note
■ If the auxiliary heating runs, the fuel consumption comes from the vehicle tank.
The auxiliary heating automatically controls the filling level in the fuel tank. If only
a low quantity of fuel is present in the fuel tank, the function of the auxiliary
heating is blocked. ■ The exhaust pipe of the auxiliary heating, which is located on the underside of
the vehicle, must not be clogged and the exhaust flow must not be blocked.
■ If the auxiliary heating and ventilation is running, the vehicle battery discharges.
If the auxiliary heating and ventilation has been operated several times over a
longer period, the vehicle must be driven a few kilometres in order to recharge
the vehicle battery.
■ The auxiliary heating only switches the blower on, if it has achieved a coolant
temperature of approx. 50 °C.
■ At low outside temperatures, this can result in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operating
problem.
■ After switching off the auxiliary heating, the coolant pump runs for a short peri-
od. ■
The auxiliary heating and ventilation does not switch on or comes on, if the ve-
hicle battery indicates a low loading state » page 180, Automatic load deactiva-
tion .
■ The auxiliary heating (parking heating) does not switch on, if the following was
shown in the information display or before switching off the ignition: Please re-
fuel! ■ The air inlet in front of the windscreen must be free of ice, snow or leaves in
order to ensure that the auxiliary heating operates properly.
■ So that warm air can flow into the vehicle interior after switching on the auxili-
ary heating, you must maintain the comfort temperature normally selected by
you, leave the fan switched on and leave the air outlet vents in an open position.
It is recommended to put the air flow in the position or .Ð Direct switching on/off
Fig. 92
Button for direct switching on/
off of the auxiliary heating (aux-
iliary heating and ventilation) on
the operating part of the air con-
ditioning system
First read and observe the introductory information and safety warn-
ings on page 88.
The auxiliary heating (auxiliary heating and ventilation) can be
directly switched
on or off at any time using the button » Fig. 92 on the operating part of the air-
conditioning system, on the operating part of the Climatronic system or via the ra-
dio remote control » page 90.
If the auxiliary heating and ventilation is not switched off earlier, it switches off
automatically after the set operating period, in the menu Running time has ex-
pired. Ð
ä
89
Heating and air conditioning system
System settings
First read and observe the introductory information and safety warn-
ings on page 88.
The following menu items can be selected in the menu
Aux. heating in the infor-
mation display (depending on the equipment fitted in the vehicle):
■ Day of the wk. - Set the current weekday.
■ Running time- Set the desired running time in 5
minute increments. The run-
ning time can be 10 to 60 minutes.
■ Mode - Set the desired heating/ventilation mode.
■ Starting time 1-3 - In each pre-set time, the day and the time (hour and minute)
can be set for switching on the auxiliary heating and/or ventilation. An empty
position can be found between Sunday and Monday when selecting the day. If
this empty position is selected, the activation is performed without taking into
account the day.
■ Activate - Enable pre-set mode.
■ Dectivate - Disable pre-set mode.
■ Factory setting - Restore factory setting.
■ Back - Return to main menu.
Only one programmed pre-set time can be active.
The last programmed pre-set time remains active.
After the auxiliary heating activates at the set time, it is necessary to pre-set a
time again.
If the pre-set menu is closed by selecting the menu item Back or if no changes
are made on the display for more than 10 seconds, the set values are stored, but
the pre-set time is not activated.
An indicator light on the button » Fig. 92 on page 89
is illuminated when the
system is running.
The running system deactivates after expiration of the operating period or can be
deactivated earlier by pressing the button to directly switch on/off the auxiliary
heating or by using the radio remote control.
Ð
ä Radio remote control
Fig. 93
Auxiliary heating: Radio remote control
First read and observe the introductory information and safety warn-
ings on page 88.
›
For switching on, press the button
ON » Fig. 93.
› For switching off, press the button
OFF .
The transmitter and the battery are housed in the housing of the remote control.
The receiver is located in the interior of the vehicle.
If the battery is properly charged, the effective range is up to 600
m. To switch
on/off the auxiliary heating, hold the radio remote control vertically with the an-
tenna A
» Fig. 93 facing upwards. The antenna must not be covered with the fin-
gers or the palm of the hand during this process. Obstacles between the radio re-
mote control and the vehicle, bad weather conditions and a weaker battery can
clearly reduce the range.
The auxiliary heating can only be switched on/off safely using the radio remote
control, if the distance between the radio remote control and the vehicle is at
least 2
m.
Warning light in the radio remote control
The indicator light in the radio remote control C
» Fig. 93 indicates after a key-
stroke if the remote control signal was received by the auxiliary heating and if the
battery is adequately charged.
Display indicator light Importance
Lights up green for 2 seconds. The auxiliary heating was switched on.
Lights up red for 2 seconds. The auxiliary heating was switched off.
Slowly flashes green for 2 seconds. The ignition signal was not received. £ ä
90 Using the system
Display indicator light
Importance
Quickly flashes green for 2 seconds. The auxiliary heating is blocked, e. g
because the tank is nearly empty or
there is a fault in the auxiliary heating.
Flashes red for 2 seconds. The switch off signal was not received.
Lights up orange for 2 seconds, then
green or red. The battery is weak, however the
switching on or off signal was received.
Lights up orange for 2 seconds, then
flashes green or red. The battery is weak, however the
switching on or off signal was not re-
ceived.
Flashes orange for 5 seconds. The battery is discharged, however the
switching on or off signal was not re-
ceived.CAUTION
The radio remote control comprises electronic components and must therefore be
protected against water, severe impacts and direct sunlight. ÐChanging the battery of the radio remote control
First read and observe the introductory information and safety warn-
ings on page 88.
If the indicator light on the radio remote control indicates a weak or discharged
battery, C
» Fig. 93 on page 90
, it must be replaced. The battery is located under
a cover B
» Fig. 93
on page 90 on the back of the radio remote control.
› Insert a flat, blunt object, such as a coin, into the gap on the battery cover, turn
the cover in the opposite direction of the arrow up to the mark and unlock it.
› Change the battery, replace the battery cover and lock it by moving it in the di-
rection of the arrow. For the sake of the environment
Dispose of the old battery in accordance with environmental regulations. Note
■ Pay attention to the correct polarity when changing the battery.
■ The replacement battery must have the same specification as the original bat-
tery. Ð
ä
91
Heating and air conditioning system
Fuses in the engine compartment
Fig. 166
Fuse box cover in engine compartment/Schematic diagram of the
fuse box
First read and observe the introductory information and safety warn-
ings on page 201.
On some vehicles, the battery cover must be removed before removing the cover
for the fuse box
» page 178.
› The cover for the fuse box is removed by pushing the circlips A
» Fig. 166
up-
wards as far as the stop. The symbol is displayed behind the clip. Now remove
the cover.
› Once the fuse has been removed, place the cover on the fuse box and push the
circlips A
back as far as the stop. The symbol
is displayed behind the clip. The
cover is locked into position.
Fuse assignment in engine compartment No. Power consumer
F1 Not assigned
F2 Control unit for automatic gearbox
F3 Measuring circuit
F4 ABS control unit F5 Control unit for automatic gearbox
F6 Instrument cluster, windscreen wiper lever, and turn signal lever F7 Power supply terminal 15, Starter
F8 Radio F9 Phone ä
No. Power consumer
F10 Engine control unit F11 Auxiliary heating and ventilation control unit
F12 Data bus control unit
F13 Engine control unit
F14 Ignition F15 Lambda probe, fuel pump relay Glow plug system
F16 Vehicle voltage control unit, right headlight, right tail light F17 Horn
F18 Amplifier for digital sound processor F19 Windscreen wipers
F20 Control valve for fuel pressure F21 Lambda probe
F22 Clutch pedal switch, brake pedal switch
F23 Coolant pump Charge pressure control solenoid valve, changeover valve for radiator
Fuel high pressure pump
F24 Active charcoal filter, exhaust gas recirculation valve, radiator fan F25 ABS control unit
F26 Vehicle voltage control unit, left headlight, left tail light F27 Glow Plug System
F28 Windscreen heater F29 Power supply of the interior
F30 Terminal X a) a)
In order not to drain the battery unnecessarily when starting the engine, the electrical components
of this terminal are automatically switched off. Ð
203
Fuses and light bulbs