Hi. When I put my key in the ignition and push the pedal the car does not always turn on. I usually have to do it a couple times. This seems like it has been going on for a couple months. I questioned myself as to whether I needed to put my foot on the pedal first etc. Today i turned the car off for about 5 minutes. When I got back in and tried to turn it on, it did not turn on fully but like half way, all the lights came on, check engine etc. The car was just sort of shaking but not really on I turned it off and on again with no problem. 66,000miles, 2009. Any thoughts?? Thanks, Natalie