How to Reset the Service Light on an Audi A4

To reset the service light on a 2009 Audi A4, follow these steps: Ensure the car is off: Before starting, make sure the engine is off and the keys are removed from the ignition. Locate the "0.0" button on the dashboard: In the 2009 Audi A4, the reset button for the service light is usually marked with "0.0". It is typically located on the dashboard, near the tachometer or speedometer.

It should be a small button or switch. Turn on the car (without starting the engine): Press and hold the "0.0" button, then turn on the car without starting the engine.

This is the position where the dashboard lights come on, but the engine is not running. Display the "SERVICE" message: While holding the "0.0" button and with the car on, the dashboard display should show a message like "SERVICE" or "INSP" along with a service due indicator.

Reset the light: Now, repeatedly press the "0.0" button until the "SERVICE" or "INSP" message starts to flash. At this point, release the button.

Reset the service counter: Press the "0.0" button again and hold it for a few seconds until the counter returns to 0.0 and the service message flashes again. Light reset: The service light has been successfully reset when the "SERVICE" or "INSP" message stops flashing and returns to the normal dashboard display.

Turn off the car: Finally, turn off the car and restart it normally. The service light should be reset and should not appear again on the dashboard.