Heres a breakdown of where you can find the battery in different models: Audi A4 B5 (1994-2001): Usually found under the hood, close to the windshield. Audi A4 B6 (2000-2006): Located in the engine bay, just beneath a black cover close to the windshield. Audi A4 B7 (2004-2008): Typically placed in the trunk, under the spare tire.
Inthe video, 1A Auto shows how to remove, install, or replace a old, dead battery. The video is applicable to the 05, 06, 07, 08 Audi A4🔧 List of tools us

Takea battery reading with the engine off, start the engine and take another reading. A healthy lead acid car battery should be around 12.5 volts at rest. You should be seeing around 14.5-ish volts with the engine running right after a start. It will drop down to the low 14's after 15-20 minutes as the battery recovers.

Inorder to replace it, follow the steps: Step 1: On the back of the key press the button (marked A) and at the same time pull the key blade out of the fob. Step 2: On the front side of the key press the button (markerd arrow and B) and at the same time pull battery. Step 3: You’ll now see the battery. Remove the old battery, making note of
Thisarticle applies to the Audi A4 B7/B8 (2005-2015). Child safety lock location. Step 2 – Test the key fob. Check the battery of the fob – try to lock and unlock the door from varying distances. If you notice that, despite being not terribly far away from the car, it is not reacting to the queue to lock/unlock the vehicle, then it . 393 360 417 250 84 113 170 87

2010 audi a4 battery location