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
 




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7-2-2-otklyuchenie-i-podklyuchenie-akkumulyatornojj-batarei-v-motornom-otseke.html

7.2.2. Shutdown and connection of the rechargeable battery in a motor compartment

ATTENTION
On cars with the Telematik system before shutdown of joint stock bank activate an operating mode of the Telematik control unit.
For the cars equipped with the radio tape recorder / radio navigational system with a protective code (only cars of other producers), consider a protective code, if necessary request it.

Shutdown
To switch off ignition.

Fig. 7.2. Removal of a cover of the rechargeable battery


If is available, shift a cover over the accumulator 1 to the right and remove it the movement of 2 (fig. 7.2) up.
Disconnect a weight wire from joint stock bank at the switched-off ignition.

Connection

Fig. 7.3. - Installation of the plug of the rechargeable battery


For a clip get a hand a polar tip of a wire of weight on a negative pole of JSB - and to tighten a nut (fig. 7.3).
If the joint stock bank is connected repeatedly, it is necessary to execute the following operations.

NOTE
If the joint stock bank is connected repeatedly, it is necessary to take care of activating the devices which are included in the car package (the radio tape recorder, radio navigational system, hours, power windows) according to the operation manual.

Deactivate an operating mode of the Telematik control unit.
Check functioning of remote radio control, if necessary, synchronize a radio code. Tell the client that the second and additional codes need also to be synchronized to provide a remote radio communication.
After repeated connection of power supply the alarm lamp of ESP dies away only through several meters of the movement.

Inhaling moment
The accumulator plug to a polar conclusion: 7,5 N · m.


7.2.1. Rechargeable battery

7.2.3. Shutdown and connection of the rechargeable battery in a luggage carrier