Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
- Current leaving and service
   Schedule of routine maintenance
   General information on control
   Check of levels of liquids, control of leaks
   Check of a condition of tires and pressure in them
   Replacement of impellent oil and oil filter
   Check of a gear belt of a drive of GRM on existence of damages, wear measurement
   Check of brake system
   Check of fuel system
   Rotation and replacement of wheels. Antisliding chains
   Check of a condition and replacement of hoses of an impellent compartment, localization of leaks
   Check of functioning of system of cooling
   Check of a condition of system of production of the fulfilled gases
   Visual check of tightness of a box of gear shifting
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Greasing of clamps of doors and lock cylinder
   Condition check, adjustment and replacement of brushes of screen wipers
   Visual control of a seat belt and safety cushion block
   Check of a condition of the battery, care of it and charging
   Check of level of the RKPP transmission oil
   Replacement of the filter of air of salon
   Replacement of a filtering element of the air filter
   Replacement of brake liquid
   Check and replacement of spark plugs
   Replacement of the fuel filter of the diesel engine
   Check of level of liquid of system of hydrostrengthening of a wheel
   Check of level of liquid of the main transfer of automatic transmission
   Oil replacement in coupling of Haldex of models with a full drive
   Check of a condition of driving ridge belts
   Check of level of the AT transmission liquid
+ Engine
+ Systems of cooling, heating
+ the Power supply system and production of the fulfilled gases
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Check of a condition of the battery, care of it and charging


Tools and materials necessary for care of battery

1 obverse guards/goggles – at removal by a brush of traces of corrosion of a particle of crystallizing acid easily can get to eyes
2 baking soda – water solution of baking soda can be used for corrosion neutralization
3 acid-free vaseline – put on battery plugs a layer of vaseline will help to avoid their corrosion
4 adaptation for cleaning of plugs/tips of wires – such adaptation with a wire brush will remove all traces of corrosion from plugs of the battery and tips of wires
5 impregnated felt washers – installation of such washers on
each plug of the battery directly under tips of wires will help to avoid corrosion
6 stripper – sometimes appears to be removed tips of wires very difficult from battery plugs, even after complete weakening of nuts/bolts. This tool will help to remove tips vertically up without damages
7 adaptation for cleaning of plugs/tips of wires – one more type of the smoothing-out tool, slightly changed option of point 4 which is carrying out the same functions
8 rubber gloves – one more means of protection at work with the battery; remember that in the battery there is an acid!

Box of safety locks on the storage battery

1 plug “–”
2 nut
3 bolt of fastening of a positive cable, it is not necessary to turn on
4 safety locks

Check and leaving

At work with the battery it is necessary to undertake certain security measures. At battery banks always there is extremely an inflammable hydrogen therefore at all do not allow approach to the battery with the lit cigaret or other types of open fire. The electrolit of the battery represents solution of sulfuric acid which at hit in eyes or on open sites of a body causes serious traumas. Besides, acid corrodes clothes and paints. At battery shutdown always the first disconnect a negative wire, and connect it in the last turn!

1. Care of the battery is very important procedure, allowing to avoid stops in a way because of its discharge. Performance of procedure of service needs some tools.
2. Before the beginning of procedure of service always at first switch off the engine and disconnect all electrodevices, then disconnect a negative wire from the battery.


If the radio receiver of your car is equipped with system of protection against theft, make sure that you gathered the correct code before a battery detachment.

3. Usually AUDI cars are equipped with the batteries which are not demanding special leaving. It is possible to remove covers a banok and to add the distilled water. Latest models can be equipped with the batteries which not are not demanding leaving which are completely sealed.
4. Average jams are closed by the main block of safety locks. For removal of the block of safety locks it is necessary to disconnect a cable of weight of the storage battery (-).


Thus, the memories given in electronic blocks, such as, a radio receiver code are erased. Read instructions in subsection Input of a code of a radio receiver.

5. Turn out a six-sided nut-2-and release a corner of the block of the main safety locks from a casing of the storage battery.
6. Remove covers and check electrolit level in each of a battery banok. It should be above plates. Usually on everyone bank there is a level index. If level of electrolit is lower than norm, add only the distilled water and then close covers a banok.


Overflow can lead a banok to electrolit transfusion during the accelerated charging that will cause corrosion and damage of the components next to the battery.

7. If the positive plug and a collar of a wire of the battery of your car are equipped with a rubber protector, make sure that it is not torn and not damaged. It should close the plug completely.
8. It is necessary to examine periodically an external condition of the battery on existence of such damages, as cracks in the case.
9. Check reliability of a tightening of collars of wires of the battery, providing good electric connection. Check each of wires on all length on existence of cracks and attritions of isolation and wires.
Corrosion of plugs of the battery is usually shown in the form of an easy, friable powder
The wire detachment from the battery plug by means of a key - sometimes when corrosion destroyed a nut, for this procedure is required special flat-nose pliers (always the first disconnect and the last connect a weight wire!)
Irrespective of adaptation type for cleaning by result always there should be a pure, brilliant surface of the plug
When cleaning tips of wires it is necessary to remove all traces of corrosion (the internal part of a tip has a konusnost repeating a form of the plug of the battery therefore do not remove too much material)
10. At detection of traces of corrosion (usually representing a friable raid of white color) disconnect wires from plugs, smooth out them a special brush and again connect. Emergence of corrosion can be minimized by installation of specially processed washers which are available on sale in shops of auto parts, or by drawing on plugs and collars of wires of a layer of acid-free vaseline or suitable greasing after their connection.
11. Make sure that the pallet of the battery is in a satisfactory condition, and the bolt of a fixing collar is reliably tightened. If the battery acted in film from the pallet, track, that in an installation time on it details or other extraneous subjects did not lie. At a latching of a fixing collar do not tighten its bolt too hardly.
12. Corrosion traces from the pallet, cases of the battery and surrounding surfaces can be removed by means of water solution of baking soda. Put a mix with a small brush, let's to it stand and then wash away plentiful quantity at its finest.
13. The metal surfaces of the car which have undergone corrosion, it is necessary to cover with a first coat on a zinc basis and then to paint.


Producers recommend to remove the battery from the car for its charging since the gas which is allocating during this procedure, can damage the painted surfaces or a car interior, depending on a battery arrangement. The fast charging with the connected wires of the battery can lead to damages of electric system of the car.

14. Remove all covers about a battery banok (if they are available) and close openings pure rags to prevent an electrolit spillage. Disconnect a negative wire of the battery and connect charger wires to its plugs (positive to positive, negative to negative), then turn on the charger in a network. If it has the switch, make sure that it is established in situation of “12 volts”.


If the radio receiver of your car is equipped with system of protection against theft, make sure that you gathered the correct code before a battery detachment.

15. If you use the charger with a current more than two amperes, regularly check the battery during a charging to make sure that it did not overheat. Using the slow charger, you can quietly leave the battery to be charged on all night long after regular check within the first two hours. At a charging of the batteries which are not demanding leaving, certain precautionary measures (for example, use of very nizkoamperny charger) can be demanded. On such battery can be precautionary шильдик but if it is not present address for consultation in representation office of AUDI or to the electrician of a repair truck.
16. If banks of the battery have the demountable covers, each hour within the last several hours of a charging cycle check electrolit density by means of the areometer. Inexpensive areometers are available on sale in shops of auto parts - at their application follow enclosed instructions. It is possible to consider the battery charged if within two hours indicators of density of its electrolit do not change, and the electrolit in banks freely bubbles. The electrolit density in separate banks should be almost identical. If this not so, means, one or several banok of the battery failed and it is necessary to replace them.
17. Some batteries not demanding leaving have above built-in areometer having a window - the color indicator of degree of a charging of the battery. The usually brightly painted window means that the battery is completely charged, and dark color testifies to need of an additional charging. More exact data are given in the instruction of the manufacturer of the battery.
18. If the battery is sealed and has no built-in areometer, you can check charging degree by means of connected to plugs of the battery of the digital voltmeter. Completely charged battery will show 12.6 and more than a volts.