I know the car checks the oil each time I am about to start the car. Most of the time it says 6 seconds. Sometimes, it's 3-4 minutes. This usually occurs after I have stopped the car less than five minutes and want to restart. That is a slight nuisance but I'm willing to wait 4 minutes, as I have gathered that I should not interrupt the process and start the car (I think that's what the manual said). But today, it said 20 minutes! I had just stopped the car to put air in my tires and when I was about to start it it wanted to measure the oil level but take 20 minutes. I couldn't wait there for 20 minutes so I played around with the computer and think I cancelled it. Any thoughts on what I should do next time?