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


1.5.4. Conditioner

The conditioner automatically maintains at all seasons of the year the set temperature in interior of the car.
The recommended all-weather standard control:
– establish temperature of 22 °C and press the AUTO key.
Such control provides the most bystry creation in salon of a comfortable microclimate. To change it there is a sense only if it is dictated by own health.
The conditioner represents a kombinition of a heater, the fan and a cooler working in the automatic mode. The conditioner provides decrease in humidity and cooling of air in salon.
The conditioner completely automatically supports a uniform microclimate in interior of the car. For this purpose automatically temperature of the air arriving on stitched channels, and also its mass expense (quantity) and distribution of air streams changes. The conditioner reacts also to strong solar influence and therefore it is not required to introduce manual amendments.

In the cooling mode humidity of air in salon goes down. Thanks to it fogging of glasses is prevented.
At the high external temperature and humidity from the evaporator the condensed water can drip, forming a pool under car. It is normal and is not a depressurization sign.

The fan turns on in cold weather only after warming up of cooling liquid up to the necessary temperature. The exception makes the mode of heating of a windshield.
At sharp start-off with completely squeezed out accelerator pedal the compressor of the conditioner is switched-off for some time for realization of full capacity of the engine.
The compressor is switched-off at too high temperature of cooling liquid for ensuring normal cooling of the engine in the conditions of extreme loading.

Filter of catching of harmful substances
The filter of catching of harmful substances (consisting of the filter of catching of the weighed microparticles and the filter with absorbent carbon) substantially reduces amount of the dust which is contained in external air, pollen, gases, etc.
Change the filtering element of the filter of catching of harmful substances according to the service book for the purpose of prevention of loss of power of the conditioner.
At premature wear of the filter as a result of operation of the car in zones with strong air pollution more frequent can be required, than it is provided by the service book, replacement of the filtering element.

If arose suspicion that the conditioner is faulty, it is necessary to include the ECON mode at once and check the conditioner at the specialized enterprise.

In order to avoid falling warmly – and refrigerating capacities, and also foggings of glasses important that the air inlet before a windshield was not hammered with snow, ice or foliage.
Arriving via stitched channels and distributed then on all salon air is removed through exhaust cracks under back glass. Therefore do not close them articles of clothing, etc. things.
The conditioner works most effectively at the closed lifting and movable panel of a roof and the lifted glasses. If however air in salon heated up as a result of the long parking of the car in the sun, then lowering of glasses for a short time before turning on of the conditioner can accelerate cooling process.

1.5.3. Mode of supply of fresh air

1.5.5. Governing bodies of a konditsoner