2008 AUDI A4 heating

Heating and cooling109
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Deluxe automatic air conditioner plus
- basic settingsApplies to vehicles: with deluxe automatic air conditioner plusGeneral notes
The basic settings for the air conditioner can be adjusted
via the sound system or MMI*.– Select: Function selector button > control button
AC.The following functions are available:•
Automatic air recirculation ⇒page 109
•
Synchronisation ⇒page 109
•
Auxiliary heating* ⇒page 110
•
Auxiliary ventilation* ⇒page 110
•
Running time* ⇒page 112
•
Timer status* ⇒page 111
•
Timer 1* ⇒page 111
•
Timer 2* ⇒page 111
•
Timer 3* ⇒page 111
•
Supplementary heater* ⇒page 110
Applies to vehicles: with deluxe automatic air conditioner plusAutomatic recirculation
If the outside air is polluted, an air purity sensor in the
vehicle will automatically switch on the air recirculation.To prevent fumes, etc. in the outside air from entering the interior,
we recommend that the automatic air recirculation should be
switched on at all times.
If the air purity sensor in the air conditioner system detects a certain
concentration of fumes in the outside air, the control unit will either
pass the incoming air through the pollution filter or automatically
switch on the air recirculation. If there is a high concentration of
pollution in the outside air, the air conditioner automatically
switches to air recirculation and cuts off the supply of air from the
outside. As soon as the level of pollution decreases, air is fed into
the vehicle from the outside again.
If the windows mist up when the automatic air recirculation is on,
press the
 button immediately.
The automatic air recirculation can switch itself off in certain condi-
tions. If the outside temperature is less than about +10 °C, the auto-
matic air recirculation will only operate for 30 seconds. If the air
conditioner is switched to the ECON mode, or if the outside temper-
ature is less than about -1 °C, the automatic air recirculation will
only operate for 15 seconds.
Applies to vehicles: with deluxe automatic air conditioner plusSynchronisation
The air conditioner settings can be synchronised for all
passengers.When the synchronisation function is switched on, all subsequent
air conditioner settings made on the driver's side (except for the
seat heating*) are also applied to the front passenger's side.
Fig. 120 Display:
Setup AC
CAR
document_0900452a81b1b9de.book Seite 109 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling 110The synchronisation is cancelled as soon as any adjustments are
made on the front passenger's side.Applies to vehicles: with diesel engineSupplementary heater– Set the Supplementary heater to auto or off.Models with a diesel engine are equipped with a supplementary
heater to help warm up the interior more quickly. At outside temper-
atures below about +5 °C the supplementary heater is switched on
(and off) automatically when the engine is running, depending on
the coolant temperature, the temperature in the vehicle interior and
the temperature the heater is set to.Auxiliary heating and auxiliary
ventilationApplies to vehicles: with auxiliary heating - under development at the time of printingDescription
The auxiliary heating and ventilation systems heat and
cool the interior independently of the engine.The auxiliary heating
 works in conjunction with the air condi-
tioner system, but does not rely on heat from the engine. Instead of
this, the system burns fuel. The system's main function is to warm
up the interior of the vehicle and to defrost the windows in cold
weather.
The auxiliary heating system can be used both when the vehicle is
stationary and when driving (to provide extra heat while the engine
is warming up).The auxiliary ventilation
 also operates independently of the
engine. This feature can be used to cool the interior with the blower
when the vehicle is left parked in the sun.
The system will automatically activate either the auxiliary heating or
the auxiliary ventilation mode, depending on the actual tempera-
ture measured inside the car and the temperature you have set with
the air conditioner controls. It is possible to alter the temperature
setting while the auxiliary heating/ventilation is running.
Switching on and off
There are two different ways of switching on the auxiliary
heating/ventilation system.
•
Immediate start: You can switch the auxiliary heating/ventilation
on and off at any time via the sound system or MMI ⇒page 111. You
can also switch the system on and off using the remote control
⇒page 113.
•
Switching on via timer: You can programme various start times
using the timers ⇒page 111. However you must first activate the
timer before the auxiliary heating/ventilation system will switch on
automatically.
The auxiliary heating/ventilation will switch itself off at the end of
the programmed running time. The running time can be set to 15,
30, 45 or 60 minutes ⇒page 112.
WARNING
•
The auxiliary heating must not be allowed to run when the
vehicle is in a confined space because it can give off toxic fumes.
•
To avoid any possible fire risk, never have the auxiliary heating
switched on when refuelling the vehicle.
•
Because of the high temperatures which occur when the auxil-
iary heating is running, make sure when parking the car that the
exhaust outlet under the car is not obstructed in any way and that
the exhaust gases do not come into contact with flammable mate-
rials (fire risk).
document_0900452a81b1b9de.book Seite 110 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling111
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Note
•
It is advisable to open the air outlets when using the auxiliary
heating/ventilation.
•
The auxiliary heating/ventilation will not switch on if the fuel in
the tank has reached the reserve zone.
•
The auxiliary heating/ventilation will not switch on if the battery
charge level is low.
•
The symbols
 (auxiliary ventilation) or
 (auxiliary heating)
flash in the instrument cluster next to the clock display when the
auxiliary heating/ventilation is switched on. Both symbols light
continuously when the timer is activated.
•
At low outside temperatures some visible water vapour may
form in the engine compartment. This is a normal phenomenon,
and no reason for concern.
Applies to vehicles: with auxiliary heating - under development at the time of printingSwitching on/off immediately
You can switch the auxiliary heating/ventilation on and
off immediately via the sound system or MMI*.– Select: Function selector button > control button
AC > Aux. heating or Aux. ventilation.
When the auxiliary heating/ventilation is running, you can press the
button on the air conditioner console to switch off the blower
only. Pressing the button a second time will switch on the
blower again.
Note
The symbols
 (auxiliary ventilation) or
 (auxiliary heating) flash in
the instrument cluster next to the clock display when the auxiliary
heating/ventilation is switched on.
Applies to vehicles: with auxiliary heating - under development at the time of printingSetting and activating the timers
You can make the desired settings for the auxiliary
heating/ventilation on the sound system or MMI*.
Fig. 121 Display:
Setup AC
CAR
OFF
OFF
Fig. 122 Display: Timer
document_0900452a81b1b9de.book Seite 111 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling 112
Setting the timers
– Select: Function selector button > control button
AC > e.g. Timer 1 ⇒page 111, fig. 122.
Activating a timer
– Select: Function selector button > control button
AC > Timer status ⇒fig. 123.Three timers are available for the auxiliary heating/ventilation. You
can set a starting time and running time for each of the timers.
When the time set on one of the timers elapses, the date automati-
cally changes to the next day and the Timer status is reset to off. You
have to activate one of the timers (e.g. T1 on) before it will switch on
the auxiliary heating/ventilation at the time you have set. This
prevents the auxiliary heating/ventilation from switching on when
you are not using your vehicle.
Note
Before activating the timer, make sure that the correct time and date
settings have been entered. If the time and/or date are not correct,
the auxiliary heating will come on late or not at all. Please refer to
the MMI Operating Instructions for information on how to set the
date and time.
Applies to vehicles: with auxiliary heating - under development at the time of printingSetting the running time
You can set the running time on the sound system or
MMI*.– Select: Function selector button > control button
AC > Running time.The running time for the auxiliary heating/ventilation can be set to
a time between 15 and 60 minutes. The auxiliary heating/ventilation
will switch itself off at the end of the programmed running time.
Fig. 123 Display: Timer
status
CARCAR
Fig. 124 Display:
Running time
CAR
document_0900452a81b1b9de.book Seite 112 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling113
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with auxiliary heating - under development at the time of printingRemote control
The auxiliary heating and auxiliary ventilation can also be
switched on or off with the remote control.Switching on
– Press the button for about 2 seconds to activate the
auxiliary heating/ventilation ⇒fig. 125.
Switching off
– Press the button for about 2 seconds to switch
off the auxiliary heating/ventilation.Changing the battery
– Push back and remove the battery cover on the remote
control ⇒fig. 126.
– Change the battery. The diagram in the battery compart-
ment shows how the battery should be fitted. The new
battery must be of the same type as the original one.
– Re-fit the battery cover.
When it is switched on, the auxiliary heating or auxiliary ventilation
starts immediately and remains on for the period set in the menu.
The maximum running time is 60 minutes.
If you want to switch the system on again after the end of the
programmed running time, press the button .
Transmitter indicator lamp
The transmitter indicator lamp will flash accordingly to show
whether the command you sent via the remote control was
successful.
When you switch the system on by pressing the button the
indicator lamp will flash green for about 30 seconds to confirm that
the heating/ventilation has been switched on. When you switch the
system off by pressing the button the indicator lamp will
flash red to confirm that the heating/ventilation has been switched
off.
If the remote control is outside the transmitting range the indicator
lamp will flash red slowly. If there is a fault in the system (e.g. fuel
level is down to reserve), the indicator lamp will flash red rapidly. In
both cases the command will not be executed.
When the battery of the remote control is almost completely flat, the
transmitter indicator lamp will not light up and no commands will
be executed.
Fig. 125 Remote
control for auxiliary
heatingFig. 126 Remote
control: Changing
battery

A1
OFF
A2

A1
A3

A1
OFF
A2
document_0900452a81b1b9de.book Seite 113 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling 114Transmitting range
The range of the remote control transmitter is about 600 metres.
However, this can be greatly reduced by obstacles (buildings, etc.)
between the remote control transmitter and the vehicle. Hold the
aerial upright when using the remote control.
You should not normally use the remote control at a distance of less
than 3 metres from the vehicle. If you are closer than this, or if you
use the remote control inside the vehicle, this can cause signal over-
load.
For the sake of the environment
Please dispose of old batteries in the proper manner so that they do
not harm the environment.Seat heatingApplies to vehicles: with front seat heating/ventilationSeat heating / ventilation
The seat cushions and backrests of the front seats can be
heated and ventilated* electrically.
Seat heating
– Press the control button for Seat heat. ⇒fig. 127.
– Turn the rotary control to the desired setting.
Seat heating/ventilation*
– Press the control button for Seat AC ⇒fig. 128.
– To adjust the seat ventilation, turn the rotary control anti-
clockwise to the desired setting.
– To adjust the seat heating, turn the rotary control clock-
wise to the desired setting.In setting 0, the seat ventilation and seat heating are switched off.
Caution
To avoid damaging the heating elements of the seat heating, please
do not kneel on the seat or apply sharp pressure at a single point.
A4
Fig. 127 Display: Seat
heating
Fig. 128 Display: Seat
heating/ventilation
document_0900452a81b1b9de.book Seite 114 Donnerstag, 26. Juli 2007 9:16 09

Heating and cooling115
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with seat heating for rear seatsSeat heating for rear seats
The seat cushions and backrests of the two outer rear
seats can be heated electrically.– Turn the left thumbwheel (on the centre console) to
switch on and regulate the heating for the left rear seat.
– Turn the right thumbwheel (on the centre console) to
switch on and regulate the heating for the right rear seat.The heating is switched off when the thumbwheel is set to 0.
Possible settings range from 1 to 6.
The heating for the rear seats only operates when a sensor registers
the weight of the occupant in the seat. If nobody is travelling on the
rear seats, please switch off the rear seat heating to avoid activating
it unintentionally.
Caution
To avoid damaging the heating elements of the seat heating, please
do not kneel on the seat or apply sharp pressure at a single point.
document_0900452a81b1b9de.book Seite 115 Donnerstag, 26. Juli 2007 9:16 09

Driving 116DrivingSteeringApplies to vehicles: with manually adjustable steering columnAdjusting the steering wheel position
The height and reach of the steering wheel can be
adjusted as required to suit the driver.– Pull the lever ⇒fig. 129 -arrow- ⇒ up.
– Move the steering wheel to the desired position.
– Then push the lever towards the steering column until
the catch engages.
WARNING
•
Never adjust the position of the steering wheel when the
vehicle is moving - this could cause an accident.
•
For safety reasons, the lever must be pushed securely against
the steering column to prevent the steering wheel from acciden-
tally changing position while driving (accident risk).
Ignition lockStarting the engine with the key
You can use the ignition key to switch on the ignition and
start the engine.– Insert the key into the ignition lock.
–Manual gearbox: Press the clutch pedal all the way down
and move the gear lever into neutral.
–Automatic gearbox: Press the brake pedal and move the
selector lever to position P or N.
–Press in the key ⇒fig. 130 to start the engine.
– Diesel engines can take a few seconds longer than usual
to star t on cold days. Please keep your foot on the clutch
or brake pedal until the engine starts. The glow plug indi-
cator lamp

lights up in the instrument cluster while
the glow plugs are preheating.
Fig. 129 Lever beneath
steering column
Fig. 130 Ignition key
document_0900452a81b1b9de.book Seite 116 Donnerstag, 26. Juli 2007 9:16 09