Audi A3

Since 1997 of release

Repair and car operation

Audi A3
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release of the fulfilled gases
- Engine electric equipment
   + System of electronic control by ignition and injection
   - Charge and start systems
      The storage battery
      Removal and installation of the storage battery
      Check of the storage battery
      The generator - the general data and security measures
      Check of the established generator
      Removal and generator installation
      Check and replacement of brushes of the generator and pressure regulator
      Starter - the general data
      Check of system of start of the engine
      Removal and starter installation
      Check, removal and installation of the traction relay of a starter
+ Manual box of a gear change
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electroschemes

Removal and installation of the storage battery


The storage battery is in an impellent compartment, behind the left headlight.

As a result of a detachment of the storage battery the data from some electronic blocks of memory, for example, from memory of malfunctions of a control system by the engine and transmissions, and also antiblocking system is erased. Before a battery detachment it is necessary to consider the data of blocks of memory on HUNDRED AUDI. If these malfunctions are shown as a result of the further movement of the car, they again register in memory.

Automatics electric Glass lifts after joining of the storage battery should become more active again.

Serially established radio receivers have so security blocking. It interferes with unapproved using the device if its power supply has been interrupted. Power supply interrupts not only at a detachment of the storage battery, and also at removal of a radio receiver or if the radio receiver safety lock has failed.

If the radio receiver is coded, before switching-off of the storage battery it is necessary to establish a radio tape recorder code. If the code is not known, the radio receiver can be included on HUNDRED AUDI, address also to subsection Input of a code of a radio receiver.

Before switching-off of the storage battery write down options of the radio transmitters written down in memory.

If it is supposed to replace the battery:

– Whenever possible, apply the modern storage battery with central газоотводом. Thus the gases formed in the batteries, are taken away through a hose.

1 – at accumulator service it is necessary to observe rules under the safety precautions, stated in the operation manual.
2 – in the accumulator there is a corroding acid and it is necessary to be careful, that acid has not spilt from the accumulator.
3 – do not use open fire about the accumulator.
4 – at work with the accumulator use goggles.
5 – hold the accumulator in a place inaccessible to children.
6 – at recycling the accumulator hand over only in the points intended for it.
7 – do not throw out the accumulator together with household dust.
8 – the gases allocated at gymnastics of the accumulator, are explosive

– If the battery with ventilated stoppers nevertheless is established, watch that stoppers have been protected by a plastic cover from water splashes.


1. Switch off ignition.
2. Open a cowl.
3. Remove a protective cover of the battery (), having opened for this purpose a clip.
4. Open a cover of the main block of safety locks () forward. For this purpose compress at the left and on the right lock laths at a cover (arrow).
5. Disconnect a negative cable of the storage battery (–) and take him aside. For this purpose ослабьте a nut–1 (a key of 10 mm).
6. Turn away a nut–2 (a key of 10 mm). Disconnect the main block of safety locks in front and behind from the battery and remove.
7. Disconnect a positive cable (+) batteries for what turn away a nut–3 (a key of 10 mm). 4 – safety locks.
8. Turn away bolts of fastening of a plate of fastening at the battery basis (the marksman on an accompanying illustration) and take out.
9. Displace the battery aside from a plate of fastening and take out. The plate is opposite to the removed holder.
10. Check up, whether ignition and all consumers of a current are switched off, if necessary switch off them.

At installation of the storage battery watch that the hose central газоотвода has not been pressed. Only so it is possible to guarantee that batteries formed at a charge gases will be taken free away through газоотводный a hose. On an illustration that battery which is established in AUDI A3 is shown not.
(The arrow on an illustration) is in hose joining protection against ignition which interferes with fire of the hydrogen allocated from the battery through газоотводный a hose. Therefore газоотводный the hose should not be deleted.

11. Insert the battery in the holder–1.


At battery installation watch that a pad of the holder of the battery (the arrow on an illustration) has entered into a groove of a basic lath–1. After that it is not necessary to displace the battery to the left or to the right.

12. The battery is established correctly if the central groove of a basic lath of the battery coincides with a carving aperture.
13. At the battery with a hose for central газоотвода watch that the hose was not pressed also nothing interfered with decontamination process.
14. At batteries without a hose for central газоотвода watch that the aperture at the top party of a cover has not been littered.
15. Establish the holder–2 on the block–4 for fastening of the battery and fix a bolt–3 moment 20 Н m (1 – a basic arm).
16. Check up reliability of installation of the battery, having moved it every which way. If the battery sits not strongly, term of its service will be reduced. Safety Besides, will decrease at blow.
17. Establish into place a heat-shielding casing if he acted in film.

Because of wrong joining of the storage battery serious damages can be caused the generator and electric devices.

18. Attach a positive cable to a positive pole (+), the moment of an inhaling 6 Н m.

Press the plug cautiously not to damage the battery case. It is impossible to grease battery poles.
The negative cable joins only after installation of the holder of safety.

19. Establish on the battery the holder of safety, thus a current carrying plate put on a bolt of fastening of the positive plug of the battery.
20. Fix a collar of a clip of the holder of safety at the battery.
21. Tighten a bolt of fastening of a current carrying plate on the positive plug (+).
22. Connect safety locks to electric wires and fix.
23. Join a multicontact socket.
24. Attach a negative cable (–) and fix the moment 6 Н•м.

Press the plug cautiously not to damage the battery case. It is impossible to grease battery poles.

25. If it is necessary program a radio receiver, thus address to subsection Input of a code of a radio receiver.
26. Establish hours.
27. Speed up automatic work electric Glass lifts.
28. Lock the car outside through a door of the driver or the forward passenger. Watch that all doors and windows have been completely closed.
29. Open the car and again close it. Thus a key hold at least 1 with in closing position.

If there is any malfunction in work electric Glass lifts, illumination in the doorway blinks.

The remark for the storage battery with ventilated stoppers
30. If it is possible, establish only the storage battery with central газоотводом.
31. At the storage battery, the type shown on an illustration, with ventilated and turned out stoppers it is necessary to establish over stoppers plastic covers for protection against water penetration, and also electrolit following and promoting corrosion.

For the battery with central газоотводом (flat stoppers turned out only by means of a screw-driver) these covers are not necessary.

Acquisition of the new storage battery

Probably, the most important, on what the buyer should pay attention, are characteristics of the accumulator. Their three. The first – rated voltage, it at all batteries identical, and it is impossible to be mistaken. At purchase it is desirable to check up the accumulator a loading plug. The second – the capacity measured in amperes/hours (А/h), means, roughly speaking, the quantity of the electric power stored in the accumulator. On capacity depends, as it is long possible to twist a starter the engine, is more exact – how many it is possible to make attempts of start of the engine. The accumulator price is almost directly proportional to its capacity. And the third characteristic – a starting current (it is measured in amperes.), i.e. a current submitted on a starter during start-up. On its accumulators can specify on four different systems: GOST (on domestic), EN (the standard of Uniform Europe), SAE (the American standard) and DIN. Last, German standard, is closest to ours STATE THAT and on the majority of the European is put "by default" i.e. when the standard system is not specified. The it is more, the faster and with большей force the starter will turn the engine.

It is better, if you buy the accumulator with those characteristics which are specified in the maintenance instruction of your car: so it will serve to you longer at the minimum expenses. It is possible to save and buy the accumulator of smaller capacity, but it will serve you less than usual term and it is bad to cope with winter start. Having bought the battery even ненамного большей capacities, you will not win in service life since constant недозаряд the accumulator will lead сульфатации plates, and will lose in money. To take a great interest in the raised starting current also does not follow: will burn a starter. Replace oil in the engine is better, and problems with start will not be.

Lately the country market is overflowed by the poor-quality goods and fakes. Accumulators are not an exception. There are some signs on which it is possible with sufficient accuracy to distinguish the original from a fake. The first and, perhaps, the main thing: on the accumulator the country-manufacturer and letting out factory should be necessarily specified, it is better, if with the address. The second – manufacturing date that is very important, if the accumulator filled in should be specified. Characteristics sheet, and here instruction presence should be applied on each battery it is unessential. It is connected by that in the west accumulators almost do not sell at retail, they are established by experts at service stations. The third – the qualitative accumulator is inconceivable without the qualitative case, good stoppers and smooth выводных the plugs quite often greased with technical protective greasing from oxidation and covered from above with colour plastic caps.

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