Greatness! So good to hear.I recently purchased the Autel 200 OBDII on Amazon as stated above (great deal by the way). I can tell you that yes it does reset the maintenance interval light on my 09 QP S. I was actually a bit surprised by the features as it tested and diagnosed all of the vehicles systems (nodes) including our favorite Skyhook suspension system which has been giving me a Check Suspension message for a month. Code for R front accelerator sensor. Verified and soon to be replaced.