Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
1.1. General information
1.2. Keys, locks of doors
1.3. Governing bodies, combination of devices and equipment of interior of the car
1.4. Seats and means of passive safety
1.5. Conditioning and heating
1.5.1. System of heating and ventilation
1.5.2. Deflectors
1.5.3. Mode of supply of fresh air
1.5.4. Conditioner
1.5.5. Governing bodies of a konditsoner
1.5.6. Autonomous heater and fan
1.5.7. Management of the menu of an autonomous heater
1.6. Driving and service of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







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1.5.5. Governing bodies of a konditsoner

Fig. 1.136. Governing bodies of the conditioner



The left display serves for indication of the set temperature on the party of the driver, and right for indication of the set temperature on the party of the forward passenger.
All modes of the conditioner join and switched off by pressing of keys. At the included mode in the corresponding key the diode burns.
Do not close the lattice located between keys. Behind bars there are measuring sensors.
Do not stick a lattice.
You do not clean a lattice the vacuum cleaner. Otherwise it is possible to damage the measuring devices located behind it.
Automatic AUTO mode
The recommended all-weather standard control.
Inclusion of the automatic mode:
– set temperature ranging from + 18 °C to +29 °C;
– press the AUTO key.
The set temperature is maintained in the automatic mode and humidity of air in salon decreases. Temperature, quantity and distribution of air are regulated automatically by criterion of the fastest achievement and the subsequent maintenance of the necessary temperature in salon. At the same time automatic response to fluctuations of temperature of external air, and also to influence of the sun is provided.
This mode is possible only in the temperature range from +18 °C to +29 °C. At the established temperature less than +18 °C on the display indication of "LO" appears. At a temperature more than +29 °C indication of "HI" appears. In final provisions of "LO" and "HI" the system constantly works in the mode maximum хладо – or heating capacities. At the same time there is no regulation of temperature.

NOTE
It is possible to switch by long pressing of the AUTO key on the party of the driver the mode of regulation of temperature to the party of the forward passenger and vice versa. Indication of new temperature is brought to the display.

Having warmed (thawing) of glasses
For inclusion press a key.
For switching off press the same key or the AUTO key again.
Temperature is regulated automatically. The maximum air supply is carried out mainly on channels 1 and 2.
The mode of recirculation and economy mode of "ECON" are switched off by pressing of a key.

Manual mode of recirculation
In the mode of recirculation hit in interior of the car of the polluted external air is substantially prevented.
Inclusion of the mode of recirculation:
– press a key.
Switching off of the mode of recirculation:
– again press a key, or the AUTO key, or press a key.
In the recirculation mode access of air is from the outside blocked, and its volume is distributed in salon around. The mode of recirculation is recommended to be included in the following situations:
– at the movement through a tunnel or in a transport stopper for prevention of hit of external air in salon.

ATTENTION
The movement in the mode of recirculation should not be too long-term since fresh air does not come to salon and at the switched-off conditioner glasses can mist over.

Economy mode of "ECON"
Economy mode promotes fuel economy.
For inclusion press the ECON key.
For switching off press the ECON key or the AUTO key again.
The compressor does not work in the ECON mode. Function of a heater and the fan is regulated automatically. Fuel is saved thanks to shutdown of the refrigerating unit (compressor).
Remember that in the ECON mode temperature in salon should not be below external temperature. Otherwise air will not be cooled and its humidity will not decrease. As a result glasses can mist over.
Inclusion of the ECON mode of the car with the diesel engine disconnects an additional heater and by that fuel is saved.

NOTE
If after switching off of the ECON mode (turning on of the conditioner) in a key the diode continues to burn, the conditioner means it is faulty.

Automatic mode of recirculation

Fig. 1.137. Key of the automatic mode of recirculation



The sensor of quality of air defines the increased concentration of harmful substances in external air and automatically includes the recirculation mode.
Inclusion of the mode of recirculation:
– press a key.
Switching off of the mode of recirculation:
– again press a key, or the AUTO key, or press a key.
The automatic mode of recirculation has to be included whenever possible always.
The device is ready for operation through 30 from later inclusion of ignition/launch of the engine. Only fresh air comes to this period in the car.
Degree of impurity of external air is estimated by the sensor of quality of air located in the conditioner which, depending on impurity level, gives the command of purification of air by means of serially installed filter of catching of harmful substances or team of inclusion of the mode of recirculation. At high concentration of harmful substances the conditioner automatically switches to the recirculation mode and by that access of external air to salon is blocked. At decrease in degree of impurity of external air fresh air starts over again coming to salon.
The maximum duration of the automatic mode of recirculation makes 12 min. When fogging glasses press a key at once.
Under certain conditions operation (for example, program situation) the automatic mode of recirculation is switched off. In the ECON mode and temperature less than -8 °C time of the automatic mode of recirculation is limited to 12 pages.

Conditioner and economy of fuel
Competent operation of the conditioner helps to save fuel.
The conditioner working in the cooling mode reduces engine capacity and influences fuel consumption. Therefore for the maximum minimization of time of inclusion of this mode it is necessary for economy of fuel to include the ECON mode.
When opening during the movement of windows or the lifting and movable panel of a roof include the ECON mode.
At strong heating of the car as a result of influence of the sun open for a short time doors and windows.

The conditioner operated by a key
At inclusion of ignition the conditioner parameters programmed on a key automatically are reproduced.
Urgent settings of the conditioner are programmed automatically and correspond to the used key. At launch of the engine the parameters programmed on this key automatically are reproduced. Thus, each driver can automatically reproduce the key the control preferred to them, without resorting every time to new control.

The car with the lifting and movable panel of a roof with the solar battery
At sufficient sunlight the fan after switching off of ignition continues to work on solar energy in the mode of supply of fresh air.
After switching off of ignition the fan automatically switches to food from the roof of the solar battery located in the panel. Deflectors 3 and 4 have to be open for optimum ventilation.
Ventilation works only at the closed / lifted roof panel.
At switching off of the engine in the recirculation mode the conditioner automatically switches to the mode of supply of fresh air.


1.5.4. Conditioner

1.5.6. Autonomous heater and fan