Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.2. Power supply system
7.2.1. Rechargeable battery
7.2.2. Shutdown and connection of the rechargeable battery in a motor compartment
7.2.3. Shutdown and connection of the rechargeable battery in a luggage carrier
7.2.4. Removal and installation of the rechargeable battery in a motor compartment
7.2.5. Removal and installation of the rechargeable battery in a luggage carrier
7.2.6. Check of reliability of fastening of joint stock bank
7.2.7. Accumulators with "a magic eye"
7.2.8. Rest voltage measurement
7.2.9. Check of level of electrolyte – joint stock bank with traffic jams
7.2.10. Check of density of electrolyte in all sections – joint stock bank with traffic jams
7.2.11. Voltage measurement under loading
7.2.12. Charging of the rechargeable battery
7.2.13. Strongly discharged joint stock banks
7.2.14. Bystry accumulator charging
7.3. Generator
7.4. Starter
7.5. Relay blocks, sockets and safety locks
8. Body
9. Schemes of electric equipment
 







7-2-7-akkumulyatory-s-magicheskim-glazom.html

7.2.7. Accumulators with "a magic eye"

Fig. 7.12. "A magic eye" of joint stock bank


"A magic eye" gives the chance of obtaining information on the level of electrolyte and about the level of charging of the checked accumulator (fig. 7.12).
Three various color indications are possible.


NOTE
It is necessary to consider that if the joint stock bank is more senior than 5 years and the color indicator of "a magic eye" is decoloured, then the accumulator should be replaced new.

NOTE
At recharge of the accumulator, and also during movement under "a magic eye" vials of air can be formed. They distort indications of the color indicator of "a magic eye".

Procedure for test
If accumulators are for technical reasons equipped with traffic jams, then these traffic jams are stuck with a polymeric film.
Before carrying out control survey it is necessary to knock slightly and carefully the screw-driver handle on "a magic eye" – at the same time vials of air disappear.
Consider indications of the color indicator of "a magic eye".

Control survey of the rechargeable battery
Before carrying out measurements, for example, tension of current of rest, density of electrolyte or check of the accumulator under loading, it is necessary to perform control inspection of the accumulator.
If the case of the accumulator is damaged – because of damage of the case possibly an electrolyte effluence.
If polar conclusions of the accumulator (conclusions of joint stock bank) are damaged – because of damage of polar conclusions of the accumulator the contact of connections of cables is not provided. Thereof there can be an ignition of a cable and occur failure in electric equipment.
If its original traffic jams are twisted in the accumulator – traffic jams have to be supplied with a sealing ring. At loss or damage it is allowed to use only original traffic jams of the same design.


7.2.6. Check of reliability of fastening of joint stock bank

7.2.8. Rest voltage measurement