Audi A2 (8Z) battery replacement
Model years: 1999 - 2005
Car battery is one of the basic components in vehicle's electrical system. In principle, it is a container for electricity, which is a driving force for electric-powered mechanisms inside the car. So, it's important, that the battery is maintained in a properly operating condition. Notwithstanding, battery is an expiring unit and will run dry after a period of time irreversibly. In other words, chemical processes inside the battery will terminate, resulting in no electrical energy created. Battery's lifespan roughly lasts 3 - 5 years, after which it becomes incapable of being charged. This is the time, when new battery installation is needed. It could be, that battery will experience loss of electricity, due to soiled connection points. After a certain period of time, battery terminals can get covered by white powder (corrosion), what explains bad connection contacts. This is the reason why the battery cannot be re-charged by alternator. Finally, it will run flat and become useless in providing electric energy. Eliminating soil from cable and battery connections, might recover the battery to its original state and prepare it ready to be used again. The battery might also become exhausted, if the vehicle was left unused for some time. In such case, recharging the battery will likely recover its efficiency. To initiate a recharge, you will need a battery charger.
Audi A2 battery location: luggage compartment (trunk) under floor carpet.
Recommended batteries for Audi A2:
* Note: if case more than one battery type is applicable for your model, compare parameters of the battery, currently installed on your vehicle, with parameters in the table below, before choosing the right one.
| Body type | Model | Battery specs | Buy |
|---|---|---|---|
| Five-door hatchback | 1.2 TDI 1.4 1.4 TDI 1.6 FSI | Capacity: 72Ah Cold Cranking Amp: 680cca Dimensions: 278x175x175 mm | £98.16 (Amazon.co.uk) |
Capacity: 80Ah Cold Cranking Amp: 720cca Dimensions: 315x175x175 mm | £72.99 (Amazon.co.uk) |
How to replace car battery:
1.
Before battery replacement, make sure:
- you wear sturdy gloves and safety goggles
- vehicle keys are out of ignition switch
2.
The following tools are usually enough for battery replacement procedure:
- 10 and 13 mm wrenches or sockets
- Flat-head and Phillips type screw drivers
3. Audi A2 battery is located in luggage compartment (trunk) under floor carpet.
4.
To start replacing battery, remove the old one by disconnecting the negative connection first. This will prevent accidental short-circuits between positive battery terminal and the body of the vehicle. Make sure the cable does not come into contact with battery terminals during battery replacement procedure. Negative battery terminal can be identified by minus (-) sign next to it (1):
5.
To move cable connector away from negative terminal (1), release nut:
6.
Open positive terminal cover (1):
7.
Disconnect positive connector (1), by releasing the nut:
8.
If present, disconnect ventilation hose from the battery (1). Some vehicles utilize battery ventilation system to vent formed gasses (hydrogen) to the outside.
9.
Remove brackets that hold the battery attached to the vehicle frame.
10.
Vacate battery compartment by lifting the old battery off (note, that the battery is heavy, incorrect lifting can result in back injuries):
11.
Do not remove plastic terminal caps from new battery, until it's placed in the battery compartment inside the vehicle.
12.
Place the new battery in.
13.
Connect ventilation hose.
14.
If necessary, clean battery cables from dirt or rust before connecting, to ensure excellent contact.
15.
Contrary to disconnecting the battery, connect cables, starting with positive terminal first.
16.
Re-attach brackets and make sure battery does not make any movements.
17.
Dispose the old battery only at authorized collecting point.
