How to Reset the Service Light on a 2005 Audi S4

1. Turn the vehicle off and locate the center button on the right side of the instrument panel.
2. Hold the center button while switching the ignition to the “ON” position. Release the center button and wait for the instrument panel display to read “SERVICE!”.
3. Press and hold the farthest button on the right near the center button. Wait for the service indicator light to clear, and then turn off the ignition.