How do you replace the battery Audi TT 2003?

To replace the battery in a 2003 Audi TT, first, ensure the vehicle is turned off and parked on a flat surface. Open the hood and locate the battery, then disconnect the negative terminal (black) followed by the positive terminal (red) to prevent any electrical shorts. Remove the battery hold-down clamp or bracket, lift out the old battery, and place the new one in the same position. Finally, reconnect the positive terminal first, then the negative terminal, and ensure everything is secure before closing the hood.