Attention! When the battery is disconnected from the memory of some electronic control units, the registered information is deleted, for example, codes of registered malfunctions in the operation of the engine, gearbox, ABS are deleted from the memory of the self-diagnosis system. Before disconnecting the battery, it is recommended to have the stored codes read by an AUDI specialist workshop. If these malfunctions appear later, they will again be registered by the self-diagnosis system.
The power window control unit will need to be activated after connecting the battery.
The standard radio has an access code that prevents the radio from being used if the radio is stolen. The radio turns off, and the code is deleted not only when the battery is disconnected, but also when the receiver itself is removed, or when the fuse in the radio's power supply circuit blows.
Before disconnecting the battery, the passcode must be checked and noted down. Otherwise, the radio can be put into operation only with the assistance of a representative of the manufacturer or an AUDI workshop. It is also recommended to write down the radio settings of the radio station.
When replacing the battery, purchase a new ventilated battery. The gases emitted from the battery are discharged through a special hose.
When installing a battery with a vent hole in the plugs of the cells, the plugs must be closed with a protective cover to prevent splashes of electrolyte on the parts of the engine compartment.
Attention! When carrying out work on the battery, you should take precautions, guided by the warning signs on the battery case.
Read the precautions for using the battery:
- A) The electrolyte is corrosive so wear protective gloves and goggles. Do not place the battery on its side. In this case, electrolyte may leak out through the vent;
- b) Do not use open fire or smoke near the battery. If the battery is disconnected without removing it from the tray in the engine compartment, it is recommended to cover or insulate its poles as a precaution.
- V) wear safety goggles;
- G) keep children away from the battery or electrolyte;
- d) Spent batteries are to be recycled.
Attention! When the battery is being charged, explosive gas is released.
Withdrawal
1. Turn off the ignition.
2. Open and raise the hood.
3. Remove the fairing grille rubber seal in the direction indicated by the arrows in the illustration.
8.3. Remove the fairing grille rubber seal (see arrows)
4. Remove the fairing grille 1 by pushing it forward (see illustration 8.3).
5. Disconnect the wire terminal «masses» (-) from the negative pole of the battery by unscrewing the nut 1 (see illustration).
8.5. Disconnect wire terminal «masses» (-) from the negative pole of the battery by unscrewing the nut 1
6. Remove terminal 2 of the positive potential wire from the positive pole (+) (see illustration 8.5).
7. Disconnect the battery vent center hose (see arrow in illustration).
8.7. Disconnect the battery vent hose (see arrow)
8. Unscrew the bolt 3 of the clamp 2 of the battery in the tray (see illustration).
8.8. Unscrew the bolt 3 of the clamping bracket 2 securing the battery in the tray
9. Remove the bracket 2 and remove the battery 1 from the protective box (see illustration 8.8).
Installation
10. Clean the battery poles with a brass brush.
11. Make sure that the ignition is turned off, and all consumers of the on-board network are turned off.
Attention! When installing the battery, make sure that the battery vent hose is not pinched. Otherwise, gases formed during battery charging will not be vented.
In the adapter through which the vent hose is connected to the battery (see arrow in illustration 8.7), there is a device that prevents the formation of sparks and thus prevents the ignition of combustible gases formed in the battery. For this reason, the battery should not be installed without a ventilation hose and therefore without a protective device.
12. Install the battery so that the protrusion of the battery holder fits into the groove on the bottom of the battery case (see arrow in illustration).
8.12. Install the battery so that the protrusion of the battery holder fits into the groove on the bottom of the battery case (see arrow)
13. Make sure that the hole on the bottom of the battery case is opposite the hole for the mounting bolt (see arrows in illustration). In this case, the battery is fixed in the tray and will not move.
8.13. Make sure the hole on the bottom of the battery case is in line with the mounting bolt hole (see arrows)
14. Make sure the battery is firmly seated in the tray and will not move even if you try to move it.
15. Install clamping bracket 2 and secure it with bolt 3, tightening it with a force of 22 Nm (see illustration 8.8).
Attention! If the battery is connected incorrectly, the generator and the electrical system as a whole can be damaged.
16. Connect the positive wire terminal of the positive (+) potential and tighten the nut to 7.5 Nm.
Attention! Do not lubricate the terminals, and do not try to put the terminal on the pole with force. This may damage the battery case.
17. Connect to the negative pole of the battery (-) wire terminal «masses» (-) and tighten its clamping nut to 7.5 Nm.
Attention! Before starting the engine for the first time after installing the battery, turn on the ignition for about 10 seconds. This will activate the engine control unit.
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