It's on. So I took my air compressor and put in 35#s of air in each tire. I put key to ON pos. and held the reset button until the 3 blinks were done. Light is still on. This is the first I have had to add air to the tires, usually the mechanic checks @ oil changes. They were low around 30#s. It's a 09', could it be a bad sensor or did I put too much air in the tires...does over inflated tire engage the light also? Thanks