Battery is located below a slide panel under the bonnet just below the line of the windscreen in the centre. Slide to the right and battery will be exposed. There is a bolt on clamp down the side of the battery, remove this and the leads and battery can be lifted out. Caution: its a long stretch to lift the battery out of the bulkhead so i would advise getting help to lift it, you could easily hurt your back. Hope this helps
Battery under rear seat easy as ABC to change
The 2001 Audi A4 has 20 valves.
How do remove the headlights in a 2005 Audi A4?
The 2001 Audi A4 has an inline 4 engine.
The 2001 Audi A4 is a gas-powered vehicle.
The 2001 Audi A4 has a 5-speed manual.
The 2001 Audi A4 has double overhead cam (DOHC).
The height of the 2001 Audi A4 is 4 ft. 7.7 in. (55.7 in.).
The 2001 Audi A4 is 14 ft. 8.7 in. (176.7 in.) long.
The 2001 Audi A4 has 38.2 in. of front head room.
The 2001 Audi A4 has 54.7 in. of front shoulder room.
The 2001 Audi A4 has 41.3 in. of front leg room.