How to Reset an Audi Service Light

1. Look at the dash instrument cluster and notice the square digital odometer in the center of the dash. There are two buttons, one on each side of the tripometer. The one on the right has a picture of a wrench on it and the other side sets the tripometer. This procedure works on Audi A4, S4, B6 and B7 models from 2002 to present.
2. Hold the wrench button down and turn the ignition key to the 'On' position, without starting the engine.
3. Push the left '0' button and hold it until the message center states 'Service! Indicator Reset Procedure/ Service Indicator Reset Complete.' Release the buttons and turn the key to the 'Off' position.