Audi A3

since 1997 of release

Repair and car operation



Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ the Power supply system and production of the fulfilled gases
- Engine electric equipment
   + System of electronic control by ignition and injection
   - Charge and start systems
      Storage battery
      Removal and installation of the storage battery
      Check of the storage battery
      The generator - general information and security measures
      Check of the established generator
      Removal and generator installation
      Check and replacement of brushes of the generator and tension regulator
      Starter - general information
      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 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









38a8de3e


Check of the storage battery

GENERAL INFORMATION

Check of level of electrolit

The distilled water can be necessary for carrying out work.

Serial storage batteries once the filled-in electrolit, under usual conditions, have enough on all service life of the battery. Nevertheless, at high external temperatures and after a battery charging, and also at carrying out maintenance it is necessary to check electrolit level.

PERFORMANCE ORDER
1. The storage battery is in an impellent compartment. Open a battery casing, having opened clips, and press a casing down.
2. Check outside electrolit level via the transparent case of the battery. If in one of sections level of electrolit fell below MIN marking, turn out a stopper.
ATTENTION

If it is impossible to define level of electrolit, turn out a stopper and glance in the battery. Do not use thus open fire. There is a danger of explosion!


3. Average jams are closed by the block of safety locks. To remove the block, compress levels and cast away a cover.
4. Disconnect a negative cable (–) the storage battery at the switched-off ignition.

ATTENTION

Thereof information from electronic blocks of memory, as, for example, a radio receiver code is erased. Without a code the radio receiver can be included only by the manufacturer or in conditions HUNDRED AUDIS. Therefore familiarize with remarks in the subsection Removal and installation of the storage battery.


5. Thereof information from electronic blocks of memory, as, for example, a radio receiver code is erased. Without a code the radio receiver can be included only by the manufacturer or in conditions HUNDRED AUDIS. Therefore familiarize with remarks in the subsection Removal and installation of the storage battery.
6. Fill with the distilled water each section separately to a mark the MOVE.
7. Screw and tighten a stopper.
8. Insert into place the main block of safety locks and fix it a nut–2–.
9. In summary charge the battery, thus address to subsection Check of a condition of the battery, care of it and a charging.
10. At suspicion on malfunction of the battery measure tension of rest, thus address to below-mentioned subsection.
11. Attach a negative cable (–) to the battery.
ATTENTION

Make active automatic equipment of safety of electric window regulators, enter a radio tape recorder code, establish hours, thus address to the section Automatic transmission and models with a full drive.


12. Fix clips a casing of the storage battery.

Check of fastening of plugs of the storage battery and holder


ATTENTION

If the storage battery is badly fixed or plugs are not fixed, premature failure of the battery because of vibration, ignition of cables or malfunction in electric equipment work can become a consequence. As at not attached batteries are erased the memories given of electronic blocks, for example, a radio receiver, familiarize with the subsection Removal and installation of the storage battery and subsection Input of a code of a radio receiver.


PERFORMANCE ORDER
1. Move plugs of the storage battery in different directions and check reliability of their fastening, if necessary tighten.
2. If the storage battery is badly fixed, tighten a bolt of fastening the moment of 20 N of m.

Check of tension of rest

The condition of the storage battery is checked by tension measurement by the voltmeter which is switched on between poles of the battery.

PERFORMANCE ORDER
1. Disconnect the storage battery, thus address to the subsection Removal and installation of the storage battery.
2. In 2 hours before check the battery should be disconnected.
3. Attach the voltmeter to plugs of the battery and measure tension.
4. Assessment of size of tension:

12.5 In or more – the battery in a good condition
12.4 In or less – the battery in bad condition, it it is necessary to charge or replace with the new.
5. Attach a negative cable (–).
ATTENTION

Make active automatic equipment of electric window regulators, and also establish hours and enter a radio receiver code, thus address to the subsection Removal and installation of the storage battery and подразделуВвод a radio receiver code.


Check of the storage battery under loading

PERFORMANCE ORDER
1. Attach to battery plugs the voltmeter.
2. Start the engine and check tension.
3. At the moment of engine start at completely charged batteries tension should not fall below 10 In (at electrolit temperature near +20°С).
4. If tension sharply falls and the electrolit density in various sections is various, the battery is damaged and it is necessary to replace it.

Check of density of electrolit

The electrolit density in a combination to tension gives exact idea of a condition of a charge of the battery. For check of density of electrolit serves денсиметр. At battery check the temperature of electrolit should be not less +10°С.

PERFORMANCE ORDER
1. Switch off ignition.
2. Turn out from the battery all jams. If there is a roof, remove it at first a screw-driver.
3. Insert денсиметр into one of sections of the battery and gather quantity of electrolit, sufficient for float emersion. The more specific weight (density) of electrolit, the emerges a float more. On a scale it is possible to consider electrolit density in terms of specific weight (g/ml) or in degrees to Boma (+ °Ве).
4. The density of electrolit should be not less than 1.24 g/ml – address to Specifications. If low, the battery it is necessary to charge density.
5. Check one after another each section. All sections should have identical density (the greatest difference of 0.04 g/ml). If the difference is more, the battery is faulty.

Charging of the storage battery


ATTENTION

Before a charge of the storage battery familiarize with remarks on the security measures given in the subsection Removal and installation of the storage battery.


PERFORMANCE ORDER
1. Do not disconnect the storage battery at the working engine.
2. Never close the battery накоротко, i.e. do not connect positive (+) and negative poles (–). Thus the battery is warmed up and can burst.
3. Do not use near the battery an open flame. The electrolit is poisonous. Do not allow its hit in eyes, on skin and on clothes. Otherwise plentifully wash out electrolit water.
4. At the battery with central gazootvody, at a charge, a stopper (crosswise shlitsa) do not turn out.
5. Before a charging of the frozen battery let's to it thaw. The charged battery freezes at temperature near 65°С, the semi-charged battery at temperature near 30°С and discharged at temperature near 12°С. After thawing the battery check on existence of cracks. If necessary replace.
6. At a battery charge the normal charger or the device with the accelerated charging remove the battery. At least, disconnect the negative (–) and a positive cable (+).

At use of the portable charger (a small current) the charging can be carried out without battery removal. A connecting cable to an onboard network to disconnect thus it is not required. It is necessary, naturally to consider data of the manufacturer of the battery.

Charging

PERFORMANCE ORDER
1. Remove the storage battery.
2. Check electrolit level. If necessary add the distilled water, thus address to appropriate section.
3. A charge of the battery make only in well aired room or in the open air. At a battery charge without its removal from the car open a cowl.
4. Check, whether the gazootvodny hose is pressed and whether the gazootvodny branch pipe is littered.
5. If on the device for a fast charge it is possible to regulate a current, establish the charge current, equal 10 % of capacity of the battery, i.e. at capacity of 50 Ach establish a current about 5 A.Vremeys of a charge it is possible to accept равным10 hour.
6. At the switched-off device for a charge attach a positive cable (+) devices to a positive pole (+) batteries. A negative cable (–) devices connect to a negative pole of the battery (–).
7. Insert the network tip of the device for a charge into the socket. If it is necessary, turn on the device.
8. If the battery is charged by a direct current, check battery temperature, having put on it a palm. The electrolit temperature during a charge should not exceed +55°С. Otherwise interrupt process of a charging or lower a charging current.
9. After the termination of a charge switch off the device (if it is possible) and disconnect the network tip of the charger.
10. Disconnect a charger cable from the storage battery.
11. Check a battery charge, thus address to subsection Check of a condition of the battery, care of it and a charging.
12. Establish the battery into place, thus address to appropriate section.

Remarks for the storage battery with jams

PERFORMANCE ORDER
1. Before a charge turn out from the battery of a stopper or a narrow screw-driver uncover and slightly close it openings. Thus, the electrolit razbryzgivaniye owing to formation of gases will be excluded.
2. A charge make until from all sections gas, and tension and electrolit density will not go plentifully during three measurements following one after another during three hours, will not change.
3. After end of a charge of the battery let's to it leave to gases within 20 minutes. Then close jams.

Charging of strongly discharged and sulfatirovanny storage battery

The storage battery, long time not used (for example, at long parking of the car), is discharged and сульфатируется over time. If tension of idling of the battery lies below 11.6 In, the battery is considered strongly discharged. Check tension of rest. At strongly discharged battery of electrolits consists almost of one water.
ATTENTION

At negative temperature such battery can freeze, and the case of the battery to burst.
Strongly discharged battery сульфатируется, i.e. on a surface of electrodes large low-soluble crystals of sulphurous lead are formed. The electrolit thus loses transparency and gets weak white coloring.
If strongly discharged battery is charged directly after the category, the sulfatatsiya occurs again. Otherwise plates of the battery continue to harden and possibility of a charge of the battery for a long time remains limited.
Strongly discharged and sulfitirovanny battery should be charged by the lowered current about 5 %, i.e. at, for example, capacity of the battery 60 of Ach force of a charging current should make 3 And.
Tension of a charge should make no more than 14.4 Century.
By no means it is impossible to charge strongly discharged battery the device for a fast charge.



The fast charging/the help at start

PERFORMANCE ORDER
1. The device for a fast charge charge the battery only for ensuring start of the car. Thus force of a charging current makes 20 % and more from battery capacity. Thus the battery is damaged, since is exposed to influence of big currents. Time not used and strongly discharged battery is long it is not necessary to charge the device for a fast charge since it leads to a sulfatatsiya.
Storage of the storage battery
2. If the car was not used more than two months, the storage battery is necessary for removing and charging. The optimum temperature of storage of the battery makes from 0 to +27°С. At these temperatures the battery self-category the minimum. To charge the battery it is necessary not less often than once in two months, differently it becomes unfit for use.

The battery which was not used a long time (for example, it was not maintained the car), is discharged and, besides, can сульфатироваться. If such battery is charged by the device for a fast charge, she does not perceive a charging current or owing to a sulfatatsiya becomes too quickly "completely" charged. Actually the battery is damaged.

Before defining the battery as damaged, it is necessary to check the following:
3. Electrolit density. If the difference between density in separate sections does not exceed 0.04 g/ml, it is necessary to charge the battery the normal charger.
4. After a charge check the battery under loading. If characteristics of the battery are lower given in Specifications, the battery is damaged.
5. If the electrolit density in one or in two next sections considerably differs (for example, in five sections of 1.16 g/ml, and in the sixth 1.08 g/ml) the battery has short circuit and it is necessary to replace it.