How do you reset the oil service light on a 2001 BMW 330xi?

Hold the odometer button down for about 5 seconds while you turn the key from off (position 0) to accessory (prosition 1). When you first turn the key, you will see "test 1", don't let go of the odometer reset button until the display changes and shows "reset". Once you see "reset", let the odometer button up, then press and hold it again for about 5 seconds until the "reset" starts flashing. Once it is flashing, let up on the odometer button then press it one more time. Now you should see a message that says "END SIA" and your oil service light should be reset.