Repair and service Audi A8 in body D2 with 1994 for 1999 of release.
1. Car operation
2. Maintenance service
3. Petrol engines of 2,8 l
4. Petrol engines of 3,7 and 4,2 l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of release of the fulfilled gases of cars with petrol engines
9. The power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of release of the fulfilled gases of cars with diesel engines
12. Greasing system
13. Cooling system
14. Coupling
15. A transmission
16. Shaft of a drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
22. A body
23. Heating and air-conditioning system
24. An electric equipment
24.1. The general data
24.2. Electric chains
24.3. Safety locks
24.4. Electronic blocks in a motor compartment
24.5. Electronic blocks in a niche for feet of the passenger
24.6. The block of fuses in a niche for feet of the passenger
24.7. The relay block in a niche for feet of the driver
24.8. An additional arm of the relay in a luggage space
24.9. The storage battery
24.10. The generator
24.11. System of start-up of the engine
24.12. A starter
24.13. Headlights
24.14. Replacement of lamps of external illumination
24.15. A lamp of a passing light and / or an antifog lamp
24.16. A lamp of a headlight of headlights
24.17. Adjustment of light of headlights
24.18. The forward index of turn
24.19. The lateral repeater of turn
24.20. Lamps of a back lantern in a wing
24.21. A back lantern in a wing
24.22. Lamps of a back lantern in a luggage carrier cover
24.23. A back lantern in a luggage carrier cover
24.24. The top stoplight
24.25. A forward lantern of illumination of salon
24.26. A combination of devices
24.27. Switches of a steering column
24.28. The cylinder of the lock of ignition
24.29. The ignition lock
24.30. Switches of the central section of the panel of devices
24.31. The switch of a heater of a back seat
24.32. The switch of adjustment of position of a mirror
24.33. Forward switches windows
24.34. Back switches windows
24.35. A radio receiver
24.36. Dynamics of a forward door
24.37. Dynamics of a back door
24.38. Dynamics of a back shelf
24.39. Check of a heater of back glass
25. Electric schemes


24.9. The storage battery

The storage battery is located in the right back part of a luggage carrier, under the floor panel.
At a detachment of plugs of the battery in blocks of memory of control means the data about the written down malfunctions is erased, therefore before a detachment of plugs it is recommended to address in a specialised workshop for a call from memory of the malfunctions written down in it. After connection of the plug of the accumulator it is necessary to activate and reprogram glass lifts with an electric drive, and also position of rear-view mirrors and seats.
If in the car the radio receiver with a code before a detachment of plugs from the storage battery, check up is established, whether there is at you a code for repeated activation of the receiver. Otherwise to place a radio receiver in operation it will be possible only in a specialised workshop.
The new storage battery should be equipped by system of tap of the gases formed at work of the battery.

Rules of care of the storage battery
To keep high working capacity of the storage battery for a long time, it is necessary:
– At the idle engine to switch off all electric devices in the car;
– To disconnect a wire from the negative plug of the storage battery;
– Each 15–20 days (through 2500 km of run) to clear the storage battery of a dirt in order to avoid its self-discharge. With the same purpose it is necessary to eliminate begin to flow electrolits and to isolate from the case a fixing framework;
– The storage battery should be reliably fixed on the car. Watch that tips of wires have been strongly fixed on plugs of the storage battery, explosion otherwise is possible;
– The storage battery can continuously work in стартерном a mode no more than 15 with; the break between cycles should ' make not less than 60 with;
– Periodically to check the voltmeter the pressure developed by the generator. Indications are necessary for removing directly on plugs of the storage battery at the working, heated-up engine. The pressure size should be within 13,8–14,5 In;
– On served storage batteries it is desirable to check level and electrolit density through each 3000 km. Electrolit level is checked on a special mark in transparent cases or by means of a special glass tube in opaque cases. The electrolit should close an upper edge of plates on 10–15 mm. The electrolit density is checked ареометром. If the density below 1,23 g/sm3 in the winter and 1,19 g/sm3 in the summer, is necessary additional charge; – even if the generator and a pressure regulator are serviceable, and electrolit level in norm, additional charge with the help charger devices is necessary once a month in the winter and each six months in other season; – the accumulator filled in with electrolit can be stored only completely charged, thus the electrolit density should be checked once a month.

Good advice
Gymnastics of the storage battery spend a current which force makes 0,1 nominal capacities. For example, the battery in capacity 50 А/ч is necessary for charging a current force 5 And at the unscrewed stoppers of bulk apertures. It is not necessary to fill in in the battery of electrolits in density more than 1,28/sm3 Trying to increase thus a starting current, it is possible to put for a short time interval the battery out of action. For the same reason to lead up level of electrolit to norm it is possible only the distilled water. In the opaque served battery electrolit level can be measured by means of a hollow glass tubule, having closed its one end a finger. In taken "test" the height of a column of a liquid in a tube will correspond to height of excess of level of electrolit over an upper edge of plates. To remove begin to flow electrolits or to neutralise electrolit influence on surrounding subjects it is possible by means of 10 %-s' solutions of liquid ammonia or soda. Operation of the discharged battery, especially is not supposed in the winter. In the discharged battery too high maintenance of water in electrolit, it can freeze and put out of action the battery case. Do not try to charge the frozen storage battery a current of the big force or to start up the car from an extraneous source. Allow to the battery to thaw, and then try to restore its work as gymnastics as a current of small force. Such battery still can serve. The crack in bank of a served accumulator room of the battery not always demands its replacement. Pour out electrolit, dry up, wash out gasoline a crack and process its file. The sawdust formed at cutting of a crack, mix with эпоксидным glue or шпаклевкой. With the received structure carefully cover a crack. After such procedure of electrolits fill in not earlier than in 24 hours.

Check of the storage battery
Check electrolit density in the storage battery every 3 month.
Check is spent ареометром. At definition of density of electrolit it is necessary to consider its temperature. At electrolit temperature more low 15 С on everyone 10 С below this temperature from the measured density subtract value 0,007; from above 15 C add 0,007.

The electrolit density in the storage battery should be in following limits:                                                         

Temperature, С

Above 25
More low 25
Completely charged
Charged on 70 %
The discharged

Electrolit density measure in everyone bank. The difference in density 0,04 or more between two any banks specifies in loss of electrolit or сульфатацию plates.
If the electrolit density between two any banks differs more than on 0,04, it is necessary to replace the storage battery. If below demanded, but identical in all banks, the battery it is necessary to charge density of electrolit.
Working capacity of the unattended storage battery can be checked up only the voltmeter. Degree заряженности batteries with the built in indicator is defined on colour of the indicator. Green colour of the indicator corresponds to full gymnastics, black – specifies in necessity of gymnastics, dark blue – testifies to low level of electrolit in the battery.

Gymnastics of the storage battery
Before gymnastics remove the storage battery from the car.
For gymnastics use зарядным or the zarjadno-starting arrangement. Charge the battery a current equal of 0,1 capacities of the battery until the electrolit density will not raise within 4 hours.
Use of a current of the big force for fast gymnastics of the storage battery as in this case accumulator plates can warp because of an overheat is not recommended.
During gymnastics of the battery the electrolit temperature should not exceed 37,8 С.

Removal of the storage battery

Fig. 18–11. Elements of fastening and accumulator connection: 1 – the negative plug; 2 – the positive plug; 3 – a bolt of fastening of an arm; 4 – a hose of tap of gases

Switch off ignition. Remove the right lateral decorative panel and the trunk floor panel. Disconnect the tyre of grounding of the storage battery, located in the floor panel. Remove the negative plug 1 from the storage battery and move it aside (fig. 18–11).
Disconnect from the storage battery a hose 4 for tap of gases.
Turn away a bolt 3 and remove an arm of fastening of the storage battery.
Remove the battery from the car.

Installation is spent to sequences, return to removal, taking into account the following.
At installation do not press a hose intended for tap of gases, allocated at work of the storage battery. In the pipeline of tap of gases there is a valve which protects the battery from return flash.
Fix the storage battery an arm and screw in a bolt of its fastening, having tightened the moment 20 Нм.
Check up reliability of fastening of the storage battery, otherwise battery service life it can be reduced.
Connect to the battery at first the positive plug, then negative and fix plugs, having tightened nuts of fastening by the moment 5 Нм.
Include a radio receiver and enter into it a code.
Lift glasses electric glass lifts upwards against the stop. Then press all switches стеклоподъемника once again, at least for 1 second, in position of closing for activation of the block of management glass lifts.
Establish time for hours.

Gymnastics system
If the control lamp of gymnastics of the battery does not burn at ignition inclusion, check up reliability of connection of wires to the generator, serviceability of a control lamp and an integrity of its chain. If the lamp still does not burn, check up an electric chain from the generator to a lamp. If all electric chains are serviceable, means, the generator is faulty and it should be replaced or repaired.
If the control lamp of gymnastics of the battery burns at engine work, stop the engine and check up a condition and a tension driving a generator belt, and also connection of wires to the generator.
The pressure regulator can be checked up as follows.
Connect the voltmeter to the storage battery and start up the engine.
Increase frequency of rotation before stabilisation of indications of the voltmeter which should show 12–13 In, but no more than 14 Century
Include a maximum quantity of consumers of the electric power (a headlight, a heater of back glass, the heater fan). Thus the pressure developed by the generator with a regulator of pressure, should make 13–14 Century
If pressure does not correspond to these values, the worn out brushes of the generator, weak springs of brushes, faulty a regulator of pressure or the diode, winding breakage статора or defective contact rings of a rotor can be a cause of defect.

24.8. An additional arm of the relay in a luggage space

24.10. The generator