Here's the exact steps that worked, mine's a June 08 Model.
Just changed my oil today.
1. Switch Key to I position and quickly double tap the left cluster button to display the flashing wrench.
2. Switch Key to O position, hold down left cluster button, switch Key to I for a sec, then start the car while keeping the cluster button held down until you see a double wrench icon (wrench will not flash indicating a reset). Done!